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
|
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Kernel#warn" do
before :each do
@before_verbose = $VERBOSE
@before_separator = $/
end
after :each do
$VERBOSE = @before_verbose
$/ = @before_separator
end
it "is a private method" do
Kernel.should have_private_instance_method(:warn)
end
it "requires multiple arguments" do
Kernel.method(:warn).arity.should < 0
end
it "does not append line-end if last character is line-end" do
-> {
$VERBOSE = true
warn("this is some simple text with line-end\n")
}.should output(nil, "this is some simple text with line-end\n")
end
it "calls #write on $stderr if $VERBOSE is true" do
-> {
$VERBOSE = true
warn("this is some simple text")
}.should output(nil, "this is some simple text\n")
end
it "calls #write on $stderr if $VERBOSE is false" do
-> {
$VERBOSE = false
warn("this is some simple text")
}.should output(nil, "this is some simple text\n")
end
it "does not call #write on $stderr if $VERBOSE is nil" do
-> {
$VERBOSE = nil
warn("this is some simple text")
}.should output(nil, "")
end
it "writes each argument on a line when passed multiple arguments" do
-> {
$VERBOSE = true
warn("line 1", "line 2")
}.should output(nil, "line 1\nline 2\n")
end
it "writes each array element on a line when passes an array" do
-> {
$VERBOSE = true
warn(["line 1", "line 2"])
}.should output(nil, "line 1\nline 2\n")
end
it "does not write strings when passed no arguments" do
-> {
$VERBOSE = true
warn
}.should output("", "")
end
it "writes the default record separator and NOT $/ to $stderr after the warning message" do
-> {
$VERBOSE = true
$/ = 'rs'
warn("")
}.should output(nil, /\n/)
end
it "writes to_s representation if passed a non-string" do
obj = mock("obj")
obj.should_receive(:to_s).and_return("to_s called")
-> {
$VERBOSE = true
warn(obj)
}.should output(nil, "to_s called\n")
end
ruby_version_is "2.5" do
describe ":uplevel keyword argument" do
before :each do
$VERBOSE = true
end
it "prepends a message with specified line from the backtrace" do
w = KernelSpecs::WarnInNestedCall.new
-> { w.f4("foo", 0) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.warn_call_lineno}: warning: foo|)
-> { w.f4("foo", 1) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.f1_call_lineno}: warning: foo|)
-> { w.f4("foo", 2) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.f2_call_lineno}: warning: foo|)
-> { w.f4("foo", 3) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.f3_call_lineno}: warning: foo|)
end
it "converts first arg using to_s" do
w = KernelSpecs::WarnInNestedCall.new
-> { w.f4(false, 0) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.warn_call_lineno}: warning: false|)
-> { w.f4(nil, 1) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.f1_call_lineno}: warning: |)
obj = mock("obj")
obj.should_receive(:to_s).and_return("to_s called")
-> { w.f4(obj, 2) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.f2_call_lineno}: warning: to_s called|)
end
it "does not prepend caller information if line number is too big" do
w = KernelSpecs::WarnInNestedCall.new
-> { w.f4("foo", 100) }.should output(nil, "warning: foo\n")
end
it "prepends even if a message is empty or nil" do
w = KernelSpecs::WarnInNestedCall.new
-> { w.f4("", 0) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.warn_call_lineno}: warning: \n$|)
-> { w.f4(nil, 0) }.should output(nil, %r|core/kernel/fixtures/classes.rb:#{w.warn_call_lineno}: warning: \n$|)
end
it "converts value to Integer" do
w = KernelSpecs::WarnInNestedCall.new
-> { w.f4(0.1) }.should output(nil, %r|classes.rb:#{w.warn_call_lineno}:|)
-> { w.f4(Rational(1, 2)) }.should output(nil, %r|classes.rb:#{w.warn_call_lineno}:|)
end
it "raises ArgumentError if passed negative value" do
-> { warn "", uplevel: -2 }.should raise_error(ArgumentError)
-> { warn "", uplevel: -100 }.should raise_error(ArgumentError)
end
it "raises ArgumentError if passed -1" do
-> { warn "", uplevel: -1 }.should raise_error(ArgumentError)
end
it "raises TypeError if passed not Integer" do
-> { warn "", uplevel: "" }.should raise_error(TypeError)
-> { warn "", uplevel: [] }.should raise_error(TypeError)
-> { warn "", uplevel: {} }.should raise_error(TypeError)
-> { warn "", uplevel: Object.new }.should raise_error(TypeError)
end
end
it "treats empty hash as no keyword argument" do
h = {}
-> { warn(**h) }.should_not complain(verbose: true)
-> { warn('foo', **h) }.should complain("foo\n")
end
end
end
|
