summaryrefslogtreecommitdiff
path: root/spec/unit/provider/package/rubygems_spec.rb
blob: 141e2bd38339b3302ddbaf8896e41c7ca3a7ff4b (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
#
# Author:: David Balatero (dbalatero@gmail.com)
#
# Copyright:: Copyright 2009-2016, David Balatero
# 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 "pp"

module GemspecBackcompatCreator
  def gemspec(name, version)
    if Gem::Specification.new.method(:initialize).arity == 0
      Gem::Specification.new { |s| s.name = name; s.version = version }
    else
      Gem::Specification.new(name, version)
    end
  end
end

require "spec_helper"
require "ostruct"

describe Chef::Provider::Package::Rubygems::CurrentGemEnvironment do
  include GemspecBackcompatCreator

  before do
    @gem_env = Chef::Provider::Package::Rubygems::CurrentGemEnvironment.new
  end

  it "determines the gem paths from the in memory rubygems" do
    expect(@gem_env.gem_paths).to eq(Gem.path)
  end

  it "determines the installed versions of gems from Gem.source_index" do
    gems = [gemspec("rspec-core", Gem::Version.new("1.2.9")), gemspec("rspec-core", Gem::Version.new("1.3.0"))]
    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new("1.8.0")
      expect(Gem::Specification).to receive(:find_all_by_name).with("rspec-core", Gem::Dependency.new("rspec-core").requirement).and_return(gems)
    else
      expect(Gem.source_index).to receive(:search).with(Gem::Dependency.new("rspec-core", nil)).and_return(gems)
    end
    expect(@gem_env.installed_versions(Gem::Dependency.new("rspec-core", nil))).to eq(gems)
  end

  it "determines the installed versions of gems from the source index (part2: the unmockening)" do
    expected = ["rspec-core", Gem::Version.new(RSpec::Core::Version::STRING)]
    actual = @gem_env.installed_versions(Gem::Dependency.new("rspec-core", nil)).map { |spec| [spec.name, spec.version] }
    expect(actual).to include(expected)
  end

  it "yields to a block with an alternate source list set" do
    sources_in_block = nil
    normal_sources = Gem.sources
    begin
      @gem_env.with_gem_sources("http://gems.example.org") do
        sources_in_block = Gem.sources
        raise RuntimeError, "sources should be reset even in case of an error"
      end
    rescue RuntimeError
    end
    expect(sources_in_block).to eq(%w{http://gems.example.org})
    expect(Gem.sources).to eq(normal_sources)
  end

  it "it doesnt alter the gem sources if none are set" do
    sources_in_block = nil
    normal_sources = Gem.sources
    begin
      @gem_env.with_gem_sources(nil) do
        sources_in_block = Gem.sources
        raise RuntimeError, "sources should be reset even in case of an error"
      end
    rescue RuntimeError
    end
    expect(sources_in_block).to eq(normal_sources)
    expect(Gem.sources).to eq(normal_sources)
  end

  it "finds a matching gem candidate version" do
    dep = Gem::Dependency.new("rspec", ">= 0")
    dep_installer = Gem::DependencyInstaller.new
    allow(@gem_env).to receive(:dependency_installer).and_return(dep_installer)
    latest = [[gemspec("rspec", Gem::Version.new("1.3.0")), "https://rubygems.org/"]]
    expect(dep_installer).to receive(:find_gems_with_sources).with(dep).and_return(latest)
    expect(@gem_env.candidate_version_from_remote(Gem::Dependency.new("rspec", ">= 0"))).to eq(Gem::Version.new("1.3.0"))
  end

