Commits on Jun 17, 2021

1. AssertObjectEquals trait: polyfill the Assert::assertObjectEquals() m… …

   …ethod
   
   PHPUnit 9.4.0 introduced the new `Assert::assertObjectEquals()` method.
   
   This commit:
   * Adds two traits with the same name.
       One to polyfill the method when not available in PHPUnit.
       The other to allow for `use`-ing the trait in PHPUnit versions in which the method is already natively available.
   * Adds an `InvalidComparisonMethodException` exception class.
       _PHPUnit natively throws a range of different exceptions._
       _The polyfill included in this library throws one exception type - the `InvalidComparisonMethodException` - with a range of different messages._
   * Logic to the custom autoloader which will load the correct trait depending on the PHPUnit version used.
   * Adds tests.
   
   As the polyfill contains logic to match the PHPUnit native implementation as closely as possible, while still being PHP and PHPUnit cross-version compatible, extensive unit tests have been added to ensure the behaviour of the polyfill matches that of the original function, with the exception of the _return type verification_.
   
   As return types were not available in PHP prior to PHP 7.0, the return type verification as done in the PHPUnit native implementation, has been replaced by a verification that the _returned value_ is of the required type.
   This provides the same safeguard as the PHPUnit native implementation, but in a PHP cross-version compatible manner.
   
   Note: the method uses `static::` to call the PHPUnit native functionality. This allows for existing method overloads in a child class of the PHPUnit native `TestCase` to be respected.
   
   Includes:
   * Adding information on the new polyfill to the README.
   * Adding the new polyfill to the existing `TestCases` classes.
   * Adding a few select exceptions to the PHPCS ruleset for the fixtures used in the tests.
   
   Refs:
    * sebastianbergmann/phpunit#4467
    * sebastianbergmann/phpunit#4707
    * sebastianbergmann/phpunit@1dba8c3
    * sebastianbergmann/phpunit@6099c5e

   

   jrfnl committed Jun 17, 2021
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