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
|
Code.require_file("../test_helper.exs", __DIR__)
defmodule IEx.AutocompleteTest do
use ExUnit.Case, async: true
setup do
evaluator = IEx.Server.start_evaluator([])
Process.put(:evaluator, evaluator)
:ok
end
defp eval(line) do
ExUnit.CaptureIO.capture_io(fn ->
evaluator = Process.get(:evaluator)
Process.group_leader(evaluator, Process.group_leader())
send(evaluator, {:eval, self(), line <> "\n", %IEx.State{}})
assert_receive {:evaled, _, _, _}
end)
end
defp expand(expr) do
IEx.Autocomplete.expand(Enum.reverse(expr), self())
end
test "Erlang module completion" do
assert expand(':zl') == {:yes, 'ib', []}
end
test "Erlang module no completion" do
assert expand(':unknown') == {:no, '', []}
end
test "Erlang module multiple values completion" do
{:yes, '', list} = expand(':user')
assert 'user' in list
assert 'user_drv' in list
end
test "Erlang root completion" do
{:yes, '', list} = expand(':')
assert is_list(list)
assert 'lists' in list
assert 'Elixir.List' not in list
end
test "Elixir proxy" do
{:yes, '', list} = expand('E')
assert 'Elixir' in list
end
test "Elixir completion" do
assert expand('En') == {:yes, 'um', []}
assert expand('Enumera') == {:yes, 'ble', []}
end
test "Elixir type completion" do
assert expand('t :gen_ser') == {:yes, 'ver', []}
assert expand('t String') == {:yes, '', ['String', 'StringIO']}
assert expand('t String.') == {:yes, '', ['codepoint/0', 'grapheme/0', 'pattern/0', 't/0']}
assert expand('t String.grap') == {:yes, 'heme', []}
assert expand('t String.grap') == {:yes, 'heme', []}
assert {:yes, '', ['date_time/0' | _]} = expand('t :file.')
assert expand('t :file.n') == {:yes, 'ame', []}
end
test "Elixir callback completion" do
assert expand('b :strin') == {:yes, 'g', []}
assert expand('b String') == {:yes, '', ['String', 'StringIO']}
assert expand('b String.') == {:no, '', []}
assert expand('b Access.') == {:yes, '', ['fetch/2', 'get_and_update/3', 'pop/2']}
assert expand('b GenServer.term') == {:yes, 'inate', []}
assert expand('b GenServer.term') == {:yes, 'inate', []}
assert expand('b :gen_server.handle_in') == {:yes, 'fo', []}
end
test "Elixir helper completion with parentheses" do
assert expand('t(:gen_ser') == {:yes, 'ver', []}
assert expand('t(String') == {:yes, '', ['String', 'StringIO']}
assert expand('t(String.') == {:yes, '', ['codepoint/0', 'grapheme/0', 'pattern/0', 't/0']}
assert expand('t(String.grap') == {:yes, 'heme', []}
end
test "Elixir completion with self" do
assert expand('Enumerable') == {:yes, '.', []}
end
test "Elixir completion on modules from load path" do
assert expand('Str') == {:yes, [], ['Stream', 'String', 'StringIO']}
assert expand('Ma') == {:yes, '', ['Macro', 'Map', 'MapSet', 'MatchError']}
assert expand('Dic') == {:yes, 't', []}
assert expand('Ex') == {:yes, [], ['ExUnit', 'Exception']}
end
test "Elixir no completion for underscored functions with no doc" do
{:module, _, bytecode, _} =
defmodule Elixir.Sample do
def __foo__(), do: 0
@doc "Bar doc"
def __bar__(), do: 1
end
File.write!("Elixir.Sample.beam", bytecode)
assert {:docs_v1, _, _, _, _, _, _} = Code.fetch_docs(Sample)
assert expand('Sample._') == {:yes, '_bar__', []}
after
File.rm("Elixir.Sample.beam")
:code.purge(Sample)
:code.delete(Sample)
end
test "Elixir no completion for default argument functions with doc set to false" do
{:yes, '', available} = expand('String.')
