1 files changed, 53 insertions, 0 deletions
diff --git a/javatests/com/android/loganalysis/item/BatteryUsageItemTest.java b/javatests/com/android/loganalysis/item/BatteryUsageItemTest.java
new file mode 100644
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--- /dev/null
+++ b/javatests/com/android/loganalysis/item/BatteryUsageItemTest.java
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+/*
+ * 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 com.android.loganalysis.item;
+
+import com.android.loganalysis.item.BatteryUsageItem.BatteryUsageInfoItem;
+
+import junit.framework.TestCase;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * Unit test for {@link BatteryUsageItem}.
+ */
+public class BatteryUsageItemTest extends TestCase {
+
+    /**
+     * Test that {@link BatteryUsageItem#toJson()} returns correctly.
+     */
+    public void testToJson() throws JSONException {
+        BatteryUsageItem item = new BatteryUsageItem();
+        item.addBatteryUsage("Cell standby", 2925);
+        item.addBatteryUsage("Uid u0a71", 68.1);
+        // Convert to JSON string and back again
+        JSONObject output = new JSONObject(item.toJson().toString());
+
+        assertTrue(output.has(BatteryUsageItem.BATTERY_CAPACITY));
+        assertTrue(output.get(BatteryUsageItem.BATTERY_USAGE) instanceof JSONArray);
+
+        JSONArray usage = output.getJSONArray(BatteryUsageItem.BATTERY_USAGE);
+
+        assertEquals(2, usage.length());
+        assertTrue(usage.getJSONObject(0).has(BatteryUsageInfoItem.NAME));
+        assertTrue(usage.getJSONObject(0).has(BatteryUsageInfoItem.USAGE));
+
+        assertTrue(usage.getJSONObject(1).has(BatteryUsageInfoItem.NAME));
+        assertTrue(usage.getJSONObject(1).has(BatteryUsageInfoItem.USAGE));
+    }
+}