material-components_material-components-ios/components/AppBar/tests/unit/AppBarViewControllerInitializationTests.swift

// Copyright 2018-present the Material Components for iOS authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import XCTest
import MaterialComponents.MaterialAppBar

class AppBarViewControllerInitializationTests: XCTestCase {

  func testHeaderStackViewTopBarIsTheNavigationBarAfterInitialization() {
    // Given
    let appBarViewController = MDCAppBarViewController()

    // Then
    XCTAssertEqual(
      appBarViewController.headerStackView.topBar,
      appBarViewController.navigationBar,
      "Expected the app bar's top bar to be set to the navigation bar after"
        + " initialization.")
  }
}