test: does comparing across types works as expected?

tests/Regression/access-to-non-existing-value-using-static-method-should-throw-an-exception.phpt

 <?php declare(strict_types=1);
 
-use Grifart\Enum\MissingValueDeclarationException;
-
 require __DIR__ . '/../bootstrap.php';
 
 /**

tests/Regression/loose-comparison-across-types.phpt

+<?php declare(strict_types=1);
+
+require __DIR__ . '/../bootstrap.php';
+
+/**
+ * @method static Enum1 VALUE()
+ */
+class Enum1 extends \Grifart\Enum\Enum
+{
+	use Grifart\Enum\AutoInstances;
+
+	private const VALUE = 'value';
+}
+
+/**
+ * @method static Enum2 VALUE()
+ */
+class Enum2 extends \Grifart\Enum\Enum
+{
+	use Grifart\Enum\AutoInstances;
+
+	private const VALUE = 'value';
+}
+
+\Tester\Assert::true(Enum1::VALUE()->toScalar() === Enum2::VALUE()->toScalar());
+
+// everything same, but type of value is different
+\Tester\Assert::false(Enum1::VALUE() === Enum2::VALUE());
+/** @noinspection PhpNonStrictObjectEqualityInspection TypeUnsafeComparisonInspection */
+\Tester\Assert::false(Enum1::VALUE() == Enum2::VALUE());

tests/Regression/mixed-key-type-test.phpt

 <?php declare(strict_types=1);
 
-use Grifart\Enum\MissingValueDeclarationException;
-
 require __DIR__ . '/../bootstrap.php';
 
 /**