TestHelper.swift

import Foundation

class TestDataHelper {
  // 使い方
  // let agreement: Agreement = TestDataHelper.testData(forResource: "Some", ofType: "json")
	static func testData<T: Decodable>(forResource resource: String, ofType type: String) -> T {
		let url = Bundle(for: TestDataHelper.self).url(forResource: resource, withExtension: type)!
		let data = try! Data(contentsOf: url)

		let decoder = JSONDecoder()
		decoder.keyDecodingStrategy = .convertFromSnakeCase
		let decodedData: T = try! decoder.decode(T.self, from: data)

		return decodedData
	}

  
  // 使い方
　　　　//   let json = """
　　　　// {
　　　　// "screen_name": "ktanaka117"
　　　　// }
　　　　// """
　　　　// let billingAgreement: BillingAgreementResponseObject = TestDataHelper.testData(fromJsonString: json)
	static func testData<T: Decodable>(fromJsonString json: String) -> T {
		let data = json.data(using: .utf8)

		let decoder = JSONDecoder()
		decoder.keyDecodingStrategy = .convertFromSnakeCase
		let decodedData: T = try! decoder.decode(T.self, from: data!)

		return decodedData
	}
}