Assert not null

[burn1ngbear]

What was changed

Added Assert::notNull() method — the complement of the existing Assert::null(). Throws AssertionException when the actual value is null, narrows the type via @psalm-assert !null / @phpstan-assert !null.

Why?

Assert::null() existed but its counterpart was missing, forcing users to work around with Assert::notSame(null, $value) or similar.

Checklist

• Closes #
• Tested
  • Tested manually
  • Unit tests added (plugin/assert/tests/Self/AssertNotNull.php)
• Documentation

[Copilot]

Pull request overview

Adds a missing Assert::notNull() assertion to complement existing Assert::null(), including static-analysis type narrowing and accompanying unit/feature tests to validate success and failure reporting.

Changes:

• Added Assert::notNull() to plugin/assert/Assert.php with Psalm/PHPStan assertions.
• Extended core self-test coverage to exercise the new assertion.
• Added plugin-level self/feature tests plus negative stubs to verify failure reason/context behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/Testo/Self/AssertTest.php	Exercises the new Assert::notNull() in the existing “simple assertions” smoke test.
plugin/assert/tests/Stub/AssertNotNullNegative.php	Adds negative-case stubs used by feature tests.
plugin/assert/tests/Self/AssertNotNull.php	Adds self-tests for passing inputs and exception throwing on null.
plugin/assert/tests/Feature/AssertNotNullTest.php	Verifies test-runner integration and failure reason/context propagation.
plugin/assert/Assert.php	Introduces Assert::notNull() implementation and annotations.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.