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
|
require File.dirname(__FILE__) + "/../spec_helper"
require 'java'
describe "A Java Throwable" do
it "implements backtrace" do
ex = java.lang.Exception.new
trace = nil
lambda {trace = ex.backtrace}.should_not raise_error
expect(trace).to eq(ex.stack_trace.map(&:to_s))
end
it "implements backtrace= as a no-op" do
ex = java.lang.Exception.new
backtrace = ex.backtrace
ex.set_backtrace ['blah']
expect(ex.backtrace).to eq backtrace
end
it "implements to_s as message" do
ex = java.lang.Exception.new
expect(ex.to_s).to eq ""
expect(ex.to_s).to eq ex.message
ex = java.lang.Exception.new('hello')
expect(ex.to_s).to eq 'hello'
expect(ex.to_s).to eq ex.message
end
it "implements to_str to call to_s" do
ex = java.lang.Exception.new
def ex.to_s
'hello'
end
expect(ex.to_str).to eq 'hello'
end
it "implements inspect as toString" do
ex = java.lang.Exception.new('hello')
expect(ex.inspect).to eq "java.lang.Exception: hello"
end
it "can be rescued by rescue Exception" do
begin
raise ex = java.lang.Exception.new
rescue Exception => e
expect(e).to eq(ex)
end
end
it "can be rescued by rescue java.lang.Throwable" do
begin
raise ex = java.lang.Exception.new
rescue java.lang.Exception => e
expect(e).to eq(ex)
end
end
it "can be rescued by rescue Object" do
begin
raise ex = java.lang.Exception.new
rescue Object => e
expect(e).to eq(ex)
end
end
end
describe "Rescuing a Java exception using Exception" do
it "does not prevent non-local return from working" do
x = Object.new
def x.foo
loop do
begin
return 1
rescue Exception
2
end
end
end
expect(x.foo).to eq 1
end
it "does not prevent non-local break from working" do
expect(loop do
begin
break 1
rescue Exception
2
end
end).to eq 1
end
it "does not prevent non-local redo from working" do
i = 0
loop do
begin
i += 1
redo if i < 2
break
rescue Exception
i = 3
end
end
expect(i).to eq 2
end
it "does not prevent catch/throw from working" do
expect do
catch :blah do
begin
throw :blah
rescue Exception
raise
end
end
end.not_to raise_error
end
it "does not prevent retry from working" do
i = 0
begin
i += 1
raise StandardError if i < 2
rescue StandardError
begin
retry
rescue Exception
i = 3
end
end
expect(i).to eq 2
end
end
|
