XCUI Test: How does test collection happen

The test collection in XCUI Test happens in alphabetical order

So, if there are test like

• test_A
• test_X
• test_1A
• DISABLE_test

the order of execution is

• test_1A
• test_A
• test_X

and the DISABLE_test is not picked as it doesn't begin with test

I was wondering how do I intelligently name the tests to run them in order.

First solution i thought was use numbers, but

• test_1a
• test_2b
• test_10c

the tests execute in order,

• test_1a
• test_10c
• test_2b

which is not the intended order.

What is the better design?