Let's Talk About: Double Standards - Copy-Pastability (after)

lets-talk-about-double-standards.swift

private enum Constant {
  static let scenarioAFile = "screenScenarioA"
  static let scenarioBFile = "screenScenarioB"
}

func testScenarioA() {
  // Arrange & Act
  updateStructureWithJSON(named: Constant.scenarioAFile)
  let result = screenStructureManager.current 
  let expectedResult: [Component] = [.header, .products]

  // Assert
  XCTAssertEqual(result, expectedResult)
}

func testScenarioB() {
  // Arrange & Act
  updateStructureWithJSON(named: Constant.scenarioBFile)
  let result = structureManager.current 
  let expectedResult: [Component] = [.header, .promoBanner, .products, .footer]

  // Assert
  XCTAssertEqual(result, expectedResult)
}

private func updateStructureWithJSON(named fileName: String) {
  guard let filePath = Bundle(for: type(of: self)).path(forResource: fileName, ofType: FileType.json),
      let data = try? Data(contentsOf: URL(fileURLWithPath: filePath)),
      let jsonObject = try? JSONSerialization.jsonObject(with: data, options: .allowFragments),
      else { return XCTFail("Failed to load JSON") }
  
  screenStructureManager.update(with: jsonObject)
}