summaryrefslogtreecommitdiff
path: root/spec/unit/node_spec.rb
blob: d3c58c6f6a05b40f5e423fae3f33e04333ee0f43 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
#
# Author:: Adam Jacob (<adam@chef.io>)
# Copyright:: Copyright 2008-2016, Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require "spec_helper"
require "ostruct"

describe Chef::Node do

  let(:node) { Chef::Node.new() }
  let(:platform_introspector) { node }

  it_behaves_like "a platform introspector"

  it "creates a node and assigns it a name" do
    node = Chef::Node.build("solo-node")
    expect(node.name).to eq("solo-node")
  end

  it "should validate the name of the node" do
    expect { Chef::Node.build("solo node") }.to raise_error(Chef::Exceptions::ValidationFailed)
  end

  it "should be sortable" do
    n1 = Chef::Node.build("alpha")
    n2 = Chef::Node.build("beta")
    n3 = Chef::Node.build("omega")
    expect([n3, n1, n2].sort).to eq([n1, n2, n3])
  end

  it "should share identity only with others of the same name" do
    n1 = Chef::Node.build("foo")
    n2 = Chef::Node.build("foo")
    n3 = Chef::Node.build("bar")
    expect(n1).to eq(n2)
    expect(n1).not_to eq(n3)
  end

  describe "when the node does not exist on the server" do
    before do
      response = OpenStruct.new(:code => "404")
      exception = Net::HTTPServerException.new("404 not found", response)
      allow(Chef::Node).to receive(:load).and_raise(exception)
      node.name("created-node")
    end

    it "creates a new node for find_or_create" do
      allow(Chef::Node).to receive(:new).and_return(node)
      expect(node).to receive(:create).and_return(node)
      node = Chef::Node.find_or_create("created-node")
      expect(node.name).to eq("created-node")
      expect(node).to equal(node)
    end
  end

  describe "when the node exists on the server" do
    before do
      node.name("existing-node")
      allow(Chef::Node).to receive(:load).and_return(node)
    end

    it "loads the node via the REST API for find_or_create" do
      expect(Chef::Node.find_or_create("existing-node")).to equal(node)
    end
  end

  describe "run_state" do
    it "is an empty hash" do
      expect(node.run_state).to respond_to(:keys)
      expect(node.run_state).to be_empty
    end
  end

  describe "initialize" do
    it "should default to the '_default' chef_environment" do
      n = Chef::Node.new
      expect(n.chef_environment).to eq("_default")
    end
  end

  describe "name" do
    it "should allow you to set a name with name(something)" do
      expect { node.name("latte") }.not_to raise_error
    end

    it "should return the name with name()" do
      node.name("latte")
      expect(node.name).to eql("latte")
    end

    it "should always have a string for name" do
      expect { node.name(Hash.new) }.to raise_error(ArgumentError)
    end

    it "cannot be blank" do
      expect { node.name("") }.to raise_error(Chef::Exceptions::ValidationFailed)
    end

    it "should not accept name doesn't match /^[\-[:alnum:]_:.]+$/" do
      expect { node.name("space in it") }.to raise_error(Chef::Exceptions::ValidationFailed)
    end
  end

  describe "chef_environment" do
    it "should set an environment with chef_environment(something)" do
      expect { node.chef_environment("latte") }.not_to raise_error
    end

    it "should return the chef_environment with chef_environment()" do
      node.chef_environment("latte")
      expect(node.chef_environment).to eq("latte")
    end

    it "should disallow non-strings" do
      expect { node.chef_environment(Hash.new) }.to raise_error(ArgumentError)
      expect { node.chef_environment(42) }.to raise_error(ArgumentError)
    end

    it "cannot be blank" do
      expect { node.chef_environment("") }.to raise_error(Chef::Exceptions::ValidationFailed)
    end
  end

  describe "policy_name" do

    it "defaults to nil" do
      expect(node.policy_name).to be_nil
    end

    it "sets policy_name with a regular setter" do
      node.policy_name = "example-policy"
      expect(node.policy_name).to eq("example-policy")
    end

    it "allows policy_name with every valid character" do
      expect { node.policy_name = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqurstuvwxyz0123456789-_:." }.to_not raise_error
    end

    it "sets policy_name when given an argument" do
      node.policy_name("example-policy")
      expect(node.policy_name).to eq("example-policy")
    end

    it "sets policy_name to nil when given nil" do
      node.policy_name = "example-policy"
      node.policy_name = nil
      expect(node.policy_name).to be_nil
    end

    it "disallows non-strings" do
      expect { node.policy_name(Hash.new) }.to raise_error(Chef::Exceptions::ValidationFailed)
      expect { node.policy_name(42) }.to raise_error(Chef::Exceptions::ValidationFailed)
    end

    it "cannot be blank" do
      expect { node.policy_name("") }.to raise_error(Chef::Exceptions::ValidationFailed)
    end
  end

  describe "policy_group" do

    it "defaults to nil" do
      expect(node.policy_group).to be_nil
    end

    it "sets policy_group with a regular setter" do
      node.policy_group = "staging"
      expect(node.policy_group).to eq("staging")
    end

    it "allows policy_group with every valid character" do
      expect { node.policy_group = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqurstuvwxyz0123456789-_:." }.to_not raise_error
    end

    it "sets an environment with chef_environment(something)" do
      node.policy_group("staging")
      expect(node.policy_group).to eq("staging")
    end

    it "sets policy_group to nil when given nil" do
      node.policy_group = "staging"
      node.policy_group = nil
      expect(node.policy_group).to be_nil
    end

    it "disallows non-strings" do
      expect { node.policy_group(Hash.new) }.to raise_error(Chef::Exceptions::ValidationFailed)
      expect { node.policy_group(42) }.to raise_error(Chef::Exceptions::ValidationFailed)
    end

    it "cannot be blank" do
      expect { node.policy_group("") }.to raise_error(Chef::Exceptions::ValidationFailed)
    end
  end

  describe "attributes" do
    it "should have attributes" do
      expect(node.attribute).to be_a_kind_of(Hash)
    end

    it "should allow attributes to be accessed by name or symbol directly on node[]" do
      node.default["locust"] = "something"
      expect(node[:locust]).to eql("something")
      expect(node["locust"]).to eql("something")
    end

    it "should return nil if it cannot find an attribute with node[]" do
      expect(node["secret"]).to eql(nil)
    end