  it "finds a matching gem candidate version on rubygems 2.0.0+" do
    dep = Gem::Dependency.new("rspec", ">= 0")
    dep_installer = Gem::DependencyInstaller.new
    allow(@gem_env).to receive(:dependency_installer).and_return(dep_installer)
    best_gem = double("best gem match", :spec => gemspec("rspec", Gem::Version.new("1.3.0")), :source => "https://rubygems.org")
    available_set = double("Gem::AvailableSet test double")
    expect(available_set).to receive(:pick_best!)
    expect(available_set).to receive(:set).and_return([best_gem])
    expect(dep_installer).to receive(:find_gems_with_sources).with(dep).and_return(available_set)
    expect(@gem_env.candidate_version_from_remote(Gem::Dependency.new("rspec", ">= 0"))).to eq(Gem::Version.new("1.3.0"))
  end

  it "gives the candidate version as nil if none is found" do
    dep = Gem::Dependency.new("rspec", ">= 0")
    latest = []
    dep_installer = Gem::DependencyInstaller.new
    allow(@gem_env).to receive(:dependency_installer).and_return(dep_installer)
    expect(dep_installer).to receive(:find_gems_with_sources).with(dep).and_return(latest)
    expect(@gem_env.candidate_version_from_remote(Gem::Dependency.new("rspec", ">= 0"))).to be_nil
  end

  it "finds a matching candidate version from a .gem file when the path to the gem is supplied" do
    location = CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem"
    expect(@gem_env.candidate_version_from_file(Gem::Dependency.new("chef-integration-test", ">= 0"), location)).to eq(Gem::Version.new("0.1.0"))
    expect(@gem_env.candidate_version_from_file(Gem::Dependency.new("chef-integration-test", ">= 0.2.0"), location)).to be_nil
  end

  it "finds a matching gem from a specific gemserver when explicit sources are given" do
    dep = Gem::Dependency.new("rspec", ">= 0")
    latest = [[gemspec("rspec", Gem::Version.new("1.3.0")), "https://rubygems.org/"]]

    expect(@gem_env).to receive(:with_gem_sources).with("http://gems.example.com").and_yield
    dep_installer = Gem::DependencyInstaller.new
    allow(@gem_env).to receive(:dependency_installer).and_return(dep_installer)
    expect(dep_installer).to receive(:find_gems_with_sources).with(dep).and_return(latest)
    expect(@gem_env.candidate_version_from_remote(Gem::Dependency.new("rspec", ">=0"), "http://gems.example.com")).to eq(Gem::Version.new("1.3.0"))
  end

  it "installs a gem with a hash of options for the dependency installer" do
    dep_installer = Gem::DependencyInstaller.new
    expect(@gem_env).to receive(:dependency_installer).with(:install_dir => "/foo/bar").and_return(dep_installer)
    expect(@gem_env).to receive(:with_gem_sources).with("http://gems.example.com").and_yield
    expect(dep_installer).to receive(:install).with(Gem::Dependency.new("rspec", ">= 0"))
    @gem_env.install(Gem::Dependency.new("rspec", ">= 0"), :install_dir => "/foo/bar", :sources => ["http://gems.example.com"])
  end

  it "builds an uninstaller for a gem with options set to avoid requiring user input" do
    # default options for uninstaller should be:
    # :ignore => true, :executables => true
    expect(Gem::Uninstaller).to receive(:new).with("rspec", :ignore => true, :executables => true)
    @gem_env.uninstaller("rspec")
  end

  it "uninstalls all versions of a gem" do
    uninstaller = double("gem uninstaller")
    expect(uninstaller).to receive(:uninstall)
    expect(@gem_env).to receive(:uninstaller).with("rspec", :all => true).and_return(uninstaller)
    @gem_env.uninstall("rspec")
  end

  it "uninstalls a specific version of a gem" do
    uninstaller = double("gem uninstaller")
    expect(uninstaller).to receive(:uninstall)
    expect(@gem_env).to receive(:uninstaller).with("rspec", :version => "1.2.3").and_return(uninstaller)
    @gem_env.uninstall("rspec", "1.2.3")
  end

end

describe Chef::Provider::Package::Rubygems::AlternateGemEnvironment do
  include GemspecBackcompatCreator

