common/host-side/tradefed/tests/src/com/android/compatibility/common/tradefed/presubmit/CtsConfigLoadingTest.java

/*
 * 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.compatibility.common.tradefed.presubmit;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import com.android.compatibility.common.tradefed.build.CompatibilityBuildHelper;
import com.android.compatibility.common.tradefed.targetprep.ApkInstaller;
import com.android.tradefed.build.FolderBuildInfo;
import com.android.tradefed.config.ConfigurationException;
import com.android.tradefed.config.ConfigurationFactory;
import com.android.tradefed.config.IConfiguration;
import com.android.tradefed.targetprep.ITargetPreparer;
import com.android.tradefed.testtype.HostTest;
import com.android.tradefed.testtype.IRemoteTest;

import org.junit.Test;

import java.io.File;
import java.io.FilenameFilter;

/**
 * Test that configuration in CTS can load and have expected properties.
 */
public class CtsConfigLoadingTest {

    /**
     * Test that configuration shipped in Tradefed can be parsed.
     * -> Exclude deprecated ApkInstaller.
     * -> Check if host-side tests are non empty.
     */
    @Test
    public void testConfigurationLoad() throws Exception {
        String ctsRoot = System.getProperty("CTS_ROOT");
        File testcases = new File(ctsRoot, "/android-cts/testcases/");
        if (!testcases.exists()) {
            fail(String.format("%s does not exists", testcases));
            return;
        }
        File[] listConfig = testcases.listFiles(new FilenameFilter() {
            @Override
            public boolean accept(File dir, String name) {
                if (name.endsWith(".config")) {
                    return true;
                }
                return false;
            }
        });
        assertTrue(listConfig.length > 0);
        // Create a FolderBuildInfo to similate the CompatibilityBuildProvider
        FolderBuildInfo stubFolder = new FolderBuildInfo("-1", "-1");
        stubFolder.setRootDir(new File(ctsRoot));
        stubFolder.addBuildAttribute(CompatibilityBuildHelper.SUITE_NAME, "CTS");
        // We expect to be able to load every single config in testcases/
        for (File config : listConfig) {
            IConfiguration c = ConfigurationFactory.getInstance()
                    .createConfigurationFromArgs(new String[] {config.getAbsolutePath()});
            // Ensure the deprecated ApkInstaller is not used anymore.
            for (ITargetPreparer prep : c.getTargetPreparers()) {
                if (prep.getClass().isAssignableFrom(ApkInstaller.class)) {
                    throw new ConfigurationException(
                            String.format("%s: Use com.android.tradefed.targetprep.suite."
                                    + "SuiteApkInstaller instead of com.android.compatibility."
                                    + "common.tradefed.targetprep.ApkInstaller, options will be "
                                    + "the same.", config));
                }
            }
            // We can ensure that Host side tests are not empty.
            for (IRemoteTest test : c.getTests()) {
                if (test instanceof HostTest) {
                    HostTest hostTest = (HostTest) test;
                    // We inject a made up folder so that it can find the tests.
                    hostTest.setBuild(stubFolder);
                    int testCount = hostTest.countTestCases();
                    if (testCount == 0) {
                        throw new ConfigurationException(
                                String.format("%s: %s reports 0 test cases.", config, test));
                    }
                }
            }
        }
    }
}