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78 lines
1.8 KiB
PHP
78 lines
1.8 KiB
PHP
<?php
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namespace Amp\Test;
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use Amp\Deferred;
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use Amp\PHPUnit\AsyncTestCase;
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use Amp\Promise;
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use function Amp\delay;
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class DeferredTest extends AsyncTestCase
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{
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private Deferred $deferred;
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public function setUp(): void
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{
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parent::setUp();
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$this->deferred = new Deferred;
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}
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public function testGetPromise(): void
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{
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$promise = $this->deferred->promise();
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$this->assertInstanceOf(Promise::class, $promise);
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}
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/**
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* @depends testGetPromise
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*/
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public function testResolve(): void
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{
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$value = "Resolution value";
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$promise = $this->deferred->promise();
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$this->assertFalse($this->deferred->isResolved());
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$invoked = false;
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$promise->onResolve(function ($exception, $value) use (&$invoked, &$result) {
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$invoked = true;
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$result = $value;
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});
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$this->deferred->resolve($value);
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$this->assertFalse($invoked); // Resolution should be async.
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delay(0); // Force loop to tick once.
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$this->assertTrue($this->deferred->isResolved());
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$this->assertTrue($invoked);
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$this->assertSame($value, $result);
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}
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/**
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* @depends testGetPromise
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*/
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public function testFail(): void
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{
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$exception = new \Exception;
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$promise = $this->deferred->promise();
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$invoked = false;
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$promise->onResolve(function ($exception, $value) use (&$invoked, &$result) {
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$invoked = true;
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$result = $exception;
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});
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$this->deferred->fail($exception);
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$this->assertFalse($invoked); // Resolution should be async.
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delay(0); // Force loop to tick once.
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$this->assertTrue($invoked);
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$this->assertSame($exception, $result);
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}
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}
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