  before do
    Chef::Provider::Package::Rubygems::AlternateGemEnvironment.gempath_cache.clear
    Chef::Provider::Package::Rubygems::AlternateGemEnvironment.platform_cache.clear
    @gem_env = Chef::Provider::Package::Rubygems::AlternateGemEnvironment.new("/usr/weird/bin/gem")
  end

  it "determines the gem paths from shelling out to gem env" do
    gem_env_output = ["/path/to/gems", "/another/path/to/gems"].join(File::PATH_SEPARATOR)
    shell_out_result = OpenStruct.new(:stdout => gem_env_output)
    expect(@gem_env).to receive(:shell_out!).with("/usr/weird/bin/gem env gempath").and_return(shell_out_result)
    expect(@gem_env.gem_paths).to eq(["/path/to/gems", "/another/path/to/gems"])
  end

  it "caches the gempaths by gem_binary" do
    gem_env_output = ["/path/to/gems", "/another/path/to/gems"].join(File::PATH_SEPARATOR)
    shell_out_result = OpenStruct.new(:stdout => gem_env_output)
    expect(@gem_env).to receive(:shell_out!).with("/usr/weird/bin/gem env gempath").and_return(shell_out_result)
    expected = ["/path/to/gems", "/another/path/to/gems"]
    expect(@gem_env.gem_paths).to eq(["/path/to/gems", "/another/path/to/gems"])
    expect(Chef::Provider::Package::Rubygems::AlternateGemEnvironment.gempath_cache["/usr/weird/bin/gem"]).to eq(expected)
  end

  it "uses the cached result for gem paths when available" do
    expect(@gem_env).not_to receive(:shell_out!)
    expected = ["/path/to/gems", "/another/path/to/gems"]
    Chef::Provider::Package::Rubygems::AlternateGemEnvironment.gempath_cache["/usr/weird/bin/gem"] = expected
    expect(@gem_env.gem_paths).to eq(["/path/to/gems", "/another/path/to/gems"])
  end

  it "builds the gems source index from the gem paths" do
    allow(@gem_env).to receive(:gem_paths).and_return(["/path/to/gems", "/another/path/to/gems"])
    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new("1.8.0")
      @gem_env.gem_specification
      expect(Gem::Specification.dirs).to eq([ "/path/to/gems/specifications", "/another/path/to/gems/specifications" ])
    else
      expect(Gem::SourceIndex).to receive(:from_gems_in).with("/path/to/gems/specifications", "/another/path/to/gems/specifications")
      @gem_env.gem_source_index
    end
  end

  it "determines the installed versions of gems from the source index" do
    gems = [gemspec("rspec", Gem::Version.new("1.2.9")), gemspec("rspec", Gem::Version.new("1.3.0"))]
    rspec_dep = Gem::Dependency.new("rspec", nil)
    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new("1.8.0")
      allow(@gem_env).to receive(:gem_specification).and_return(Gem::Specification)
      expect(@gem_env.gem_specification).to receive(:find_all_by_name).with(rspec_dep.name, rspec_dep.requirement).and_return(gems)
    else
      allow(@gem_env).to receive(:gem_source_index).and_return(Gem.source_index)
      expect(@gem_env.gem_source_index).to receive(:search).with(rspec_dep).and_return(gems)
    end
    expect(@gem_env.installed_versions(Gem::Dependency.new("rspec", nil))).to eq(gems)
  end

  it "determines the installed versions of gems from the source index (part2: the unmockening)" do
    allow($stdout).to receive(:write)
    path_to_gem = if windows?
                    `where gem`.split[1]
                  else
                    `which gem`.strip
                  end
    skip("cant find your gem executable") if path_to_gem.empty?
    gem_env = Chef::Provider::Package::Rubygems::AlternateGemEnvironment.new(path_to_gem)
    expected = ["rspec-core", Gem::Version.new(RSpec::Core::Version::STRING)]
    actual = gem_env.installed_versions(Gem::Dependency.new("rspec-core", nil)).map { |s| [s.name, s.version] }
    expect(actual).to include(expected)
  end