    it "does not allow you to set an attribute via node[]=" do
      expect { node["secret"] = "shush" }.to raise_error(Chef::Exceptions::ImmutableAttributeModification)
    end

    it "should allow you to query whether an attribute exists with attribute?" do
      node.default["locust"] = "something"
      expect(node.attribute?("locust")).to eql(true)
      expect(node.attribute?("no dice")).to eql(false)
    end

    it "should let you go deep with attribute?" do
      node.set["battles"]["people"]["wonkey"] = true
      expect(node["battles"]["people"].attribute?("wonkey")).to eq(true)
      expect(node["battles"]["people"].attribute?("snozzberry")).to eq(false)
    end

    it "does not allow you to set an attribute via method_missing" do
      expect { node.sunshine = "is bright" }.to raise_error(Chef::Exceptions::ImmutableAttributeModification)
    end

    it "should allow you get get an attribute via method_missing" do
      node.default.sunshine = "is bright"
      expect(node.sunshine).to eql("is bright")
    end

    describe "normal attributes" do
      it "should allow you to set an attribute with set, without pre-declaring a hash" do
        node.set[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set an attribute with set_unless" do
        node.set_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(false)
      end

      it "should not allow you to set an attribute with set_unless if it already exists" do
        node.set[:snoopy][:is_a_puppy] = true
        node.set_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set an attribute with set_unless if is a nil value" do
        node.attributes.normal = { snoopy: { is_a_puppy: nil } }
        node.set_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(false)
      end

      it "should allow you to set a value after a set_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.set_unless[:snoopy][:is_a_puppy] = false
        node.set[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should let you set a value after a 'dangling' set_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.set[:snoopy][:is_a_puppy] = "what"
        node.set_unless[:snoopy][:is_a_puppy]
        node.set[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "auto-vivifies attributes created via method syntax" do
        node.set.fuu.bahrr.baz = "qux"
        expect(node.fuu.bahrr.baz).to eq("qux")
      end

      it "should let you use tag as a convience method for the tags attribute" do
        node.normal["tags"] = ["one", "two"]
        node.tag("three", "four")
        expect(node["tags"]).to eq(["one", "two", "three", "four"])
      end
    end

    describe "default attributes" do
      it "should be set with default, without pre-declaring a hash" do
        node.default[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set with default_unless without pre-declaring a hash" do
        node.default_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(false)
      end

      it "should not allow you to set an attribute with default_unless if it already exists" do
        node.default[:snoopy][:is_a_puppy] = true
        node.default_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set a value after a default_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.default_unless[:snoopy][:is_a_puppy] = false
        node.default[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set a value after a 'dangling' default_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.default[:snoopy][:is_a_puppy] = "what"
        node.default_unless[:snoopy][:is_a_puppy]
        node.default[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "auto-vivifies attributes created via method syntax" do
        node.default.fuu.bahrr.baz = "qux"
        expect(node.fuu.bahrr.baz).to eq("qux")
      end
    end

    describe "override attributes" do
      it "should be set with override, without pre-declaring a hash" do
        node.override[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set with override_unless without pre-declaring a hash" do
        node.override_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(false)
      end

      it "should not allow you to set an attribute with override_unless if it already exists" do
        node.override[:snoopy][:is_a_puppy] = true
        node.override_unless[:snoopy][:is_a_puppy] = false
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set a value after an override_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.override_unless[:snoopy][:is_a_puppy] = false
        node.override[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "should allow you to set a value after a 'dangling' override_unless" do
        # this tests for set_unless_present state bleeding between statements CHEF-3806
        node.override_unless[:snoopy][:is_a_puppy] = "what"
        node.override_unless[:snoopy][:is_a_puppy]
        node.override[:snoopy][:is_a_puppy] = true
        expect(node[:snoopy][:is_a_puppy]).to eq(true)
      end

      it "auto-vivifies attributes created via method syntax" do
        node.override.fuu.bahrr.baz = "qux"
        expect(node.fuu.bahrr.baz).to eq("qux")
      end
    end

    describe "globally deleting attributes" do
      context "with hash values" do
        before do
          node.role_default["mysql"]["server"]["port"] = 1234
          node.normal["mysql"]["server"]["port"] = 2345
          node.override["mysql"]["server"]["port"] = 3456
        end

        it "deletes all the values and returns the value with the highest precidence" do
          expect( node.rm("mysql", "server", "port") ).to eql(3456)
          expect( node["mysql"]["server"]["port"] ).to be_nil
          expect( node["mysql"]["server"] ).to eql({})
        end

        it "deletes nested things correctly" do
          node.default["mysql"]["client"]["client_setting"] = "foo"
          expect( node.rm("mysql", "server") ).to eql( { "port" => 3456 } )
          expect( node["mysql"] ).to eql( { "client" => { "client_setting" => "foo" } } )
        end

        it "returns nil if the node attribute does not exist" do
          expect( node.rm("no", "such", "thing") ).to be_nil
        end

        it "can delete the entire tree" do
          expect( node.rm("mysql") ).to eql({ "server" => { "port" => 3456 } })
        end
      end

      context "when trying to delete through a thing that isn't an array-like or hash-like object" do
        before do
          node.default["mysql"] = true
        end

        it "returns nil when you're two levels deeper" do
          expect( node.rm("mysql", "server", "port") ).to eql(nil)
        end

        it "returns nil when you're one level deeper" do
          expect( node.rm("mysql", "server") ).to eql(nil)
        end

        it "correctly deletes at the top level" do
          expect( node.rm("mysql") ).to eql(true)
        end
      end

      context "with array indexes" do
        before do
          node.role_default["mysql"]["server"][0]["port"] = 1234
          node.normal["mysql"]["server"][0]["port"] = 2345
          node.override["mysql"]["server"][0]["port"] = 3456
          node.override["mysql"]["server"][1]["port"] = 3456
        end

        it "deletes the array element" do
          expect( node.rm("mysql", "server", 0, "port") ).to eql(3456)
          expect( node["mysql"]["server"][0]["port"] ).to be_nil
          expect( node["mysql"]["server"][1]["port"] ).to eql(3456)
        end
      end

      context "with real arrays" do
        before do
          node.role_default["mysql"]["server"] = [ {
            "port" => 1234
          } ]
          node.normal["mysql"]["server"] = [ {
            "port" => 2345
          } ]
          node.override["mysql"]["server"] = [ {
            "port" => 3456
          } ]
        end

