1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.systemui.common.coroutine
16 
17 import androidx.test.ext.junit.runners.AndroidJUnit4
18 import androidx.test.filters.SmallTest
19 import com.android.systemui.SysuiTestCase
20 import com.google.common.truth.Truth.assertThat
21 import kotlinx.coroutines.CancellationException
22 import kotlinx.coroutines.ExperimentalCoroutinesApi
23 import kotlinx.coroutines.cancel
24 import kotlinx.coroutines.test.runTest
25 import org.junit.Test
26 import org.junit.runner.RunWith
27 
28 /** atest SystemUITests:CoroutineResultTest */
29 @OptIn(ExperimentalCoroutinesApi::class)
30 @SmallTest
31 @RunWith(AndroidJUnit4::class)
32 class CoroutineResultTest : SysuiTestCase() {
33 
34     @Test
<lambda>null35     fun suspendRunCatching_shouldReturnSuccess() = runTest {
36         val actual = suspendRunCatching { "Placeholder" }
37         assertThat(actual.isSuccess).isTrue()
38         assertThat(actual.getOrNull()).isEqualTo("Placeholder")
39     }
40 
41     @Test
<lambda>null42     fun suspendRunCatching_whenExceptionThrow_shouldResumeWithException() = runTest {
43         val actual = suspendRunCatching { throw Exception() }
44         assertThat(actual.isFailure).isTrue()
45         assertThat(actual.exceptionOrNull()).isInstanceOf(Exception::class.java)
46     }
47 
48     @Test(expected = CancellationException::class)
<lambda>null49     fun suspendRunCatching_whenCancelled_shouldResumeWithException() = runTest {
50         suspendRunCatching { cancel() }
51     }
52 }
53