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
|
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/slice', __FILE__)
describe "Array#slice!" do
it "removes and return the element at index" do
a = [1, 2, 3, 4]
a.slice!(10).should == nil
a.should == [1, 2, 3, 4]
a.slice!(-10).should == nil
a.should == [1, 2, 3, 4]
a.slice!(2).should == 3
a.should == [1, 2, 4]
a.slice!(-1).should == 4
a.should == [1, 2]
a.slice!(1).should == 2
a.should == [1]
a.slice!(-1).should == 1
a.should == []
a.slice!(-1).should == nil
a.should == []
a.slice!(0).should == nil
a.should == []
end
it "removes and returns length elements beginning at start" do
a = [1, 2, 3, 4, 5, 6]
a.slice!(2, 3).should == [3, 4, 5]
a.should == [1, 2, 6]
a.slice!(1, 1).should == [2]
a.should == [1, 6]
a.slice!(1, 0).should == []
a.should == [1, 6]
a.slice!(2, 0).should == []
a.should == [1, 6]
a.slice!(0, 4).should == [1, 6]
a.should == []
a.slice!(0, 4).should == []
a.should == []
end
it "properly handles recursive arrays" do
empty = ArraySpecs.empty_recursive_array
empty.slice(0).should == empty
array = ArraySpecs.recursive_array
array.slice(4).should == array
array.slice(0..3).should == [1, 'two', 3.0, array]
end
it "calls to_int on start and length arguments" do
obj = mock('2')
def obj.to_int() 2 end
a = [1, 2, 3, 4, 5]
a.slice!(obj).should == 3
a.should == [1, 2, 4, 5]
a.slice!(obj, obj).should == [4, 5]
a.should == [1, 2]
a.slice!(0, obj).should == [1, 2]
a.should == []
end
it "removes and return elements in range" do
a = [1, 2, 3, 4, 5, 6, 7, 8]
a.slice!(1..4).should == [2, 3, 4, 5]
a.should == [1, 6, 7, 8]
a.slice!(1...3).should == [6, 7]
a.should == [1, 8]
a.slice!(-1..-1).should == [8]
a.should == [1]
a.slice!(0...0).should == []
a.should == [1]
a.slice!(0..0).should == [1]
a.should == []
a = [1,2,3]
a.slice!(0..3).should == [1,2,3]
a.should == []
end
it "calls to_int on range arguments" do
from = mock('from')
to = mock('to')
# So we can construct a range out of them...
def from.<=>(o) 0 end
def to.<=>(o) 0 end
def from.to_int() 1 end
def to.to_int() -2 end
a = [1, 2, 3, 4, 5]
a.slice!(from .. to).should == [2, 3, 4]
a.should == [1, 5]
lambda { a.slice!("a" .. "b") }.should raise_error(TypeError)
lambda { a.slice!(from .. "b") }.should raise_error(TypeError)
end
it "returns last element for consecutive calls at zero index" do
a = [ 1, 2, 3 ]
a.slice!(0).should == 1
a.slice!(0).should == 2
a.slice!(0).should == 3
a.should == []
end
ruby_version_is "" ... "1.8.7" do
# See http://groups.google.com/group/ruby-core-google/t/af70e3d0e9b82f39
it "expands self when indices are out of bounds" do
a = [1, 2]
a.slice!(4).should == nil
a.should == [1, 2]
a.slice!(4, 0).should == nil
a.should == [1, 2, nil, nil]
a.slice!(6, 1).should == nil
a.should == [1, 2, nil, nil, nil, nil]
a.slice!(8...8).should == nil
a.should == [1, 2, nil, nil, nil, nil, nil, nil]
a.slice!(10..10).should == nil
a.should == [1, 2, nil, nil, nil, nil, nil, nil, nil, nil]
end
end
ruby_version_is "1.8.7" do
it "does not expand array with indices out of bounds" do
a = [1, 2]
a.slice!(4).should == nil
a.should == [1, 2]
a.slice!(4, 0).should == nil
a.should == [1, 2]
a.slice!(6, 1).should == nil
a.should == [1, 2]
a.slice!(8...8).should == nil
a.should == [1, 2]
a.slice!(10..10).should == nil
a.should == [1, 2]
end
it "does not expand array with negative indices out of bounds" do
a = [1, 2]
a.slice!(-3, 1).should == nil
a.should == [1, 2]
a.slice!(-3..2).should == nil
a.should == [1, 2]
end
end
ruby_version_is "" ... "1.9" do
it "raises a TypeError on a frozen array" do
lambda { ArraySpecs.frozen_array.slice!(0, 0) }.should raise_error(TypeError)
end
end
ruby_version_is "1.9" do
it "raises a RuntimeError on a frozen array" do
lambda { ArraySpecs.frozen_array.slice!(0, 0) }.should raise_error(RuntimeError)
end
end
end
describe "Array#slice" do
it_behaves_like(:array_slice, :slice)
end
|
