Added a test for the cold open Camera, then open App scenario. Refactored to use the same resolveInfo for the Camera launcher name and component.

Test: atest FlickerTests:OpenAppAfterCameraTest
Change-Id: I245fab20a81085e421ecb12b5ec94f386114ebd5

tests/FlickerTests/src/com/android/server/wm/flicker/helpers/CameraAppHelper.kt

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2022 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 com.android.server.wm.flicker.helpers
+
+import android.app.Instrumentation
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.content.pm.ResolveInfo
+import android.provider.MediaStore
+import com.android.server.wm.traces.common.ComponentMatcher
+import com.android.server.wm.traces.common.IComponentMatcher
+
+class CameraAppHelper @JvmOverloads constructor(
+        instrumentation: Instrumentation,
+        private val pkgManager: PackageManager = instrumentation.context.packageManager
+) : StandardAppHelper(instrumentation, getCameraLauncherName(pkgManager),
+        getCameraComponent(pkgManager)){
+    companion object{
+        private fun getCameraIntent(): Intent {
+            return Intent(MediaStore.ACTION_IMAGE_CAPTURE)
+        }
+
+        private fun getResolveInfo(pkgManager: PackageManager): ResolveInfo {
+            val intent = getCameraIntent()
+            return pkgManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY)
+                    ?: error("unable to resolve camera activity")
+        }
+
+        private fun getCameraComponent(pkgManager: PackageManager): IComponentMatcher {
+            val resolveInfo = getResolveInfo(pkgManager)
+            return ComponentMatcher(resolveInfo.activityInfo.packageName,
+                    className = resolveInfo.activityInfo.name)
+        }
+
+        private fun getCameraLauncherName(pkgManager: PackageManager): String {
+            val resolveInfo = getResolveInfo(pkgManager)
+            return resolveInfo.activityInfo.name
+        }
+    }
+}

tests/FlickerTests/src/com/android/server/wm/flicker/launch/OpenAppAfterCameraTest.kt

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2022 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 com.android.server.wm.flicker.launch
+
+import android.platform.test.annotations.FlakyTest
+import android.platform.test.annotations.Presubmit
+import android.platform.test.annotations.RequiresDevice
+import com.android.server.wm.flicker.FlickerParametersRunnerFactory
+import com.android.server.wm.flicker.FlickerTestParameter
+import com.android.server.wm.flicker.FlickerTestParameterFactory
+import com.android.server.wm.flicker.annotation.Group1
+import com.android.server.wm.flicker.dsl.FlickerBuilder
+import com.android.server.wm.flicker.helpers.CameraAppHelper
+import org.junit.FixMethodOrder
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.MethodSorters
+import org.junit.runners.Parameterized
+
+/**
+ * Test launching an app after cold opening camera
+ *
+ * To run this test: `atest FlickerTests:OpenAppAfterCameraTest`
+ *
+ * Notes:
+ * Some default assertions are inherited [OpenAppTransition]
+ */
+@RequiresDevice
+@RunWith(Parameterized::class)
+@Parameterized.UseParametersRunnerFactory(FlickerParametersRunnerFactory::class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+@Group1
+open class OpenAppAfterCameraTest(
+    testSpec: FlickerTestParameter
+) : OpenAppFromLauncherTransition(testSpec) {
+    private val cameraApp = CameraAppHelper(instrumentation) /** {@inheritDoc} */
+    override val transition: FlickerBuilder.() -> Unit
+        get() = {
+            super.transition(this)
+            setup {
+                eachRun {
+                    // 1. Open camera - cold -> close it first
+                    cameraApp.exit(wmHelper)
+                    cameraApp.launchViaIntent(wmHelper)
+                    // 2. Press home button (button nav mode) / swipe up to home (gesture nav mode)
+                    tapl.goHome()
+                }
+            }
+            teardown {
+                eachRun {
+                    testApp.exit(wmHelper)
+                }
+            }
+            transitions {
+                testApp.launchViaIntent(wmHelper)
+            }
+        }
+
+    /** {@inheritDoc} */
+    @FlakyTest(bugId = 206753786)
+    @Test
+    override fun navBarLayerPositionAtStartAndEnd() = super.navBarLayerPositionAtStartAndEnd()
+
+    /** {@inheritDoc} */
+    @Presubmit
+    @Test
+    override fun appLayerReplacesLauncher() = super.appLayerReplacesLauncher()
+
+    companion object {
+        /**
+         * Creates the test configurations.
+         *
+         * See [FlickerTestParameterFactory.getConfigNonRotationTests] for configuring
+         * repetitions, screen orientation and navigation modes.
+         */
+        @Parameterized.Parameters(name = "{0}")
+        @JvmStatic
+        fun getParams(): Collection<FlickerTestParameter> {
+            return FlickerTestParameterFactory.getInstance()
+                    .getConfigNonRotationTests()
+        }
+    }
+}