 	private var error: TestError = .init(code: 42)
 	private lazy var successResult: Result<Int> = .success(self.value)
 	private lazy var failureResult: Result<Int> = .failure(self.error)
+	private var mapValue: String = "1"
+	private var mapError: TestError = .init(code: 88)
 	
 	// MARK: Unit tests
 

			XCTFail("The result should be a `failure`.", file: file, line: line)
		}
	}
}

		}
	}

	func assertIsMapValue(_ value: String?, file: StaticString = #file, line: UInt = #line) {
		XCTAssertEqual(value, self.mapValue, "The value should be the map value.", file: file, line: line)
	}

	func assertIsMapError(_ error: Error?, file: StaticString = #file, line: UInt = #line) {
		if let error = error as? TestError, error == self.mapError {} else {
			XCTFail("The error should be the map error.", file: file, line: line)
		}
	}

	func assertIsSuccessWithSetupValue(_ result: Result<Int>, file: StaticString = #file, line: UInt = #line) {
		if case .success(let value) = result {
			assertIsSetupValue(value, file: file, line: line)
