summaryrefslogtreecommitdiff
path: root/test/irb/test_context.rb
blob: 3a4c98729ea3e5742ba6d7eb6517b0b1070e3c1f (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
# frozen_string_literal: false
require 'test/unit'
require 'tempfile'
require 'irb'
require 'rubygems' if defined?(Gem)

module TestIRB
  class TestContext < Test::Unit::TestCase
    class TestInputMethod < ::IRB::InputMethod
      attr_reader :list, :line_no

      def initialize(list = [])
        super("test")
        @line_no = 0
        @list = list
      end

      def gets
        @list[@line_no]&.tap {@line_no += 1}
      end

      def eof?
        @line_no >= @list.size
      end

      def encoding
        Encoding.default_external
      end

      def reset
        @line_no = 0
      end

      def winsize
        [10, 20]
      end
    end

    def setup
      IRB.init_config(nil)
      IRB.conf[:USE_SINGLELINE] = false
      IRB.conf[:VERBOSE] = false
      workspace = IRB::WorkSpace.new(Object.new)
      @context = IRB::Context.new(nil, workspace, TestInputMethod.new)
    end

    def test_last_value
      assert_nil(@context.last_value)
      assert_nil(@context.evaluate('_', 1))
      obj = Object.new
      @context.set_last_value(obj)
      assert_same(obj, @context.last_value)
      assert_same(obj, @context.evaluate('_', 1))
    end

    def test_evaluate_with_exception
      assert_nil(@context.evaluate("$!", 1))
      e = assert_raise_with_message(RuntimeError, 'foo') {
        @context.evaluate("raise 'foo'", 1)
      }
      assert_equal('foo', e.message)
      assert_same(e, @context.evaluate('$!', 1, exception: e))
      e = assert_raise(SyntaxError) {
        @context.evaluate("1,2,3", 1, exception: e)
      }
      assert_match(/\A\(irb\):1:/, e.message)
      assert_not_match(/rescue _\.class/, e.message)
    end

    def test_evaluate_with_encoding_error_without_lineno
      assert_raise_with_message(EncodingError, /invalid symbol/) {
        @context.evaluate(%q[{"\xAE": 1}], 1)
        # The backtrace of this invalid encoding hash doesn't contain lineno.
      }
    end

    def test_evaluate_with_onigmo_warning
      assert_warning("(irb):1: warning: character class has duplicated range: /[aa]/\n") do
        @context.evaluate('/[aa]/', 1)
      end
    end

    def test_eval_input
      verbose, $VERBOSE = $VERBOSE, nil
      input = TestInputMethod.new([
        "raise 'Foo'\n",
        "_\n",
        "0\n",
        "_\n",
      ])
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
      out, err = capture_output do
        irb.eval_input
      end
      assert_empty err
      assert_pattern_list([:*, /RuntimeError \(.*Foo.*\).*\n/,
                           :*, /#<RuntimeError: Foo>\n/,
                           :*, /0$/,
                           :*, /0$/,
                           /\s*/], out)
    ensure
      $VERBOSE = verbose
    end

    def test_eval_object_without_inspect_method
      verbose, $VERBOSE = $VERBOSE, nil
      input = TestInputMethod.new([
        "BasicObject.new\n",
      ])
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
      out, err = capture_output do
        irb.eval_input
      end
      assert_empty err
      assert(/\(Object doesn't support #inspect\)\n(=> )?\n/, out)
    ensure
      $VERBOSE = verbose
    end

    def test_default_config
      assert_equal(true, @context.use_colorize?)
    end

    def test_assignment_expression
      input = TestInputMethod.new
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
      [
        "foo = bar",
        "@foo = bar",
        "$foo = bar",
        "@@foo = bar",
        "::Foo = bar",
        "a::Foo = bar",
        "Foo = bar",
        "foo.bar = 1",
        "foo[1] = bar",
        "foo += bar",
        "foo -= bar",
        "foo ||= bar",
        "foo &&= bar",
        "foo, bar = 1, 2",
        "foo.bar=(1)",
        "foo; foo = bar",
        "foo; foo = bar; ;\n ;",
        "foo\nfoo = bar",
      ].each do |exp|
        assert(
          irb.assignment_expression?(exp),
          "#{exp.inspect}: should be an assignment expression"
        )
      end

