While we might never be able to have 100% of our code strict, we can at
the very least do it for all of our tests. This ensures that our tests
are using our API with the types as intended by the test author, and not
silently be cast to what our API requires.
* Xls Reader Handle MACCENTRALEUROPE With or Without Hyphen
Fixes issue #549 and https://github.com/Maatwebsite/Laravel-Excel/issues/989 (which is the source of the new test file). Some systems accept MACCENTRALEUROPE as the name for the appropriate encoding, and some accept MAC-CENTRALEUROPE. I fortunately have access to at least one of each type, and have run the tests on each.
CodePage.php has an array of translations from codepage number to string. I now allow the value to itself be an array; if so, the code will test each in turn to see if it can be used in iconv. I did not go fishing for other similar problems. If such show up, they can be dealt with in the same manner as this one. I don't really expect others, since this is a problem not merely for Xls, but, even then, it applies only to BIFF5 and earlier.
I also moved XlsTest from Reader to Reader/Xls.
* Cache Successful Result For Future Use
Per suggestion from @MarkBaker
While investigating something else in Shared, I noticed that CodePage
had poor test coverage and a high complexity rating. This change
addresses both; Scrutinizer would love it, although its interface on
GitHub seems broken at the moment (all PRs show "Waiting for External
Code Coverage").
Adrien Crivelli
oleibman