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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
trace.should == ex.stack_trace.map(&:to_s)
end
it "implements backtrace=" do
ex = java.lang.Exception.new
ex.set_backtrace ['blah']
ex.backtrace.should == ['blah']
end
it "implements to_s as message" do
ex = java.lang.Exception.new
ex.to_s.should == nil
ex.to_s.should == ex.message
ex = java.lang.Exception.new('hello')
ex.to_s.should == 'hello'
ex.to_s.should == ex.message
end
it "implements to_str to call to_s" do
ex = java.lang.Exception.new
def ex.to_s
'hello'
end
ex.to_str.should == 'hello'
end
it "implements inspect as toString" do
ex = java.lang.Exception.new('hello')
ex.inspect.should == "java.lang.Exception: hello"
end
it "can be rescued by rescue Exception" do
begin
raise ex = java.lang.Exception.new
rescue Exception => e
e.should == 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
e.should == ex
end
end
it "can be rescued by rescue Object" do
begin
raise ex = java.lang.Exception.new
rescue Object => e
e.should == 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
x.foo.should == 1
end
it "does not prevent non-local break from working" do
loop do
begin
break 1
rescue Exception
2
end
end.should == 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
i.should == 2
end
it "does not prevent catch/throw from working" do
lambda do
catch :blah do
begin
throw :blah
rescue Exception
raise
end
end
end.should_not 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
i.should == 2
end
end
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