我有以下测试类:
import XCTest
@testable import DogYears
class DogYearsTests: XCTestCase {
let calc = Calculator()
var resData: Data? = nil
override func 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.
}
func testResult(){
let res1 = calc.evaluate(op: "+", arg1: 2.0, arg2: 9.0)
let res2 = calc.result
XCTAssert(res1 == res2)
}
func testInfoLoading(){
let url = "https://raw.githubusercontent.com/FahimF/Test/master/DogYears-Info.rtf"
HTTPClient.shared.get(url: url) { (data, error) in
XCTAssertNil(error)
XCTAssertNotNil(data, "empty data")
self.resData = data
let predicate = NSPredicate(format: "resData != nil")
let exp = expectation(for: predicate, evaluatedWith: nil, handler: nil)
}
}
}
在线:
let exp = expectation(for: predicate, evaluatedWith: nil, handler: nil)
编译器警告我红色错误:
Implicit use of 'self' in closure; use 'self.' to make capture semantics explicit
但我不使用任何自变量。为什么不编译?
最佳答案
由于 DogYearsTests 继承自 XCTestCase,expectation 是你类的一个方法,因此你应该用 self 调用它。
关于swift - 在 Swift 闭包中隐式使用 self,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55928578/