Add ViewConfigurationPerfTest

Created two simple benchmark tests to measure performance of
ViewConfiguration#get.

Bug: 299587011
Test: atest ViewConfigurationPerfTest

Change-Id: If502a4acb6bc6080af134675e610a76df59c538a

1 files changed, 61 insertions, 0 deletions

diff --git a/apct-tests/perftests/core/src/android/view/ViewConfigurationPerfTest.java b/apct-tests/perftests/core/src/android/view/ViewConfigurationPerfTest.java
new file mode 100644
index 000000000000..7a7250b9e910
--- /dev/null
+++ b/apct-tests/perftests/core/src/android/view/ViewConfigurationPerfTest.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2023 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 android.view;
+
+import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;
+
+import android.content.Context;
+
+import androidx.benchmark.BenchmarkState;
+import androidx.benchmark.junit4.BenchmarkRule;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Rule;
+import org.junit.Test;
+
+@SmallTest
+public class ViewConfigurationPerfTest {
+    @Rule
+    public final BenchmarkRule mBenchmarkRule = new BenchmarkRule();
+
+    private final Context mContext = getInstrumentation().getTargetContext();
+
+    @Test
+    public void testGet_newViewConfiguration() {
+        final BenchmarkState state = mBenchmarkRule.getState();
+
+        while (state.keepRunning()) {
+            state.pauseTiming();
+            // Reset cache so that `ViewConfiguration#get` creates a new instance.
+            ViewConfiguration.resetCacheForTesting();
+            state.resumeTiming();
+
+            ViewConfiguration.get(mContext);
+        }
+    }
+
+    @Test
+    public void testGet_cachedViewConfiguration() {
+        final BenchmarkState state = mBenchmarkRule.getState();
+        // Do `get` once to make sure there's something cached.
+        ViewConfiguration.get(mContext);
+
+        while (state.keepRunning()) {
+            ViewConfiguration.get(mContext);
+        }
+    }
+}