        it "deletes the array element" do
          expect( node.rm("mysql", "server", 0, "port") ).to eql(3456)
          expect( node["mysql"]["server"][0]["port"] ).to be_nil
        end

        it "does not have a horrible error message when mistaking arrays for hashes" do
          expect { node.rm("mysql", "server", "port") }.to raise_error(TypeError, "Wrong type in index of attribute (did you use a Hash index on an Array?)")
        end
      end
    end

    describe "granular deleting attributes" do
      context "when only defaults exist" do
        before do
          node.role_default["mysql"]["server"]["port"] = 1234
          node.default["mysql"]["server"]["port"] = 2345
          node.force_default["mysql"]["server"]["port"] = 3456
        end

        it "returns the deleted values" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
        end

        it "returns nil for the combined attribues" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
          expect( node["mysql"]["server"]["port"] ).to eql(nil)
        end

        it "returns an empty hash for the default attrs" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
          # this auto-vivifies, should it?
          expect( node.default_attrs["mysql"]["server"]["port"] ).to eql({})
        end

        it "returns an empty hash after the last key is deleted" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
          expect( node["mysql"]["server"] ).to eql({})
        end
      end

      context "when trying to delete through a thing that isn't an array-like or hash-like object" do
        before do
          node.default["mysql"] = true
        end

        it "returns nil when you're two levels deeper" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(nil)
        end

        it "returns nil when you're one level deeper" do
          expect( node.rm_default("mysql", "server") ).to eql(nil)
        end

        it "correctly deletes at the top level" do
          expect( node.rm_default("mysql") ).to eql(true)
        end
      end

      context "when a higher precedence exists" do
        before do
          node.role_default["mysql"]["server"]["port"] = 1234
          node.default["mysql"]["server"]["port"] = 2345
          node.force_default["mysql"]["server"]["port"] = 3456

          node.override["mysql"]["server"]["port"] = 9999
        end

        it "returns the deleted values" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
        end

        it "returns the higher precedence values after the delete" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
          expect( node["mysql"]["server"]["port"] ).to eql(9999)
        end

        it "returns an empty has for the default attrs" do
          expect( node.rm_default("mysql", "server", "port") ).to eql(3456)
          # this auto-vivifies, should it?
          expect( node.default_attrs["mysql"]["server"]["port"] ).to eql({})
        end
      end

      context "when a lower precedence exists" do
        before do
          node.default["mysql"]["server"]["port"] = 2345
          node.override["mysql"]["server"]["port"] = 9999
          node.role_override["mysql"]["server"]["port"] = 9876
          node.force_override["mysql"]["server"]["port"] = 6669
        end

        it "returns the deleted values" do
          expect( node.rm_override("mysql", "server", "port") ).to eql(6669)
        end

        it "returns the lower precedence levels after the delete" do
          expect( node.rm_override("mysql", "server", "port") ).to eql(6669)
          expect( node["mysql"]["server"]["port"] ).to eql(2345)
        end

        it "returns an empty has for the override attrs" do
          expect( node.rm_override("mysql", "server", "port") ).to eql(6669)
          # this auto-vivifies, should it?
          expect( node.override_attrs["mysql"]["server"]["port"] ).to eql({})
        end
      end

      it "rm_default returns nil on deleting non-existent values" do
        expect( node.rm_default("no", "such", "thing") ).to be_nil
      end

      it "rm_normal returns nil on deleting non-existent values" do
        expect( node.rm_normal("no", "such", "thing") ).to be_nil
      end

      it "rm_override returns nil on deleting non-existent values" do
        expect( node.rm_override("no", "such", "thing") ).to be_nil
      end
    end

    describe "granular replacing attributes" do
      it "removes everything at the level of the last key" do
        node.default["mysql"]["server"]["port"] = 2345

        node.default!["mysql"]["server"] = { "data_dir" => "/my_raid_volume/lib/mysql" }

        expect( node["mysql"]["server"] ).to eql({ "data_dir" => "/my_raid_volume/lib/mysql" })
      end

      it "replaces a value at the cookbook sub-level of the atributes only" do
        node.default["mysql"]["server"]["port"] = 2345
        node.default["mysql"]["server"]["service_name"] = "fancypants-sql"
        node.role_default["mysql"]["server"]["port"] = 1234
        node.force_default["mysql"]["server"]["port"] = 3456

        node.default!["mysql"]["server"] = { "data_dir" => "/my_raid_volume/lib/mysql" }

        expect( node["mysql"]["server"]["port"] ).to eql(3456)
        expect( node["mysql"]["server"]["service_name"] ).to be_nil
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
        expect( node["mysql"]["server"] ).to eql({ "port" => 3456, "data_dir" => "/my_raid_volume/lib/mysql" })
      end

      it "higher precedence values aren't removed" do
        node.role_default["mysql"]["server"]["port"] = 1234
        node.default["mysql"]["server"]["port"] = 2345
        node.force_default["mysql"]["server"]["port"] = 3456
        node.override["mysql"]["server"]["service_name"] = "fancypants-sql"

        node.default!["mysql"]["server"] = { "data_dir" => "/my_raid_volume/lib/mysql" }

        expect( node["mysql"]["server"]["port"] ).to eql(3456)
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
        expect( node["mysql"]["server"] ).to eql({ "service_name" => "fancypants-sql", "port" => 3456, "data_dir" => "/my_raid_volume/lib/mysql" })
      end
    end

    describe "granular force replacing attributes" do
      it "removes everything at the level of the last key" do
        node.force_default["mysql"]["server"]["port"] = 2345

        node.force_default!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }

        expect( node["mysql"]["server"] ).to eql({
          "data_dir" => "/my_raid_volume/lib/mysql"
        },)
      end

      it "removes all values from the precedence level when setting" do
        node.role_default["mysql"]["server"]["port"] = 1234
        node.default["mysql"]["server"]["port"] = 2345
        node.force_default["mysql"]["server"]["port"] = 3456

        node.force_default!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }

        expect( node["mysql"]["server"]["port"] ).to be_nil
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
        expect( node["mysql"]["server"] ).to eql({
          "data_dir" => "/my_raid_volume/lib/mysql"
        },)
      end

