Add a test project with a single manifest merging error.

This is used in ManifestPanelContentTest to assert the current
behaviour of the manifest panel to prepare it for more substantial
changes.

Here is a screenshot for the current output for the erroneous project:
https://screenshot.googleplex.com/6uU6ai7GkrxbfAK

Bug: 230452643
Test: Added testProject_withErrors_simpleApplicationMissingExport to
ManifestPanelContentTest
Change-Id: Ie88770c9aa324d84c81bb393b8f9ba84aed31efc

Change-Id: Ie7accab023c3cf7706823223b84978cb5a04ff90

31 files changed, 541 insertions, 17 deletions

diff --git a/android-test-framework/testSrc/com/android/tools/idea/testing/TestProjectPaths.java b/android-test-framework/testSrc/com/android/tools/idea/testing/TestProjectPaths.java
index 6d2940a5918..ab86e816bbe 100644
--- a/android-test-framework/testSrc/com/android/tools/idea/testing/TestProjectPaths.java
+++ b/android-test-framework/testSrc/com/android/tools/idea/testing/TestProjectPaths.java
@@ -118,4 +118,6 @@ public final class TestProjectPaths {
   public static final String UNUSED_RESOURCES_GROOVY = "projects/unusedResources";
   public static final String UNUSED_RESOURCES_KTS = "projects/unusedResourcesKotlin";
   public static final String UNUSED_RESOURCES_MULTI_MODULE = "projects/unusedResourcesMultiModule";
+
+  public static final String WITH_ERRORS_SIMPLE_APPLICATION_MISSING_EXPORT = "projects/withErrors/simpleApplicationMissingExport";
 }
diff --git a/android/testData/projects/navigationEditor/includeFromLib/snapshots/contentForNavigationEditor_includeFromLib_manifest_report.html.txt b/android/testData/projects/navigationEditor/includeFromLib/snapshots/project_navigationEditor_includeFromLib_manifest_report.html.txt
index 4a16a1ad4ba..4a16a1ad4ba 100644
--- a/android/testData/projects/navigationEditor/includeFromLib/snapshots/contentForNavigationEditor_includeFromLib_manifest_report.html.txt
+++ b/android/testData/projects/navigationEditor/includeFromLib/snapshots/project_navigationEditor_includeFromLib_manifest_report.html.txt
diff --git a/android/testData/projects/navigationEditor/includeFromLib/snapshots/contentForNavigationEditor_includeFromLib_merged_manifest.xml.txt b/android/testData/projects/navigationEditor/includeFromLib/snapshots/project_navigationEditor_includeFromLib_merged_manifest.xml.txt
index c88de41766e..c88de41766e 100644
--- a/android/testData/projects/navigationEditor/includeFromLib/snapshots/contentForNavigationEditor_includeFromLib_merged_manifest.xml.txt
+++ b/android/testData/projects/navigationEditor/includeFromLib/snapshots/project_navigationEditor_includeFromLib_merged_manifest.xml.txt
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/.gitignore b/android/testData/projects/withErrors/simpleApplicationMissingExport/.gitignore
new file mode 100644
index 00000000000..49e18267fc8
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/.gitignore
@@ -0,0 +1,17 @@
+.gradle
+/gradle
+/local.properties
+/.idea/copyright
+/.idea/scopes
+/.idea/libraries
+/.idea/compiler.xml
+/.idea/encodings.xml
+/.idea/gradle.xml
+/.idea/misc.xml
+/.idea/vcs.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+gradlew
+gradlew.bat
+../../snapshots/projects/simpleApplication/gradle.properties
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/.gitignore b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/.gitignore
new file mode 100644
index 00000000000..796b96d1c40
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/build.gradle b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/build.gradle
new file mode 100644
index 00000000000..ab87c889463
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/build.gradle
@@ -0,0 +1,34 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
+    useLibrary 'org.apache.http.legacy'
+
+    defaultConfig {
+        applicationId "google.simpleapplication"
+        minSdkVersion 19
+        targetSdkVersion 23
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    lintOptions {
+        abortOnError false
+    }
+}
+
+dependencies {
+    api fileTree(dir: 'libs', include: ['*.jar'])
+    api 'com.android.support:appcompat-v7:+'
+    api 'com.google.guava:guava:19.0'
+    api 'com.android.support.constraint:constraint-layout:1.0.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:+'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:+'
+}
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/proguard-rules.pro b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/proguard-rules.pro
new file mode 100644
index 00000000000..e2f6a3ded07
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/proguard-rules.pro
@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Applications/adt-bundle-mac-x86_64-20131030/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/androidTest/java/google/simpleapplication/ApplicationTest.java b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/androidTest/java/google/simpleapplication/ApplicationTest.java
new file mode 100644
index 00000000000..0b16c57ceca
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/androidTest/java/google/simpleapplication/ApplicationTest.java
@@ -0,0 +1,15 @@
+package google.simpleapplication;
+
+import android.support.test.runner.AndroidJUnit4;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ApplicationTest {
+    @Test
+    public void exampleTest() {
+    }
+}
\ No newline at end of file
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/AndroidManifest.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000000..77ffec64cf7
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/AndroidManifest.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="google.simpleapplication" >
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MyActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/java/google/simpleapplication/MyActivity.java b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/java/google/simpleapplication/MyActivity.java
