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require_relative 'spec_helper'
load_extension("exception")
describe "C-API Exception function" do
before :each do
@s = CApiExceptionSpecs.new
end
describe "rb_exc_new" do
it "creates an exception from a C string and length" do
@s.rb_exc_new('foo').to_s.should == 'foo'
end
end
describe "rb_exc_new2" do
it "creates an exception from a C string" do
@s.rb_exc_new2('foo').to_s.should == 'foo'
end
end
describe "rb_exc_new3" do
it "creates an exception from a Ruby string" do
@s.rb_exc_new3('foo').to_s.should == 'foo'
end
end
describe "rb_exc_raise" do
it "raises passed exception" do
runtime_error = RuntimeError.new '42'
-> { @s.rb_exc_raise(runtime_error) }.should raise_error(RuntimeError, '42')
end
it "raises an exception with an empty backtrace" do
runtime_error = RuntimeError.new '42'
runtime_error.set_backtrace []
-> { @s.rb_exc_raise(runtime_error) }.should raise_error(RuntimeError, '42')
end
it "sets $! to the raised exception when not rescuing from an another exception" do
runtime_error = RuntimeError.new '42'
runtime_error.set_backtrace []
begin
@s.rb_exc_raise(runtime_error)
rescue
$!.should == runtime_error
end
end
it "sets $! to the raised exception when $! when rescuing from an another exception" do
runtime_error = RuntimeError.new '42'
runtime_error.set_backtrace []
begin
begin
raise StandardError
rescue
@s.rb_exc_raise(runtime_error)
end
rescue
$!.should == runtime_error
end
end
end
describe "rb_errinfo" do
it "is cleared when entering a C method" do
begin
raise StandardError
rescue
$!.class.should == StandardError
@s.rb_errinfo().should == nil
end
end
it "does not clear $! in the calling method" do
begin
raise StandardError
rescue
@s.rb_errinfo()
$!.class.should == StandardError
end
end
end
describe "rb_set_errinfo" do
after :each do
@s.rb_set_errinfo(nil)
end
it "accepts nil" do
@s.rb_set_errinfo(nil).should be_nil
end
it "accepts an Exception instance" do
@s.rb_set_errinfo(Exception.new).should be_nil
end
it "raises a TypeError if the object is not nil or an Exception instance" do
-> { @s.rb_set_errinfo("error") }.should raise_error(TypeError)
end
end
describe "rb_make_exception" do
it "returns a RuntimeError when given a String argument" do
e = @s.rb_make_exception(["Message"])
e.class.should == RuntimeError
e.message.should == "Message"
end
it "returns the exception when given an Exception argument" do
exc = Exception.new
e = @s.rb_make_exception([exc])
e.should == exc
end
it "returns the exception with the given class and message" do
e = @s.rb_make_exception([Exception, "Message"])
e.class.should == Exception
e.message.should == "Message"
end
it "returns the exception with the given class, message, and backtrace" do
e = @s.rb_make_exception([Exception, "Message", ["backtrace 1"]])
e.class.should == Exception
e.message.should == "Message"
e.backtrace.should == ["backtrace 1"]
end
it "raises a TypeError for incorrect types" do
-> { @s.rb_make_exception([nil]) }.should raise_error(TypeError)
-> { @s.rb_make_exception([Object.new]) }.should raise_error(TypeError)
obj = Object.new
def obj.exception
"not exception type"
end
-> { @s.rb_make_exception([obj]) }.should raise_error(TypeError)
end
it "raises an ArgumentError for too many arguments" do
-> { @s.rb_make_exception([Exception, "Message", ["backtrace 1"], "extra"]) }.should raise_error(ArgumentError)
end
it "returns nil for empty arguments" do
@s.rb_make_exception([]).should == nil
end
end
end
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