      it "higher precedence levels are not removed" do
        node.role_default["mysql"]["server"]["port"] = 1234
        node.default["mysql"]["server"]["port"] = 2345
        node.force_default["mysql"]["server"]["port"] = 3456
        node.override["mysql"]["server"]["service_name"] = "fancypants-sql"

        node.force_default!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }

        expect( node["mysql"]["server"]["port"] ).to be_nil
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
        expect( node["mysql"]["server"] ).to eql({
          "service_name" => "fancypants-sql",
          "data_dir" => "/my_raid_volume/lib/mysql",
        },)
      end

      it "will autovivify" do
        node.force_default!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
      end

      it "lower precedence levels aren't removed" do
        node.role_override["mysql"]["server"]["port"] = 1234
        node.override["mysql"]["server"]["port"] = 2345
        node.force_override["mysql"]["server"]["port"] = 3456
        node.default["mysql"]["server"]["service_name"] = "fancypants-sql"

        node.force_override!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }

        expect( node["mysql"]["server"]["port"] ).to be_nil
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
        expect( node["mysql"]["server"] ).to eql({
          "service_name" => "fancypants-sql",
          "data_dir" => "/my_raid_volume/lib/mysql",
        },)
      end

      it "when overwriting a non-hash/array" do
        node.override["mysql"] = false
        node.force_override["mysql"] = true
        node.force_override!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }
        expect( node["mysql"]["server"]["data_dir"] ).to eql("/my_raid_volume/lib/mysql")
      end

      it "when overwriting an array with a hash" do
        node.force_override["mysql"][0] = true
        node.force_override!["mysql"]["server"] = {
          "data_dir" => "/my_raid_volume/lib/mysql"
        }
        expect( node["mysql"]["server"] ).to eql({
          "data_dir" => "/my_raid_volume/lib/mysql"
        },)
      end
    end

    # In Chef-12.0 there is a deep_merge cache on the top level attribute which had a bug
    # where it cached node[:foo] separate from node['foo'].  These tests exercise those edge conditions.
    #
    # https://github.com/opscode/chef/issues/2700
    # https://github.com/opscode/chef/issues/2712
    # https://github.com/opscode/chef/issues/2745
    #
    describe "deep merge attribute cache edge conditions" do
      it "does not error with complicated attribute substitution" do
        node.default["chef_attribute_hell"]["attr1"] = "attribute1"
        node.default["chef_attribute_hell"]["attr2"] = "#{node.chef_attribute_hell.attr1}/attr2"
        expect { node.default["chef_attribute_hell"]["attr3"] = "#{node.chef_attribute_hell.attr2}/attr3" }.not_to raise_error
      end

      it "caches both strings and symbols correctly" do
        node.force_default[:solr][:version] = "4.10.2"
        node.force_default[:solr][:data_dir] = "/opt/solr-#{node['solr'][:version]}/example/solr"
        node.force_default[:solr][:xms] = "512M"
        expect(node[:solr][:xms]).to eql("512M")
        expect(node["solr"][:xms]).to eql("512M")
      end

      it "method interpolation syntax also works" do
        node.default["passenger"]["version"]     = "4.0.57"
        node.default["passenger"]["root_path"]   = "passenger-#{node['passenger']['version']}"
        node.default["passenger"]["root_path_2"] = "passenger-#{node.passenger['version']}"
        expect(node["passenger"]["root_path_2"]).to eql("passenger-4.0.57")
        expect(node[:passenger]["root_path_2"]).to eql("passenger-4.0.57")
      end
    end

    it "should raise an ArgumentError if you ask for an attribute that doesn't exist via method_missing" do
      expect { node.sunshine }.to raise_error(NoMethodError)
    end

    it "should allow you to iterate over attributes with each_attribute" do
      node.default.sunshine = "is bright"
      node.default.canada = "is a nice place"
      seen_attributes = Hash.new
      node.each_attribute do |a, v|
        seen_attributes[a] = v
      end
      expect(seen_attributes).to have_key("sunshine")
      expect(seen_attributes).to have_key("canada")
      expect(seen_attributes["sunshine"]).to eq("is bright")
      expect(seen_attributes["canada"]).to eq("is a nice place")
    end
  end

  describe "consuming json" do

    before do
      @ohai_data = { :platform => "foo", :platform_version => "bar" }
    end

    it "consumes the run list portion of a collection of attributes and returns the remainder" do
      attrs = { "run_list" => [ "role[base]", "recipe[chef::server]" ], "foo" => "bar" }
      expect(node.consume_run_list(attrs)).to eq({ "foo" => "bar" })
      expect(node.run_list).to eq([ "role[base]", "recipe[chef::server]" ])
    end

    it "sets the node chef_environment" do
      attrs = { "chef_environment" => "foo_environment", "bar" => "baz" }
      expect(node.consume_chef_environment(attrs)).to eq({ "bar" => "baz" })
      expect(node.chef_environment).to eq("foo_environment")
      expect(node["chef_environment"]).to be nil
    end

    it "should overwrites the run list with the run list it consumes" do
      node.consume_run_list "recipes" => [ "one", "two" ]
      node.consume_run_list "recipes" => [ "three" ]
      expect(node.run_list).to eq([ "three" ])
    end

    it "should not add duplicate recipes from the json attributes" do
      node.run_list << "one"
      node.consume_run_list "recipes" => [ "one", "two", "three" ]
      expect(node.run_list).to eq([ "one", "two", "three" ])
    end

    it "doesn't change the run list if no run_list is specified in the json" do
      node.run_list << "role[database]"
      node.consume_run_list "foo" => "bar"
      expect(node.run_list).to eq(["role[database]"])
    end

    it "raises an exception if you provide both recipe and run_list attributes, since this is ambiguous" do
      expect { node.consume_run_list "recipes" => "stuff", "run_list" => "other_stuff" }.to raise_error(Chef::Exceptions::AmbiguousRunlistSpecification)
    end

    it "should add json attributes to the node" do
      node.consume_external_attrs(@ohai_data, { "one" => "two", "three" => "four" })
      expect(node.one).to eql("two")
      expect(node.three).to eql("four")
    end

    it "should set the tags attribute to an empty array if it is not already defined" do
      node.consume_external_attrs(@ohai_data, {})
      expect(node.tags).to eql([])
    end

    it "should not set the tags attribute to an empty array if it is already defined" do
      node.tag("radiohead")
      node.consume_external_attrs(@ohai_data, {})
      expect(node.tags).to eql([ "radiohead" ])
    end

