// BAD
echo "<a href=\"link\" title=\"some title\">Link to somewhere</a>";
// GOOD
echo '<a href="link" title="some title">Link to somewhere</a>';


// BAD
$my_array = array(
  'first'  => 1,
  'second' => 2,
  'third'  => 3
);
// GOOD
$my_array = array(
    'first'  => 1,
    'second' => 2,
    'third'  => 3,
);


// BAD
$my_array=array(1,2,3,4);
$my_var=10;
// GOOD
$my_array = array( 1, 2, 3, 4 );
$my_var   = 10;

/**
 * Get a post's permalink, then run it through special filters and trigger
 * the 'special_action' action hook.
 *
 * @param  int       $post_id The post ID being linked to.
 * @return str|bool           The permalink or a boolean false if $post_id does not exist.
 */
function my_permalink_function( $post_id ) {

    $permalink = get_permalink( absint( $post_id ) );
    
    $permalink = apply_filters( 'special_filter', $permalink );

    do_action( 'special_action', $permalink );

    return $permalink;

}

public function test_my_permalink() {

    WP_Mock::userFunction( 'get_permalink', array(
        'args'   => 42,
        'times'  => 1,
        'return' => 'http://example.com/foo'
    ) );
    
    WP_Mock::passthruFunction( 'absint', array( 'times' => 1 ) );

    WP_Mock::onFilter( 'special_filter' )
        ->with( 'http://example.com/foo' )
        ->reply( 'https://example.com/bar' );

    WP_Mock::expectAction( 'special_action', 'https://example.com/bar' );

    $result = my_permalink_function( 42 );

    $this->assertEquals( 'https://example.com/bar', $result );

}