TestProvider.java 文件源码

@Test
public void testProviderRegistry() {
    Context appContext = InstrumentationRegistry.getTargetContext();
    PackageManager pm = appContext.getPackageManager();

    // We define the component name based on the package name from the context and the
    // Provider class.
    ComponentName componentName = new ComponentName(appContext.getPackageName(),
            FavoritesProvider.class.getName());
    try {
        // Fetch the provider info using the component name from the PackageManager
        // This throws an exception if the provider isn't registered.
        ProviderInfo providerInfo = pm.getProviderInfo(componentName, 0);

        // Make sure that the registered authority matches the authority from the Contract.
        assertEquals("Error: FavoritesProvider registered with authority: " + providerInfo.authority
                + " instead of authority: " + FavoritesContract.AUTHORITY,
                providerInfo.authority, FavoritesContract.AUTHORITY);
    } catch (PackageManager.NameNotFoundException e) {
        // I guess the provider isn't registered correctly.
        assertTrue("Error: FavoritesProvider not registered at " + appContext.getPackageName(),
                false);
    }
}