diff --git a/app/src/test/java/xyz/cottongin/radio247/service/StreamResolverTest.kt b/app/src/test/java/xyz/cottongin/radio247/service/StreamResolverTest.kt
new file mode 100644
index 0000000..02a4287
--- /dev/null
+++ b/app/src/test/java/xyz/cottongin/radio247/service/StreamResolverTest.kt
@@ -0,0 +1,64 @@
+package xyz.cottongin.radio247.service
+
+import io.mockk.coEvery
+import io.mockk.mockk
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import xyz.cottongin.radio247.data.db.StationStreamDao
+import xyz.cottongin.radio247.data.model.Station
+import xyz.cottongin.radio247.data.model.StationStream
+import xyz.cottongin.radio247.data.prefs.RadioPreferences
+
+class StreamResolverTest {
+
+    private val streamDao = mockk<StationStreamDao>()
+    private val prefs = mockk<RadioPreferences>()
+
+    private val testStation = Station(
+        id = 1L,
+        name = "Test",
+        url = "http://fallback.com/stream"
+    )
+
+    @Test
+    fun `returns station url when no streams exist`() = runTest {
+        coEvery { streamDao.getStreamsForStation(1L) } returns emptyList()
+        val resolver = StreamResolver(streamDao, prefs)
+        val urls = resolver.resolveUrls(testStation)
+        assertEquals(listOf("http://fallback.com/stream"), urls)
+    }
+
+    @Test
+    fun `orders streams by quality preference`() = runTest {
+        coEvery { streamDao.getStreamsForStation(1L) } returns listOf(
+            StationStream(id = 1, stationId = 1, bitrate = 128, ssl = false, url = "http://128.com"),
+            StationStream(id = 2, stationId = 1, bitrate = 256, ssl = true, url = "https://256.com"),
+            StationStream(id = 3, stationId = 1, bitrate = 128, ssl = true, url = "https://128.com")
+        )
+        coEvery { prefs.qualityPreference } returns flowOf(StreamResolver.DEFAULT_ORDER_JSON)
+        val resolver = StreamResolver(streamDao, prefs)
+        val urls = resolver.resolveUrls(testStation)
+        assertEquals("https://256.com", urls[0])
+        assertEquals("https://128.com", urls[1])
+        assertEquals("http://128.com", urls[2])
+    }
+
+    @Test
+    fun `uses station qualityOverride when set`() = runTest {
+        val stationWithOverride = testStation.copy(
+            qualityOverride = """["128-ssl","128-nossl","256-ssl","256-nossl"]"""
+        )
+        coEvery { streamDao.getStreamsForStation(1L) } returns listOf(
+            StationStream(id = 1, stationId = 1, bitrate = 128, ssl = false, url = "http://128.com"),
+            StationStream(id = 2, stationId = 1, bitrate = 256, ssl = true, url = "https://256.com"),
+            StationStream(id = 3, stationId = 1, bitrate = 128, ssl = true, url = "https://128.com")
+        )
+        val resolver = StreamResolver(streamDao, prefs)
+        val urls = resolver.resolveUrls(stationWithOverride)
+        assertEquals("https://128.com", urls[0])
+        assertEquals("http://128.com", urls[1])
+        assertEquals("https://256.com", urls[2])
+    }
+}