Adjust tests to be compatible with PHPUnit 10 (#998)

This avoids warnings on PHPUnit 10, without actually
switching to PHPUnit 10.

Add missing void return types (#997)

Rename Scalar\LNumber to Scalar\Int_

Format tests as well

The unnecessary parentheses for "new" are a bit annoying, but I
can live with it...

Fixed array value evaluation with unpacked array

Update test for PHP 8 error behavior

Replace division by zero with a different error condition that
still warns, and adjust the expected message based on PHP version.

updates via "rectorphp/rector" (#573)

- "global" -> remove unused "use" statements
- "phpunit" -> fix "@covers" comments
- "phpunit" -> replace "->will($this->returnValue()" with "->

updates via "rectorphp/rector" (#573)

- "global" -> remove unused "use" statements
- "phpunit" -> fix "@covers" comments
- "phpunit" -> replace "->will($this->returnValue()" with "->willReturn()"
- "UseTest.php" -> add missing namespace
- "composer.json" -> use "autoload-dev"
- remove -> "require_once" usage in the tests (use autoload-dev via composer.json)

-> most of the changes are done automatically by "https://github.com/rectorphp/rector"

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Use methods instead of annotations for expected exceptions (#533)

Improve constant evaluation and add docs

Split into evaluateDirectly() and evaluateSilently(), to be able
to treat errors more gracefully. Add documentation for constant
evaluation.

[CS] New line in the end of file

[CS] Open class brackets in new line

add strict_types to tests + fix explode type

Add constant expression evaluator (#402)