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/*
* Copyright (C) 2017 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.rs.unittest;
import android.content.Context;
import android.renderscript.RenderScript;
import android.renderscript.RenderScript.RSMessageHandler;
import android.support.test.InstrumentationRegistry;
import android.util.Log;
import dalvik.system.DexFile;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
public abstract class UnitTest {
public enum UnitTestResult {
UT_NOT_STARTED,
UT_RUNNING,
UT_SUCCESS,
UT_FAIL,
}
private final static String TAG = "RSUnitTest";
private String mName;
private UnitTestResult mResult;
private Context mCtx;
/* Necessary to avoid race condition on pass/fail message. */
private CountDownLatch mCountDownLatch;
/* These constants must match those in shared.rsh */
public static final int RS_MSG_TEST_PASSED = 100;
public static final int RS_MSG_TEST_FAILED = 101;
public UnitTest(String n, Context ctx) {
mName = n;
mCtx = ctx;
mResult = UnitTestResult.UT_NOT_STARTED;
mCountDownLatch = null;
}
protected void _RS_ASSERT(String message, boolean b) {
if (!b) {
Log.e(TAG, message + " FAILED");
failTest();
}
}
/**
* Returns a RenderScript instance created from mCtx.
*
* @param enableMessages
* true if expecting exactly one pass/fail message from the RenderScript instance.
* false if no messages expected.
* Any other messages are not supported.
*/
protected RenderScript createRenderScript(boolean enableMessages) {
RenderScript rs = RenderScript.create(mCtx);
if (enableMessages) {
RSMessageHandler handler = new RSMessageHandler() {
public void run() {
switch (mID) {
case RS_MSG_TEST_PASSED:
passTest();
break;
case RS_MSG_TEST_FAILED:
failTest();
break;
default:
Log.w(TAG, String.format("Unit test %s got unexpected message %d",
UnitTest.this.toString(), mID));
break;
}
mCountDownLatch.countDown();
}
};
rs.setMessageHandler(handler);
mCountDownLatch = new CountDownLatch(1);
}
return rs;
}
protected synchronized void failTest() {
mResult = UnitTestResult.UT_FAIL;
}
protected synchronized void passTest() {
if (mResult != UnitTestResult.UT_FAIL) {
mResult = UnitTestResult.UT_SUCCESS;
}
}
public UnitTestResult getResult() {
return mResult;
}
public boolean getSuccess() {
return mResult == UnitTestResult.UT_SUCCESS;
}
public void runTest() {
mResult = UnitTestResult.UT_RUNNING;
run();
if (mCountDownLatch != null) {
try {
boolean success = mCountDownLatch.await(5 * 60, TimeUnit.SECONDS);
if (!success) {
failTest();
Log.e(TAG, String.format("Unit test %s waited too long for pass/fail message",
toString()));
}
} catch (InterruptedException e) {
failTest();
Log.e(TAG, String.format("Unit test %s raised InterruptedException when " +
"listening for pass/fail message", toString()));
}
}
switch (mResult) {
case UT_NOT_STARTED:
case UT_RUNNING:
Log.w(TAG, String.format("unexpected unit test result for test %s: %s",
this.toString(), mResult.toString()));
break;
}
}
abstract protected void run();
@Override
public String toString() {
return mName;
}
/**
* Throws RuntimeException if any tests have the same name.
*/
public static void checkDuplicateNames(Iterable<UnitTest> tests) {
Set<String> names = new HashSet<>();
List<String> duplicates = new ArrayList<>();
for (UnitTest test : tests) {
String name = test.toString();
if (names.contains(name)) {
duplicates.add(name);
}
names.add(name);
}
if (!duplicates.isEmpty()) {
throw new RuntimeException("duplicate name(s): " + duplicates);
}
}
public static Iterable<Class<? extends UnitTest>> getProperSubclasses(Context ctx)
throws ClassNotFoundException, IOException {
return getProperSubclasses(UnitTest.class, ctx);
}
/** Returns a list of all proper subclasses of the input class */
private static <T> Iterable<Class<? extends T>> getProperSubclasses(Class<T> klass, Context ctx)
throws ClassNotFoundException, IOException {
ArrayList<Class<? extends T>> ret = new ArrayList<>();
DexFile df = new DexFile(ctx.getPackageCodePath());
Enumeration<String> iter = df.entries();
while (iter.hasMoreElements()) {
String s = iter.nextElement();
Class<?> cur = Class.forName(s);
while (cur != null) {
if (cur.getSuperclass() == klass) {
break;
}
cur = cur.getSuperclass();
}
if (cur != null) {
ret.add((Class<? extends T>) cur);
}
}
return ret;
}
}
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