public function test_get_block_templates() {
    function get_template_ids( $templates ) {
      return array_map(
        static function( $template ) {
          return $template->id;
        },
        $templates
      );
    }

    // All results.
    $templates    = get_block_templates( array(), 'wp_template' );
    $template_ids = get_template_ids( $templates );

    // Avoid testing the entire array because the theme might add/remove templates.
    $this->assertContains( get_stylesheet() . '//' . 'my_template', $template_ids );

    // Filter by slug.
    $templates    = get_block_templates( array( 'slug__in' => array( 'my_template' ) ), 'wp_template' );
    $template_ids = get_template_ids( $templates );
    $this->assertSame( array( get_stylesheet() . '//' . 'my_template' ), $template_ids );

    // Filter by CPT ID.
    $templates    = get_block_templates( array( 'wp_id' => self::$post->ID ), 'wp_template' );
    $template_ids = get_template_ids( $templates );
    $this->assertSame( array( get_stylesheet() . '//' . 'my_template' ), $template_ids );
  }