ba2b21bee8
In order to share the logic between tests for importer and those for exporter, PropertyNodesVerifier is now a separated class and drastically modified. Now the class accept "unordered" expected PropertyNode objects, which allows vCard composer to not care the exact order of each elements. MockCursor is added, which may be added into the public API in the future, but in the test directory for now. Another MockContentProvider is (temporarily) developed so that it can be accepted by MockContentResolver#addProvider(), which does not allow IContentProvider and its descendants but only exact ContentProvider, while the original MockContentProvider in android.test.mock.MockContentProvider implements IContentProvider. The test development is still on-going, but this test suffices minimal requirement of vCard tests. Internal issue number: 2160039