      [
        "foo",
        "foo.bar",
        "foo[0]",
        "foo = bar; foo",
        "foo = bar\nfoo",
      ].each do |exp|
        refute(
          irb.assignment_expression?(exp),
          "#{exp.inspect}: should not be an assignment expression"
        )
      end
    end

    def test_echo_on_assignment
      input = TestInputMethod.new([
        "a = 1\n",
        "a\n",
        "a, b = 2, 3\n",
        "a\n",
        "b\n",
        "b = 4\n",
        "_\n"
      ])
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
      irb.context.return_format = "=> %s\n"

      # The default
      irb.context.echo = true
      irb.context.echo_on_assignment = false
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> 1\n=> 2\n=> 3\n=> 4\n", out)

      # Everything is output, like before echo_on_assignment was introduced
      input.reset
      irb.context.echo = true
      irb.context.echo_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> 1\n=> 1\n=> [2, 3]\n=> 2\n=> 3\n=> 4\n=> 4\n", out)

      # Nothing is output when echo is false
      input.reset
      irb.context.echo = false
      irb.context.echo_on_assignment = false
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("", out)

      # Nothing is output when echo is false even if echo_on_assignment is true
      input.reset
      irb.context.echo = false
      irb.context.echo_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("", out)
    end

    def test_omit_on_assignment
      input = TestInputMethod.new([
        "a = [1] * 100\n",
        "a\n",
      ])
      value = [1] * 100
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
      irb.context.return_format = "=> %s\n"

      irb.context.echo = true
      irb.context.echo_on_assignment = false
      irb.context.omit_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> #{value.inspect}\n", out)

      input.reset
      irb.context.echo = true
      irb.context.echo_on_assignment = true
      irb.context.omit_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> #{value.inspect[0..(input.winsize.last - 9)]}...\e[0m\n=> #{value.inspect}\n", out)

      input.reset
      irb.context.echo = true
      irb.context.echo_on_assignment = true
      irb.context.omit_on_assignment = false
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> #{value.inspect}\n=> #{value.inspect}\n", out)

      input.reset
      irb.context.echo = false
      irb.context.echo_on_assignment = false
      irb.context.omit_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("", out)

      input.reset
      irb.context.echo = false
      irb.context.echo_on_assignment = true
      irb.context.omit_on_assignment = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("", out)

      input.reset
      irb.context.echo = false
      irb.context.echo_on_assignment = true
      irb.context.omit_on_assignment = false
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("", out)
    end

    def test_echo_on_assignment_conf
      # Default
      IRB.conf[:ECHO] = nil
      IRB.conf[:ECHO_ON_ASSIGNMENT] = nil
      input = TestInputMethod.new()
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)

      assert(irb.context.echo?, "echo? should be true by default")
      assert(irb.context.echo_on_assignment?, "echo_on_assignment? should be true by default")
      assert(irb.context.omit_on_assignment?, "omit_on_assignment? should be true by default")

      # Explicitly set :ECHO to false
      IRB.conf[:ECHO] = false
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)

      refute(irb.context.echo?, "echo? should be false when IRB.conf[:ECHO] is set to false")
      assert(irb.context.echo_on_assignment?, "echo_on_assignment? should be true by default")
      assert(irb.context.omit_on_assignment?, "omit_on_assignment? should be true by default")

      # Explicitly set :ECHO_ON_ASSIGNMENT to true
      IRB.conf[:ECHO] = nil
      IRB.conf[:ECHO_ON_ASSIGNMENT] = false
      IRB.conf[:OMIT_ON_ASSIGNMENT] = false
      irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)

      assert(irb.context.echo?, "echo? should be true by default")
      refute(irb.context.echo_on_assignment?, "echo_on_assignment? should be false when IRB.conf[:ECHO_ON_ASSIGNMENT] is set to false")
      refute(irb.context.omit_on_assignment?, "omit_on_assignment? should be false when IRB.conf[:OMIT_ON_ASSIGNMENT] is set to false")
    end

    def test_multiline_output_on_default_inspector
      main = Object.new
      def main.inspect
        "abc\ndef"
      end
      input = TestInputMethod.new([
        "self"
      ])
      irb = IRB::Irb.new(IRB::WorkSpace.new(main), input)
      irb.context.return_format = "=> %s\n"

      # The default
      irb.context.newline_before_multiline_output = true
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> \nabc\ndef\n",
                   out)

      # No newline before multiline output
      input.reset
      irb.context.newline_before_multiline_output = false
      out, err = capture_io do
        irb.eval_input
      end
      assert_empty err
      assert_equal("=> abc\ndef\n",
                   out)
    end
  end
end