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
|
# -*- coding: us-ascii -*-
# frozen_string_literal: false
require 'test/unit'
require 'timeout'
class TestData < Test::Unit::TestCase
def test_define
klass = Data.define(:foo, :bar)
assert_kind_of(Class, klass)
assert_equal(%i[foo bar], klass.members)
assert_raise(NoMethodError) { Data.new(:foo) }
assert_raise(TypeError) { Data.define(0) }
# Because some code is shared with Struct, check we don't share unnecessary functionality
assert_raise(TypeError) { Data.define(:foo, keyword_init: true) }
assert_not_respond_to(Data.define, :define, "Cannot define from defined Data class")
end
def test_define_edge_cases
# non-ascii
klass = Data.define(:"r\u{e9}sum\u{e9}")
o = klass.new(1)
assert_equal(1, o.send(:"r\u{e9}sum\u{e9}"))
# junk string
klass = Data.define(:"a\000")
o = klass.new(1)
assert_equal(1, o.send(:"a\000"))
# special characters in attribute names
klass = Data.define(:a, :b?)
x = Object.new
o = klass.new("test", x)
assert_same(x, o.b?)
klass = Data.define(:a, :b!)
x = Object.new
o = klass.new("test", x)
assert_same(x, o.b!)
assert_raise(ArgumentError) { Data.define(:x=) }
assert_raise(ArgumentError, /duplicate member/) { Data.define(:x, :x) }
end
def test_define_with_block
klass = Data.define(:a, :b) do
def c
a + b
end
end
assert_equal(3, klass.new(1, 2).c)
end
def test_initialize
klass = Data.define(:foo, :bar)
# Regular
test = klass.new(1, 2)
assert_equal(1, test.foo)
assert_equal(2, test.bar)
assert_equal(test, klass.new(1, 2))
assert_predicate(test, :frozen?)
# Keywords
test_kw = klass.new(foo: 1, bar: 2)
assert_equal(1, test_kw.foo)
assert_equal(2, test_kw.bar)
assert_equal(test_kw, klass.new(foo: 1, bar: 2))
assert_equal(test_kw, test)
# Wrong protocol
assert_raise(ArgumentError) { klass.new(1) }
assert_raise(ArgumentError) { klass.new(1, 2, 3) }
assert_raise(ArgumentError) { klass.new(foo: 1) }
assert_raise(ArgumentError) { klass.new(foo: 1, bar: 2, baz: 3) }
# Could be converted to foo: 1, bar: 2, but too smart is confusing
assert_raise(ArgumentError) { klass.new(1, bar: 2) }
end
def test_initialize_redefine
klass = Data.define(:foo, :bar) do
attr_reader :passed
def initialize(*args, **kwargs)
@passed = [args, kwargs]
super(foo: 1, bar: 2) # so we can experiment with passing wrong numbers of args
end
end
assert_equal([[], {foo: 1, bar: 2}], klass.new(foo: 1, bar: 2).passed)
# Positional arguments are converted to keyword ones
assert_equal([[], {foo: 1, bar: 2}], klass.new(1, 2).passed)
# Missing arguments can be fixed in initialize
assert_equal([[], {foo: 1}], klass.new(foo: 1).passed)
assert_equal([[], {foo: 42}], klass.new(42).passed)
# Extra keyword arguments can be dropped in initialize
assert_equal([[], {foo: 1, bar: 2, baz: 3}], klass.new(foo: 1, bar: 2, baz: 3).passed)
end
def test_instance_behavior
klass = Data.define(:foo, :bar)
test = klass.new(1, 2)
assert_equal(1, test.foo)
assert_equal(2, test.bar)
assert_equal(%i[foo bar], test.members)
assert_equal(1, test.public_send(:foo))
assert_equal(0, test.method(:foo).arity)
assert_equal([], test.method(:foo).parameters)
assert_equal({foo: 1, bar: 2}, test.to_h)
assert_equal({"foo"=>"1", "bar"=>"2"}, test.to_h { [_1.to_s, _2.to_s] })
assert_equal([1, 2], test.deconstruct)
assert_equal({foo: 1, bar: 2}, test.deconstruct_keys(nil))
assert_equal({foo: 1}, test.deconstruct_keys(%i[foo]))
assert_equal({foo: 1}, test.deconstruct_keys(%i[foo baz]))
assert_equal({}, test.deconstruct_keys(%i[foo bar baz]))
assert_raise(TypeError) { test.deconstruct_keys(0) }
assert_kind_of(Integer, test.hash)
end
def test_hash
measure = Data.define(:amount, :unit)
assert_equal(measure[1, 'km'].hash, measure[1, 'km'].hash)
