1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
declare(strict_types=1); |
4
|
|
|
|
5
|
|
|
namespace League\Event; |
6
|
|
|
|
7
|
|
|
use PHPUnit\Framework\TestCase; |
8
|
|
|
use Psr\EventDispatcher\ListenerProviderInterface; |
9
|
|
|
use stdClass; |
10
|
|
|
|
11
|
|
|
class EventDispatcherTest extends TestCase |
12
|
|
|
{ |
13
|
|
|
/** |
14
|
|
|
* @test |
15
|
|
|
*/ |
16
|
|
|
public function listening_to_a_plain_object_event(): void |
17
|
|
|
{ |
18
|
|
|
$dispatcher = new EventDispatcher(); |
19
|
|
|
$listenerSpy = new ListenerSpy(); |
20
|
|
|
$event = new stdClass; |
21
|
|
|
|
22
|
|
|
$dispatcher->subscribeTo(stdClass::class, $listenerSpy); |
23
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
24
|
|
|
|
25
|
|
|
$this->assertTrue($listenerSpy->wasCalledWith($event)); |
|
|
|
|
26
|
|
|
} |
27
|
|
|
|
28
|
|
|
/** |
29
|
|
|
* @test |
30
|
|
|
*/ |
31
|
|
|
public function listening_to_a_named_event(): void |
32
|
|
|
{ |
33
|
|
|
$dispatcher = new EventDispatcher(); |
34
|
|
|
$listenerSpy = new ListenerSpy(); |
35
|
|
|
$event = new StubNamedEvent('event.name'); |
36
|
|
|
|
37
|
|
|
$dispatcher->subscribeTo('event.name', $listenerSpy); |
38
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
39
|
|
|
|
40
|
|
|
$this->assertTrue($listenerSpy->wasCalledWith($event)); |
|
|
|
|
41
|
|
|
} |
42
|
|
|
|
43
|
|
|
/** |
44
|
|
|
* @test |
45
|
|
|
*/ |
46
|
|
|
public function listening_to_a_named_event_ignores_other_names(): void |
47
|
|
|
{ |
48
|
|
|
$dispatcher = new EventDispatcher(); |
49
|
|
|
$listenerSpy = new ListenerSpy(); |
50
|
|
|
$dispatcher->subscribeTo('event.name', $listenerSpy); |
51
|
|
|
$dispatcher->dispatch(new StubNamedEvent('event.name')); |
|
|
|
|
52
|
|
|
$dispatcher->dispatch(new StubNamedEvent('other.event.name')); |
|
|
|
|
53
|
|
|
|
54
|
|
|
$this->assertEquals(1, $listenerSpy->numberOfTimeCalled()); |
55
|
|
|
} |
56
|
|
|
|
57
|
|
|
/** |
58
|
|
|
* @test |
59
|
|
|
*/ |
60
|
|
View Code Duplication |
public function it_uses_a_provided_listener_provider(): void |
|
|
|
|
61
|
|
|
{ |
62
|
|
|
$listenerSpy = new ListenerSpy(); |
63
|
|
|
$provider = new PrioritizedListenerCollection(); |
64
|
|
|
$provider->subscribeTo(stdClass::class, $listenerSpy); |
65
|
|
|
$dispatcher = new EventDispatcher($provider); |
66
|
|
|
$event = new stdClass(); |
67
|
|
|
|
68
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
69
|
|
|
|
70
|
|
|
$this->assertTrue($listenerSpy->wasCalledWith($event)); |
|
|
|
|
71
|
|
|
} |
72
|
|
|
|
73
|
|
|
/** |
74
|
|
|
* @test |
75
|
|
|
*/ |
76
|
|
View Code Duplication |
public function it_only_keeps_notifying_handlers_when_the_event_propagation_is_not_stopped(): void |
|
|
|
|
77
|
|
|
{ |
78
|
|
|
$dispatcher = new EventDispatcher(); |
79
|
|
|
$listenerSpy = new ListenerSpy(); |
80
|
|
|
$event = new StubStoppableEvent(); |
81
|
|
|
|
82
|
|
|
$dispatcher->subscribeTo( |