refute Enum.member?(available, 'rjust/2')
assert Enum.member?(available, 'replace/3')
assert expand('String.r') == {:yes, 'e', []}
{:module, _, bytecode, _} =
defmodule Elixir.DefaultArgumentFunctions do
def foo(a \\ :a, b, c \\ :c), do: {a, b, c}
def _do_fizz(a \\ :a, b, c \\ :c), do: {a, b, c}
@doc false
def __fizz__(a \\ :a, b, c \\ :c), do: {a, b, c}
@doc "bar/0 doc"
def bar(), do: :bar
@doc false
def bar(a \\ :a, b, c \\ :c, d \\ :d), do: {a, b, c, d}
@doc false
def bar(a, b, c, d, e), do: {a, b, c, d, e}
@doc false
def baz(a \\ :a), do: {a}
@doc "biz/3 doc"
def biz(a, b, c \\ :c), do: {a, b, c}
end
File.write!("Elixir.DefaultArgumentFunctions.beam", bytecode)
assert {:docs_v1, _, _, _, _, _, _} = Code.fetch_docs(DefaultArgumentFunctions)
functions_list = ['bar/0', 'biz/2', 'biz/3', 'foo/1', 'foo/2', 'foo/3']
assert expand('DefaultArgumentFunctions.') == {:yes, '', functions_list}
assert expand('DefaultArgumentFunctions.bi') == {:yes, 'z', []}
assert expand('DefaultArgumentFunctions.foo') == {:yes, '', ['foo/1', 'foo/2', 'foo/3']}
after
File.rm("Elixir.DefaultArgumentFunctions.beam")
:code.purge(DefaultArgumentFunctions)
:code.delete(DefaultArgumentFunctions)
end
test "Elixir no completion" do
assert expand('.') == {:no, '', []}
assert expand('Xyz') == {:no, '', []}
assert expand('x.Foo') == {:no, '', []}
assert expand('x.Foo.get_by') == {:no, '', []}
assert expand('@foo.bar') == {:no, '', []}
end
test "Elixir root submodule completion" do
assert expand('Elixir.Acce') == {:yes, 'ss', []}
end
test "Elixir submodule completion" do
assert expand('String.Cha') == {:yes, 'rs', []}
end
test "Elixir submodule no completion" do
assert expand('IEx.Xyz') == {:no, '', []}
end
test "function completion" do
assert expand('System.ve') == {:yes, 'rsion', []}
assert expand(':ets.fun2') == {:yes, 'ms', []}
end
test "function completion with arity" do
assert expand('String.printable?') == {:yes, '', ['printable?/1', 'printable?/2']}
assert expand('String.printable?/') == {:yes, '', ['printable?/1', 'printable?/2']}
assert expand('Enum.count') ==
{:yes, '', ['count/1', 'count/2', 'count_until/2', 'count_until/3']}
assert expand('Enum.count/') == {:yes, '', ['count/1', 'count/2']}
end
test "operator completion" do
assert expand('+') == {:yes, '', ['+/1', '+/2', '++/2']}
assert expand('+/') == {:yes, '', ['+/1', '+/2']}
assert expand('++/') == {:yes, '', ['++/2']}
end
test "sigil completion" do
{:yes, '', sigils} = expand('~')
assert '~C (sigil_C)' in sigils
{:yes, '', sigils} = expand('~r')
assert '"' in sigils
assert '(' in sigils
end
test "function completion using a variable bound to a module" do
eval("mod = String")
assert expand('mod.print') == {:yes, 'able?', []}
end
test "map atom key completion is supported" do
eval("map = %{foo: 1, bar_1: 23, bar_2: 14}")
assert expand('map.f') == {:yes, 'oo', []}
assert expand('map.b') == {:yes, 'ar_', []}
assert expand('map.bar_') == {:yes, '', ['bar_1', 'bar_2']}
assert expand('map.c') == {:no, '', []}
assert expand('map.') == {:yes, '', ['bar_1', 'bar_2', 'foo']}
assert expand('map.foo') == {:no, '', []}
end
test "nested map atom key completion is supported" do
eval("map = %{nested: %{deeply: %{foo: 1, bar_1: 23, bar_2: 14, mod: String, num: 1}}}")
assert expand('map.nested.deeply.f') == {:yes, 'oo', []}
assert expand('map.nested.deeply.b') == {:yes, 'ar_', []}
assert expand('map.nested.deeply.bar_') == {:yes, '', ['bar_1', 'bar_2']}
assert expand('map.nested.deeply.') == {:yes, '', ['bar_1', 'bar_2', 'foo', 'mod', 'num']}
assert expand('map.nested.deeply.mod.print') == {:yes, 'able?', []}
assert expand('map.nested') == {:yes, '.', []}
assert expand('map.nested.deeply') == {:yes, '.', []}
assert expand('map.nested.deeply.foo') == {:no, '', []}
assert expand('map.nested.deeply.c') == {:no, '', []}
assert expand('map.a.b.c.f') == {:no, '', []}
end
test "map string key completion is not supported" do
eval(~S(map = %{"foo" => 1}))
assert expand('map.f') == {:no, '', []}
end
test "bound variables for modules and maps" do
