Testing db in android app.

TestDb.java

package com.example.android.sunshine.app.data;

import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.test.AndroidTestCase;

import java.util.HashSet;

public class TestDb extends AndroidTestCase {

    public static final String LOG_TAG = TestDb.class.getSimpleName();

    // Since we want each test to start with a clean slate
    void deleteTheDatabase() {
        mContext.deleteDatabase(WeatherDbHelper.DATABASE_NAME);
    }

    public void setUp() {
        deleteTheDatabase();
    }

    public void testCreateDb() throws Throwable { .. }

    public void testLocationTable() { .. }

    public void testUpdateLocationAux(){
		WeatherDbHelper weatherDbHelper = new WeatherDbHelper(this.mContext);
		SQLiteDatabase db = weatherDbHelper.getWritableDatabase();
		/** insert value */
		ContentValues values = TestUtilities.createNorthPoleLocationValues();
		long newId = db.insert(LocationEntry.TABLE_NAME, null, values);
		String whereClause = "_id = ? ";
		String [] whereArgs = new String[] {Long.toString(newId)};
		Cursor cursorAux = db.query(WeatherContract.LocationEntry.TABLE_NAME, null, whereClause, whereArgs, null, null, null);
		assertEquals("Testing insert...", 1, cursorAux.getCount());
		TestUtilities.validateCursor("testUpdateLocation.  Error validating location entry update.", cursorAux, values);
		cursorAux.close();
		db.close();
	}
}