Tighter null checks #2107
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Tighter null checks #2107
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A number of the assertion tests weren't testing the case where `null` is passed as the target
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While looking over #2101 I noticed a bug that it introduced when
matchesSelector()ordoesNotMatchSelector()are run on anulltarget, so this PR extends the test coverage to include anulltarget for those assertions as well as all the others that didn't already test that case.Having
strictNullChecksenabled also would have caught the bug, and the project was pretty close to being able to enable them, so I made some changes to allow it.I'm happy to split these out into separate PRs if desired, or change this syntax if we don't like nested terniary operators 馃槃