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PromiseTest.php
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<?php
namespace Sabre\Event;
class PromiseTest extends \PHPUnit_Framework_TestCase {
function testSuccess() {
$finalValue = 0;
$promise = new Promise();
$promise->fulfill(1);
$promise->then(function($value) use (&$finalValue) {
$finalValue = $value + 2;
});
$this->assertEquals(3, $finalValue);
}
function testFail() {
$finalValue = 0;
$promise = new Promise();
$promise->reject(1);
$promise->then(null, function($value) use (&$finalValue) {
$finalValue = $value + 2;
});
$this->assertEquals(3, $finalValue);
}
function testChain() {
$finalValue = 0;
$promise = new Promise();
$promise->fulfill(1);
$promise->then(function($value) use (&$finalValue) {
$finalValue = $value + 2;
return $finalValue;
})->then(function($value) use (&$finalValue) {
$finalValue = $value + 4;
return $finalValue;
});
$this->assertEquals(7, $finalValue);
}
function testChainPromise() {
$finalValue = 0;
$promise = new Promise();
$promise->fulfill(1);
$subPromise = new Promise();
$promise->then(function($value) use ($subPromise) {
return $subPromise;
})->then(function($value) use (&$finalValue) {
$finalValue = $value + 4;
return $finalValue;
});
$subPromise->fulfill(2);
$this->assertEquals(6, $finalValue);
}
function testPendingResult() {
$finalValue = 0;
$promise = new Promise();
$promise->then(function($value) use (&$finalValue) {
$finalValue = $value + 2;
});
$promise->fulfill(4);
$this->assertEquals(6, $finalValue);
}
function testPendingFail() {
$finalValue = 0;
$promise = new Promise();
$promise->then(null, function($value) use (&$finalValue) {
$finalValue = $value + 2;
});
$promise->reject(4);
$this->assertEquals(6, $finalValue);
}
function testExecutorSuccess() {
$promise = (new Promise(function($success, $fail) {
$success('hi');
}))->then(function($result) use (&$realResult) {
$realResult = $result;
});
$this->assertEquals('hi', $realResult);
}
function testExecutorFail() {
$promise = (new Promise(function($success, $fail) {
$fail('hi');
}))->then(function($result) use (&$realResult) {
$realResult = 'incorrect';
}, function($reason) use (&$realResult) {
$realResult = $reason;
});
$this->assertEquals('hi', $realResult);
}
/**
* @expectedException \Sabre\Event\PromiseAlreadyResolvedException
*/
function testFulfillTwice() {
$promise = new Promise();
$promise->fulfill(1);
$promise->fulfill(1);
}
/**
* @expectedException \Sabre\Event\PromiseAlreadyResolvedException
*/
function testRejectTwice() {
$promise = new Promise();
$promise->reject(1);
$promise->reject(1);
}
function testFromFailureHandler() {
$ok = 0;
$promise = new Promise();
$promise->error(function($reason) {
$this->assertEquals('foo', $reason);
throw new \Exception('hi');
})->then(function() use (&$ok) {
$ok = -1;
}, function() use (&$ok) {
$ok = 1;
});
$this->assertEquals(0, $ok);
$promise->reject('foo');
$this->assertEquals(1, $ok);
}
function testAll() {
$promise1 = new Promise();
$promise2 = new Promise();
$finalValue = 0;
Promise::all([$promise1, $promise2])->then(function($value) use (&$finalValue) {
$finalValue = $value;
});
$promise1->fulfill(1);
$this->assertEquals(0, $finalValue);
$promise2->fulfill(2);
$this->assertEquals([1, 2], $finalValue);
}
function testAllReject() {
$promise1 = new Promise();
$promise2 = new Promise();
$finalValue = 0;
Promise::all([$promise1, $promise2])->then(
function($value) use (&$finalValue) {
$finalValue = 'foo';
return 'test';
},
function($value) use (&$finalValue) {
$finalValue = $value;
}
);
$promise1->reject(1);
$this->assertEquals(1, $finalValue);
$promise2->reject(2);
$this->assertEquals(1, $finalValue);
}
}

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