aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/deprecation_test.rb
blob: 332100f5a126beb83ec9c3f579fab090f5495338 (plain) (blame)
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
require 'abstract_unit'

class Deprecatee
  def initialize
    @request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request)
    @_request = 'there we go'
  end
  def request; @_request end
  def old_request; @request end

  def partially(foo = nil)
    ActiveSupport::Deprecation.warn('calling with foo=nil is out') if foo.nil?
  end

  def not() 2 end
  def none() 1 end
  def one(a) a end
  def multi(a,b,c) [a,b,c] end
  deprecate :none, :one, :multi

  def a; end
  def b; end
  def c; end
  def d; end
  def e; end
  deprecate :a, :b, :c => :e, :d => "you now need to do something extra for this one"

  def f=(v); end
  deprecate :f=

  module B
    C = 1
  end
  A = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('Deprecatee::A', 'Deprecatee::B::C')
end


class DeprecationTest < ActiveSupport::TestCase
  def setup
    # Track the last warning.
    @old_behavior = ActiveSupport::Deprecation.behavior
    @last_message = nil
    ActiveSupport::Deprecation.behavior = Proc.new { |message| @last_message = message }

    @dtc = Deprecatee.new
  end

  def teardown
    ActiveSupport::Deprecation.behavior = @old_behavior
  end

  def test_inline_deprecation_warning
    assert_deprecated(/foo=nil/) do
      @dtc.partially
    end
  end

  def test_undeprecated
    assert_not_deprecated do
      assert_equal 2, @dtc.not
    end
  end

  def test_deprecate_class_method
    assert_deprecated(/none is deprecated/) do
      assert_equal 1, @dtc.none
    end

    assert_deprecated(/one is deprecated/) do
      assert_equal 1, @dtc.one(1)
    end

    assert_deprecated(/multi is deprecated/) do
      assert_equal [1,2,3], @dtc.multi(1,2,3)
    end
  end

  def test_nil_behavior_is_ignored
    ActiveSupport::Deprecation.behavior = nil
    assert_deprecated(/foo=nil/) { @dtc.partially }
  end

  def test_several_behaviors
    @a, @b = nil, nil

    ActiveSupport::Deprecation.behavior = [
      Proc.new { |msg, callstack| @a = msg },
      Proc.new { |msg, callstack| @b = msg }
    ]

    @dtc.partially
    assert_match(/foo=nil/, @a)
    assert_match(/foo=nil/, @b)
  end

  def test_default_stderr_behavior
    ActiveSupport::Deprecation.behavior = :stderr
    behavior = ActiveSupport::Deprecation.behavior.first

    content = capture(:stderr) {
      assert_nil behavior.call('Some error!', ['call stack!'])
    }
    assert_match(/Some error!/, content)
    assert_match(/call stack!/, content)
  end

  def test_default_stderr_behavior_with_warn_method
    ActiveSupport::Deprecation.behavior = :stderr

    content = capture(:stderr) {
      ActiveSupport::Deprecation.warn('Instance error!', ['instance call stack!'])
    }

    assert_match(/Instance error!/, content)
    assert_match(/instance call stack!/, content)
  end

  def test_default_silence_behavior
    ActiveSupport::Deprecation.behavior = :silence
    behavior = ActiveSupport::Deprecation.behavior.first

    assert_blank capture(:stderr) {
      assert_nil behavior.call('Some error!', ['call stack!'])
    }
  end

  def test_deprecated_instance_variable_proxy
    assert_not_deprecated { @dtc.request.size }

    assert_deprecated('@request.size') { assert_equal @dtc.request.size, @dtc.old_request.size }
    assert_deprecated('@request.to_s') { assert_equal @dtc.request.to_s, @dtc.old_request.to_s }
  end

  def test_deprecated_instance_variable_proxy_shouldnt_warn_on_inspect
    assert_not_deprecated { assert_equal @dtc.request.inspect, @dtc.old_request.inspect }
  end

  def test_deprecated_constant_proxy
    assert_not_deprecated { Deprecatee::B::C }
    assert_deprecated('Deprecatee::A') { assert_equal Deprecatee::B::C, Deprecatee::A }
  end

  def test_assert_deprecation_without_match
    assert_deprecated do
      @dtc.partially
    end
  end

  def test_assert_deprecated_matches_any_warning
    assert_deprecated 'abc' do
      ActiveSupport::Deprecation.warn 'abc'
      ActiveSupport::Deprecation.warn 'def'
    end
  rescue MiniTest::Assertion
    flunk 'assert_deprecated should match any warning in block, not just the last one'
  end

  def test_assert_not_deprecated_returns_result_of_block
    assert_equal 123, assert_not_deprecated { 123 }
  end

  def test_assert_deprecated_returns_result_of_block
    result = assert_deprecated('abc') do
      ActiveSupport::Deprecation.warn 'abc'
      123
    end
    assert_equal 123, result
  end

  def test_assert_deprecated_warn_work_with_default_behavior
    ActiveSupport::Deprecation.instance_variable_set('@behavior' , nil)
    assert_deprecated('abc') do
      ActiveSupport::Deprecation.warn 'abc'
    end
  end

  def test_silence
    ActiveSupport::Deprecation.silence do
      assert_not_deprecated { @dtc.partially }
    end

