PR Summary

• Enhancement to Constraint.php
  The 'use Stringable' enhancement has been added to src/Constraint/Constraint.php, allowing the code to work with any variable as if it's a string, which simplifies operation.

• Alterations to name property and methods in Constraint.php
  The type specification of name property and related methods (getName and name) has changed from accepting string, null, or object to accepting Stringable interface, string, or null. This makes the types more compatible with Stringable objects, thus ensuring smoother operations and lesser errors.

• New Test Added to ConstraintTest.php
  A new test has been added to confirm the modification of the getName method of the constraint instance, this test uses an anonymous class that implements the Stringable interface which will help verify that the changes are effective and error-free.

Codecov Report

Patch coverage: 100.00% and project coverage change: -6.16% ⚠️

Comparison is base (8eb3a7c) 99.73% compared to head (7cceab4) 93.58%.

@@             Coverage Diff              @@
##             master     #747      +/-   ##
============================================
- Coverage     99.73%   93.58%   -6.16%     
  Complexity     1269     1269              
============================================
  Files            63       63              
  Lines          3038     3038              
============================================
- Hits           3030     2843     -187     
- Misses            8      195     +187     

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I see there are some failed tests.
In Yiisoft\Db\Tests\Provider\SchemaProvider: AnyValue::getInstance() used as name, which is object. I've to options for fixing it.

1. Create new class AnyStringableValue which extends AnyValue and implements __toString()
2. Just rename AnyValue to AnyStringableValue and implement __toString, because this class only used for setting name() method

In Yiisoft\Db\Tests\Common\CommonSchemaTest: AnyCaseValue object used as name, which can include array or string value. I didn't understand that test case. What should I do with this test case?

P.S. I want to start contribute with this small pull-request. I will be happy for any suggestion. Don't judge strictly :)

First option would be backwards compatible. You can mark AnyValue as @deprecated.

Also see #738 (comment). That's a good question.