0.42.0b0 - Tagging and querying with tag expressions

You can now tag tests using the tags keyword argument of the @test decorator:

@test("simple addition", tags=["unit", "regression"])
def _():
    assert 1 + 2 == 3

To query these tags, you can use a tag expression.

ward --tags EXPR

More examples of tag expressions:

Tag Expression	Meaning
slow	tests tagged with slow
unit and integration	tests tagged with both unit and integration
big and not slow	tests tagged with big that aren't also tagged with slow
android or ios	tests tagged with either android or ios

You can use parentheses in tag expressions to change precedence rules to suit your needs.

Thanks @thebigmunch for adding this feature.