Adding History of Location Requests to Dumpsys

Bug: 141716920
Test: m -j ROBOTEST_FILTER=LocationRequestStatisticsTest RunFrameworksServicesRoboTests
Test: On device verified history
Change-Id: Ia862e64415ef6132422ea3b2f1a22197e9b44c44

1 files changed, 74 insertions, 0 deletions

diff --git a/services/robotests/src/com/android/server/location/LocationRequestStatisticsTest.java b/services/robotests/src/com/android/server/location/LocationRequestStatisticsTest.java
new file mode 100644
index 000000000000..4cbdbd178944
--- /dev/null
+++ b/services/robotests/src/com/android/server/location/LocationRequestStatisticsTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2020 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.location;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.platform.test.annotations.Presubmit;
+
+import com.android.internal.util.IndentingPrintWriter;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+/**
+ * Unit tests for {@link LocationRequestStatistics}.
+ */
+@RunWith(RobolectricTestRunner.class)
+@Presubmit
+public class LocationRequestStatisticsTest {
+
+    /**
+     * Check adding and removing requests & strings
+     */
+    @Test
+    public void testRequestSummary() {
+        LocationRequestStatistics.RequestSummary summary =
+                new LocationRequestStatistics.RequestSummary(
+                "com.example", "gps", 1000);
+        StringWriter stringWriter = new StringWriter();
+        summary.dump(new IndentingPrintWriter(new PrintWriter(stringWriter), "  "), 1234);
+        assertThat(stringWriter.toString()).startsWith("At");
+
+        StringWriter stringWriterRemove = new StringWriter();
+        summary = new LocationRequestStatistics.RequestSummary(
+                "com.example", "gps",
+                LocationRequestStatistics.RequestSummary.REQUEST_ENDED_INTERVAL);
+        summary.dump(new IndentingPrintWriter(new PrintWriter(stringWriterRemove), "  "), 2345);
+        assertThat(stringWriterRemove.toString()).contains("-");
+    }
+
+    /**
+     * Check summary list size capping
+     */
+    @Test
+    public void testSummaryList() {
+        LocationRequestStatistics statistics = new LocationRequestStatistics();
+        statistics.history.addRequest("com.example", "gps", 1000);
+        assertThat(statistics.history.mList.size()).isEqualTo(1);
+        // Try (not) to overflow
+        for (int i = 0; i < LocationRequestStatistics.RequestSummaryLimitedHistory.MAX_SIZE; i++) {
+            statistics.history.addRequest("com.example", "gps", 1000);
+        }
+        assertThat(statistics.history.mList.size()).isEqualTo(
+                LocationRequestStatistics.RequestSummaryLimitedHistory.MAX_SIZE);
+    }
+}