    it "should set the tags attribute to an empty array if it is nil" do
      node.attributes.normal = { "tags" => nil }
      node.consume_external_attrs(@ohai_data, {})
      expect(node.tags).to eql([])
    end

    it "should return an array if it is fed a string" do
      node.normal[:tags] = "string"
      node.consume_external_attrs(@ohai_data, {})
      expect(node.tags).to eql(["string"])
    end

    it "should return an array if it is fed a hash" do
      node.normal[:tags] = {}
      node.consume_external_attrs(@ohai_data, {})
      expect(node.tags).to eql([])
    end

    it "deep merges attributes instead of overwriting them" do
      node.consume_external_attrs(@ohai_data, "one" => { "two" => { "three" => "four" } })
      expect(node.one.to_hash).to eq({ "two" => { "three" => "four" } })
      node.consume_external_attrs(@ohai_data, "one" => { "abc" => "123" })
      node.consume_external_attrs(@ohai_data, "one" => { "two" => { "foo" => "bar" } })
      expect(node.one.to_hash).to eq({ "two" => { "three" => "four", "foo" => "bar" }, "abc" => "123" })
    end

    it "gives attributes from JSON priority when deep merging" do
      node.consume_external_attrs(@ohai_data, "one" => { "two" => { "three" => "four" } })
      expect(node.one.to_hash).to eq({ "two" => { "three" => "four" } })
      node.consume_external_attrs(@ohai_data, "one" => { "two" => { "three" => "forty-two" } })
      expect(node.one.to_hash).to eq({ "two" => { "three" => "forty-two" } })
    end

  end

  describe "preparing for a chef client run" do
    before do
      @ohai_data = { :platform => "foobuntu", :platform_version => "23.42" }
    end

    it "sets its platform according to platform detection" do
      node.consume_external_attrs(@ohai_data, {})
      expect(node.automatic_attrs[:platform]).to eq("foobuntu")
      expect(node.automatic_attrs[:platform_version]).to eq("23.42")
    end

    it "consumes the run list from provided json attributes" do
      node.consume_external_attrs(@ohai_data, { "run_list" => ["recipe[unicorn]"] })
      expect(node.run_list).to eq(["recipe[unicorn]"])
    end

    it "saves non-runlist json attrs for later" do
      expansion = Chef::RunList::RunListExpansion.new("_default", [])
      allow(node.run_list).to receive(:expand).and_return(expansion)
      node.consume_external_attrs(@ohai_data, { "foo" => "bar" })
      node.expand!
      expect(node.normal_attrs).to eq({ "foo" => "bar", "tags" => [] })
    end

  end

  describe "when expanding its run list and merging attributes" do
    before do
      @environment = Chef::Environment.new.tap do |e|
        e.name("rspec_env")
        e.default_attributes("env default key" => "env default value")
        e.override_attributes("env override key" => "env override value")
      end
      expect(Chef::Environment).to receive(:load).with("rspec_env").and_return(@environment)
      @expansion = Chef::RunList::RunListExpansion.new("rspec_env", [])
      node.chef_environment("rspec_env")
      allow(node.run_list).to receive(:expand).and_return(@expansion)
    end

    it "sets the 'recipes' automatic attribute to the recipes in the expanded run_list" do
      @expansion.recipes << "recipe[chef::client]" << "recipe[nginx::default]"
      node.expand!
      expect(node.automatic_attrs[:recipes]).to eq(["recipe[chef::client]", "recipe[nginx::default]"])
    end

    it "sets the 'roles' automatic attribute to the expanded role list" do
      @expansion.instance_variable_set(:@applied_roles, { "arf" => nil, "countersnark" => nil })
      node.expand!
      expect(node.automatic_attrs[:roles].sort).to eq(["arf", "countersnark"])
    end

    it "applies default attributes from the environment as environment defaults" do
      node.expand!
      expect(node.attributes.env_default["env default key"]).to eq("env default value")
    end

    it "applies override attributes from the environment as env overrides" do
      node.expand!
      expect(node.attributes.env_override["env override key"]).to eq("env override value")
    end

    it "applies default attributes from roles as role defaults" do
      @expansion.default_attrs["role default key"] = "role default value"
      node.expand!
      expect(node.attributes.role_default["role default key"]).to eq("role default value")
    end

    it "applies override attributes from roles as role overrides" do
      @expansion.override_attrs["role override key"] = "role override value"
      node.expand!
      expect(node.attributes.role_override["role override key"]).to eq("role override value")
    end
  end

  describe "loaded_recipe" do
    it "should not add a recipe that is already in the recipes list" do
      node.automatic_attrs[:recipes] = [ "nginx::module" ]
      node.loaded_recipe(:nginx, "module")
      expect(node.automatic_attrs[:recipes].length).to eq(1)
    end

    it "should add a recipe that is not already in the recipes list" do
      node.automatic_attrs[:recipes] = [ "nginx::other_module" ]
      node.loaded_recipe(:nginx, "module")
      expect(node.automatic_attrs[:recipes].length).to eq(2)
      expect(node.recipe?("nginx::module")).to be true
      expect(node.recipe?("nginx::other_module")).to be true
    end
  end

  describe "when querying for recipes in the run list" do
    context "when a recipe is in the top level run list" do
      before do
        node.run_list << "recipe[nginx::module]"
      end

      it "finds the recipe" do
        expect(node.recipe?("nginx::module")).to be true
      end

      it "does not find a recipe not in the run list" do
        expect(node.recipe?("nginx::other_module")).to be false
      end
    end
    context "when a recipe is in the expanded run list only" do
      before do
        node.run_list << "role[base]"
        node.automatic_attrs[:recipes] = [ "nginx::module" ]
      end

      it "finds a recipe in the expanded run list" do
        expect(node.recipe?("nginx::module")).to be true
      end

      it "does not find a recipe that's not in the run list" do
        expect(node.recipe?("nginx::other_module")).to be false
      end
    end
  end

  describe "when clearing computed state at the beginning of a run" do
    before do
      node.default[:foo] = "default"
      node.normal[:foo] = "normal"
      node.override[:foo] = "override"
      node.reset_defaults_and_overrides
    end

    it "removes default attributes" do
      expect(node.default).to be_empty
    end

    it "removes override attributes" do
      expect(node.override).to be_empty
    end

    it "leaves normal level attributes untouched" do
      expect(node[:foo]).to eq("normal")
    end

  end

  describe "when merging environment attributes" do
    before do
      node.chef_environment = "rspec"
      @expansion = Chef::RunList::RunListExpansion.new("rspec", [])
      @expansion.default_attrs.replace({ :default => "from role", :d_role => "role only" })
      @expansion.override_attrs.replace({ :override => "from role", :o_role => "role only" })

