Tests: Use assertSame() in some newly introduced tests.

This ensures that not only the return values match the expected results, but also that their type is the same.

Going forward, stricter type checking by using `assertSame()` should generally be preferred to `assertEquals()` where appropriate, to make the tests more reliable.

Follow-up to [61032].

See #64324.

git-svn-id: https://develop.svn.wordpress.org/trunk@61364 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

tests/phpunit/tests/abilities-api/wpAbilitiesRegistry.php

@@ -468,7 +468,7 @@ public function test_get_registered_for_known_ability() {
 		$this->registry->register( 'test/three', self::$test_ability_args );
 
 		$result = $this->registry->get_registered( 'test/two' );
-		$this->assertEquals( 'test/two', $result->get_name() );
+		$this->assertSame( 'test/two', $result->get_name() );
 	}
 
 	/**
@@ -499,7 +499,7 @@ public function test_unregister_for_known_ability() {
 		$this->registry->register( 'test/three', self::$test_ability_args );
 
 		$result = $this->registry->unregister( 'test/three' );
-		$this->assertEquals( 'test/three', $result->get_name() );
+		$this->assertSame( 'test/three', $result->get_name() );
 
 		$this->assertFalse( $this->registry->is_registered( 'test/three' ) );
 	}

tests/phpunit/tests/abilities-api/wpRegisterAbility.php

@@ -253,7 +253,7 @@ public function test_register_ability_no_permissions(): void {
 			$actual,
 			'Execution should fail due to no permissions'
 		);
-		$this->assertEquals( 'ability_invalid_permissions', $actual->get_error_code() );
+		$this->assertSame( 'ability_invalid_permissions', $actual->get_error_code() );
 	}
 
 	/**