test: adjust integration tests

phil-davis commented 7 months ago

Only integration test code is changed. No change to the application code.

change assertEquals to assertSame where possible. assertSame checks that the type and value are the same. That is a more specific check than assertEquals. Note that we can't do this for values that are an object - assertSame will complain that the two object instantiations are different, although the object classes, and all the object properties are the same.
remove some PHP doc @var types that my IDE told me were already understood by the code analysers
remove some type-casting where it is not needed
tidy up some code formatting
make some test failure messages more explicit