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
|
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Enumerable#none?" do
before :each do
@empty = EnumerableSpecs::Empty.new
@enum = EnumerableSpecs::Numerous.new
@enum1 = EnumerableSpecs::Numerous.new(0, 1, 2, -1)
@enum2 = EnumerableSpecs::Numerous.new(nil, false, true)
end
it "always returns true on empty enumeration" do
@empty.none?.should == true
@empty.none? { true }.should == true
end
it "raises an ArgumentError when more than 1 argument is provided" do
lambda { @enum.none?(1, 2, 3) }.should raise_error(ArgumentError)
lambda { [].none?(1, 2, 3) }.should raise_error(ArgumentError)
lambda { {}.none?(1, 2, 3) }.should raise_error(ArgumentError)
end
ruby_version_is ""..."2.5" do
it "raises an ArgumentError when any arguments provided" do
lambda { @enum.none?(Proc.new {}) }.should raise_error(ArgumentError)
lambda { @enum.none?(nil) }.should raise_error(ArgumentError)
lambda { @empty.none?(1) }.should raise_error(ArgumentError)
lambda { @enum.none?(1) {} }.should raise_error(ArgumentError)
end
end
it "does not hide exceptions out of #each" do
lambda {
EnumerableSpecs::ThrowingEach.new.none?
}.should raise_error(RuntimeError)
lambda {
EnumerableSpecs::ThrowingEach.new.none? { false }
}.should raise_error(RuntimeError)
end
describe "with no block" do
it "returns true if none of the elements in self are true" do
e = EnumerableSpecs::Numerous.new(false, nil, false)
e.none?.should be_true
end
it "returns false if at least one of the elements in self are true" do
e = EnumerableSpecs::Numerous.new(false, nil, true, false)
e.none?.should be_false
end
it "gathers whole arrays as elements when each yields multiple" do
multi = EnumerableSpecs::YieldsMultiWithFalse.new
multi.none?.should be_false
end
end
describe "with a block" do
before :each do
@e = EnumerableSpecs::Numerous.new(1,1,2,3,4)
end
it "passes each element to the block in turn until it returns true" do
acc = []
@e.none? {|e| acc << e; false }
acc.should == [1,1,2,3,4]
end
it "stops passing elements to the block when it returns true" do
acc = []
@e.none? {|e| acc << e; e == 3 ? true : false }
acc.should == [1,1,2,3]
end
it "returns true if the block never returns true" do
@e.none? {|e| false }.should be_true
end
it "returns false if the block ever returns true" do
@e.none? {|e| e == 3 ? true : false }.should be_false
end
it "does not hide exceptions out of the block" do
lambda {
@enum.none? { raise "from block" }
}.should raise_error(RuntimeError)
end
it "gathers initial args as elements when each yields multiple" do
multi = EnumerableSpecs::YieldsMulti.new
yielded = []
multi.none? { |e| yielded << e; false }
yielded.should == [1, 3, 6]
end
it "yields multiple arguments when each yields multiple" do
multi = EnumerableSpecs::YieldsMulti.new
yielded = []
multi.none? { |*args| yielded << args; false }
yielded.should == [[1, 2], [3, 4, 5], [6, 7, 8, 9]]
end
end
ruby_version_is "2.5" do
describe 'when given a pattern argument' do
it "calls `===` on the pattern the return value " do
pattern = EnumerableSpecs::Pattern.new { |x| x == 3 }
@enum1.none?(pattern).should == true
pattern.yielded.should == [[0], [1], [2], [-1]]
end
# may raise an exception in future versions
ruby_version_is ""..."2.6" do
it "ignores block" do
@enum2.none?(Integer) { raise }.should == true
[1, 2, nil].none?(TrueClass) { raise }.should == true
{a: 1}.none?(Hash) { raise }.should == true
end
end
it "always returns true on empty enumeration" do
@empty.none?(Integer).should == true
[].none?(Integer).should == true
{}.none?(NilClass).should == true
end
it "does not hide exceptions out of #each" do
lambda {
EnumerableSpecs::ThrowingEach.new.none?(Integer)
}.should raise_error(RuntimeError)
end
it "returns true if the pattern never returns a truthy value" do
@enum2.none?(Integer).should == true
pattern = EnumerableSpecs::Pattern.new { |x| nil }
@enum.none?(pattern).should == true
[1, 42, 3].none?(pattern).should == true
{a: 1, b: 2}.none?(pattern).should == true
end
it "returns false if the pattern ever returns other than false or nil" do
pattern = EnumerableSpecs::Pattern.new { |x| x < 0 }
@enum1.none?(pattern).should == false
pattern.yielded.should == [[0], [1], [2], [-1]]
[1, 2, 3, -1].none?(pattern).should == false
{a: 1}.none?(Array).should == false
end
it "does not hide exceptions out of pattern#===" do
pattern = EnumerableSpecs::Pattern.new { raise "from pattern" }
lambda {
@enum.none?(pattern)
}.should raise_error(RuntimeError)
end
it "calls the pattern with gathered array when yielded with multiple arguments" do
multi = EnumerableSpecs::YieldsMulti.new
pattern = EnumerableSpecs::Pattern.new { false }
multi.none?(pattern).should == true
pattern.yielded.should == [[[1, 2]], [[3, 4, 5]], [[6, 7, 8, 9]]]
end
end
end
end
|
