blob: 7579bfe1b6f68b96bf0a7c4b7009b41180f34960 (
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
|
require_relative '../../spec_helper'
require_relative 'fixtures/common'
describe "Proc.new with an associated block" do
it "returns a proc that represents the block" do
Proc.new { }.call.should == nil
Proc.new { "hello" }.call.should == "hello"
end
describe "called on a subclass of Proc" do
before :each do
@subclass = Class.new(Proc) do
attr_reader :ok
def initialize
@ok = true
super
end
end
end
it "returns an instance of the subclass" do
proc = @subclass.new {"hello"}
proc.class.should == @subclass
proc.call.should == "hello"
proc.ok.should == true
end
# JRUBY-5026
describe "using a reified block parameter" do
it "returns an instance of the subclass" do
cls = Class.new do
def self.subclass=(subclass)
@subclass = subclass
end
def self.foo(&block)
@subclass.new(&block)
end
end
cls.subclass = @subclass
proc = cls.foo {"hello"}
proc.class.should == @subclass
proc.call.should == "hello"
proc.ok.should == true
end
end
end
# JRUBY-5261; Proc sets up the block during .new, not in #initialize
describe "called on a subclass of Proc that does not 'super' in 'initialize'" do
before :each do
@subclass = Class.new(Proc) do
attr_reader :ok
def initialize
@ok = true
end
end
end
it "still constructs a functional proc" do
proc = @subclass.new {'ok'}
proc.call.should == 'ok'
proc.ok.should == true
end
end
it "raises a LocalJumpError when context of the block no longer exists" do
def some_method
Proc.new { return }
end
res = some_method()
lambda { res.call }.should raise_error(LocalJumpError)
end
it "returns from within enclosing method when 'return' is used in the block" do
# we essentially verify that the created instance behaves like proc,
# not like lambda.
def some_method
Proc.new { return :proc_return_value }.call
:method_return_value
end
some_method.should == :proc_return_value
end
it "returns a subclass of Proc" do
obj = ProcSpecs::MyProc.new { }
obj.should be_kind_of(ProcSpecs::MyProc)
end
it "calls initialize on the Proc object" do
obj = ProcSpecs::MyProc2.new(:a, 2) { }
obj.first.should == :a
obj.second.should == 2
end
ruby_version_is ""..."2.7" do
it "returns a new Proc instance from the block passed to the containing method" do
prc = ProcSpecs.new_proc_in_method { "hello" }
prc.should be_an_instance_of(Proc)
prc.call.should == "hello"
end
it "returns a new Proc instance from the block passed to the containing method" do
prc = ProcSpecs.new_proc_subclass_in_method { "hello" }
prc.should be_an_instance_of(ProcSpecs::ProcSubclass)
prc.call.should == "hello"
end
end
end
describe "Proc.new with a block argument" do
it "returns the passed proc created from a block" do
passed_prc = Proc.new { "hello".size }
prc = Proc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call.should == 5
end
it "returns the passed proc created from a method" do
method = "hello".method(:size)
passed_prc = Proc.new(&method)
prc = Proc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call.should == 5
end
it "returns the passed proc created from a symbol" do
passed_prc = Proc.new(&:size)
prc = Proc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call("hello").should == 5
end
end
describe "Proc.new with a block argument called indirectly from a subclass" do
it "returns the passed proc created from a block" do
passed_prc = ProcSpecs::MyProc.new { "hello".size }
passed_prc.class.should == ProcSpecs::MyProc
prc = ProcSpecs::MyProc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call.should == 5
end
it "returns the passed proc created from a method" do
method = "hello".method(:size)
passed_prc = ProcSpecs::MyProc.new(&method)
passed_prc.class.should == ProcSpecs::MyProc
prc = ProcSpecs::MyProc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call.should == 5
end
it "returns the passed proc created from a symbol" do
passed_prc = ProcSpecs::MyProc.new(&:size)
passed_prc.class.should == ProcSpecs::MyProc
prc = ProcSpecs::MyProc.new(&passed_prc)
prc.should equal(passed_prc)
prc.call("hello").should == 5
end
end
describe "Proc.new without a block" do
it "raises an ArgumentError" do
lambda { Proc.new }.should raise_error(ArgumentError)
end
it "raises an ArgumentError if invoked from within a method with no block" do
lambda { ProcSpecs.new_proc_in_method }.should raise_error(ArgumentError)
end
it "raises an ArgumentError if invoked on a subclass from within a method with no block" do
lambda { ProcSpecs.new_proc_subclass_in_method }.should raise_error(ArgumentError)
end
ruby_version_is ""..."2.7" do
it "uses the implicit block from an enclosing method" do
def some_method
Proc.new
end
prc = some_method { "hello" }
prc.call.should == "hello"
end
end
ruby_version_is "2.7" do
it "can be created if invoked from within a method with a block" do
lambda { ProcSpecs.new_proc_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
end
it "can be created if invoked on a subclass from within a method with a block" do
lambda { ProcSpecs.new_proc_subclass_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
end
it "can be create when called with no block" do
def some_method
Proc.new
end
-> {
some_method { "hello" }
}.should complain(/Capturing the given block using Proc.new is deprecated/)
end
end
end
|