public function test_crud_partial() {
    $partial = $this->selective_refresh->add_partial( 'foo' );
    $this->assertSame( $this->selective_refresh, $partial->component );
    $this->assertInstanceOf( 'WP_Customize_Partial', $partial );
    $this->assertSame( $partial, $this->selective_refresh->get_partial( $partial->id ) );
    $this->assertArrayHasKey( $partial->id, $this->selective_refresh->partials() );

    $this->selective_refresh->remove_partial( $partial->id );
    $this->assertEmpty( $this->selective_refresh->get_partial( $partial->id ) );
    $this->assertArrayNotHasKey( $partial->id, $this->selective_refresh->partials() );

    $partial = new WP_Customize_Partial( $this->selective_refresh, 'bar' );
    $this->assertSame( $partial, $this->selective_refresh->add_partial( $partial ) );
    $this->assertSame( $partial, $this->selective_refresh->get_partial( 'bar' ) );
    $this->assertSameSets( array( 'bar' ), array_keys( $this->selective_refresh->partials() ) );

    add_filter( 'customize_dynamic_partial_args', array( $this, 'filter_customize_dynamic_partial_args' ), 10, 2 );
    add_filter( 'customize_dynamic_partial_class', array( $this, 'filter_customize_dynamic_partial_class' ), 10, 3 );

    $partial = $this->selective_refresh->add_partial( 'recognized-class' );
    $this->assertInstanceOf( 'Tested_Custom_Partial', $partial );
    $this->assertSame( '.recognized', $partial->selector );
  }