83
|
|
|
StubStoppableEvent::class, |
84
|
|
|
function (StubStoppableEvent $event) { |
85
|
|
|
$event->stopPropagation(); |
86
|
|
|
} |
87
|
|
|
); |
88
|
|
|
$dispatcher->subscribeTo(StubStoppableEvent::class, $listenerSpy); |
89
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
90
|
|
|
|
91
|
|
|
$this->assertFalse($listenerSpy->wasCalledWith($event)); |
|
|
|
|
92
|
|
|
} |
93
|
|
|
|
94
|
|
|
/** |
95
|
|
|
* @test |
96
|
|
|
*/ |
97
|
|
|
public function it_calls_one_time_listeners_one_time(): void |
98
|
|
|
{ |
99
|
|
|
$normalListener = new ListenerSpy(); |
100
|
|
|
$oneTimeListener = new ListenerSpy(); |
101
|
|
|
|
102
|
|
|
$dispatcher = new EventDispatcher(); |
103
|
|
|
$dispatcher->subscribeTo(stdClass::class, $normalListener); |
104
|
|
|
$dispatcher->subscribeOnceTo(stdClass::class, $oneTimeListener); |
105
|
|
|
|
106
|
|
|
$dispatcher->dispatch(new stdClass()); |
|
|
|
|
107
|
|
|
$dispatcher->dispatch(new stdClass()); |
|
|
|
|
108
|
|
|
$dispatcher->dispatch(new stdClass()); |
|
|
|
|
109
|
|
|
|
110
|
|
|
$this->assertEquals(1, $oneTimeListener->numberOfTimeCalled()); |
111
|
|
|
$this->assertEquals(3, $normalListener->numberOfTimeCalled()); |
112
|
|
|
} |
113
|
|
|
|
114
|
|
|
/** |
115
|
|
|
* @test |
116
|
|
|
* @dataProvider dpScenariosCausingSubscribingFailure |
117
|
|
|
*/ |
118
|
|
|
public function subscribing_does_not_work_when_the_underlying_provider_does_not_allow_subscribing(callable $scenario |
119
|
|
|
): void { |
120
|
|
|
$provider = new class() implements ListenerProviderInterface { |
121
|
|
|
public function getListenersForEvent(object $event): iterable |
122
|
|
|
{ |
123
|
|
|
return []; |
124
|
|
|
} |
125
|
|
|
}; |
126
|
|
|
$dispatcher = new EventDispatcher($provider); |
127
|
|
|
|
128
|
|
|
$this->expectExceptionObject( |
129
|
|
|
UnableToSubscribeListener::becauseTheListenerProviderDoesNotAcceptListeners($provider) |
130
|
|
|
); |
131
|
|
|
|
132
|
|
|
$scenario($dispatcher); |
133
|
|
|
} |
134
|
|
|
|
135
|
|
|
public function dpScenariosCausingSubscribingFailure(): iterable |
136
|
|
|
{ |
137
|
|
|
yield "subscribing" => [ |
138
|
|
|
function (EventDispatcher $dispatcher) { |
139
|
|
|
$dispatcher->subscribeTo( |
140
|
|
|
'event', |
141
|
|
|
function () { |
142
|
|
|
} |
143
|
|
|
); |
144
|
|
|
}, |
145
|
|
|
]; |
146
|
|
|
|
147
|
|
|
yield "subscribing once" => [ |
148
|
|
|
function (EventDispatcher $dispatcher) { |
149
|
|
|
$dispatcher->subscribeOnceTo( |
150
|
|
|
'event', |
151
|
|
|
function () { |
152
|
|
|
} |
153
|
|
|
); |
154
|
|
|
}, |
155
|
|
|
]; |
156
|
|
|
|
157
|
|
|
yield "subscribing from subscriber" => [ |
158
|
|
|
function (EventDispatcher $dispatcher) { |
159
|
|
|
$dispatcher->subscribeListenersFrom( |
160
|
|
|
new class () implements ListenerSubscriber { |
161
|
|
|
public function subscribeListeners(ListenerAcceptor $acceptor): void |
162
|
|
|
