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Diffstat (limited to 'spec/ruby/optional/capi/exception_spec.rb')
| -rw-r--r-- | spec/ruby/optional/capi/exception_spec.rb | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/exception_spec.rb b/spec/ruby/optional/capi/exception_spec.rb new file mode 100644 index 0000000000..429da093d1 --- /dev/null +++ b/spec/ruby/optional/capi/exception_spec.rb @@ -0,0 +1,201 @@ +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(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(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 == nil + end + + it "accepts an Exception instance" do + @s.rb_set_errinfo(Exception.new).should == nil + end + + it "raises a TypeError if the object is not nil or an Exception instance" do + -> { @s.rb_set_errinfo("error") }.should.raise(TypeError) + end + end + + describe "rb_error_frozen_object" do + it "raises a FrozenError regardless of the object's frozen state" do + # The type of the argument we supply doesn't matter. The choice here is arbitrary and we only change the type + # of the argument to ensure the exception messages are set correctly. + -> { @s.rb_error_frozen_object(Array.new) }.should.raise(FrozenError, "can't modify frozen Array: []") + -> { @s.rb_error_frozen_object(Array.new.freeze) }.should.raise(FrozenError, "can't modify frozen Array: []") + end + + it "properly handles recursive rb_error_frozen_object calls" do + klass = Class.new(Object) + object = klass.new + s = @s + klass.define_method :inspect do + s.rb_error_frozen_object(object) + end + + -> { @s.rb_error_frozen_object(object) }.should.raise(FrozenError, "can't modify frozen #{klass}: ...") + end + end + + describe "rb_syserr_new" do + it "returns system error with default message when passed message is NULL" do + exception = @s.rb_syserr_new(Errno::ENOENT::Errno, nil) + exception.class.should == Errno::ENOENT + exception.message.should.include?("No such file or directory") + exception.should.is_a?(SystemCallError) + end + + it "returns system error with custom message" do + exception = @s.rb_syserr_new(Errno::ENOENT::Errno, "custom message") + + exception.message.should.include?("custom message") + exception.class.should == Errno::ENOENT + exception.should.is_a?(SystemCallError) + end + end + + describe "rb_syserr_new_str" do + it "returns system error with default message when passed message is nil" do + exception = @s.rb_syserr_new_str(Errno::ENOENT::Errno, nil) + + exception.message.should.include?("No such file or directory") + exception.class.should == Errno::ENOENT + exception.should.is_a?(SystemCallError) + end + + it "returns system error with custom message" do + exception = @s.rb_syserr_new_str(Errno::ENOENT::Errno, "custom message") + exception.message.should.include?("custom message") + exception.class.should == Errno::ENOENT + exception.should.is_a?(SystemCallError) + 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(TypeError) + -> { @s.rb_make_exception([Object.new]) }.should.raise(TypeError) + obj = Object.new + def obj.exception + "not exception type" + end + -> { @s.rb_make_exception([obj]) }.should.raise(TypeError) + end + + it "raises an ArgumentError for too many arguments" do + -> { @s.rb_make_exception([Exception, "Message", ["backtrace 1"], "extra"]) }.should.raise(ArgumentError) + end + + it "returns nil for empty arguments" do + @s.rb_make_exception([]).should == nil + end + end +end |