Fix IntrospectionProcessor tests resulting in false positives #1896
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Three tests in IntrospectionProcessorTest (testLevelTooLow, testLevelEqual, testLevelHigher) aren't actually testing anything. Because
$expected = $input
is a reference, the changes made to$expected['extra']
are made to $input and carried forward to $actual. You can demonstrate this by adding areturn $record
at the immediate start ofInstrospectionProcessor::__invoke
-- the tests still pass despite bypassing all the code.Fixes #1895