[Jetcaster]: Auto play episode on next. (#1346)

Author: arriolac

Jetcaster/core/src/main/java/com/example/jetcaster/core/player/MockEpisodePlayer.kt

@@ -127,7 +127,6 @@ class MockEpisodePlayer(
         }
 
         next()
-        play()
     }
 
     override fun pause() {
@@ -168,6 +167,7 @@ class MockEpisodePlayer(
         val nextEpisode = q[0]
         currentEpisode = nextEpisode
         queue.value = q - nextEpisode
+        play()
     }
 
     override fun previous() {

Jetcaster/core/src/test/kotlin/com/example/jetcaster/core/player/MockEpisodePlayerTest.kt

@@ -24,6 +24,7 @@ import kotlinx.coroutines.test.advanceTimeBy
 import kotlinx.coroutines.test.advanceUntilIdle
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
 import org.junit.Test
 
 @OptIn(ExperimentalCoroutinesApi::class)
@@ -62,6 +63,22 @@ class MockEpisodePlayerTest {
         assertEquals(testEpisodes.first(), mockEpisodePlayer.currentEpisode)
     }
 
+    @Test
+    fun whenNext_queueIsNotEmpty_autoPlaysNextEpisode() = runTest(testDispatcher) {
+        val duration = Duration.ofSeconds(60)
+        val currEpisode = PlayerEpisode(
+            uri = "currentEpisode",
+            duration = duration
+        )
+        mockEpisodePlayer.currentEpisode = currEpisode
+        testEpisodes.forEach { mockEpisodePlayer.addToQueue(it) }
+
+        mockEpisodePlayer.next()
+        advanceTimeBy(100)
+
+        assertTrue(mockEpisodePlayer.playerState.value.isPlaying)
+    }
+
     @Test
     fun whenNext_queueIsEmpty_doesNothing() {
         val episode = testEpisodes[0]