load notification artwork through Coil by cover-art identity

app/src/test/kotlin/com/subtracks/playback/CoverArtArtworkTest.kt

@@ -0,0 +1,25 @@
+package com.subtracks.playback
+
+import android.net.Uri
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class CoverArtArtworkTest {
+    @Test
+    fun artworkUrisRoundTripThroughTheCoverArtId() {
+        val coverArtId = "al-123/with space"
+        val uri = CoverArtArtwork.uri(coverArtId)
+
+        assertEquals(CoverArtArtwork.SCHEME, uri.scheme)
+        assertEquals(coverArtId, CoverArtArtwork.coverArtId(uri))
+    }
+
+    @Test
+    fun nonCoverArtUrisAreRejected() {
+        assertNull(CoverArtArtwork.coverArtId(Uri.parse("https://example.test/art")))
+    }
+}