Random crash: Cannot invoke setBridgeInflater because "context" is null

[matejdro]

Description

For us, tests seem to sporadically crash on the CI with the following exception:

java.lang.NullPointerException: Cannot invoke "com.android.layoutlib.bridge.android.BridgeContext.setBridgeInflater(android.view.BridgeInflater)" because "context" is null
	at com.android.layoutlib.bridge.impl.RenderSessionImpl.init(RenderSessionImpl.java:198)
	at app.cash.paparazzi.Paparazzi.prepare(Paparazzi.kt:174)
	at app.cash.paparazzi.Paparazzi$apply$statement$1.evaluate(Paparazzi.kt:123)
	at com.google.testing.junit.testparameterinjector.PluggableTestRunner$ContextMethodRule$1.evaluate(PluggableTestRunner.java:429)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:108)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:40)
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:60)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:52)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at jdk.proxy1/jdk.proxy1.$Proxy2.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

Sometimes, this happens together with #494 (some tests will fail with this null exception, some with the initSystem error)

Steps to Reproduce

We can't reproduce it reliably. #494 suggests Lottie might be the culprit. Will perform more tests and update this issue if I find anything more concrete.

Expected behavior

Paparazzi shouldn't crash

Additional information:

• Paparazzi Version: 1.3.0
• OS: Ubuntu 22.04.2
• Compile SDK: 33
• Gradle Version: 8.0.2
• Android Gradle Plugin Version: 8.0.2

[matejdro]

Duplicate of the #630

[jamesrapadmi]

I'm seeing this issue on all my paparazzi tests, even without SessionParams.RenderingMode.SHRINK and with the following setup block.

@Before
fun setup() {
    LottieTask.EXECUTOR = Executor(Runnable::run)
}

Is there anything else I can do to avoid this?

java.lang.NullPointerException: Cannot invoke "com.android.layoutlib.bridge.android.BridgeContext.setBridgeInflater(android.view.BridgeInflater)" because "context" is null
	at com.android.layoutlib.bridge.impl.RenderSessionImpl.init(RenderSessionImpl.java:198)
	at app.cash.paparazzi.Paparazzi.prepare(Paparazzi.kt:175)
	at app.cash.paparazzi.Paparazzi$apply$statement$1.evaluate(Paparazzi.kt:124)
...

For reference, I'm on:

• Paparazzi Version: 1.3.1
• OS: macOS
• Compile SDK: 34
• Gradle Version: 8.3
• Android Gradle Plugin Version: 8.1.1