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<?php
namespace React\Promise;
class FunctionMapTest extends TestCase
{
protected function mapper()
{
return function ($val) {
return $val * 2;
};
}
protected function promiseMapper()
{
return function ($val) {
return resolve($val * 2);
};
}
/** @test */
public function shouldMapInputValuesArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
map(
[1, 2, 3],
$this->mapper()
)->then($mock);
}
/** @test */
public function shouldMapInputPromisesArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
map(
[resolve(1), resolve(2), resolve(3)],
$this->mapper()
)->then($mock);
}
/** @test */
public function shouldMapMixedInputArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
map(
[1, resolve(2), 3],
$this->mapper()
)->then($mock);
}
/** @test */
public function shouldMapInputWhenMapperReturnsAPromise()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
map(
[1, 2, 3],
$this->promiseMapper()
)->then($mock);
}
/** @test */
public function shouldAcceptAPromiseForAnArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
map(
resolve([1, resolve(2), 3]),
$this->mapper()
)->then($mock);
}
/** @test */
public function shouldResolveToEmptyArrayWhenInputPromiseDoesNotResolveToArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([]));
map(
resolve(1),
$this->mapper()
)->then($mock);
}
/** @test */
public function shouldPreserveTheOrderOfArrayWhenResolvingAsyncPromises()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([2, 4, 6]));
$deferred = new Deferred();
map(
[resolve(1), $deferred->promise(), resolve(3)],
$this->mapper()
)->then($mock);
$deferred->resolve(2);
}
/** @test */
public function shouldRejectWhenInputContainsRejection()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(2));
map(
[resolve(1), reject(2), resolve(3)],
$this->mapper()
)->then($this->expectCallableNever(), $mock);
}
/** @test */
public function shouldRejectWhenInputPromiseRejects()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(null));
map(
reject(),
$this->mapper()
)->then($this->expectCallableNever(), $mock);
}
/** @test */
public function shouldCancelInputPromise()
{
$mock = $this
->getMockBuilder('React\Promise\CancellablePromiseInterface')
->getMock();
$mock
->expects($this->once())
->method('cancel');
map(
$mock,
$this->mapper()
)->cancel();
}
/** @test */
public function shouldCancelInputArrayPromises()
{
$mock1 = $this
->getMockBuilder('React\Promise\CancellablePromiseInterface')
->getMock();
$mock1
->expects($this->once())
->method('cancel');
$mock2 = $this
->getMockBuilder('React\Promise\CancellablePromiseInterface')
->getMock();
$mock2
->expects($this->once())
->method('cancel');
map(
[$mock1, $mock2],
$this->mapper()
)->cancel();
}
}