  it "detects when the target gem environment is the jruby platform" do
    gem_env_out = <<-JRUBY_GEM_ENV
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.6
  - RUBY VERSION: 1.8.7 (2010-05-12 patchlevel 249) [java]
  - INSTALLATION DIRECTORY: /Users/you/.rvm/gems/jruby-1.5.0
  - RUBY EXECUTABLE: /Users/you/.rvm/rubies/jruby-1.5.0/bin/jruby
  - EXECUTABLE DIRECTORY: /Users/you/.rvm/gems/jruby-1.5.0/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - universal-java-1.6
  - GEM PATHS:
     - /Users/you/.rvm/gems/jruby-1.5.0
     - /Users/you/.rvm/gems/jruby-1.5.0@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "install" => "--env-shebang"
     - "update" => "--env-shebang"
     - "gem" => "--no-rdoc --no-ri"
     - :sources => ["https://rubygems.org/", "http://gems.github.com/"]
  - REMOTE SOURCES:
     - https://rubygems.org/
     - http://gems.github.com/
    JRUBY_GEM_ENV
    expect(@gem_env).to receive(:shell_out!).with("/usr/weird/bin/gem env").and_return(double("jruby_gem_env", :stdout => gem_env_out))
    expected = ["ruby", Gem::Platform.new("universal-java-1.6")]
    expect(@gem_env.gem_platforms).to eq(expected)
    # it should also cache the result
    expect(Chef::Provider::Package::Rubygems::AlternateGemEnvironment.platform_cache["/usr/weird/bin/gem"]).to eq(expected)
  end

  it "uses the cached result for gem platforms if available" do
    expect(@gem_env).not_to receive(:shell_out!)
    expected = ["ruby", Gem::Platform.new("universal-java-1.6")]
    Chef::Provider::Package::Rubygems::AlternateGemEnvironment.platform_cache["/usr/weird/bin/gem"] = expected
    expect(@gem_env.gem_platforms).to eq(expected)
  end

  it "uses the current gem platforms when the target env is not jruby" do
    gem_env_out = <<-RBX_GEM_ENV
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.6
  - RUBY VERSION: 1.8.7 (2010-05-14 patchlevel 174) [x86_64-apple-darwin10.3.0]
  - INSTALLATION DIRECTORY: /Users/ddeleo/.rvm/gems/rbx-1.0.0-20100514
  - RUBYGEMS PREFIX: /Users/ddeleo/.rvm/rubies/rbx-1.0.0-20100514
  - RUBY EXECUTABLE: /Users/ddeleo/.rvm/rubies/rbx-1.0.0-20100514/bin/rbx
  - EXECUTABLE DIRECTORY: /Users/ddeleo/.rvm/gems/rbx-1.0.0-20100514/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-10
    - x86_64-rubinius-1.0
  - GEM PATHS:
     - /Users/ddeleo/.rvm/gems/rbx-1.0.0-20100514
     - /Users/ddeleo/.rvm/gems/rbx-1.0.0-20100514@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["https://rubygems.org/", "http://gems.github.com/"]
     - "gem" => "--no-rdoc --no-ri"
  - REMOTE SOURCES:
     - https://rubygems.org/
     - http://gems.github.com/
    RBX_GEM_ENV
    expect(@gem_env).to receive(:shell_out!).with("/usr/weird/bin/gem env").and_return(double("rbx_gem_env", :stdout => gem_env_out))
    expect(@gem_env.gem_platforms).to eq(Gem.platforms)
    expect(Chef::Provider::Package::Rubygems::AlternateGemEnvironment.platform_cache["/usr/weird/bin/gem"]).to eq(Gem.platforms)
  end