new file mode 100644
index 00000000000..490b137b4d3
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/java/google/simpleapplication/MyActivity.java
@@ -0,0 +1,36 @@
+package google.simpleapplication;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+
+
+public class MyActivity extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_my);
+    }
+
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.my, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+        if (id == R.id.action_settings) {
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/drawable/ic_launcher.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/drawable/ic_launcher.xml
new file mode 100644
index 00000000000..bebd9834a0e
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/drawable/ic_launcher.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<color xmlns:android="http://schemas.android.com/apk/res/android" android:color="#ff0000" />
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/absolute.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/absolute.xml
new file mode 100644
index 00000000000..a4c567ae912
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/absolute.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
+    android:layout_width="match_parent" android:layout_height="match_parent">
+
+    <Button
+        android:text="Button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_x="3dp"
+        android:layout_y="2dp"
+        android:id="@+id/button" />
+
+    <Button
+        android:text="Button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_x="6dp"
+        android:layout_y="50dp"
+        android:id="@+id/button2" />
+
+    <EditText
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:inputType="textPersonName"
+        android:text="Name"
+        android:ems="10"
+        android:layout_x="108dp"
+        android:layout_y="206dp"
+        android:id="@+id/editText" />
+
+    <LinearLayout
+        android:layout_width="359dp"
+        android:layout_height="89dp"
+        android:layout_x="17dp"
+        android:layout_y="416dp">
+
+        <Button
+            android:text="Button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/button3"
+            android:layout_weight="1" />
+
+        <Button
+            android:text="Button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/button5"
+            android:layout_weight="1" />
+
+        <Button
+            android:text="Button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/button6"
+            android:layout_weight="1" />
+    </LinearLayout>
+</AbsoluteLayout>
+
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/activity_my.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/activity_my.xml
new file mode 100644
index 00000000000..c17166f4d34
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/activity_my.xml
@@ -0,0 +1,16 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".MyActivity">
+
+    <TextView
+        android:text="@string/hello_world"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+</RelativeLayout>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/frames.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/frames.xml
new file mode 100644
index 00000000000..985fa0ccf9b
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/layout/frames.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Welcome"  />
+
+    <FrameLayout
+        android:id="@+id/attending_remotely"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:foreground="?android:selectableItemBackground">
+
+        <ImageView
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            android:adjustViewBounds="true"
+            android:scaleType="centerInside" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end|right"
+            android:text="Remotely" />
+
+    </FrameLayout>
+
+    <FrameLayout
+        android:id="@+id/attending_in_person"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:foreground="?android:selectableItemBackground">
+
+        <ImageView
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            android:adjustViewBounds="true"
+            android:scaleType="centerInside" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end|right"
+            android:text="In Person" />
+
+    </FrameLayout>
+
+</LinearLayout>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/menu/my.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/menu/my.xml
new file mode 100644
index 00000000000..bea58cc00be
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/menu/my.xml
@@ -0,0 +1,8 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context=".MyActivity" >
+    <item android:id="@+id/action_settings"
+        android:title="@string/action_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never" />
+</menu>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en-rGB/strings.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en-rGB/strings.xml
new file mode 100644
index 00000000000..35986fa7193
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en-rGB/strings.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 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.
+  -->
+<resources>
+
+    <string name="app_name">Simple Application</string>
+    <string name="hello_world">Hello world!</string>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en/strings.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en/strings.xml
new file mode 100644
index 00000000000..d13ac5fc81f
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-en/strings.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">Simple Application</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-ta/strings.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-ta/strings.xml