      @environment = Chef::Environment.new
      @environment.default_attributes = { :default => "from env", :d_env => "env only" }
      @environment.override_attributes = { :override => "from env", :o_env => "env only" }
      allow(Chef::Environment).to receive(:load).and_return(@environment)
      node.apply_expansion_attributes(@expansion)
    end

    it "does not nuke role-only default attrs" do
      expect(node[:d_role]).to eq("role only")
    end

    it "does not nuke role-only override attrs" do
      expect(node[:o_role]).to eq("role only")
    end

    it "does not nuke env-only default attrs" do
      expect(node[:o_env]).to eq("env only")
    end

    it "does not nuke role-only override attrs" do
      expect(node[:o_env]).to eq("env only")
    end

    it "gives role defaults precedence over env defaults" do
      expect(node[:default]).to eq("from role")
    end

    it "gives env overrides precedence over role overrides" do
      expect(node[:override]).to eq("from env")
    end
  end

  describe "when evaluating attributes files" do
    before do
      @cookbook_repo = File.expand_path(File.join(CHEF_SPEC_DATA, "cookbooks"))
      @cookbook_loader = Chef::CookbookLoader.new(@cookbook_repo)
      @cookbook_loader.load_cookbooks

      @cookbook_collection = Chef::CookbookCollection.new(@cookbook_loader.cookbooks_by_name)

      @events = Chef::EventDispatch::Dispatcher.new
      @run_context = Chef::RunContext.new(node, @cookbook_collection, @events)

      node.include_attribute("openldap::default")
      node.include_attribute("openldap::smokey")
    end

    it "sets attributes from the files" do
      expect(node.ldap_server).to eql("ops1prod")
      expect(node.ldap_basedn).to eql("dc=hjksolutions,dc=com")
      expect(node.ldap_replication_password).to eql("forsure")
      expect(node.smokey).to eql("robinson")
    end

    it "gives a sensible error when attempting to load a missing attributes file" do
      expect { node.include_attribute("nope-this::doesnt-exist") }.to raise_error(Chef::Exceptions::CookbookNotFound)
    end
  end

  describe "roles" do
    it "should allow you to query whether or not it has a recipe applied with role?" do
      node.run_list << "role[sunrise]"
      expect(node.role?("sunrise")).to eql(true)
      expect(node.role?("not at home")).to eql(false)
    end

    it "should allow you to set roles with arguments" do
      node.run_list << "role[one]"
      node.run_list << "role[two]"
      expect(node.role?("one")).to eql(true)
      expect(node.role?("two")).to eql(true)
    end
  end

  describe "run_list" do
    it "should have a Chef::RunList of recipes and roles that should be applied" do
      expect(node.run_list).to be_a_kind_of(Chef::RunList)
    end

    it "should allow you to query the run list with arguments" do
      node.run_list "recipe[baz]"
      expect(node.run_list?("recipe[baz]")).to eql(true)
    end

    it "should allow you to set the run list with arguments" do
      node.run_list "recipe[baz]", "role[foo]"
      expect(node.run_list?("recipe[baz]")).to eql(true)
      expect(node.run_list?("role[foo]")).to eql(true)
    end
  end

  describe "from file" do
    it "should load a node from a ruby file" do
      node.from_file(File.expand_path(File.join(CHEF_SPEC_DATA, "nodes", "test.rb")))
      expect(node.name).to eql("test.example.com-short")
      expect(node.sunshine).to eql("in")
      expect(node.something).to eql("else")
      expect(node.run_list).to eq(["operations-master", "operations-monitoring"])
    end

    it "should raise an exception if the file cannot be found or read" do
      expect { node.from_file("/tmp/monkeydiving") }.to raise_error(IOError)
    end
  end

  describe "update_from!" do
    before(:each) do
      node.name("orig")
      node.chef_environment("dev")
      node.default_attrs = { "one" => { "two" => "three", "four" => "five", "eight" => "nine" } }
      node.override_attrs = { "one" => { "two" => "three", "four" => "six" } }
      node.normal_attrs = { "one" => { "two" => "seven" } }
      node.run_list << "role[marxist]"
      node.run_list << "role[leninist]"
      node.run_list << "recipe[stalinist]"

      @example = Chef::Node.new()
      @example.name("newname")
      @example.chef_environment("prod")
      @example.default_attrs = { "alpha" => { "bravo" => "charlie", "delta" => "echo" } }
      @example.override_attrs = { "alpha" => { "bravo" => "foxtrot", "delta" => "golf" } }
      @example.normal_attrs = { "alpha" => { "bravo" => "hotel" } }
      @example.run_list << "role[comedy]"
      @example.run_list << "role[drama]"
      @example.run_list << "recipe[mystery]"
    end

    it "allows update of everything except name" do
      node.update_from!(@example)
      expect(node.name).to eq("orig")
      expect(node.chef_environment).to eq(@example.chef_environment)
      expect(node.default_attrs).to eq(@example.default_attrs)
      expect(node.override_attrs).to eq(@example.override_attrs)
      expect(node.normal_attrs).to eq(@example.normal_attrs)
      expect(node.run_list).to eq(@example.run_list)
    end

    it "should not update the name of the node" do
      expect(node).not_to receive(:name).with(@example.name)
      node.update_from!(@example)
    end
  end

  describe "to_hash" do
    it "should serialize itself as a hash" do
      node.chef_environment("dev")
      node.default_attrs = { "one" => { "two" => "three", "four" => "five", "eight" => "nine" } }
      node.override_attrs = { "one" => { "two" => "three", "four" => "six" } }
      node.normal_attrs = { "one" => { "two" => "seven" } }
      node.run_list << "role[marxist]"
      node.run_list << "role[leninist]"
      node.run_list << "recipe[stalinist]"
      h = node.to_hash
      expect(h["one"]["two"]).to eq("three")
      expect(h["one"]["four"]).to eq("six")
      expect(h["one"]["eight"]).to eq("nine")
      expect(h["role"]).to be_include("marxist")
      expect(h["role"]).to be_include("leninist")
      expect(h["run_list"]).to be_include("role[marxist]")
      expect(h["run_list"]).to be_include("role[leninist]")
      expect(h["run_list"]).to be_include("recipe[stalinist]")
      expect(h["chef_environment"]).to eq("dev")
    end

