Using assertSame and fix coding style via PHPCS

[peter279k]

Changed log

• Using the assertSame to make expected strict to assert the result.
• Fix coding style with PHP_CodeSniffer tool. The coding style errors are as follows:

FILE: ...n-source-contributions/localized/src/Validation/LtValidation.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 31 | ERROR | [x] Use single instead of double quotes for simple
    |       |     strings.
----------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------
FILE: ...is/build/open-source-contributions/localized/tests/bootstrap.php
----------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
----------------------------------------------------------------------
 15 | ERROR | [x] Use single instead of double quotes for simple
    |       |     strings.
----------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------
FILE: ...n-source-contributions/localized/src/Validation/BrValidation.php
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FOUND 2 ERRORS AFFECTING 1 LINE
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 196 | ERROR | [x] Use single instead of double quotes for simple
     |       |     strings.
 196 | ERROR | [x] Use single instead of double quotes for simple
     |       |     strings.
----------------------------------------------------------------------
PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------

[dereuromark]

You can use the new rector rule here that I wrote :)