new file mode 100644
index 00000000000..d13ac5fc81f
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-ta/strings.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">Simple Application</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v19/styles.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v19/styles.xml
new file mode 100644
index 00000000000..de742ebe7e4
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v19/styles.xml
@@ -0,0 +1,6 @@
+<resources>
+
+    <style name="PreviewTheme" parent="android:Theme.Holo">
+    </style>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v20/styles.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v20/styles.xml
new file mode 100644
index 00000000000..de742ebe7e4
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-v20/styles.xml
@@ -0,0 +1,6 @@
+<resources>
+
+    <style name="PreviewTheme" parent="android:Theme.Holo">
+    </style>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-w820dp/dimens.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-w820dp/dimens.xml
new file mode 100644
index 00000000000..63fc8164446
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-w820dp/dimens.xml
@@ -0,0 +1,6 @@
+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-zh-rCN/strings.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-zh-rCN/strings.xml
new file mode 100644
index 00000000000..100d85e9da1
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values-zh-rCN/strings.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 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.
+  -->
+<resources>
+    <string name="app_name">谷歌 I/O</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+    <string name="cancel">取消</string>
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/dimens.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/dimens.xml
new file mode 100644
index 00000000000..47c82246738
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/strings.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000000..d13ac5fc81f
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/strings.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">Simple Application</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/styles.xml b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/styles.xml
new file mode 100644
index 00000000000..fdc045eccfd
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/main/res/values/styles.xml
@@ -0,0 +1,13 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+    </style>
+
+    <style name="PreviewTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+    </style>
+
+    <style name="NotATheme">
+    </style>
+</resources>
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/test/java/google/simpleapplication/UnitTest.java b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/test/java/google/simpleapplication/UnitTest.java
new file mode 100644
index 00000000000..767acad98f6
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/app/src/test/java/google/simpleapplication/UnitTest.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015 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 google.simpleapplication;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.lang.Deprecated;
+
+/**
+ * A unit test to be executed on the local vm.
+ */
+public class UnitTest {
+  @Test
+  public void passingTest() throws Exception {
+    Assert.assertEquals(2, 1 + 1);
+  }
+
+  @Test
+  public void failingTest() throws Exception {
+    Assert.assertEquals(5, 2 + 2);
+  }
+}
\ No newline at end of file
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/build.gradle b/android/testData/projects/withErrors/simpleApplicationMissingExport/build.gradle
new file mode 100644
index 00000000000..77e021b94c1
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/build.gradle
@@ -0,0 +1,21 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    repositories {
+        // This will be populated by AndroidGradleTestCase
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.5.0'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        // This will be populated by AndroidGradleTestCase
+    }
+}
+
+println("This is a simple application!")
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/settings.gradle b/android/testData/projects/withErrors/simpleApplicationMissingExport/settings.gradle
new file mode 100644
index 00000000000..e7b4def49cb
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/settings.gradle
@@ -0,0 +1 @@
+include ':app'
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_manifest_report.html.txt b/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_manifest_report.html.txt
new file mode 100644
index 00000000000..3a30c62847a
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_manifest_report.html.txt
@@ -0,0 +1,58 @@
+<html>
+  <head>
+  </head>
+  <body>
+    <u><b>Manifest Sources</b></u><br>
+    <table border="0">
+      <tr>
+        <td width="24" height="24" style="background-color: #ffffff; border-top-color: #808080; border-top-style: solid; border-top-width: 1px; border-right-color: #808080; border-right-style: solid; border-right-width: 1px; border-bottom-color: #808080; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #808080; border-left-style: solid; border-left-width: 1px">
+        </td>
+        <td>
+          <a href='<PROJECT_DIR>/app/src/main/AndroidManifest.xml'>project.app
+          main</a> manifest (this file)
+        </td>
+      </tr>
+    </table>
+    <br>
+    <u><b>Other Manifest Files</b></u><br>(Included in merge, but did not
