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tests: add unit test coverage for QueueManager
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109 changes: 109 additions & 0 deletions
109
parsely/src/test/java/com/parsely/parselyandroid/QueueManagerTest.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| package com.parsely.parselyandroid | ||
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| import androidx.test.core.app.ApplicationProvider | ||
| import com.parsely.parselyandroid.QueueManager.QUEUE_SIZE_LIMIT | ||
| import com.parsely.parselyandroid.QueueManager.STORAGE_SIZE_LIMIT | ||
| import org.assertj.core.api.Assertions.assertThat | ||
| import org.junit.Before | ||
| import org.junit.Test | ||
| import org.junit.runner.RunWith | ||
| import org.robolectric.RobolectricTestRunner | ||
| import org.robolectric.annotation.LooperMode | ||
| import org.robolectric.shadows.ShadowLooper.shadowMainLooper | ||
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| @RunWith(RobolectricTestRunner::class) | ||
| @LooperMode(LooperMode.Mode.PAUSED) | ||
| internal class QueueManagerTest { | ||
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| private lateinit var sut: QueueManager | ||
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| private val tracker = FakeTracker() | ||
| private val repository = FakeLocalRepository() | ||
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| @Before | ||
| fun setUp() { | ||
| sut = QueueManager(tracker, repository) | ||
| } | ||
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| @Test | ||
| fun `given the queue is smaller than any threshold, when querying flush manager, do nothing`() { | ||
| // given | ||
| val initialInMemoryQueue = listOf(mapOf("test" to "test")) | ||
| tracker.applyFakeQueue(initialInMemoryQueue) | ||
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| // when | ||
| sut.execute().get() | ||
| shadowMainLooper().idle(); | ||
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| // then | ||
| assertThat(tracker.inMemoryQueue).isEqualTo(initialInMemoryQueue) | ||
| assertThat(repository.storedQueue).isEmpty() | ||
| } | ||
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| @Test | ||
| fun `given the in-memory queue is above the in-memory limit, when querying flush manager, then save queue to local storage and remove first event`() { | ||
| // given | ||
| val initialInMemoryQueue = (1..QUEUE_SIZE_LIMIT + 1).map { mapOf("test" to it) } | ||
| tracker.applyFakeQueue(initialInMemoryQueue) | ||
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| // when | ||
| sut.execute().get() | ||
| shadowMainLooper().idle(); | ||
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| // then | ||
| assertThat(repository.storedQueue).isEqualTo(initialInMemoryQueue) | ||
| assertThat(tracker.inMemoryQueue).hasSize(QUEUE_SIZE_LIMIT) | ||
| } | ||
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| @Test | ||
| fun `given the in-memory queue is above the in-memory limit and stored events queue is above stored-queue limit, when querying flush manager, then expel the last event from local storage`() { | ||
| // given | ||
| val initialInMemoryQueue = (1..QUEUE_SIZE_LIMIT + 1).map { mapOf("in memory" to it) } | ||
| tracker.applyFakeQueue(initialInMemoryQueue) | ||
| val initialStoredQueue = (1..STORAGE_SIZE_LIMIT + 1).map { mapOf("storage" to it) } | ||
| repository.persistQueue(initialStoredQueue) | ||
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| // when | ||
| sut.execute().get() | ||
| shadowMainLooper().idle(); | ||
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| // then | ||
| assertThat(repository.wasEventExpelled).isTrue | ||
| } | ||
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| inner class FakeTracker : ParselyTracker( | ||
| "siteId", 10, ApplicationProvider.getApplicationContext() | ||
| ) { | ||
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| private var fakeQueue: List<Map<String, Any>> = emptyList() | ||
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| internal override fun getInMemoryQueue(): List<Map<String, Any>> = fakeQueue | ||
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| fun applyFakeQueue(fakeQueue: List<Map<String, Any>>) { | ||
| this.fakeQueue = fakeQueue.toList() | ||
| } | ||
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| override fun storedEventsCount(): Int { | ||
| return repository.storedQueue.size | ||
| } | ||
| } | ||
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| class FakeLocalRepository : | ||
| LocalStorageRepository(ApplicationProvider.getApplicationContext()) { | ||
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| private var localFileQueue = emptyList<Map<String, Any?>?>() | ||
| var wasEventExpelled = false | ||
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| override fun persistQueue(inMemoryQueue: List<Map<String, Any?>?>) { | ||
| this.localFileQueue += inMemoryQueue | ||
| } | ||
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| override val storedQueue: ArrayList<Map<String, Any?>?> | ||
| get() = ArrayList(localFileQueue) | ||
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| override fun expelStoredEvent() { | ||
| wasEventExpelled = true | ||
| } | ||
| } | ||
| } |