Viewing file:  FunctionReduceTest.php (8.21 KB) -rwxrwxr-x
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<?php
namespace React\Promise;
class FunctionReduceTest extends TestCase
{
protected function plus()
{
return function ($sum, $val) {
return $sum + $val;
};
}
protected function append()
{
return function ($sum, $val) {
return $sum . $val;
};
}
/** @test */
public function shouldReduceValuesWithoutInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(6));
reduce(
[1, 2, 3],
$this->plus()
)->then($mock);
}
/** @test */
public function shouldReduceValuesWithInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(7));
reduce(
[1, 2, 3],
$this->plus(),
1
)->then($mock);
}
/** @test */
public function shouldReduceValuesWithInitialPromise()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(7));
reduce(
[1, 2, 3],
$this->plus(),
resolve(1)
)->then($mock);
}
/** @test */
public function shouldReducePromisedValuesWithoutInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(6));
reduce(
[resolve(1), resolve(2), resolve(3)],
$this->plus()
)->then($mock);
}
/** @test */
public function shouldReducePromisedValuesWithInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(7));
reduce(
[resolve(1), resolve(2), resolve(3)],
$this->plus(),
1
)->then($mock);
}
/** @test */
public function shouldReducePromisedValuesWithInitialPromise()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(7));
reduce(
[resolve(1), resolve(2), resolve(3)],
$this->plus(),
resolve(1)
)->then($mock);
}
/** @test */
public function shouldReduceEmptyInputWithInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(1));
reduce(
[],
$this->plus(),
1
)->then($mock);
}
/** @test */
public function shouldReduceEmptyInputWithInitialPromise()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(1));
reduce(
[],
$this->plus(),
resolve(1)
)->then($mock);
}
/** @test */
public function shouldRejectWhenInputContainsRejection()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(2));
reduce(
[resolve(1), reject(2), resolve(3)],
$this->plus(),
resolve(1)
)->then($this->expectCallableNever(), $mock);
}
/** @test */
public function shouldResolveWithNullWhenInputIsEmptyAndNoInitialValueOrPromiseProvided()
{
// Note: this is different from when.js's behavior!
// In when.reduce(), this rejects with a TypeError exception (following
// JavaScript's [].reduce behavior.
// We're following PHP's array_reduce behavior and resolve with NULL.
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(null));
reduce(
[],
$this->plus()
)->then($mock);
}
/** @test */
public function shouldAllowSparseArrayInputWithoutInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(3));
reduce(
[null, null, 1, null, 1, 1],
$this->plus()
)->then($mock);
}
/** @test */
public function shouldAllowSparseArrayInputWithInitialValue()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(4));
reduce(
[null, null, 1, null, 1, 1],
$this->plus(),
1
)->then($mock);
}
/** @test */
public function shouldReduceInInputOrder()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo('123'));
reduce(
[1, 2, 3],
$this->append(),
''
)->then($mock);
}
/** @test */
public function shouldAcceptAPromiseForAnArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo('123'));
reduce(
resolve([1, 2, 3]),
$this->append(),
''
)->then($mock);
}
/** @test */
public function shouldResolveToInitialValueWhenInputPromiseDoesNotResolveToAnArray()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(1));
reduce(
resolve(1),
$this->plus(),
1
)->then($mock);
}
/** @test */
public function shouldProvideCorrectBasisValue()
{
$insertIntoArray = function ($arr, $val, $i) {
$arr[$i] = $val;
return $arr;
};
$d1 = new Deferred();
$d2 = new Deferred();
$d3 = new Deferred();
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo([1, 2, 3]));
reduce(
[$d1->promise(), $d2->promise(), $d3->promise()],
$insertIntoArray,
[]
)->then($mock);
$d3->resolve(3);
$d1->resolve(1);
$d2->resolve(2);
}
/** @test */
public function shouldRejectWhenInputPromiseRejects()
{
$mock = $this->createCallableMock();
$mock
->expects($this->once())
->method('__invoke')
->with($this->identicalTo(null));
reduce(
reject(),
$this->plus(),
1
)->then($this->expectCallableNever(), $mock);
}
/** @test */
public function shouldCancelInputPromise()
{
$mock = $this
->getMockBuilder('React\Promise\CancellablePromiseInterface')
->getMock();
$mock
->expects($this->once())
->method('cancel');
reduce(
$mock,
$this->plus(),
1
)->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');
reduce(
[$mock1, $mock2],
$this->plus(),
1
)->cancel();
}
}
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