How to check if data is inserted in Room Database

Question

I am using Room Database from the new Architecture components in my project. I am adding some data through dao, but when trying to retrieve it I am not getting it. Can you pleas

Answer 1

There are multiple ways you can test that.

1. As @Ege Kuzubasioglu mentioned you can use stetho to check manually (Need minor change to code).

2. Pull database file from "data/data/yourpackage/databases/yourdatabase.db" to your local machine and use any applications to read the content inside the database. I personally use https://sqlitebrowser.org/. Pulling database file can be done either using the shell commands or use "Device File Explorer" from android studio.

3. Write TestCase to see if it is working. Here is an example of test case from one of my projects.

   // Code from my DAO class

   @Insert(onConflict = OnConflictStrategy.REPLACE) public abstract Long[] insertPurchaseHistory(List MusicOrders);

//My Test Case @Test public void insertPurchaseHistoryTest() {

    // Read test data from "api-responses/music-purchase-history-response.json"
    InputStream inputStream = getClass().getClassLoader()
            .getResourceAsStream("api-responses/music-purchase-history-response.json");
    // Write utility method to convert your stream to a string.
    String testData = FileManager.readFileFromStream(inputStream);

    // Convert test data to "musicOrdersResponse"
    MusicOrdersResponse musicOrdersResponse = new Gson().fromJson(testData,MusicOrdersResponse.class);

    // Insert inmateMusicOrders and get the list of
    Long[] rowsInserted = tracksDao.insertPurchaseHistory(musicOrdersResponse.getmusicOrders());
    assertThat(rowsInserted.length,Matchers.greaterThan(0));
}