assert_not_equal(measure[1, 'km'].hash, measure[10, 'km'].hash)
assert_not_equal(measure[1, 'km'].hash, measure[1, 'm'].hash)
assert_not_equal(measure[1, 'km'].hash, measure[1.0, 'km'].hash)
# Structurally similar data class, but shouldn't be considered
# the same hash key
measurement = Data.define(:amount, :unit)
assert_not_equal(measure[1, 'km'].hash, measurement[1, 'km'].hash)
end
def test_inspect
klass = Data.define(:a)
o = klass.new(1)
assert_equal("#<data a=1>", o.inspect)
Object.const_set(:Foo, klass)
assert_equal("#<data Foo a=1>", o.inspect)
Object.instance_eval { remove_const(:Foo) }
klass = Data.define(:@a)
o = klass.new(1)
assert_equal("#<data :@a=1>", o.inspect)
end
def test_equal
klass1 = Data.define(:a)
klass2 = Data.define(:a)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert_equal(o1, o2)
assert_not_equal(o1, o3)
end
def test_eql
klass1 = Data.define(:a)
klass2 = Data.define(:a)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert_operator(o1, :eql?, o2)
assert_not_operator(o1, :eql?, o3)
end
def test_with
klass = Data.define(:foo, :bar)
source = klass.new(foo: 1, bar: 2)
# Simple
test = source.with
assert_equal(source.object_id, test.object_id)
# Changes
test = source.with(foo: 10)
assert_equal(1, source.foo)
assert_equal(2, source.bar)
assert_equal(source, klass.new(foo: 1, bar: 2))
assert_equal(10, test.foo)
assert_equal(2, test.bar)
assert_equal(test, klass.new(foo: 10, bar: 2))
test = source.with(foo: 10, bar: 20)
assert_equal(1, source.foo)
assert_equal(2, source.bar)
assert_equal(source, klass.new(foo: 1, bar: 2))
assert_equal(10, test.foo)
assert_equal(20, test.bar)
assert_equal(test, klass.new(foo: 10, bar: 20))
# Keyword splat
changes = { foo: 10, bar: 20 }
test = source.with(**changes)
assert_equal(1, source.foo)
assert_equal(2, source.bar)
assert_equal(source, klass.new(foo: 1, bar: 2))
assert_equal(10, test.foo)
assert_equal(20, test.bar)
assert_equal(test, klass.new(foo: 10, bar: 20))
# Wrong protocol
assert_raise_with_message(ArgumentError, "wrong number of arguments (given 1, expected 0)") do
source.with(10)
end
assert_raise_with_message(ArgumentError, "unknown keywords: :baz, :quux") do
source.with(foo: 1, bar: 2, baz: 3, quux: 4)
end
assert_raise_with_message(ArgumentError, "wrong number of arguments (given 1, expected 0)") do
source.with(1, bar: 2)
end
assert_raise_with_message(ArgumentError, "wrong number of arguments (given 2, expected 0)") do
source.with(1, 2)
end
assert_raise_with_message(ArgumentError, "wrong number of arguments (given 1, expected 0)") do
source.with({ bar: 2 })
end
end
def test_with_initialize
oddclass = Data.define(:odd) do
def initialize(odd:)
raise ArgumentError, "Not odd" unless odd.odd?
super(odd: odd)
end
end
assert_raise_with_message(ArgumentError, "Not odd") {
oddclass.new(odd: 0)
}
odd = oddclass.new(odd: 1)
assert_raise_with_message(ArgumentError, "Not odd") {
odd.with(odd: 2)
}
end
def test_memberless
klass = Data.define
test = klass.new
assert_equal(klass.new, test)
assert_not_equal(Data.define.new, test)
assert_equal('#<data >', test.inspect)
assert_equal([], test.members)
assert_equal({}, test.to_h)
end
def test_dup
klass = Data.define(:foo, :bar)
test = klass.new(foo: 1, bar: 2)
assert_equal(klass.new(foo: 1, bar: 2), test.dup)
assert_predicate(test.dup, :frozen?)
end
Klass = Data.define(:foo, :bar)
def test_marshal
test = Klass.new(foo: 1, bar: 2)
loaded = Marshal.load(Marshal.dump(test))
assert_equal(test, loaded)
assert_not_same(test, loaded)
assert_predicate(loaded, :frozen?)
end
def test_frozen_subclass
test = Class.new(Data.define(:a)).freeze.new(a: 0)
assert_kind_of(Data, test)
assert_equal([:a], test.members)
end
end
|