+    contribute any elements)<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/animated-vector-drawable-28.0.0/AndroidManifest.xml'>animated-vector-drawable:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/appcompat-v7-28.0.0/AndroidManifest.xml'>appcompat-v7:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/constraint-layout-1.0.2/AndroidManifest.xml'>constraint-layout:1.0.2</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/runtime-1.1.1/AndroidManifest.xml'>core:runtime:1.1.1</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/livedata-1.1.1/AndroidManifest.xml'>lifecycle:livedata:1.1.1</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/runtime-1.1.1/AndroidManifest.xml'>lifecycle:runtime:1.1.1</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/viewmodel-1.1.1/AndroidManifest.xml'>lifecycle:viewmodel:1.1.1</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/livedata-core-1.1.1/AndroidManifest.xml'>livedata-core:1.1.1</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-compat-28.0.0/AndroidManifest.xml'>support-compat:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-core-ui-28.0.0/AndroidManifest.xml'>support-core-ui:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-core-utils-28.0.0/AndroidManifest.xml'>support-core-utils:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-fragment-28.0.0/AndroidManifest.xml'>support-fragment:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-vector-drawable-28.0.0/AndroidManifest.xml'>support-vector-drawable:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/asynclayoutinflater-28.0.0/AndroidManifest.xml'>support:asynclayoutinflater:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/coordinatorlayout-28.0.0/AndroidManifest.xml'>support:coordinatorlayout:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/cursoradapter-28.0.0/AndroidManifest.xml'>support:cursoradapter:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/customview-28.0.0/AndroidManifest.xml'>support:customview:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/documentfile-28.0.0/AndroidManifest.xml'>support:documentfile:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/drawerlayout-28.0.0/AndroidManifest.xml'>support:drawerlayout:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/interpolator-28.0.0/AndroidManifest.xml'>support:interpolator:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/loader-28.0.0/AndroidManifest.xml'>support:loader:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/localbroadcastmanager-28.0.0/AndroidManifest.xml'>support:localbroadcastmanager:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/print-28.0.0/AndroidManifest.xml'>support:print:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/slidingpanelayout-28.0.0/AndroidManifest.xml'>support:slidingpanelayout:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/swiperefreshlayout-28.0.0/AndroidManifest.xml'>support:swiperefreshlayout:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/versionedparcelable-28.0.0/AndroidManifest.xml'>support:versionedparcelable:28.0.0</a>
+    manifest<br><a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/viewpager-28.0.0/AndroidManifest.xml'>support:viewpager:28.0.0</a>
+    manifest<br><br><br>Merging Errors:<br>Warning Namespace
+    'android.support.graphics.drawable' used in: AndroidManifest.xml,
+    AndroidManifest.xml. <a href='<GRADLE>/caches/transforms-3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/transformed/support-vector-drawable-28.0.0/AndroidManifest.xml'>support-vector-drawable:28.0.0</a>
+    manifest<br><font color="#ff0000"><b>Error</b></font>: android:exported
+    needs to be explicitly specified for element
+    &lt;activity#google.simpleapplication.MyActivity&gt;. Apps targeting Android 12
+    and higher are required to specify an explicit value for
+    `android:exported` when the corresponding component has an intent filter
+    defined. See
+    https://developer.android.com/guide/topics/manifest/activity-element#exported
+    for details. <a href='<PROJECT_DIR>/app/src/main/AndroidManifest.xml:9:8'>project.app
+    main</a> manifest (this file), line 9<br>
+  </body>
+</html>
\ No newline at end of file
diff --git a/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_merged_manifest.xml.txt b/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_merged_manifest.xml.txt
new file mode 100644
index 00000000000..b2ec84759ac
--- /dev/null
+++ b/android/testData/projects/withErrors/simpleApplicationMissingExport/snapshots/project_withErrors_simpleApplicationMissingExport_merged_manifest.xml.txt
@@ -0,0 +1 @@
+Pane content is empty
\ No newline at end of file
diff --git a/android/testSrc/com/android/tools/idea/editors/manifest/ManifestPanelContentTest.kt b/android/testSrc/com/android/tools/idea/editors/manifest/ManifestPanelContentTest.kt
index aaefd62a0c8..d6eb16168a7 100644
--- a/android/testSrc/com/android/tools/idea/editors/manifest/ManifestPanelContentTest.kt
+++ b/android/testSrc/com/android/tools/idea/editors/manifest/ManifestPanelContentTest.kt
@@ -25,7 +25,6 @@ import com.android.tools.idea.testing.GradleIntegrationTest
 import com.android.tools.idea.testing.SnapshotComparisonTest
 import com.android.tools.idea.testing.TestProjectPaths
 import com.android.tools.idea.testing.assertAreEqualToSnapshots
-import com.android.tools.idea.testing.assertIsEqualToSnapshot
 import com.android.tools.idea.testing.gradleModule
 import com.android.tools.idea.testing.onEdt
 import com.android.tools.idea.testing.openPreparedProject
@@ -42,6 +41,7 @@ import java.io.File
 import java.nio.file.Paths
 import java.util.concurrent.TimeUnit
 import java.io.StringWriter
+import javax.swing.tree.TreeModel
 import javax.xml.transform.OutputKeys
 import javax.xml.transform.TransformerFactory
 import javax.xml.transform.dom.DOMSource
@@ -63,17 +63,25 @@ class ManifestPanelContentTest : GradleIntegrationTest, SnapshotComparisonTest {
   override fun getTestDataDirectoryWorkspaceRelativePath(): String = "tools/adt/idea/android/testData"
   override fun getAdditionalRepos(): Collection<File> = listOf()
 
