ObjectPropertiesIdenticalTo

Constraint that accepts objects having properties identical to specified ones.

Compares only properties present in the array of expectations. A property is defined as either an attribute value or a value returned by object's method callable without arguments. The === operator (identity) is used for comparison.

Any key in $expected array ending with "()" is considered to be a method that returns property value.

 // ...
 $matcher = ObjectPropertiesIdenticalTo::create([
     'getName()' => 'John', 'age' => 21
 ]);

 self::assertThat(new class {
     public static $age = 21;
     public static getName(): string {
         return 'John';
     }
 }, $matcher);