自分用の覚え書き。
たぶんこのままだとコンパイルエラーになります。
Swiftの例外はObCの例外機構と異なるため、SwiftにはExpression関連のアサート関数が存在しない。
import XCTest

@testable import test

class testTests: XCTestCase {
    
    override func setUp() {
        super.setUp()
        // Put setup code here. This method is called before the invocation of each test method in the class.
    }
    
    override func tearDown() {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }
    
    func testExample() {
        // This is an example of a functional test case.
        // Use XCTAssert and related functions to verify your tests produce the correct results.
        
        let expression = false
        let expression2 = true
        let msg = "msg"
        let nilObj:String?
        let accuracy:Float = 1.0
        let num01 = 1
        let num02 = 2
        
        XCTAssert(expression,  msg)
        
        XCTAssertTrue(expression, msg)
        
        XCTAssertFalse(expression, msg)
        
        XCTAssertNil(nilObj, msg)
        
        XCTAssertNotNil(nilObj, msg)
        
        XCTAssertEqual(expression, expression2, msg)
        
        XCTAssertNotEqual(expression, expression2, msg)
        
        XCTAssertEqualWithAccuracy(expression, expression2, accuracy, msg)
        
        XCTAssertNotEqualWithAccuracy(expression, expression2, accuracy, msg)
        
        // num01がnum02より同じか小さいことを期待する
        XCTAssertLessThanOrEqual(num01, num02, msg)
        
        // num02がnum02より小さいことを期待する
        XCTAssertLessThan(num01, num02, msg)
        
        // num01がnum02より同じか大きいことを期待する
        XCTAssertGreaterThanOrEqual(num01, num02, msg)
        
        // num02がnum02より大きいことを期待する
        XCTAssertGreaterThan(num01, num02, msg)
        
        // 必ず失敗する
        XCTFail(msg)
    }
    
    func testPerformanceExample() {
        // This is an example of a performance test case.
        self.measureBlock {
            // Put the code you want to measure the time of here.
        }
    }
    
}