-  override val snapshotDirectoryWorkspaceRelativePath = Paths
-    .get(getTestDataDirectoryWorkspaceRelativePath())
-    .resolve(TestProjectPaths.NAVIGATION_EDITOR_INCLUDE_FROM_LIB)
-    .resolve("snapshots")
-    .toString()
+  override lateinit var snapshotDirectoryWorkspaceRelativePath: String
 
   override fun getName(): String = testName.methodName
 
   @Test
-  fun contentForNavigationEditor_includeFromLib() {
-    val projectPath = TestProjectPaths.NAVIGATION_EDITOR_INCLUDE_FROM_LIB
+  fun testProject_navigationEditor_includeFromLib() {
+    testProject(TestProjectPaths.NAVIGATION_EDITOR_INCLUDE_FROM_LIB)
+  }
+  @Test
+  fun testProject_withErrors_simpleApplicationMissingExport() {
+    testProject(TestProjectPaths.WITH_ERRORS_SIMPLE_APPLICATION_MISSING_EXPORT)
+  }
+
+  private fun testProject(projectPath : String) {
+    snapshotDirectoryWorkspaceRelativePath = Paths
+      .get(getTestDataDirectoryWorkspaceRelativePath())
+      .resolve(projectPath)
+      .resolve("snapshots")
+      .toString()
     val projectRoot = prepareGradleProject(projectPath, "project")
     openPreparedProject("project") { project ->
       val appModule = project.gradleModule(":app")?.getMainModule() ?: error("Cannot find :app module")
@@ -84,7 +92,8 @@ class ManifestPanelContentTest : GradleIntegrationTest, SnapshotComparisonTest {
       val panel = ManifestPanel(appModuleFacet, projectRule.testRootDisposable)
       panel.showManifest(mergedManifest, appModuleFacet.sourceProviders.mainManifestFile!!, false)
       val detailsPaneContent = panel.detailsPane.text
-      val manifestPaneContent = (panel.tree.model.root as ManifestTreeNode).userObject.transformToString()
+      val model: TreeModel? = panel.tree.model
+      val manifestPaneContent: String? = model?.transformToString()
 
       ProjectDumper().nest(projectRoot, "PROJECT_DIR") {
         assertAreEqualToSnapshots(
@@ -96,7 +105,8 @@ class ManifestPanelContentTest : GradleIntegrationTest, SnapshotComparisonTest {
   }
 
   /* Goes through each line, removing empty lines and replacing hyperlinks with files with stable naming across different config/runs. */
-  private fun ProjectDumper.normalizeContentForTest(htmlString: String) = htmlString
+  private fun ProjectDumper.normalizeContentForTest(htmlString: String?) = htmlString
+    .let { it ?: "Pane content is empty" }
     .lines()
     .filter { it.trim().isNotEmpty() }
     .joinToString(separator = "\n", postfix = "\n") {
@@ -119,12 +129,16 @@ class ManifestPanelContentTest : GradleIntegrationTest, SnapshotComparisonTest {
     return fileAndPosition.substring(0, suffixPosition) to fileAndPosition.substring(suffixPosition, fileAndPosition.length)
   }
 
-  private fun Node.transformToString() =
-    StringWriter().let {
-      TransformerFactory.newInstance().newTransformer().apply {
-        setOutputProperty(OutputKeys.INDENT, "yes")
-        setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
-      }.transform(DOMSource(this), StreamResult(it))
-      it.buffer.toString()
+  private fun TreeModel?.transformToString() : String? =
+    if (this == null) {
+      null
+    } else {
+      StringWriter().let {
+        TransformerFactory.newInstance().newTransformer().apply {
+          setOutputProperty(OutputKeys.INDENT, "yes")
+          setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
+        }.transform(DOMSource((this.root as ManifestTreeNode).userObject), StreamResult(it))
+        it.buffer.toString()
+      }
     }
 }
\ No newline at end of file