  it "yields to a block while masquerading as a different gems platform" do
    original_platforms = Gem.platforms
    platforms_in_block = nil
    begin
      @gem_env.with_gem_platforms(["ruby", Gem::Platform.new("sparc64-java-1.7")]) do
        platforms_in_block = Gem.platforms
        raise "gem platforms should get set to the correct value even when an error occurs"
      end
    rescue RuntimeError
    end
    expect(platforms_in_block).to eq(["ruby", Gem::Platform.new("sparc64-java-1.7")])
    expect(Gem.platforms).to eq(original_platforms)
  end

end

describe Chef::Provider::Package::Rubygems do
  let(:target_version) { nil }
  let(:gem_name) { "rspec-core" }
  let(:gem_binary) { nil }
  let(:bindir) { "/usr/bin/ruby" }
  let(:options) { nil }
  let(:source) { nil }

  let(:new_resource) do
    new_resource = Chef::Resource::GemPackage.new(gem_name)
    new_resource.version(target_version)
    new_resource.gem_binary(gem_binary) if gem_binary
    new_resource.options(options) if options
    new_resource.source(source) if source
    new_resource
  end

  let (:current_resource) { nil }

  let(:provider) do
    run_context = Chef::RunContext.new(Chef::Node.new, {}, Chef::EventDispatch::Dispatcher.new)
    provider = Chef::Provider::Package::Rubygems.new(new_resource, run_context)
    if current_resource
      allow(provider).to receive(:load_current_resource)
      provider.current_resource = current_resource
    end
    provider
  end

  let(:gem_dep) { Gem::Dependency.new(gem_name, target_version) }

  before(:each) do
    # We choose detect omnibus via RbConfig::CONFIG['bindir'] in Chef::Provider::Package::Rubygems.new
    allow(RbConfig::CONFIG).to receive(:[]).with("bindir").and_return(bindir)
    # Rubygems uses this interally
    allow(RbConfig::CONFIG).to receive(:[]).with("arch").and_call_original
  end

  describe "when new_resource version is nil" do
    let(:target_version) { nil }

    it "target_version_already_installed? should return false so that we can search for candidates" do
      provider.load_current_resource
      expect(provider.target_version_already_installed?(provider.current_resource.version, new_resource.version)).to be_falsey
    end
  end

  describe "when new_resource version is an rspec version" do
    let(:current_version) { RSpec::Core::Version::STRING }
    let(:target_version) { current_version }

    it "triggers a gem configuration load so a later one will not stomp its config values" do
      _ = provider
      # ugly, is there a better way?
      expect(Gem.instance_variable_get(:@configuration)).not_to be_nil
    end

    it "uses the CurrentGemEnvironment implementation when no gem_binary_path is provided" do
      expect(provider.gem_env).to be_a_kind_of(Chef::Provider::Package::Rubygems::CurrentGemEnvironment)
    end

    context "when a gem_binary_path is provided" do
      let(:gem_binary) { "/usr/weird/bin/gem" }

      it "uses the AlternateGemEnvironment implementation when a gem_binary_path is provided" do
        expect(provider.gem_env.gem_binary_location).to eq(gem_binary)
      end

      context "when you try to use a hash of install options" do
        let(:options) { { :fail => :burger } }

        it "smites you" do
          expect { provider }.to raise_error(ArgumentError)
        end
      end
    end

    context "when in omnibus opscode" do
      let(:bindir) { "/opt/opscode/embedded/bin" }

      it "recognizes opscode as omnibus" do
        expect(provider.is_omnibus?).to be true
      end
    end

    context "when in omnibus chefdk" do
      let(:bindir) { "/opt/chefdk/embedded/bin" }

      it "recognizes chefdk as omnibus" do
        expect(provider.is_omnibus?).to be true
      end
    end

    context "when in omnibus chef" do
      let(:bindir) { "/opt/chef/embedded/bin" }

      it "recognizes chef as omnibus" do
        expect(provider.is_omnibus?).to be true
      end