eval("num = 5; map = %{nested: %{num: 23}}")
assert expand('num.print') == {:no, '', []}
assert expand('map.nested.num.f') == {:no, '', []}
assert expand('map.nested.num.key.f') == {:no, '', []}
end
test "access syntax is not supported" do
eval("map = %{nested: %{deeply: %{num: 23}}}")
assert expand('map[:nested][:deeply].n') == {:no, '', []}
assert expand('map[:nested].deeply.n') == {:no, '', []}
assert expand('map.nested.[:deeply].n') == {:no, '', []}
end
test "unbound variables is not supported" do
eval("num = 5")
assert expand('other_var.f') == {:no, '', []}
assert expand('a.b.c.d') == {:no, '', []}
end
test "macro completion" do
{:yes, '', list} = expand('Kernel.is_')
assert is_list(list)
end
test "imports completion" do
{:yes, '', list} = expand('')
assert is_list(list)
assert 'h/1' in list
assert 'unquote/1' in list
assert 'pwd/0' in list
end
test "kernel import completion" do
assert expand('defstru') == {:yes, 'ct', []}
assert expand('put_') == {:yes, '', ['put_elem/3', 'put_in/2', 'put_in/3']}
end
test "variable name completion" do
eval("numeral = 3; number = 3; nothing = nil")
assert expand('numb') == {:yes, 'er', []}
assert expand('num') == {:yes, '', ['number', 'numeral']}
assert expand('no') == {:yes, '', ['nothing', 'node/0', 'node/1', 'not/1']}
end
test "completion of manually imported functions and macros" do
eval("import Enum; import Supervisor, only: [count_children: 1]; import Protocol")
assert expand('der') == {:yes, 'ive', []}
assert expand('take') ==
{:yes, '', ['take/2', 'take_every/2', 'take_random/2', 'take_while/2']}
assert expand('take/') == {:yes, '', ['take/2']}
assert expand('count') ==
{:yes, '',
['count/1', 'count/2', 'count_children/1', 'count_until/2', 'count_until/3']}
assert expand('count/') == {:yes, '', ['count/1', 'count/2']}
end
defmacro define_var do
quote(do: var!(my_var_1, Elixir) = 1)
end
test "ignores quoted variables when performing variable completion" do
eval("require #{__MODULE__}; #{__MODULE__}.define_var(); my_var_2 = 2")
assert expand('my_var') == {:yes, '_2', []}
end
test "kernel special form completion" do
assert expand('unquote_spl') == {:yes, 'icing', []}
end
test "completion inside expression" do
assert expand('1 En') == {:yes, 'um', []}
assert expand('Test(En') == {:yes, 'um', []}
assert expand('Test :zl') == {:yes, 'ib', []}
assert expand('[:zl') == {:yes, 'ib', []}
assert expand('{:zl') == {:yes, 'ib', []}
end
defmodule SublevelTest.LevelA.LevelB do
end
test "Elixir completion sublevel" do
assert expand('IEx.AutocompleteTest.SublevelTest.') == {:yes, 'LevelA', []}
end
test "complete aliases of Elixir modules" do
eval("alias List, as: MyList")
assert expand('MyL') == {:yes, 'ist', []}
assert expand('MyList') == {:yes, '.', []}
assert expand('MyList.to_integer') == {:yes, [], ['to_integer/1', 'to_integer/2']}
end
test "complete aliases of Erlang modules" do
eval("alias :lists, as: EList")
assert expand('EL') == {:yes, 'ist', []}
assert expand('EList') == {:yes, '.', []}
assert expand('EList.map') == {:yes, [], ['map/2', 'mapfoldl/3', 'mapfoldr/3']}
end
test "completion for functions added when compiled module is reloaded" do
{:module, _, bytecode, _} =
defmodule Sample do
def foo(), do: 0
end
File.write!("Elixir.IEx.AutocompleteTest.Sample.beam", bytecode)
assert {:docs_v1, _, _, _, _, _, _} = Code.fetch_docs(Sample)
assert expand('IEx.AutocompleteTest.Sample.foo') == {:yes, '', ['foo/0']}
Code.compiler_options(ignore_module_conflict: true)
defmodule Sample do
def foo(), do: 0
def foobar(), do: 0
end
assert expand('IEx.AutocompleteTest.Sample.foo') == {:yes, '', ['foo/0', 'foobar/0']}
after
File.rm("Elixir.IEx.AutocompleteTest.Sample.beam")
Code.compiler_options(ignore_module_conflict: false)
:code.purge(Sample)
:code.delete(Sample)
end
defmodule MyStruct do
defstruct [:my_val]
end
test "completion for struct names" do
assert {:yes, '', entries} = expand('%')
assert 'URI' in entries
assert 'IEx.History' in entries
assert 'IEx.State' in entries
assert {:yes, '', entries} = expand('%IEx.')
