.andThrow(anException) will not throw the provided anException

[KaIKuxy]

Based on the documentation:

OCMStub([mock someMethod]).andThrow(anException);

When someMethod is invoked the stub will throw anException.

However it seems like a special exception is thrown instead of the provided one, the provided one is wrapped inside the userInfo

ocmock/Source/OCMock/OCMExceptionReturnValueProvider.m

Lines 20 to 30 in 4e8ba16

	@implementation OCMExceptionReturnValueProvider
	NSString *OCMStubbedException = @"OCMStubbedException";
	- (void)handleInvocation:(NSInvocation *)anInvocation
	{
	[[NSException exceptionWithName:OCMStubbedException reason:@"Exception stubbed in test." userInfo:@{ @"exception" : returnValue }] raise];
	}
	@end

---

Repro

@interface Dummy : NSObject
- (void)method;
- (void)throwException;
@end

@implementation Dummy
- (void)method {
    @try {
        [self throwException];
    } @catch (NSException *exception) {
        NSLog(@"exception %@ %@", exception.name, exception.reason);
    }
}
- (void)throwException { }
@end

@interface DummyTests : XCTestCase
@end
@implementation DummyTests
- (void)testDummy {
    id dummyPartialMock = OCMPartialMock([Dummy new]);
    OCMStub([dummyPartialMock throwException]).andThrow([NSException exceptionWithName:@"name" reason:@"reason" userInfo:nil]);
    [dummyPartialMock method];
}
@end

The printed message will be exception OCMStubbedException Exception stubbed in test instead of exception name reason.

[erikdoe]

You're reading too much into what's printed. Yes, at some point that exception is thrown in the code you found, but that exception get's caught and unwrapped later:

ocmock/Source/OCMock/OCMockObject.m

Lines 388 to 403 in 7f6e9e9

	@catch(NSException *e)
	{
	if([[e name] isEqualToString:OCMStubbedException])
	{
	e = [[e userInfo] objectForKey:@"exception"];
	}
	else
	{
	// add non-stubbed method to list of exceptions to be re-raised in verify
	@synchronized(exceptions)
	{
	[exceptions addObject:e];
	}
	}
	[e raise];
	}

There's a unit test that shows the correct behaviour:

ocmock/Source/OCMockTests/OCMockObjectMacroTests.m

Lines 251 to 258 in 7f6e9e9

	- (void)testSetsUpExceptionThrowing
	{
	id mock = OCMClassMock([NSString class]);
	OCMStub([mock uppercaseString]).andThrow([NSException exceptionWithName:@"TestException" reason:@"Testing" userInfo:nil]);
	XCTAssertThrowsSpecificNamed([mock uppercaseString], NSException, @"TestException", @"Should have thrown correct exception");
	}

In your dummy, please check what exception is actually thrown.