Make Serial number preference a copyable slice.

Fixes: 73769621
Test: robotests
Change-Id: Ic20d8865bc26c1acc7db74e665f92fe388d62f74

tests/robotests/src/com/android/settings/deviceinfo/hardwareinfo/SerialNumberPreferenceControllerTest.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.hardwareinfo;
+
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Context;
+import android.os.Build;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class SerialNumberPreferenceControllerTest {
+
+    private Context mContext;
+    private SerialNumberPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mController = new SerialNumberPreferenceController(mContext, "test");
+    }
+
+    @Test
+    public void isCopyableSlice() {
+        assertThat(mController.isSliceable()).isTrue();
+        assertThat(mController.isCopyableSlice()).isTrue();
+    }
+
+    @Test
+    public void copy_shouldPutSerialNumberToClipBoard() {
+        mController.copy();
+
+        final ClipboardManager clipboardManager = mContext.getSystemService(ClipboardManager.class);
+        final ClipData data = clipboardManager.getPrimaryClip();
+
+        assertThat(data.getItemAt(0).getText().toString()).contains(Build.getSerial());
+    }
+}