XCTAssertEqualOptional.swift

/// like XCTAssertEqual, but handles optional unwrapping
public func XCTAssertEqualOptional<T: Any where T: Equatable>(@autoclosure expression1:  () -> T?, @autoclosure expression2:  () -> T?, _ message: String? = nil, file: String = __FILE__, line: UInt = __LINE__) {
    if let exp1 = expression1() {
        if let exp2 = expression2() {
            XCTAssertEqual(exp1, exp2, message ?? "", file: file, line: line)
        } else {
            XCTFail(message ?? "exp1 != nil, exp2 == nil", file: file, line: line)
        }
    } else if let exp2 = expression2() {
        XCTFail(message ?? "exp1 == nil, exp2 != nil", file: file, line: line)
    }
}