function testPendingFail()
{
$finalValue = 0;
$promise = new Promise();
$promise->then(null, function ($value) use(&$finalValue) {
$finalValue = $value + 2;
});
$promise->reject(4);
Loop\run();
$this->assertEquals(6, $finalValue);
}
use function Sabre\Event\coroutine;
require __DIR__ . '/../vendor/autoload.php';
/**
* This example shows demonstrates the Promise api.
*/
/* Creating a new promise */
$promise = new Promise();
/* After 2 seconds we fulfill it */
Loop\setTimeout(function () use($promise) {
echo "Step 1\n";
$promise->fulfill("hello");
}, 2);
/* Callback chain */
$result = $promise->then(function ($value) {
echo "Step 2\n";
// Immediately returning a new value.
return $value . " world";
})->then(function ($value) {
echo "Step 3\n";
// This 'then' returns a new promise which we resolve later.
$promise = new Promise();
// Resolving after 2 seconds
Loop\setTimeout(function () use($promise, $value) {
$promise->fulfill($value . ", how are ya?");
}, 2);
return $promise;
})->then(function ($value) {
echo "Step 4\n";
// This is the final event handler.
return $value . " you rock!";
})->wait();