    it "should return an empty array for empty run_list" do
      expect(node.to_hash["run_list"]).to eq([])
    end
  end

  describe "converting to or from json" do
    it "should serialize itself as json", :json => true do
      node.from_file(File.expand_path("nodes/test.example.com.rb", CHEF_SPEC_DATA))
      json = Chef::JSONCompat.to_json(node)
      expect(json).to match(/json_class/)
      expect(json).to match(/name/)
      expect(json).to match(/chef_environment/)
      expect(json).to match(/normal/)
      expect(json).to match(/default/)
      expect(json).to match(/override/)
      expect(json).to match(/run_list/)
    end

    it "should serialize valid json with a run list", :json => true do
      #This test came about because activesupport mucks with Chef json serialization
      #Test should pass with and without Activesupport
      node.run_list << { "type" => "role", "name" => "Cthulu" }
      node.run_list << { "type" => "role", "name" => "Hastur" }
      json = Chef::JSONCompat.to_json(node)
      expect(json).to match(/\"run_list\":\[\"role\[Cthulu\]\",\"role\[Hastur\]\"\]/)
    end

    it "should serialize the correct run list", :json => true do
      node.run_list << "role[marxist]"
      node.run_list << "role[leninist]"
      node.override_runlist << "role[stalinist]"
      expect(node.run_list).to be_include("role[stalinist]")
      json = Chef::JSONCompat.to_json(node)
      expect(json).to match(/\"run_list\":\[\"role\[marxist\]\",\"role\[leninist\]\"\]/)
    end

    it "merges the override components into a combined override object" do
      node.attributes.role_override["role override"] = "role override"
      node.attributes.env_override["env override"] = "env override"
      node_for_json = node.for_json
      expect(node_for_json["override"]["role override"]).to eq("role override")
      expect(node_for_json["override"]["env override"]).to eq("env override")
    end

    it "merges the default components into a combined default object" do
      node.attributes.role_default["role default"] = "role default"
      node.attributes.env_default["env default"] = "env default"
      node_for_json = node.for_json
      expect(node_for_json["default"]["role default"]).to eq("role default")
      expect(node_for_json["default"]["env default"]).to eq("env default")
    end

    it "should deserialize itself from json", :json => true do
      node.from_file(File.expand_path("nodes/test.example.com.rb", CHEF_SPEC_DATA))
      json = Chef::JSONCompat.to_json(node)
      serialized_node = Chef::Node.from_hash(Chef::JSONCompat.parse(json))
      expect(serialized_node).to be_a_kind_of(Chef::Node)
      expect(serialized_node.name).to eql(node.name)
      expect(serialized_node.chef_environment).to eql(node.chef_environment)
      node.each_attribute do |k, v|
        expect(serialized_node[k]).to eql(v)
      end
      expect(serialized_node.run_list).to eq(node.run_list)
    end

    context "when policyfile attributes are not present" do

      it "does not have a policy_name key in the json" do
        expect(node.for_json.keys).to_not include("policy_name")
      end

      it "does not have a policy_group key in the json" do
        expect(node.for_json.keys).to_not include("policy_name")
      end
    end

    context "when policyfile attributes are present" do

      before do
        node.policy_name = "my-application"
        node.policy_group = "staging"
      end

      it "includes policy_name key in the json" do
        expect(node.for_json).to have_key("policy_name")
        expect(node.for_json["policy_name"]).to eq("my-application")
      end

      it "includes a policy_group key in the json" do
        expect(node.for_json).to have_key("policy_group")
        expect(node.for_json["policy_group"]).to eq("staging")
      end

      it "parses policyfile attributes from JSON" do
        round_tripped_node = Chef::Node.from_hash(node.for_json)

        expect(round_tripped_node.policy_name).to eq("my-application")
        expect(round_tripped_node.policy_group).to eq("staging")
      end

    end

    include_examples "to_json equivalent to Chef::JSONCompat.to_json" do
      let(:jsonable) {
        node.from_file(File.expand_path("nodes/test.example.com.rb", CHEF_SPEC_DATA))
        node
      }
    end
  end

  describe "to_s" do
    it "should turn into a string like node[name]" do
      node.name("airplane")
      expect(node.to_s).to eql("node[airplane]")
    end
  end

  describe "api model" do
    before(:each) do
      @rest = double("Chef::ServerAPI")
      allow(Chef::ServerAPI).to receive(:new).and_return(@rest)
      @query = double("Chef::Search::Query")
      allow(Chef::Search::Query).to receive(:new).and_return(@query)
    end

    describe "list" do
      describe "inflated" do
        it "should return a hash of node names and objects" do
          n1 = double("Chef::Node", :name => "one")
          allow(n1).to receive(:kind_of?).with(Chef::Node) { true }
          expect(@query).to receive(:search).with(:node).and_yield(n1)
          r = Chef::Node.list(true)
          expect(r["one"]).to eq(n1)
        end
      end

      it "should return a hash of node names and urls" do
        expect(@rest).to receive(:get).and_return({ "one" => "http://foo" })
        r = Chef::Node.list
        expect(r["one"]).to eq("http://foo")
      end
    end

    describe "load" do
      it "should load a node by name" do
        node.from_file(File.expand_path("nodes/test.example.com.rb", CHEF_SPEC_DATA))
        json = Chef::JSONCompat.to_json(node)
        parsed = Chef::JSONCompat.parse(json)
        expect(@rest).to receive(:get).with("nodes/test.example.com").and_return(parsed)
        serialized_node = Chef::Node.load("test.example.com")
        expect(serialized_node).to be_a_kind_of(Chef::Node)
        expect(serialized_node.name).to eql(node.name)
      end
    end

    describe "destroy" do
      it "should destroy a node" do
        expect(@rest).to receive(:delete).with("nodes/monkey").and_return("foo")
        node.name("monkey")
        node.destroy
      end
    end

    describe "save" do
      it "should update a node if it already exists" do
        node.name("monkey")
        allow(node).to receive(:data_for_save).and_return({})
        expect(@rest).to receive(:put).with("nodes/monkey", {}).and_return("foo")
        node.save
      end