      it "searches for a gem binary when running on Omnibus on Unix" do
        platform_mock :unix do
          allow(ENV).to receive(:[]).with("PATH").and_return("/usr/bin:/usr/sbin:/opt/chef/embedded/bin")
          allow(File).to receive(:exists?).with("/usr/bin/gem").and_return(false)
          allow(File).to receive(:exists?).with("/usr/sbin/gem").and_return(true)
          allow(File).to receive(:exists?).with("/opt/chef/embedded/bin/gem").and_return(true) # should not get here
          expect(provider.gem_env.gem_binary_location).to eq("/usr/sbin/gem")
        end
      end

      context "when on Windows" do
        let(:bindir) { "d:/opscode/chef/embedded/bin" }

        it "searches for a gem binary when running on Omnibus on Windows" do
          platform_mock :windows do
            allow(ENV).to receive(:[]).with("PATH").and_return('C:\windows\system32;C:\windows;C:\Ruby186\bin;d:\opscode\chef\embedded\bin')
            allow(File).to receive(:exists?).with('C:\\windows\\system32\\gem').and_return(false)
            allow(File).to receive(:exists?).with('C:\\windows\\gem').and_return(false)
            allow(File).to receive(:exists?).with('C:\\Ruby186\\bin\\gem').and_return(true)
            allow(File).to receive(:exists?).with('d:\\opscode\\chef\\bin\\gem').and_return(false) # should not get here
            allow(File).to receive(:exists?).with('d:\\opscode\\chef\\embedded\\bin\\gem').and_return(false) # should not get here
            expect(provider.gem_env.gem_binary_location).to eq('C:\Ruby186\bin\gem')
          end
        end
      end
    end

    it "converts the new resource into a gem dependency" do
      expect(provider.gem_dependency).to eq(gem_dep)
    end

    context "when the new resource is not the current version" do
      let(:target_version) { "~> 9000.0.2" }

      it "converts the new resource into a gem dependency" do
        expect(provider.gem_dependency).to eq(gem_dep)
      end
    end

    describe "when determining the currently installed version" do
      before do
        provider.load_current_resource
      end

      it "sets the current version to the version specified by the new resource if that version is installed" do
        expect(provider.current_resource.version).to eq(current_version)
      end

      context "if the requested version is not installed" do
        let(:target_version) { "9000.0.2" }

        it "sets the current version to the highest installed version if the requested version is not installed" do
          expect(provider.current_resource.version).to eq(current_version)
        end
      end

      context "if the package is not currently installed" do
        let(:gem_name) { "no-such-gem-should-exist-with-this-name" }

        it "leaves the current version at nil" do
          expect(provider.current_resource.version).to be_nil
        end
      end

    end

    describe "when determining the candidate version to install" do
      before do
        provider.load_current_resource
      end

      it "does not query for available versions when the current version is the target version" do
        expect(provider.candidate_version).to be_nil
      end

      context "when the current version is not the target version" do
        let(:target_version) { "9000.0.2" }
        let(:source) { "http://mygems.example.com" }

        it "determines the candidate version by querying the remote gem servers" do
          expect(provider.gem_env).to receive(:candidate_version_from_remote).
            with(gem_dep, source).
            and_return(Gem::Version.new(target_version))
          expect(provider.candidate_version).to eq(target_version)
        end
      end

      context "when the requested source is a file" do
        let (:gem_name) { "chef-integration-test" }
        let (:source) { CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem" }
        let (:target_version) { ">= 0" }

        it "parses the gem's specification" do
          expect(provider.candidate_version).to eq("0.1.0")
        end
      end

    end

    describe "when installing a gem" do
      let(:target_version) { "9000.0.2" }
      let(:current_version) { nil }
      let(:candidate_version) { "9000.0.2" }
      let(:current_resource) do
        current_resource = Chef::Resource::GemPackage.new(gem_name)
        current_resource.version(current_version)
        current_resource
      end

