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我無法正確獲取我的單元測試，我想檢查它的數據是否在我的結構中，我可以讓我的函數打印出有多少項目，但測試失敗，因爲期望不會回來。 我知道我需要使用Swift單元測試：異步
XCTAssertNotNil(self.players.countPlayers)
我的繼承人功能標題
public func getPlayer(completionHandler: @escaping (Data?, URLResponse?, Error?) -> (Swift.Void)
) throws{
let jsonUrl: String = "http://api.football-data.org/v1/teams/78/players"
//print(jsonUrl)
// NSURL sessions allow us to download data using HTTP for APIs
// a NSURL which contains a correct resourse
guard let leagueURL = NSURL(string: jsonUrl)else{
print("error creating string")
throw JSONError.InvalidURL(jsonUrl)
}
let task = URLSession.shared.dataTask(with: leagueURL as URL) {data, responce, error in
do {
let json = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
self.searchLeague = []
for item in json["players"] as! [[String: AnyObject]]{
guard let name = ((item["name"]!) as? String) else{
throw JSONError.InvalidKey("invalid player name")
}
guard let position = ((item["position"]!) as? String) else{
throw JSONError.InvalidKey("invalid player position")
}
let jerseyNumber = (((item["jerseyNumber"]!) as? String) ?? ("No Assigned jersey number"))
guard let dateOfBirth = ((item["dateOfBirth"]!) as? String) else{
throw JSONError.InvalidKey("invalid player DOB")
}
guard let nationality = ((item["nationality"]!) as? String) else{
throw JSONError.InvalidKey("invalid player DOB")
}
let marketvalue = (((item["marketValue"]!) as? String) ?? ("Market value info not available"))
self.searchPlayer.append(Player(name: name, position: position, jerseyNumber: jerseyNumber, dateOfBirth: dateOfBirth, nationality: nationality, marketValue: marketvalue))
}
}catch{
print("error thrown: \(error)")
}
print("Num of Players \(self.searchPlayer.count)")
}
task.resume()
}
和我的測試
func testGetPlayers(){
let expectations = expectation(description: "Wait for exception")
try! self.players.getPlayer{_,_,_ in
expectations.fulfill()
}
waitForExpectations(timeout: 5) { error in
}
}