GTS 中testCoreGmsAppsPermissionsWhitelisted fail 详解

本文主要分析第 1 个case，第 2 个case详情看：GTS 中 testNumberOfHeadedApplications fail 详解

这个case 本来应该是测试Privileged permission 的白名单，但是其中也出现了其他的异常。

来看下log：

07-30 23:29:59 I/ModuleListener: [1/20] le.s.CoreGmsAppsPrivappPermissionsTest#testCoreGmsAppsPermissionsWhitelisted fail:
t.pm.PackageManager$NameNotFoundException: le.android.apps.docsat android.PackageInfoAsUser(ApplicationPackageManager.java:178)at android.PackageInfo(ApplicationPackageManager.java:149)le.stCoreGmsAppsPermissionsWhitelisted(CoreGmsAppsPrivappPermissionsTest.java:81)at flect.Method.invoke(Native Method)at org.del.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)at org.junit.del.ReflectiveCallable.run(ReflectiveCallable.java:12)at org.del.FrameworkMethod.invokeExplosively(FrameworkMethod.java:52)at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:148)at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:142)at urrent.FutureTask.run(FutureTask.java:266)at java.lang.Thread.run(Thread.java:764)

来看下code：

    @Testpublic void testCoreGmsAppsPermissionsWhitelisted() throws Exception {if (ApiLevelUtil.isBefore(26)) {String str = TAG;StringBuilder stringBuilder = new StringBuilder();stringBuilder.append("Skipping test because privileged permissions whitelist was introduced in Android 8.0. Current API Level ");stringBuilder.ApiLevel());Log.i(str, String());return;}boolean atLeastP = ApiLevelUtil.isAtLeast((int) true);PackageManager packageManager = Context().getPackageManager();Set<String> platformPrivilegedPermissions = getPlatformPrivilegedPermissions();for (String pkgName : getCoreGmsPackages()) {int flags = 12288;if (atLeastP) {flags = 12288 | 2097152;}PackageInfo pkg = PackageInfo(pkgName, flags);String str2;StringBuilder stringBuilder2;if (!pkg.applicationInfo.isPrivilegedApp()) {str2 = TAG;stringBuilder2 = new StringBuilder();stringBuilder2.append("Skipping check for non-privileged package ");stringBuilder2.append(pkgName);Log.i(str2, String());} else if (atLeastP || (pkg.applicationInfo.flags & 128) == 0) {Set<String> deniedPrivPermissions = new TreeSet();int i = 0;while (i < questedPermissions.length) {String permission = questedPermissions[i];if (ains(permission) && (questedPermissionsFlags[i] & 2) == 0) {deniedPrivPermissions.add(permission);}i++;}stringBuilder2 = new StringBuilder();stringBuilder2.append("All privileged permissions should be granted to ");stringBuilder2.append(pkgName);stringBuilder2.append(", but the following permissions were not granted: ");stringBuilder2.append(deniedPrivPermissions);Assert.String(), deniedPrivPermissions.isEmpty());} else {str2 = TAG;stringBuilder2 = new StringBuilder();stringBuilder2.append("Skipping whitelist checks for ");stringBuilder2.append(pkgName);stringBuilder2.append(" - application was updated");Log.w(str2, String());}}}

在code 执行到：

PackageInfo pkg = PackageInfo(pkgName, flags);

系统中并没有这样的package，那这里的pkgName 是怎么来的呢？详细看getCoreGmsPackages()：

    private List<String> getCoreGmsPackages() throws IOException, XmlPullParserException {DynamicConfigDeviceSide dcds = new DynamicConfigDeviceSide("GtsPlacementTestCases");if (isAutomotiveDevice()) {Values("core_gas_packages");}Values("general_core_gms_packages");}

code 可以看出应该是一个配置文件中不同的key-values，如果是Automotive 设备应该获取core_gas_packages，如果不是该设备，应该获取general_core_gms_packages，来看下这两个key-values：

    <entry key="cn_core_gms_packages"><value&s</value><value&le.android.webview</value><value&figupdater</value><value&le.acts</value><value&le.android.backuptransport</value><value&imeinitializer</value><value&le.android.partnersetup</value><value&le.android.gsf</value><value>com.android.vending</value></entry><entry key="general_core_gms_packages"><value>com.android.chrome</value><value>com.android.providers.partnerbookmarks</value><value&le.android.apps.docs</value><value&le.android.apps.maps</value><value&le.android.backuptransport</value><value&figupdater</value><value&le.android.feedback</value><value&</value><value&s</value><value&lequicksearchbox</value><value&le.android.gsf</value><value&le.android.music</value><value&imeinitializer</value><value&le.android.partnersetup</value><value&le.android.setupwizard</value><value&le.acts</value><value&s</value><value&le.android.videos</value><value&utube</value></entry>

这里显然获取的是general_core_gms_packages（有没有发现这里有一个bug，code 中是core_gas_packages，实际上配置文件中是cn_core_gms_packages，显然code 是写错了，所以google 的bug 也不少啊）。而最终原因应该是这里动态添加的package name ，并不是安装到系统中的。

结合这里的log 看，应该是包 le.android.apps.docs 并没有安装。

结论：

出现这个case 一般是Privileged permission 的问题，也有例外，需要结合dynamic 文件分析，是否是本地或是google 自身的问题。这里主要是le.android.apps.docs 没有安装，需要确认GMS 包里面是否存在。

更新下，google 后来已经豁免：

更多GTS 测试的case 见：

CTS/GTS 常见问题汇总