| /* |
| * Copyright 2021 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package androidx.window.layout |
| |
| import androidx.window.core.ConsumerAdapter |
| import androidx.window.extensions.WindowExtensionsProvider |
| import org.junit.Assert.assertNotNull |
| import org.junit.Assert.assertNull |
| import org.junit.Test |
| |
| /** |
| * An integration test to verify that if [WindowExtensionsProvider] is present then |
| * [SafeWindowLayoutComponentProvider.windowLayoutComponent] will return a value. This can fail if |
| * the implementation of window:extensions:extensions does not have the expected API. |
| */ |
| class SafeWindowLayoutComponentProviderTest { |
| |
| /** |
| * Test that if [WindowExtensionsProvider] is available then |
| * [SafeWindowLayoutComponentProvider.windowLayoutComponent] returns a non-null value. |
| */ |
| @Test |
| fun windowLayoutComponentIsAvailable_ifProviderIsAvailable() { |
| val loader = SafeWindowLayoutComponentProviderTest::class.java.classLoader!! |
| val consumerAdapter = ConsumerAdapter(loader) |
| val safeComponent = SafeWindowLayoutComponentProvider(loader, consumerAdapter) |
| .windowLayoutComponent |
| |
| try { |
| val extensions = WindowExtensionsProvider.getWindowExtensions() |
| val actualComponent = extensions.windowLayoutComponent |
| if (actualComponent == null) { |
| assertNull(safeComponent) |
| } else { |
| assertNotNull(safeComponent) |
| } |
| } catch (e: UnsupportedOperationException) { |
| // Invalid implementation of extensions |
| assertNull(safeComponent) |
| } |
| } |
| } |