    ActiveSupport::Deprecation.silenced = true
    assert_not_deprecated { @dtc.partially }
    ActiveSupport::Deprecation.silenced = false
  end

  def test_deprecation_without_explanation
    assert_deprecated { @dtc.a }
    assert_deprecated { @dtc.b }
    assert_deprecated { @dtc.f = :foo }
  end

  def test_deprecation_with_alternate_method
    assert_deprecated(/use e instead/) { @dtc.c }
  end

  def test_deprecation_with_explicit_message
    assert_deprecated(/you now need to do something extra for this one/) { @dtc.d }
  end

  def test_deprecation_in_other_object
    messages = []

    klass = Class.new do
      delegate :warn, :behavior=, to: ActiveSupport::Deprecation
    end

    o = klass.new
    o.behavior = Proc.new { |message, callstack| messages << message }
    assert_difference("messages.size") do
      o.warn("warning")
    end
  end

  def test_deprecated_method_with_custom_method_warning
    deprecator = deprecator_with_messages

    class << deprecator
      private
        def deprecated_method_warning(method, message)
          "deprecator.deprecated_method_warning.#{method}"
        end
    end

    deprecatee = Class.new do
      def method
      end
      deprecate :method, deprecator: deprecator
    end

    deprecatee.new.method
    assert deprecator.messages.first.match("DEPRECATION WARNING: deprecator.deprecated_method_warning.method")
  end

  def test_deprecate_with_custom_deprecator
    custom_deprecator = mock('Deprecator') do
      expects(:deprecation_warning)
    end

    klass = Class.new do
      def method
      end
      deprecate :method, deprecator: custom_deprecator
    end

    klass.new.method
  end

  def test_deprecated_constant_with_deprecator_given
    deprecator = deprecator_with_messages
    klass = Class.new
    klass.const_set(:OLD, ActiveSupport::Deprecation::DeprecatedConstantProxy.new('klass::OLD', 'Object', deprecator) )
    assert_difference("deprecator.messages.size") do
      klass::OLD.to_s
    end
  end
  
  def test_deprecated_instance_variable_with_instance_deprecator
    deprecator = deprecator_with_messages
    
    klass = Class.new() do
      def initialize(deprecator)
        @request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
        @_request = :a_request
      end
      def request; @_request end
      def old_request; @request end
    end

    assert_difference("deprecator.messages.size") { klass.new(deprecator).old_request.to_s }
  end

  def test_deprecated_instance_variable_with_given_deprecator
    deprecator = deprecator_with_messages

    klass = Class.new do
      define_method(:initialize) do
        @request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
        @_request = :a_request
      end
      def request; @_request end
      def old_request; @request end
    end

    assert_difference("deprecator.messages.size") { klass.new.old_request.to_s }
  end

  def test_delegate_deprecator_instance
    klass = Class.new do
      attr_reader :last_message
      delegate :warn, :behavior=, to: ActiveSupport::Deprecation

      def initialize
        self.behavior = [Proc.new { |message| @last_message = message }]
      end

      def deprecated_method
        warn(deprecated_method_warning(:deprecated_method, "You are calling deprecated method"))
      end

      private
        def deprecated_method_warning(method_name, message = nil)
          message || "#{method_name} is deprecated and will be removed from This Library"
        end
    end

    object = klass.new
    object.deprecated_method
    assert_match(/You are calling deprecated method/, object.last_message)
  end

  def test_default_gem_name
    deprecator = ActiveSupport::Deprecation.new

    deprecator.send(:deprecated_method_warning, :deprecated_method, "You are calling deprecated method").tap do |message|
      assert_match(/is deprecated and will be removed from Rails/, message)
    end
  end

  def test_custom_gem_name
    deprecator = ActiveSupport::Deprecation.new('2.0', 'Custom')

    deprecator.send(:deprecated_method_warning, :deprecated_method, "You are calling deprecated method").tap do |message|
      assert_match(/is deprecated and will be removed from Custom/, message)
    end
  end

  private
    def deprecator_with_messages
      klass = Class.new(ActiveSupport::Deprecation)
      deprecator = klass.new
      deprecator.behavior = Proc.new{|message, callstack| deprecator.messages << message}
      def deprecator.messages
        @messages ||= []
      end
      deprecator
    end
end