upload android base code part4

android/cts/tools/cts-preconditions/Android.mk

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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.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+# Don't include this package in any target
+LOCAL_MODULE_TAGS := tests
+# When built, explicitly put it in the data partition.
+LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)
+
+LOCAL_DEX_PREOPT := false
+
+LOCAL_PROGUARD_ENABLED := disabled
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android-support-test \
+    compatibility-device-preconditions \
+    legacy-android-test
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+# Tag this module as a cts test artifact
+LOCAL_COMPATIBILITY_SUITE := cts vts general-tests
+
+LOCAL_PACKAGE_NAME := CtsPreconditions
+
+LOCAL_SDK_VERSION := current
+
+include $(BUILD_PACKAGE)

android/cts/tools/cts-preconditions/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ * 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.
+ -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.preconditions.cts">
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--  self-instrumenting test package. -->
+    <instrumentation
+        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:label="CTS preconditions test"
+        android:targetPackage="com.android.preconditions.cts" >
+    </instrumentation>
+</manifest>

android/cts/tools/cts-preconditions/src/com/android/preconditions/cts/PreconditionsTest.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.preconditions.cts;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.test.AndroidTestCase;
+import android.util.Log;
+
+import com.android.compatibility.common.preconditions.ExternalStorageHelper;
+import com.android.compatibility.common.preconditions.ScreenLockHelper;
+
+/**
+ * A test to verify that device-side preconditions are met for CTS
+ */
+public class PreconditionsTest extends AndroidTestCase {
+
+    private static final String TAG = "PreconditionsTest";
+
+    /**
+     * Test if device has no screen lock
+     * @throws Exception
+     */
+    public void testScreenUnlocked() throws Exception {
+        PackageManager pm = this.getContext().getPackageManager();
+        if (pm.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+                || pm.hasSystemFeature(PackageManager.FEATURE_WATCH)
+                || pm.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE)) {
+            Log.i(TAG, "Skipping screen lock precondition for this device type");
+            return; // do not test for unlocked screen on devices with no screen lock
+        }
+        assertFalse("Device must have screen lock disabled",
+                ScreenLockHelper.isDeviceSecure(this.getContext()));
+    }
+
+    /**
+     * Test if device has accessible external storage
+     * @throws Exception
+     */
+    public void testExternalStoragePresent() throws Exception {
+        assertTrue("Device must have external storage mounted in order to run CTS",
+                ExternalStorageHelper.isExternalStorageReadable());
+        assertTrue("Device external storage must be writable in order to run CTS",
+                ExternalStorageHelper.isExternalStorageWritable());
+    }
+
+}