This test failed in an integration environment where the search returned more items than necessary.
I modified it to just check that the tax that's created some lines above appears in the search results.
@Tecnativa TT21419
Tests failed if you don't have an account called 'Tax Paid' in your test DB, which
can happen when you are integrating tests in other environments, for example with
other starting language.
* Tests
* PEP8
* Use invoice._convert_to_write(invoice._cache). This way, the onchange will be inheritable and will add here also the added values
* better get_context_values
* unify method compute_balance
* open move lines linked to balance