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amp/test/SuccessTest.php

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<?php
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namespace Amp\Test;
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use Amp\PHPUnit\AsyncTestCase;
use Amp\Promise;
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use Amp\Success;
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use Revolt\EventLoop\Loop;
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use function Amp\await;
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use function Revolt\EventLoop\delay;
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class SuccessTest extends AsyncTestCase
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{
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public function testConstructWithPromise(): void
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{
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$this->expectException(\Error::class);
$success = new Success($this->getMockBuilder(Promise::class)->getMock());
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}
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public function testOnResolve(): void
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{
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$value = "Resolution value";
$success = new Success($value);
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self::assertSame($value, await($success));
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}
/**
* @depends testOnResolve
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*/
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public function testOnResolveThrowingForwardsToLoopHandlerOnSuccess(): void
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{
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$invoked = 0;
$expected = new \Exception;
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Loop::setErrorHandler(function ($exception) use (&$invoked, $expected) {
++$invoked;
$this->assertSame($expected, $exception);
});
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$callback = function () use ($expected) {
throw $expected;
};
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$success = new Success;
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$success->onResolve($callback);
delay(0); // Tick event loop to execute onResolve callback.
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self::assertSame(1, $invoked);
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}
}