      before do
        version = Gem::Version.new(candidate_version)
        args = [gem_dep]
        args << source if source
        allow(provider.gem_env).to receive(:candidate_version_from_remote).
          with(*args).
          and_return(version)
      end

      describe "in the current gem environment" do
        it "installs the gem via the gems api when no explicit options are used" do
          expect(provider.gem_env).to receive(:install).with(gem_dep, :sources => nil)
          provider.run_action(:install)
          expect(new_resource).to be_updated_by_last_action
        end

        context "when a remote source is provided" do
          let(:source) { "http://gems.example.org" }

          it "installs the gem via the gems api" do
            expect(provider.gem_env).to receive(:install).with(gem_dep, :sources => [source])
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when source is a path" do
          let(:source) { CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem" }

          it "installs the gem from file via the gems api" do
            expect(provider.gem_env).to receive(:install).with(source)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when the gem name is a file path and source is nil" do
          let(:gem_name) { CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem" }

          it "installs the gem from file via the gems api" do
            expect(new_resource.source).to eq(gem_name)
            expect(provider.gem_env).to receive(:install).with(gem_name)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        # this catches 'gem_package "foo"' when "./foo" is a file in the cwd, and instead of installing './foo' it fetches the remote gem
        it "installs the gem via the gems api, when the package has no file separator characters in it, but a matching file exists in cwd" do
          allow(::File).to receive(:exists?).and_return(true)
          new_resource.package_name("rspec-core")
          expect(provider.gem_env).to receive(:install).with(gem_dep, :sources => nil)
          provider.run_action(:install)
          expect(new_resource).to be_updated_by_last_action
        end

        context "when options are provided as a String" do
          let(:options) { "-i /alt/install/location" }

          it "installs the gem by shelling out when options are provided as a String" do
            expected = "gem install rspec-core -q --no-rdoc --no-ri -v \"#{target_version}\" #{options}"
            expect(provider).to receive(:shell_out!).with(expected, env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when another source and binary are provided" do
          let(:source) { "http://mirror.ops.rhcloud.com/mirror/ruby" }
          let(:gem_binary) { "/foo/bar" }

          it "installs the gem with rubygems.org as an added source" do
            expected = "#{gem_binary} install rspec-core -q --no-rdoc --no-ri -v \"#{target_version}\" --source=#{source} --source=https://rubygems.org"
            expect(provider).to receive(:shell_out!).with(expected, env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when we have cleared sources and an explict source is specified" do
          let(:gem_binary) { "/foo/bar" }
          let(:source) { "http://mirror.ops.rhcloud.com/mirror/ruby" }

          it "installs the gem" do
            new_resource.clear_sources(true)
            expected = "#{gem_binary} install rspec-core -q --no-rdoc --no-ri -v \"#{target_version}\" --clear-sources --source=#{source}"
            expect(provider).to receive(:shell_out!).with(expected, env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when no version is given" do
          let(:target_version) { nil }
          let(:options) { "-i /alt/install/location" }

          it "installs the gem by shelling out when options are provided but no version is given" do
            expected = "gem install rspec-core -q --no-rdoc --no-ri -v \"#{candidate_version}\" #{options}"
            expect(provider).to receive(:shell_out!).with(expected, env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when options are given as a Hash" do
          let(:options) { { :install_dir => "/alt/install/location" } }

          it "installs the gem via the gems api when options are given as a Hash" do
            expect(provider.gem_env).to receive(:install).with(gem_dep, { :sources => nil }.merge(options))
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        describe "at a specific version" do
          let(:target_version) { "9000.0.2" }

          it "installs the gem via the gems api" do
            expect(provider.gem_env).to receive(:install).with(gem_dep, :sources => nil)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        describe "at version specified with comparison operator" do
          context "if current version satisifies requested version" do
            let(:target_version) { ">=2.3.0" }
            let(:current_version) { "2.3.3" }

