Mocking ormlite database

Question

I have an OrmLiteBaseActivity and in the onCreate() of this activity i read some data from a database. Depending on the data read I change the visibility of some views.

I'm writing tests for this activity. How can I mock the database (or even use another test database) so I can change the data in the database according to my tests needs so I can test different cases depending on that data. I want to test the visibility of the views depending on the data read.

Any ideas, guides, examples or anything else that will help me is welcomed :)

Answer 1

I'm writing tests for this activity. How can I mock the database (or even use another test database) so I can change the data in the database according to my tests needs so I can test different cases depending on that data.

All of the database stuff is driven internally to ORMLite with 4 interfaces:

• ConnectionSource which gives connections to the database
• DatabaseConnection which represents the connection
• CompiledStatement which represents a compiled SQL statement
• DatabaseResults which gives returns from CompiledStatement.runQuery()

When you construct your DAOs, you pass in a ConnectionSource implementation that gives DatabaseConnections, etc.. You can certain use EasyMock or some little concrete class to mock out these 4 interfaces. It's a little complex to do so but it can be done.

The unit tests for ORMLite are pretty extensive. For some partial examples you can take a look at:

• FieldTypeTest.testForeignAutoRefresh() -- it shows the mocking of the ConnectionSource and DatabaseConnection but doesn't go all of the way to DatabaseResults.
• TableUtilsTest.testStatement() -- it shows some complex mocking of DatabaseConnection, CompiledStatement, and DatabaseResults.
• H2CompiledStatement and other classes in that test package. This is the test code that ORMLite uses to test the various database operations. H2++.