Hands-On Server-Side Web Development with Swift

Learning useful assertion macros

Swift test assertions are useful in checking expected results in test methods. There is a family of macros similar to XCTAssert() to help evaluate any given conditions. Each macro optionally allows a literal NSString to describe what happens when there is a failure. For XCTAssert(), a failure is when the Boolean expression == false:

Macro	Usage
XCTAssertTrue()	Assert an expression to be true
XCTAssertFalse()	Assert an expression to be false
XCTAssertNil()	Assert an expression to be nil
XCTAssertNotNil()	Assert an expression to be not nil
XCTAssertEqual()	Assert two expressions to have the same value
XCTAssertNotEqual()	Assert two expressions to have the different value
XCTAssertEqualObjects() ...