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add tests to support the events implementations
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209
OpenFeature/src/test/java/dev/openfeature/sdk/EventsHandlerTest.kt
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| package dev.openfeature.sdk | ||
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| import dev.openfeature.sdk.async.observeProviderReady | ||
| import dev.openfeature.sdk.async.toAsync | ||
| import dev.openfeature.sdk.events.EventHandler | ||
| import dev.openfeature.sdk.events.OpenFeatureEvents | ||
| import dev.openfeature.sdk.events.observe | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import kotlinx.coroutines.ExperimentalCoroutinesApi | ||
| import kotlinx.coroutines.Job | ||
| import kotlinx.coroutines.flow.take | ||
| import kotlinx.coroutines.flow.timeout | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.test.UnconfinedTestDispatcher | ||
| import kotlinx.coroutines.test.runTest | ||
| import org.junit.Assert | ||
| import org.junit.Test | ||
| import org.mockito.Mockito.`when` | ||
| import org.mockito.kotlin.doReturn | ||
| import org.mockito.kotlin.mock | ||
| import kotlin.time.Duration.Companion.milliseconds | ||
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|
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| @OptIn(ExperimentalCoroutinesApi::class) | ||
| class EventsHandlerTest { | ||
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| @Test | ||
| fun observing_event_observer_works() = runTest { | ||
| val eventObserver = EventHandler.eventsObserver() | ||
| val eventPublisher = EventHandler.eventsPublisher() | ||
| var emitted = false | ||
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| val job = backgroundScope.launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| eventObserver.observe<OpenFeatureEvents.ProviderReady>() | ||
| .take(1) | ||
| .collect { | ||
| emitted = true | ||
| } | ||
| } | ||
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| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| job.join() | ||
| Assert.assertTrue(emitted) | ||
| } | ||
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| @Test | ||
| fun multiple_subscribers_works() = runTest { | ||
| val eventObserver = EventHandler.eventsObserver() | ||
| val eventPublisher = EventHandler.eventsPublisher() | ||
| val numberOfSubscribers = 10 | ||
| val parentJob = Job() | ||
| var emitted = 0 | ||
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| repeat(numberOfSubscribers) { | ||
| CoroutineScope(parentJob).launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| eventObserver.observe<OpenFeatureEvents.ProviderReady>() | ||
| .take(1) | ||
| .collect { | ||
| emitted += 1 | ||
| } | ||
| } | ||
| } | ||
|
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| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| parentJob.children.forEach { it.join() } | ||
| Assert.assertTrue(emitted == 10) | ||
| } | ||
|
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| @Test | ||
| fun canceling_one_subscriber_does_not_cancel_others() = runTest { | ||
| val eventObserver = EventHandler.eventsObserver() | ||
| val eventPublisher = EventHandler.eventsPublisher() | ||
| val numberOfSubscribers = 10 | ||
| val parentJob = Job() | ||
| var emitted = 0 | ||
|
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| val job = backgroundScope.launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| eventObserver.observe<OpenFeatureEvents.ProviderReady>() | ||
| .take(1) | ||
| .collect {} | ||
| } | ||
|
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| repeat(numberOfSubscribers) { | ||
| CoroutineScope(parentJob).launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| eventObserver.observe<OpenFeatureEvents.ProviderReady>() | ||
| .take(1) | ||
| .collect { | ||
| emitted += 1 | ||
| } | ||
| } | ||
| } | ||
| job.cancel() | ||
| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| parentJob.children.forEach { it.join() } | ||
| Assert.assertTrue(emitted == 10) | ||
| } | ||
|
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| @Test | ||
| fun the_provider_status_stream_works() = runTest { | ||
| val eventPublisher = EventHandler.eventsPublisher() | ||
| var isProviderReady = false | ||
|
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| // observing the provider status after the provider ready event is published | ||
| val job = backgroundScope.launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| observeProviderReady() | ||
| .take(1) | ||
| .collect { | ||
| isProviderReady = true | ||
| } | ||
| } | ||
|
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| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| job.join() | ||
| Assert.assertTrue(isProviderReady) | ||
| } | ||
|
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| @Test | ||
| fun the_provider_status_stream_not_emitting_without_event_published() = runTest { | ||
| var isProviderReady = false | ||
|
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| // observing the provider status after the provider ready event is published | ||
| val job = backgroundScope.launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| observeProviderReady() | ||
| .timeout(10L.milliseconds) | ||
| .collect { | ||
| isProviderReady = true | ||
| } | ||
| } | ||
|
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| job.join() | ||
| Assert.assertTrue(!isProviderReady) | ||
| } | ||
|
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| @Test | ||
| fun the_provider_status_stream_is_replays_current_status() = runTest { | ||
| val eventPublisher = EventHandler.eventsPublisher() | ||
| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| var isProviderReady = false | ||
|
|
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| // observing the provider status after the provider ready event is published | ||
| val job = backgroundScope.launch(UnconfinedTestDispatcher(testScheduler)) { | ||
| observeProviderReady() | ||
| .take(1) | ||
| .collect { | ||
| isProviderReady = true | ||
| } | ||
| } | ||
|
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| job.join() | ||
| Assert.assertTrue(isProviderReady) | ||
| } | ||
|
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| @Test | ||
| fun observe_string_value_from_client_works() = runTest { | ||
| val testDispatcher = UnconfinedTestDispatcher(testScheduler) | ||
| val eventPublisher = EventHandler.eventsPublisher(testDispatcher) | ||
| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| val key = "mykey" | ||
| val default = "default" | ||
| val resultTexts = mutableListOf<String>() | ||
|
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| val mockOpenFeatureClient = mock<OpenFeatureClient> { | ||
| on { getStringValue(key, default) } doReturn "text1" | ||
| } | ||
|
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| // observing the provider status after the provider ready event is published | ||
| val job = backgroundScope.launch(testDispatcher) { | ||
| mockOpenFeatureClient.toAsync() | ||
| .observeStringValue(key, default) | ||
| .take(2) | ||
| .collect { | ||
| resultTexts.add(it) | ||
| } | ||
| } | ||
|
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| `when`(mockOpenFeatureClient.getStringValue(key, default)) | ||
| .thenReturn("text2") | ||
|
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| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| job.join() | ||
| Assert.assertEquals(listOf("text1", "text2"), resultTexts) | ||
| } | ||
|
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| @Test | ||
| fun observe_string_value_from_client_waits_until_provider_ready() = runTest { | ||
| val testDispatcher = UnconfinedTestDispatcher(testScheduler) | ||
| val eventPublisher = EventHandler.eventsPublisher(testDispatcher) | ||
| val key = "mykey" | ||
| val default = "default" | ||
| val resultTexts = mutableListOf<String>() | ||
|
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| val mockOpenFeatureClient = mock<OpenFeatureClient> { | ||
| on { getStringValue(key, default) } doReturn "text1" | ||
| } | ||
|
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| // observing the provider status after the provider ready event is published | ||
| val job = backgroundScope.launch(testDispatcher) { | ||
| mockOpenFeatureClient.toAsync() | ||
| .observeStringValue(key, default) | ||
| .take(1) | ||
| .collect { | ||
| resultTexts.add(it) | ||
| } | ||
| } | ||
|
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| eventPublisher.publish(OpenFeatureEvents.ProviderReady) | ||
| job.join() | ||
| Assert.assertEquals(listOf("text1"), resultTexts) | ||
| } | ||
| } |