test: add E2E tests for crash loop scenarios

features/fixtures/mazerunner/cxx-scenarios-bugsnag/src/main/cpp/cxx-scenarios-bugsnag.cpp

@@ -299,4 +299,10 @@ Java_com_bugsnag_android_mazerunner_scenarios_MultiProcessUnhandledCXXErrorScena
   abort();
 }
 
+JNIEXPORT void JNICALL
+Java_com_bugsnag_android_mazerunner_scenarios_CXXCrashLoopScenario_crash(JNIEnv *env,
+                                                                                             jobject instance) {
+  abort();
+}
+
 }

features/fixtures/mazerunner/cxx-scenarios-bugsnag/src/main/java/com/bugsnag/android/mazerunner/scenarios/CrashLoopScenario.kt

@@ -0,0 +1,51 @@
+package com.bugsnag.android.mazerunner.scenarios
+
+import android.content.Context
+import com.bugsnag.android.Bugsnag
+import com.bugsnag.android.Configuration
+import com.bugsnag.android.OnErrorCallback
+
+/**
+ * Triggers a crash loop which Bugsnag allows recovery from.
+ */
+internal class CXXCrashLoopScenario(
+    config: Configuration,
+    context: Context,
+    eventMetadata: String?
+) : Scenario(config, context, eventMetadata) {
+
+    init {
+        config.autoTrackSessions = false
+        System.loadLibrary("bugsnag-ndk")
+        System.loadLibrary("cxx-scenarios-bugsnag")
+        config.addOnError(
+            OnErrorCallback { event ->
+                Bugsnag.getLastRunInfo()?.let {
+                    event.addMetadata("LastRunInfo", "crashed", it.crashed)
+                    event.addMetadata("LastRunInfo", "crashedDuringLaunch", it.crashedDuringLaunch)
+                    event.addMetadata(
+                        "LastRunInfo",
+                        "consecutiveLaunchCrashes",
+                        it.consecutiveLaunchCrashes
+                    )
+                }
+                true
+            }
+        )
+    }
+
+    external fun crash()
+
+    override fun startScenario() {
+        super.startScenario()
+        val lastRunInfo = Bugsnag.getLastRunInfo()
+
+        // the last run info allows the scenario to escape from what would otherwise be
+        // a crash loop, by conditionally entering a 'safe mode'.
+        if (lastRunInfo?.crashedDuringLaunch == true) {
+            Bugsnag.notify(IllegalArgumentException("Safe mode enabled"))
+        } else {
+            crash()
+        }
+    }
+}

features/full_tests/batch_1/identify_crashes_on_launch.feature

@@ -0,0 +1,17 @@
+Feature: Identifying crashes on launch
+
+    Scenario: Escaping from a crash loop by reading LastRunInfo in a JVM error
+        When I run "JvmCrashLoopScenario" and relaunch the app
+        When I run "JvmCrashLoopScenario"
+        And I wait to receive 2 errors
+        Then the error is valid for the error reporting API version "4.0" for the "Android Bugsnag Notifier" notifier
+        And the exception "message" equals "First crash"
+        And the event "metaData.LastRunInfo.crashed" is null
+        And the event "metaData.LastRunInfo.crashedDuringLaunch" is null
+        And the event "metaData.LastRunInfo.consecutiveLaunchCrashes" is null
+        And I discard the oldest error
+        Then the error is valid for the error reporting API version "4.0" for the "Android Bugsnag Notifier" notifier
+        And the exception "message" equals "Safe mode enabled"
+        And the event "metaData.LastRunInfo.crashed" is true
+        And the event "metaData.LastRunInfo.crashedDuringLaunch" is true
+        And the event "metaData.LastRunInfo.consecutiveLaunchCrashes" equals 1