Code Coverage |
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Lines |
Functions and Methods |
Classes and Traits |
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| Total | |
75.00% |
24 / 32 |
|
57.14% |
4 / 7 |
CRAP | |
0.00% |
0 / 1 |
| RedefineExit | |
75.00% |
24 / 32 |
|
57.14% |
4 / 7 |
26.25 | |
0.00% |
0 / 1 |
| setup | |
100.00% |
6 / 6 |
|
100.00% |
1 / 1 |
2 | |||
| setupDangerously | |
0.00% |
0 / 4 |
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0.00% |
0 / 1 |
6 | |||
| restoreAll | |
100.00% |
2 / 2 |
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100.00% |
1 / 1 |
1 | |||
| expirationHandler | |
62.50% |
5 / 8 |
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0.00% |
0 / 1 |
11.38 | |||
| exitHandler | |
90.00% |
9 / 10 |
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0.00% |
0 / 1 |
4.02 | |||
| getBacktrace | |
100.00% |
1 / 1 |
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100.00% |
1 / 1 |
1 | |||
| ignoreExitCall | |
100.00% |
1 / 1 |
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100.00% |
1 / 1 |
2 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Main package entry point. |
| 4 | * |
| 5 | * @package automattic/patchwork-redefine-exit |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic; |
| 9 | |
| 10 | use Automattic\RedefineExit\ExitException; |
| 11 | |
| 12 | /** |
| 13 | * Main package entry point. |
| 14 | */ |
| 15 | class RedefineExit { |
| 16 | |
| 17 | /** |
| 18 | * Function this instance is handling. |
| 19 | * |
| 20 | * @var string |
| 21 | */ |
| 22 | private $which; |
| 23 | |
| 24 | /** |
| 25 | * Set up the redefinitions. |
| 26 | */ |
| 27 | public static function setup() { |
| 28 | foreach ( array( 'exit', 'die' ) as $func ) { |
| 29 | $instance = new static(); |
| 30 | $instance->which = $func; |
| 31 | |
| 32 | $handle = \Patchwork\redefine( $func, array( $instance, 'exitHandler' ) ); |
| 33 | $handle->addExpirationHandler( array( $instance, 'expirationHandler' ) ); |
| 34 | $handle->unsilence(); |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Set up the redefinitions, without registering the expiration handlers. |
| 40 | */ |
| 41 | public static function setupDangerously() { |
| 42 | foreach ( array( 'exit', 'die' ) as $func ) { |
| 43 | $instance = new static(); |
| 44 | $instance->which = $func; |
| 45 | \Patchwork\redefine( $func, array( $instance, 'exitHandler' ) ); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Restore all Patchwork redefines except ours. |
| 51 | */ |
| 52 | public static function restoreAll() { |
| 53 | \Patchwork\restoreAll(); |
| 54 | static::setup(); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Handle Patchwork removing the redefinition. |
| 59 | * |
| 60 | * @private |
| 61 | */ |
| 62 | public function expirationHandler() { |
| 63 | // Allow removing the handler when called from Patchwork's own __destruct or our restoreAll function. |
| 64 | // Otherwise complain and exit. |
| 65 | $bt = $this->getBacktrace(); |
| 66 | foreach ( $bt as $data ) { |
| 67 | if ( isset( $data['class'] ) && $data['class'] === \Patchwork\CallRerouting\Handle::class && $data['function'] === '__destruct' ) { |
| 68 | return; |
| 69 | } |
| 70 | if ( isset( $data['class'] ) && $data['class'] === static::class && $data['function'] === 'restoreAll' ) { |
| 71 | return; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | fprintf( STDERR, "The Patchwork handler for %s was removed. This breaks tests, don't do it.\nStack trace:\n%s\n", $this->which, ( new \Exception() )->getTraceAsString() ); |
| 76 | exit( 1 ); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Handle a call to `exit` or `die`. |
| 81 | * |
| 82 | * @private |
| 83 | * @param string|int|null $arg Argument. |
| 84 | * @throws ExitException Whenever `$this->ignoreExitCall()` doesn't return true. |
| 85 | */ |
| 86 | public function exitHandler( $arg = null ) { |
| 87 | // While Patchwork does have a way to exclude files from replacement, |
| 88 | // it requires non-wildcarded paths in the patchwork.json. Easier to just |
| 89 | // check here for calls from within PHPUnit itself. |
| 90 | $bt = $this->getBacktrace(); |
| 91 | $func = \Patchwork\getFunction(); |
| 92 | foreach ( $bt as $i => $data ) { |
| 93 | if ( $data['function'] === $func ) { |
| 94 | $stack = array_slice( $bt, $i ); |
| 95 | $stack[0]['function'] = $this->which; |
| 96 | if ( $this->ignoreExitCall( $stack ) ) { |
| 97 | return \Patchwork\relay(); |
| 98 | } |
| 99 | break; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | throw new ExitException( $this->which, $arg ); |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Call debug_backtrace(). |
| 108 | * |
| 109 | * @return array[] |
| 110 | */ |
| 111 | protected function getBacktrace() { |
| 112 | // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_debug_backtrace |
| 113 | return debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS ); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Determine if a call should be ignored. |
| 118 | * |
| 119 | * @param array[] $stack Call stack to check, as from `debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS )`. |
| 120 | * The top stack frame is the `exit`/`die` call itself. |
| 121 | * @return bool True if the `exit`/`die` called via this stack frame should be ignored. |
| 122 | */ |
| 123 | protected function ignoreExitCall( $stack ) { |
| 124 | return isset( $stack[1]['class'] ) && substr( $stack[1]['class'], 0, 8 ) === 'PHPUnit\\'; |
| 125 | } |
| 126 | } |