      it "should not try and create if it can update" do
        node.name("monkey")
        allow(node).to receive(:data_for_save).and_return({})
        expect(@rest).to receive(:put).with("nodes/monkey", {}).and_return("foo")
        expect(@rest).not_to receive(:post)
        node.save
      end

      it "should create if it cannot update" do
        node.name("monkey")
        allow(node).to receive(:data_for_save).and_return({})
        exception = double("404 error", :code => "404")
        expect(@rest).to receive(:put).and_raise(Net::HTTPServerException.new("foo", exception))
        expect(@rest).to receive(:post).with("nodes", {})
        node.save
      end

      describe "when whyrun mode is enabled" do
        before do
          Chef::Config[:why_run] = true
        end
        after do
          Chef::Config[:why_run] = false
        end
        it "should not save" do
          node.name("monkey")
          expect(@rest).not_to receive(:put)
          expect(@rest).not_to receive(:post)
          node.save
        end
      end

      context "with whitelisted attributes configured" do
        it "should only save whitelisted attributes (and subattributes)" do
          Chef::Config[:automatic_attribute_whitelist] = [
            ["filesystem", "/dev/disk0s2"],
            "network/interfaces/eth0",
          ]

          data = {
            "automatic" => {
              "filesystem" => {
                "/dev/disk0s2"   => { "size" => "10mb" },
                "map - autohome" => { "size" => "10mb" },
              },
              "network" => {
                "interfaces" => {
                  "eth0" => {},
                  "eth1" => {},
                }
              },
            },
            "default" => {}, "normal" => {}, "override" => {}
          }

          selected_data = {
            "automatic" => {
              "filesystem" => {
                "/dev/disk0s2" => { "size" => "10mb" }
              },
              "network" => {
                "interfaces" => {
                  "eth0" => {}
                }
              },
            },
            "default" => {}, "normal" => {}, "override" => {}
          }

          node.name("picky-monkey")
          allow(node).to receive(:for_json).and_return(data)
          expect(@rest).to receive(:put).with("nodes/picky-monkey", selected_data).and_return("foo")
          node.save
        end

        it "should save false-y whitelisted attributes" do
          Chef::Config[:default_attribute_whitelist] = [
            "foo/bar/baz"
          ]

          data = {
            "default" => {
              "foo" => {
                "bar" => {
                  "baz" => false
                },
                "other" => {
                  "stuff" => true
                },
              }
            }
          }

          selected_data = {
            "default" => {
              "foo" => {
                "bar" => {
                  "baz" => false
                }
              }
            }
          }

          node.name("falsey-monkey")
          allow(node).to receive(:for_json).and_return(data)
          expect(@rest).to receive(:put).with("nodes/falsey-monkey", selected_data).and_return("foo")
          node.save
        end

        it "should not save any attributes if the whitelist is empty" do
          Chef::Config[:automatic_attribute_whitelist] = []

          data = {
            "automatic" => {
              "filesystem" => {
                "/dev/disk0s2"   => { "size" => "10mb" },
                "map - autohome" => { "size" => "10mb" },
              }
            },
            "default" => {}, "normal" => {}, "override" => {}
          }

          selected_data = {
            "automatic" => {}, "default" => {}, "normal" => {}, "override" => {}
          }

          node.name("picky-monkey")
          allow(node).to receive(:for_json).and_return(data)
          expect(@rest).to receive(:put).with("nodes/picky-monkey", selected_data).and_return("foo")
          node.save
        end
      end

      context "when policyfile attributes are present" do

        before do
          node.name("example-node")
          node.policy_name = "my-application"
          node.policy_group = "staging"
        end

        context "and the server supports policyfile attributes in node JSON" do

          it "creates the object normally" do
            expect(@rest).to receive(:post).with("nodes", node.for_json)
            node.create
          end

          it "saves the node object normally" do
            expect(@rest).to receive(:put).with("nodes/example-node", node.for_json)
            node.save
          end
        end

        # Chef Server before 12.3
        context "and the Chef Server does not support policyfile attributes in node JSON" do

          let(:response_body) { %q[{"error":["Invalid key policy_name in request body"]}] }

          let(:response) do
            Net::HTTPResponse.send(:response_class, "400").new("1.0", "400", "Bad Request").tap do |r|
              allow(r).to receive(:body).and_return(response_body)
            end
          end

          let(:http_exception) do
            begin
              response.error!
            rescue => e
              e
            end
          end

          let(:trimmed_node) do
            node.for_json.tap do |j|
              j.delete("policy_name")
              j.delete("policy_group")
            end

          end

          context "on Chef Client 13 and later" do

            # Though we normally attempt to provide compatibility with chef
            # server one major version back, policyfiles were beta when we
            # added the policyfile attributes to the node JSON, therefore
            # policyfile users need to be on 12.3 minimum when upgrading Chef
            # Client to 13+
            it "lets the 400 pass through", :chef_gte_13_only do
              expect { node.save }.to raise_error(http_exception)
            end

          end

          context "when the node exists" do

            it "falls back to saving without policyfile attributes" do
              expect(@rest).to receive(:put).with("nodes/example-node", node.for_json).and_raise(http_exception)
              expect(@rest).to receive(:put).with("nodes/example-node", trimmed_node).and_return(@node)
              expect { node.save }.to_not raise_error
            end

          end

          context "when the node doesn't exist" do

            let(:response_404) do
              Net::HTTPResponse.send(:response_class, "404").new("1.0", "404", "Not Found")
            end

            let(:http_exception_404) do
              begin
                response_404.error!
              rescue => e
                e
              end
            end

            it "falls back to saving without policyfile attributes" do
              expect(@rest).to receive(:put).with("nodes/example-node", node.for_json).and_raise(http_exception)
              expect(@rest).to receive(:put).with("nodes/example-node", trimmed_node).and_raise(http_exception_404)
              expect(@rest).to receive(:post).with("nodes", trimmed_node).and_return(@node)
              node.save
            end

            it "creates the node without policyfile attributes" do
              expect(@rest).to receive(:post).with("nodes", node.for_json).and_raise(http_exception)
              expect(@rest).to receive(:post).with("nodes", trimmed_node).and_return(@node)
              node.create
            end
          end

        end

      end

    end
  end

end