{ |
163
|
|
|
} |
164
|
|
|
} |
165
|
|
|
); |
166
|
|
|
}, |
167
|
|
|
]; |
168
|
|
|
} |
169
|
|
|
|
170
|
|
|
/** |
171
|
|
|
* @test |
172
|
|
|
*/ |
173
|
|
|
public function listeners_are_prioritized(): void |
174
|
|
|
{ |
175
|
|
|
$dispatcher = new EventDispatcher(); |
176
|
|
|
$event = new StubMutableEvent('Hi!'); |
177
|
|
|
$append = static function (string $value) { |
178
|
|
|
return static function (StubMutableEvent $event) use ($value) { |
179
|
|
|
$event->append(' ' . $value); |
180
|
|
|
}; |
181
|
|
|
}; |
182
|
|
|
$appendHello = $append('Hello,'); |
183
|
|
|
$appendWorld = $append('World!'); |
184
|
|
|
$appendGoodBye = $append('Good bye!'); |
185
|
|
|
$dispatcher->subscribeTo(StubMutableEvent::class, $appendWorld, 0); |
186
|
|
|
$dispatcher->subscribeTo(StubMutableEvent::class, $appendHello, 10); |
187
|
|
|
$dispatcher->subscribeTo(StubMutableEvent::class, $appendGoodBye, -10); |
188
|
|
|
|
189
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
190
|
|
|
|
191
|
|
|
$this->assertEquals('Hi! Hello, World! Good bye!', $event->value()); |
192
|
|
|
} |
193
|
|
|
|
194
|
|
|
/** |
195
|
|
|
* @test |
196
|
|
|
*/ |
197
|
|
|
public function events_from_an_event_generator_can_be_dispatched(): void |
198
|
|
|
{ |
199
|
|
|
$dispatcher = new EventDispatcher(); |
200
|
|
|
$listener = new ListenerSpy(); |
201
|
|
|
$dispatcher->subscribeTo(stdClass::class, $listener); |
202
|
|
|
|
203
|
|
|
$eventGenerator = new class () implements EventGenerator { |
204
|
|
|
use EventGeneratorBehavior { |
205
|
|
|
recordEvent as public; |
206
|
|
|
} |
207
|
|
|
}; |
208
|
|
|
$eventGenerator->recordEvent(new stdClass()); |
|
|
|
|
209
|
|
|
$eventGenerator->recordEvent(new stdClass()); |
|
|
|
|
210
|
|
|
$eventGenerator->recordEvent(new stdClass()); |
|
|
|
|
211
|
|
|
$dispatcher->dispatchGeneratedEvents($eventGenerator); |
212
|
|
|
|
213
|
|
|
$this->assertEquals(3, $listener->numberOfTimeCalled()); |
214
|
|
|
} |
215
|
|
|
|
216
|
|
|
/** |
217
|
|
|
* @test |
218
|
|
|
*/ |
219
|
|
|
public function listeners_can_be_subscribed_through_a_subscriber(): void |
220
|
|
|
{ |
221
|
|
|
$subscriber = new class () implements ListenerSubscriber { |
222
|
|
|
public function subscribeListeners(ListenerAcceptor $acceptor): void |
223
|
|
|
{ |
224
|
|
|
$acceptor->subscribeTo( |
225
|
|
|
StubMutableEvent::class, |
226
|
|
|
function (StubMutableEvent $event) { |
227
|
|
|
$event->append(' mutated'); |
228
|
|
|
} |
229
|
|
|
); |
230
|
|
|
} |
231
|
|
|
}; |
232
|
|
|
$dispatcher = new EventDispatcher(); |
233
|
|
|
$dispatcher->subscribeListenersFrom($subscriber); |
234
|
|
|
$event = new StubMutableEvent('this is'); |
235
|
|
|
$dispatcher->dispatch($event); |
|
|
|
|
236
|
|
|
|
237
|
|
|
$this->assertEquals('this is mutated', $event->value()); |
238
|
|
|
} |
239
|
|
|
} |
240
|
|
|
|
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: