summaryrefslogtreecommitdiff
path: root/test/psych/test_parser.rb
blob: e8225dabb6568ec772d627a42df242cd79f0d962 (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
# coding: utf-8
# frozen_string_literal: true

require_relative 'helper'

module Psych
  class TestParser < TestCase
    class EventCatcher < Handler
      attr_accessor :parser
      attr_reader :calls, :marks
      def initialize
        @parser = nil
        @calls  = []
        @marks  = []
      end

      (Handler.instance_methods(true) -
       Object.instance_methods).each do |m|
        class_eval %{
          def #{m} *args
            super
            @marks << @parser.mark if @parser
            @calls << [:#{m}, args]
          end
        }
      end
    end

    def setup
      super
      @handler        = EventCatcher.new
      @parser         = Psych::Parser.new @handler
      @handler.parser = @parser
    end

    def test_ast_roundtrip
      parser = Psych.parser
      parser.parse('null')
      ast = parser.handler.root
      assert_match(/^null/, ast.yaml)
    end

    def test_exception_memory_leak
      yaml = <<-eoyaml
%YAML 1.1
%TAG ! tag:tenderlovemaking.com,2009:
--- &ponies
- first element
- *ponies
- foo: bar
...
      eoyaml

      [:start_stream, :start_document, :end_document, :alias, :scalar,
       :start_sequence, :end_sequence, :start_mapping, :end_mapping,
       :end_stream].each do |method|

        klass = Class.new(Psych::Handler) do
          define_method(method) do |*args|
            raise
          end
        end

        parser = Psych::Parser.new klass.new
        2.times {
          assert_raises(RuntimeError, method.to_s) do
            parser.parse yaml
          end
        }
      end
    end

    def test_multiparse
      3.times do
        @parser.parse '--- foo'
      end
    end

    def test_filename
      ex = assert_raises(Psych::SyntaxError) do
        @parser.parse '--- `', 'omg!'
      end
      assert_match 'omg!', ex.message
    end

    def test_line_numbers
      assert_equal 0, @parser.mark.line
      @parser.parse "---\n- hello\n- world"
      line_calls = @handler.marks.map(&:line).zip(@handler.calls.map(&:first))
      assert_equal [
                    [0, :event_location],
                    [0, :start_stream],
                    [0, :event_location],
                    [0, :start_document],
                    [1, :event_location],
                    [1, :start_sequence],
                    [2, :event_location],
                    [2, :scalar],
                    [3, :event_location],
                    [3, :scalar],
                    [3, :event_location],
                    [3, :end_sequence],
                    [3, :event_location],
                    [3, :end_document],
                    [3, :event_location],
                    [3, :end_stream]], line_calls

      assert_equal 3, @parser.mark.line
    end

    def test_column_numbers
      assert_equal 0, @parser.mark.column
      @parser.parse "---\n- hello\n- world"
      col_calls = @handler.marks.map(&:column).zip(@handler.calls.map(&:first))
      assert_equal [
                    [0, :event_location],
                    [0, :start_stream],
                    [3, :event_location],
                    [3, :start_document],
                    [1, :event_location],
                    [1, :start_sequence],
                    [0, :event_location],
                    [0, :scalar],
                    [0, :event_location],
                    [0, :scalar],
                    [0, :event_location],
                    [0, :end_sequence],
                    [0, :event_location],
                    [0, :end_document],
                    [0, :event_location],
                    [0, :end_stream]], col_calls

      assert_equal 0, @parser.mark.column
    end

    def test_index_numbers
      assert_equal 0, @parser.mark.index
      @parser.parse "---\n- hello\n- world"
      idx_calls = @handler.marks.map(&:index).zip(@handler.calls.map(&:first))
      assert_equal [
                    [0, :event_location],
                    [0, :start_stream],
                    [3, :event_location],
                    [3, :start_document],
                    [5, :event_location],
                    [5, :start_sequence],
                    [12, :event_location],
                    [12, :scalar],
                    [19, :event_location],
                    [19, :scalar],
                    [19, :event_location],
                    [19, :end_sequence],
                    [19, :event_location],
                    [19, :end_document],
                    [19, :event_location],
                    [19, :end_stream]], idx_calls

      assert_equal 19, @parser.mark.index
    end

    def test_bom
      tadpole = 'おたまじゃくし'

      # BOM + text
      yml = "\uFEFF#{tadpole}".encode('UTF-16LE')
      @parser.parse yml
      assert_equal tadpole, @parser.handler.calls.find { |method, args| method == :scalar }[1].first
    end

    def test_external_encoding
      tadpole = 'おたまじゃくし'

      @parser.external_encoding = Psych::Parser::UTF16LE
      @parser.parse tadpole.encode 'UTF-16LE'
      assert_equal tadpole, @parser.handler.calls.find { |method, args| method == :scalar }[1].first
    end

    def test_bogus_io
      o = Object.new
      def o.external_encoding; nil end
      def o.read len; self end

      assert_raises(TypeError) do
        @parser.parse o
      end
    end

    def test_parse_io
      @parser.parse StringIO.new("--- a")
      assert_called :start_stream
      assert_called :scalar
      assert_called :end_stream
    end

    def test_syntax_error
      assert_raises(Psych::SyntaxError) do
        @parser.parse("---\n\"foo\"\n\"bar\"\n")
      end
    end

    def test_syntax_error_twice
      assert_raises(Psych::SyntaxError) do
        @parser.parse("---\n\"foo\"\n\"bar\"\n")
      end

      assert_raises(Psych::SyntaxError) do
        @parser.parse("---\n\"foo\"\n\"bar\"\n")
      end
    end

    def test_syntax_error_has_path_for_string
      e = assert_raises(Psych::SyntaxError) do
        @parser.parse("---\n\"foo\"\n\"bar\"\n")
      end
      assert_match '(<unknown>):', e.message
    end

    def test_syntax_error_has_path_for_io
      io = StringIO.new "---\n\"foo\"\n\"bar\"\n"
      def io.path; "hello!"; end

      e = assert_raises(Psych::SyntaxError) do
        @parser.parse(io)
      end
      assert_match "(#{io.path}):", e.message
    end

    def test_mapping_end
      @parser.parse("---\n!!map { key: value }")
      assert_called :end_mapping
    end

    def test_mapping_tag
      @parser.parse("---\n!!map { key: value }")
      assert_called :start_mapping, ["tag:yaml.org,2002:map", false, Nodes::Mapping::FLOW]
    end

    def test_mapping_anchor
      @parser.parse("---\n&A { key: value }")
      assert_called :start_mapping, ['A', true, Nodes::Mapping::FLOW]
    end

    def test_mapping_block
      @parser.parse("---\n  key: value")
      assert_called :start_mapping, [true, Nodes::Mapping::BLOCK]
    end

    def test_mapping_start
      @parser.parse("---\n{ key: value }")
      assert_called :start_mapping
      assert_called :start_mapping, [true, Nodes::Mapping::FLOW]
    end

    def test_sequence_end
      @parser.parse("---\n&A [1, 2]")
      assert_called :end_sequence
    end

    def test_sequence_start_anchor
      @parser.parse("---\n&A [1, 2]")
      assert_called :start_sequence, ["A", true, Nodes::Sequence::FLOW]
    end

    def test_sequence_start_tag
      @parser.parse("---\n!!seq [1, 2]")
      assert_called :start_sequence, ["tag:yaml.org,2002:seq", false, Nodes::Sequence::FLOW]
    end

    def test_sequence_start_flow
      @parser.parse("---\n[1, 2]")
      assert_called :start_sequence, [true, Nodes::Sequence::FLOW]
    end

    def test_sequence_start_block
      @parser.parse("---\n  - 1\n  - 2")
      assert_called :start_sequence, [true, Nodes::Sequence::BLOCK]
    end

    def test_literal_scalar
      @parser.parse(<<-eoyml)
%YAML 1.1
---
"literal\n\
        \ttext\n"
      eoyml
      assert_called :scalar, ['literal text ', false, true, Nodes::Scalar::DOUBLE_QUOTED]
    end

    def test_scalar
      @parser.parse("--- foo\n")
      assert_called :scalar, ['foo', true, false, Nodes::Scalar::PLAIN]
    end

    def test_scalar_with_tag
      @parser.parse("---\n!!str foo\n")
      assert_called :scalar, ['foo', 'tag:yaml.org,2002:str', false, false, Nodes::Scalar::PLAIN]
    end

    def test_scalar_with_anchor
      @parser.parse("---\n&A foo\n")
      assert_called :scalar, ['foo', 'A', true, false, Nodes::Scalar::PLAIN]
    end

    def test_scalar_plain_implicit
      @parser.parse("---\n&A foo\n")
      assert_called :scalar, ['foo', 'A', true, false, Nodes::Scalar::PLAIN]
    end

    def test_alias
      @parser.parse(<<-eoyml)
%YAML 1.1
---
!!seq [
  !!str "Without properties",
  &A !!str "Anchored",
  !!str "Tagged",
  *A,
  !!str "",
]
      eoyml
      assert_called :alias, ['A']
    end

    def test_end_stream
      @parser.parse("--- foo\n")
      assert_called :end_stream
    end

    def test_start_stream
      @parser.parse("--- foo\n")
      assert_called :start_stream
    end

    def test_end_document_implicit
      @parser.parse("\"foo\"\n")
      assert_called :end_document, [true]
    end

    def test_end_document_explicit
      @parser.parse("\"foo\"\n...")
      assert_called :end_document, [false]
    end

    def test_start_document_version
      @parser.parse("%YAML 1.1\n---\n\"foo\"\n")
      assert_called :start_document, [[1,1], [], false]
    end

    def test_start_document_tag
      @parser.parse("%TAG !yaml! tag:yaml.org,2002\n---\n!yaml!str \"foo\"\n")
      assert_called :start_document, [[], [['!yaml!', 'tag:yaml.org,2002']], false]
    end

    def test_event_location
      @parser.parse "foo:\n" \
                    "  barbaz: [1, 2]"

      events = @handler.calls.each_slice(2).map do |location, event|
        [event[0], location[1]]
      end

      assert_equal [
                     [:start_stream, [0, 0, 0, 0]],
                     [:start_document, [0, 0, 0, 0]],
                     [:start_mapping, [0, 0, 0, 0]],
                     [:scalar, [0, 0, 0, 3]],
                     [:start_mapping, [1, 2, 1, 2]],
                     [:scalar, [1, 2, 1, 8]],
                     [:start_sequence, [1, 10, 1, 11]],
                     [:scalar, [1, 11, 1, 12]],
                     [:scalar, [1, 14, 1, 15]],
                     [:end_sequence, [1, 15, 1, 16]],
                     [:end_mapping, [2, 0, 2, 0]],
                     [:end_mapping, [2, 0, 2, 0]],
                     [:end_document, [2, 0, 2, 0]],
                     [:end_stream, [2, 0, 2, 0]]], events
    end

    def assert_called call, with = nil, parser = @parser
      if with
        call = parser.handler.calls.find { |x|
          x.first == call && x.last.compact == with
        }
        assert(call,
          "#{[call,with].inspect} not in #{parser.handler.calls.inspect}"
        )
      else
        assert parser.handler.calls.any? { |x| x.first == call }
      end
    end
  end
end