PhoneStatusBar: Add test for executeRunnableDismissingKeyguard with null runnable

Adds a regression test for NPEs around executeRunnableDismissingKeyguard when
a null runnable is passed.

The bug was fixed in I89477a8a0067e285e5d0122e918fac45274c57ad.

Fixes: 33489225
Test: runtest systemui
Change-Id: Ia8981bc4c2a1a0f6d8c48e6d66e2af801d6cddac

packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/PhoneStatusBarTest.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2017 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.systemui.statusbar.phone;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyBoolean;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.android.keyguard.KeyguardHostView.OnDismissAction;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.statusbar.BaseStatusBar;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class PhoneStatusBarTest extends SysuiTestCase {
+
+    StatusBarKeyguardViewManager mStatusBarKeyguardViewManager;
+    PhoneStatusBar mPhoneStatusBar;
+
+    @Before
+    public void setup() {
+        mStatusBarKeyguardViewManager = mock(StatusBarKeyguardViewManager.class);
+        mPhoneStatusBar = new TestablePhoneStatusBar(mStatusBarKeyguardViewManager);
+
+        doAnswer(invocation -> {
+            OnDismissAction onDismissAction = (OnDismissAction) invocation.getArguments()[0];
+            onDismissAction.onDismiss();
+            return null;
+        }).when(mStatusBarKeyguardViewManager).dismissWithAction(any(), any(), anyBoolean());
+
+        doAnswer(invocation -> {
+            Runnable runnable = (Runnable) invocation.getArguments()[0];
+            runnable.run();
+            return null;
+        }).when(mStatusBarKeyguardViewManager).addAfterKeyguardGoneRunnable(any());
+    }
+
+    @Test
+    public void executeRunnableDismissingKeyguard_nullRunnable_showingAndOccluded() {
+        when(mStatusBarKeyguardViewManager.isShowing()).thenReturn(true);
+        when(mStatusBarKeyguardViewManager.isOccluded()).thenReturn(true);
+
+        mPhoneStatusBar.executeRunnableDismissingKeyguard(null, null, false, false, false);
+    }
+
+    @Test
+    public void executeRunnableDismissingKeyguard_nullRunnable_showing() {
+        when(mStatusBarKeyguardViewManager.isShowing()).thenReturn(true);
+        when(mStatusBarKeyguardViewManager.isOccluded()).thenReturn(false);
+
+        mPhoneStatusBar.executeRunnableDismissingKeyguard(null, null, false, false, false);
+    }
+
+    @Test
+    public void executeRunnableDismissingKeyguard_nullRunnable_notShowing() {
+        when(mStatusBarKeyguardViewManager.isShowing()).thenReturn(false);
+        when(mStatusBarKeyguardViewManager.isOccluded()).thenReturn(false);
+
+        mPhoneStatusBar.executeRunnableDismissingKeyguard(null, null, false, false, false);
+    }
+
+    static class TestablePhoneStatusBar extends PhoneStatusBar {
+        public TestablePhoneStatusBar(StatusBarKeyguardViewManager man) {
+            mStatusBarKeyguardViewManager = man;
+        }
+
+        @Override
+        protected BaseStatusBar.H createHandler() {
+            return null;
+        }
+    }
+}