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
|
assert('Kernel.eval', '15.3.1.2.3') do
assert_equal(10) { Kernel.eval '1 * 10' }
assert_equal('aaa') { Kernel.eval "'a' * 3" }
assert_equal(10) {
a = 10
Kernel.eval "a"
}
assert_equal(20) {
a = 10
Kernel.eval "a = 20"
a
}
assert_equal(15) {
c = 5
lambda {
a = 10
Kernel.eval "c = a + c"
}.call
c
}
assert_equal(5) {
c = 5
lambda {
Kernel.eval 'lambda { c }.call'
}.call
}
assert_equal(15) {
c = 5
lambda {
a = 10
Kernel.eval 'lambda { c = a + c }.call'
}.call
c
}
assert_equal(2) {
a = 10
Kernel.eval 'def f(a); b=a+1; end'
f(1)
}
end
assert('Kernel#eval', '15.3.1.3.12') do
assert_equal(10) { eval '1 * 10' }
end
assert('rest arguments of eval') do
assert_raise(ArgumentError) { Kernel.eval('0', 0, 'test', 0) }
assert_equal ['test', 'test.rb', 10] do
Kernel.eval('[\'test\', __FILE__, __LINE__]', nil, 'test.rb', 10)
end
end
assert 'eval syntax error' do
assert_raise(SyntaxError) do
eval 'p "test'
end
end
assert('String instance_eval') do
obj = Object.new
obj.instance_eval{ @test = 'test' }
assert_raise(ArgumentError) { obj.instance_eval(0) { } }
assert_raise(ArgumentError) { obj.instance_eval('0', 'test', 0, 'test') }
assert_equal(['test.rb', 10]) { obj.instance_eval('[__FILE__, __LINE__]', 'test.rb', 10)}
assert_equal('test') { obj.instance_eval('@test') }
assert_equal('test') { obj.instance_eval { @test } }
o = Object.new
assert_equal ['', o, o], o.instance_eval("[''].each { |s| break [s, o, self] }")
end
assert('Kernel.#eval(string) context') do
class TestEvalConstScope
EVAL_CONST_CLASS = 'class'
def const_string
eval 'EVAL_CONST_CLASS'
end
end
obj = TestEvalConstScope.new
assert_raise(NameError) { eval 'EVAL_CONST_CLASS' }
assert_equal('class') { obj.const_string }
end
assert('Object#instance_eval with begin-rescue-ensure execution order') do
class HellRaiser
def raise_hell
order = [:enter_raise_hell]
begin
order.push :begin
self.instance_eval("raise 'error'")
rescue
order.push :rescue
ensure
order.push :ensure
end
order
end
end
hell_raiser = HellRaiser.new
assert_equal([:enter_raise_hell, :begin, :rescue, :ensure], hell_raiser.raise_hell)
end
assert('Kernel#instance_eval() to define singleton methods Issue #3141') do
foo_class = Class.new do
def bar(x)
instance_eval "def baz; #{x}; end"
end
end
f1 = foo_class.new
f2 = foo_class.new
f1.bar 1
f2.bar 2
assert_equal(1){f1.baz}
assert_equal(2){f2.baz}
end
assert('Kernel.#eval(string) Issue #4021') do
assert_equal('FOO') { (eval <<'EOS').call }
foo = "FOO"
Proc.new { foo }
EOS
assert_equal('FOO') {
def do_eval(code)
eval(code)
end
do_eval(<<'EOS').call
foo = "FOO"
Proc.new { foo }
EOS
}
end
|