            it "skips the install" do
              expect(provider.gem_env).not_to receive(:install)
              provider.run_action(:install)
            end
          end

          context "if the fuzzy operator is used" do
            let(:target_version) { "~>2.3.0" }
            let(:current_version) { "2.3.3" }

            it "it matches an existing gem" do
              expect(provider.gem_env).not_to receive(:install)
              provider.run_action(:install)
            end
          end
        end
      end

      describe "in an alternate gem environment" do
        let(:gem_binary) { "/usr/weird/bin/gem" }

        it "installs the gem by shelling out to gem install" do
          expect(provider).to receive(:shell_out!).with("#{gem_binary} install rspec-core -q --no-rdoc --no-ri -v \"#{target_version}\"", env: nil, timeout: 900)
          provider.run_action(:install)
          expect(new_resource).to be_updated_by_last_action
        end

        context "when source is a path" do
          let(:source) { CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem" }
          let(:target_version) { ">= 0" }

          it "installs the gem by shelling out to gem install" do
            expect(provider).to receive(:shell_out!).with("#{gem_binary} install #{source} -q --no-rdoc --no-ri -v \"#{target_version}\"", env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end

        context "when the package is a path and source is nil" do
          let(:gem_name) { CHEF_SPEC_DATA + "/gems/chef-integration-test-0.1.0.gem" }
          let(:target_version) { ">= 0" }

          it "installs the gem from file by shelling out to gem install when the package is a path and the source is nil" do
            expect(new_resource.source).to eq(gem_name)
            expect(provider).to receive(:shell_out!).with("#{gem_binary} install #{gem_name} -q --no-rdoc --no-ri -v \"#{target_version}\"", env: nil, timeout: 900)
            provider.run_action(:install)
            expect(new_resource).to be_updated_by_last_action
          end
        end
      end

    end

    describe "when uninstalling a gem" do
      let(:gem_name) { "rspec" }
      let(:current_version) { "1.2.3" }
      let(:target_version) { nil }

      let(:current_resource) do
        current_resource = Chef::Resource::GemPackage.new(gem_name)
        current_resource.version(current_version)
        current_resource
      end

      describe "in the current gem environment" do
        it "uninstalls via the api when no explicit options are used" do
          # pre-reqs for action_remove to actually remove the package:
          expect(provider.new_resource.version).to be_nil
          expect(provider.current_resource.version).not_to be_nil
          # the behavior we're testing:
          expect(provider.gem_env).to receive(:uninstall).with("rspec", nil)
          provider.action_remove
        end

        context "when options are given as a Hash" do
          let(:options) { { :install_dir => "/alt/install/location" } }

          it "uninstalls via the api" do
            # pre-reqs for action_remove to actually remove the package:
            expect(provider.new_resource.version).to be_nil
            expect(provider.current_resource.version).not_to be_nil
            # the behavior we're testing:
            expect(provider.gem_env).to receive(:uninstall).with("rspec", nil, options)
            provider.action_remove
          end
        end

        context "when options are given as a String" do
          let(:options) { "-i /alt/install/location" }

          it "uninstalls via the gem command" do
            expect(provider).to receive(:shell_out!).with("gem uninstall rspec -q -x -I -a #{options}", env: nil, timeout: 900)
            provider.action_remove
          end
        end

        context "when a version is provided" do
          let(:target_version) { "1.2.3" }

          it "uninstalls a specific version of a gem" do
            expect(provider.gem_env).to receive(:uninstall).with("rspec", "1.2.3")
            provider.action_remove
          end
        end
      end

      describe "in an alternate gem environment" do
        let(:gem_binary) { "/usr/weird/bin/gem" }

        it "uninstalls via the gem command" do
          expect(provider).to receive(:shell_out!).with("#{gem_binary} uninstall rspec -q -x -I -a", env: nil, timeout: 900)
          provider.action_remove
        end
      end
    end
  end
end