1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.test.tracing.coroutines 18 19 import android.platform.test.annotations.DisableFlags 20 import com.android.app.tracing.coroutines.createCoroutineTracingContext 21 import com.android.app.tracing.coroutines.traceCoroutine 22 import com.android.app.tracing.coroutines.traceThreadLocal 23 import com.android.systemui.Flags.FLAG_COROUTINE_TRACING 24 import com.android.test.tracing.coroutines.util.FakeTraceState 25 import kotlin.coroutines.CoroutineContext 26 import kotlin.coroutines.EmptyCoroutineContext 27 import kotlinx.coroutines.withContext 28 import org.junit.Assert.assertFalse 29 import org.junit.Assert.assertNull 30 import org.junit.Assert.fail 31 import org.junit.Test 32 33 @DisableFlags(FLAG_COROUTINE_TRACING) 34 class FlagDisabledTest : TestBase() { <lambda>null35 override val extraContext: CoroutineContext by lazy { EmptyCoroutineContext } 36 37 @Test <lambda>null38 fun tracingDisabledWhenFlagIsOff() = runTest { 39 assertFalse(com.android.systemui.Flags.coroutineTracing()) 40 assertNull(traceThreadLocal.get()) 41 withContext(createCoroutineTracingContext(testMode = true)) { 42 assertNull(traceThreadLocal.get()) 43 traceCoroutine("hello") { // should not crash 44 assertNull(traceThreadLocal.get()) 45 } 46 47 // Change Trace.isEnabled() to false so that the lazy-String is not called for async 48 // tracing, which would be expected even when coroutine tracing is disabled. 49 FakeTraceState.isTracingEnabled = false 50 51 // Verify that the lazy-String is not called when tracing is disabled and feature flag 52 // is off 53 traceCoroutine({ 54 fail("Lazy string should not be called when FLAG_COROUTINE_TRACING is disabled") 55 "error" 56 }) { 57 assertNull(traceThreadLocal.get()) 58 } 59 } 60 } 61 } 62