promise/tests/FunctionAnyTest.php at 89fab3503a920a3142274c78310b0fa56b57dc5c · clue-labs/promise · GitHub

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<?php

namespace React\Promise;

use Exception;
use React\Promise\Exception\CompositeException;
use React\Promise\Exception\LengthException;

class FunctionAnyTest extends TestCase
{
    /** @test */
    public function shouldRejectWithLengthExceptionWithEmptyInputArray()
    {
        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with(
                self::callback(function ($exception) {
                    return $exception instanceof LengthException &&
                           'Input array must contain at least 1 item but contains only 0 items.' === $exception->getMessage();
                })
            );

        any([])
            ->then($this->expectCallableNever(), $mock);
    }

    /** @test */
    public function shouldResolveWithAnInputValue()
    {
        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with(self::identicalTo(1));

        any([1, 2, 3])
            ->then($mock);
    }

    /** @test */
    public function shouldResolveWithAPromisedInputValue()
    {
        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with(self::identicalTo(1));

        any([resolve(1), resolve(2), resolve(3)])
            ->then($mock);
    }

    /** @test */
    public function shouldRejectWithAllRejectedInputValuesIfAllInputsAreRejected()
    {
        $exception1 = new Exception();
        $exception2 = new Exception();
        $exception3 = new Exception();

        $compositeException = new CompositeException(
            [0 => $exception1, 1 => $exception2, 2 => $exception3],
            'Too many promises rejected.'
        );

        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with($compositeException);

        any([reject($exception1), reject($exception2), reject($exception3)])
            ->then($this->expectCallableNever(), $mock);
    }

    /** @test */
    public function shouldResolveWhenFirstInputPromiseResolves()
    {
        $exception2 = new Exception();
        $exception3 = new Exception();

        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with(self::identicalTo(1));

        any([resolve(1), reject($exception2), reject($exception3)])
            ->then($mock);
    }

    /** @test */
    public function shouldNotRelyOnArryIndexesWhenUnwrappingToASingleResolutionValue()
    {
        $mock = $this->createCallableMock();
        $mock
            ->expects(self::once())
            ->method('__invoke')
            ->with(self::identicalTo(2));

        $d1 = new Deferred();
        $d2 = new Deferred();

        any(['abc' => $d1->promise(), 1 => $d2->promise()])
            ->then($mock);

        $d2->resolve(2);
        $d1->resolve(1);
    }

    /** @test */
    public function shouldCancelInputArrayPromises()
    {
        $promise1 = new Promise(function () {}, $this->expectCallableOnce());
        $promise2 = new Promise(function () {}, $this->expectCallableOnce());

        any([$promise1, $promise2])->cancel();
    }

    /** @test */
    public function shouldNotCancelOtherPendingInputArrayPromisesIfOnePromiseFulfills()
    {
        $deferred = new Deferred($this->expectCallableNever());
        $deferred->resolve(null);

        $promise2 = new Promise(function () {}, $this->expectCallableNever());

        some([$deferred->promise(), $promise2], 1)->cancel();
    }
}