单元测试

2021-09-24 本文已影响0人 QYCD

新建iOS项目时，如下图勾选【Include Tests】选项，新建项目中就会包含单元测试功能

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若新建时未勾选，则可以先选中你的Target，File -> New -> Target 选择UI Testing Bundle或Unit Testing Bundle新建单元测试模块

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先看UnitTestTests.swift文件

import XCTest
@testable import UnitTest

class UnitTestTests: XCTestCase {

    override func setUpWithError() throws {
        // Put setup code here. This method is called before the invocation of each test method in the class.
        // 在调用类中每个测试方法之前先调用该方法，在这里可以做些需要用到的初始化等工作
    }

    override func tearDownWithError() throws {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        // 在调用类中每个测试方法之后调用该方法，这里可以做些收尾工作
    }

    func testExample() throws {
        // This is an example of a functional test case.
        // Use XCTAssert and related functions to verify your tests produce the correct results.
        // 给出的单元测试例子，可以将测试代码写在这里 也可以新建一个test方法
    }

    func testPerformanceExample() throws {
        // This is an example of a performance test case.
        self.measure {
            // Put the code you want to measure the time of here.
        }
    }

}

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比如新建了一个工具类，里面有个求两数相加之和的方法

import Foundation

class UnitTool {
    static func add(num1: Int, num2: Int) -> Int {
        return num1 + num2
    }
}

如果在VC中使用:

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
                
        let result = UnitTool.add(num1: 20, num2: 100)
        print("result = \(result)"); // 打印result = 120
    }
}

单元测试