OCMock question

gistfile1.m

- (void)testLoginButtonTapped
{
	// mock a Server
	id serverMock = OCMClassMock([Server class]);
	
	OCMStub([serverMock loginUserWithName:[OCMArg any] password:[OCMArg any]]).andReturn(YES);
	_loginVC.serverToUse = serverMock;

	// simulate input in name field
	_loginVC.userTextField.text = @"foo";
	[_loginVC.userTextField sendActionsForControlEvents:UIControlEventEditingChanged];
	
	// simulate input in password field
	_loginVC.passwordTextField.text = @"bar";
	[_loginVC.passwordTextField sendActionsForControlEvents:UIControlEventEditingChanged];

	// simulate login button press
	[_loginVC.loginButton sendActionsForControlEvents:UIControlEventTouchUpInside];
	
	// verify it has called the expected method
	OCMVerify([serverMock loginUserWithName:[OCMArg any] password:[OCMArg any]]);
}

- (void)testExample {

    id serverMock = OCMClassMock([MyServer class]);

    OCMExpect([serverMock loginWithUsername:@"Peter" andPassword:@"Paul"]).andReturn(YES);

    self.sut.server = serverMock;

    BOOL retVal = [self.sut doSomething];

    XCTAssertTrue(retVal);
    OCMVerifyAll(serverMock);
}

/// 


@implementation MyController


- (BOOL)doSomething
{
    return [self.server loginWithUsername:@"Peter" andPassword:@"Paul"];
}

@end

The OCMVerifyAll(serverMock); does the check of the expected method call and parameters for you.