assert 'IEx.History' in entries
assert 'IEx.State' in entries
assert expand('%IEx.AutocompleteTe') == {:yes, 'st.MyStruct{', []}
assert expand('%IEx.AutocompleteTest.MyStr') == {:yes, 'uct{', []}
eval("alias IEx.AutocompleteTest.MyStruct")
assert expand('%MyStr') == {:yes, 'uct{', []}
end
test "completion for struct keys" do
assert {:yes, '', entries} = expand('%URI{')
assert 'path:' in entries
assert 'query:' in entries
assert {:yes, '', entries} = expand('%URI{path: "foo",')
assert 'path:' not in entries
assert 'query:' in entries
assert {:yes, 'ry: ', []} = expand('%URI{path: "foo", que')
assert {:no, [], []} = expand('%URI{path: "foo", unkno')
assert {:no, [], []} = expand('%Unkown{path: "foo", unkno')
end
test "completion for struct var keys" do
eval("struct = %IEx.AutocompleteTest.MyStruct{}")
assert expand('struct.my') == {:yes, '_val', []}
end
test "completion for bitstring modifiers" do
assert {:yes, '', entries} = expand('<<foo::')
assert 'integer' in entries
assert 'size/1' in entries
assert {:yes, 'eger', []} = expand('<<foo::int')
assert {:yes, '', entries} = expand('<<foo::integer-')
refute 'integer' in entries
assert 'size/1' in entries
end
test "ignore invalid Elixir module literals" do
defmodule(:"Elixir.IEx.AutocompleteTest.Unicodé", do: nil)
assert expand('IEx.AutocompleteTest.Unicod') == {:no, '', []}
after
:code.purge(:"Elixir.IEx.AutocompleteTest.Unicodé")
:code.delete(:"Elixir.IEx.AutocompleteTest.Unicodé")
end
test "signature help for functions and macros" do
assert expand('String.graphemes(') == {:yes, '', ['graphemes(string)']}
assert expand('def ') == {:yes, '', ['def(call, expr \\\\ nil)']}
eval("import Enum; import Protocol")
assert ExUnit.CaptureIO.capture_io(fn ->
send(self(), expand('reduce('))
end) == "\nreduce(enumerable, acc, fun)"
assert_received {:yes, '', ['reduce(enumerable, fun)']}
assert expand('take(') == {:yes, '', ['take(enumerable, amount)']}
assert expand('derive(') == {:yes, '', ['derive(protocol, module, options \\\\ [])']}
defmodule NoDocs do
def sample(a), do: a
end
assert {:yes, [], [_ | _]} = expand('NoDocs.sample(')
end
@tag :tmp_dir
test "path completion inside strings", %{tmp_dir: dir} do
dir |> Path.join("single1") |> File.touch()
dir |> Path.join("file1") |> File.touch()
dir |> Path.join("file2") |> File.touch()
dir |> Path.join("dir") |> File.mkdir()
dir |> Path.join("dir/file3") |> File.touch()
dir |> Path.join("dir/file4") |> File.touch()
assert expand('"./') == path_autocompletion(".")
assert expand('"/') == path_autocompletion("/")
assert expand('"./#\{') == expand('{')
assert expand('"./#\{Str') == expand('{Str')
assert expand('Path.join("./", is_') == expand('is_')
assert expand('"#{dir}/') == path_autocompletion(dir)
assert expand('"#{dir}/sin') == {:yes, 'gle1', []}
assert expand('"#{dir}/single1') == {:yes, '"', []}
assert expand('"#{dir}/fi') == {:yes, 'le', []}
assert expand('"#{dir}/file') == path_autocompletion(dir, "file")
assert expand('"#{dir}/d') == {:yes, 'ir/', []}
assert expand('"#{dir}/dir') == {:yes, '/', []}
assert expand('"#{dir}/dir/') == {:yes, 'file', []}
assert expand('"#{dir}/dir/file') == dir |> Path.join("dir") |> path_autocompletion("file")
end
defp path_autocompletion(dir, hint \\ "") do
dir
|> File.ls!()
|> Stream.filter(&String.starts_with?(&1, hint))
|> Enum.map(&String.to_charlist/1)
|> case do
[] -> {:no, '', []}
list -> {:yes, '', list}
end
end
end
|