Fix test compilation errors blocking CI

- Add missing testImplementation(libs.junit) to squarescreen-core
- Remove baseUrl from SquareScreenConfig in SquareScreenResultTest (field removed)
- Fix File.createTempFile prefixes to meet 3-char minimum in MediaFileCacheTest
- Update PlayerRepositoryTest: add Playlist.schedule/playlist params, implement
  reportPlayback/fetchCommands/acknowledgeCommand in FakeNetworkDataSource

Author: FitzAfful

squarescreen-cache/src/test/kotlin/io/squarescreen/cache/file/MediaFileCacheTest.kt

@@ -2,6 +2,7 @@ package io.squarescreen.cache.file
 
 import org.junit.After
 import org.junit.Assert.assertArrayEquals
+import org.junit.Assert.assertEquals
 import org.junit.Assert.assertNotNull
 import org.junit.Assert.assertNull
 import org.junit.Assert.assertTrue
@@ -46,8 +47,8 @@ class MediaFileCacheTest {
     @Test
     fun sameUrlProducesSameFile() {
         val url = "https://cdn.example.com/image.jpg"
-        val source1 = File.createTempFile("t1", ".jpg").also { it.writeText("first") }
-        val source2 = File.createTempFile("t2", ".jpg").also { it.writeText("second") }
+        val source1 = File.createTempFile("tmp1", ".jpg").also { it.writeText("first") }
+        val source2 = File.createTempFile("tmp2", ".jpg").also { it.writeText("second") }
 
         cache.saveFile(url, source1)
         cache.saveFile(url, source2)
@@ -60,8 +61,8 @@ class MediaFileCacheTest {
 
     @Test
     fun differentUrlsProduceDifferentFiles() {
-        val source1 = File.createTempFile("t1", ".jpg").also { it.writeText("image1") }
-        val source2 = File.createTempFile("t2", ".jpg").also { it.writeText("image2") }
+        val source1 = File.createTempFile("tmp1", ".jpg").also { it.writeText("image1") }
+        val source2 = File.createTempFile("tmp2", ".jpg").also { it.writeText("image2") }
 
         cache.saveFile("https://cdn.example.com/a.jpg", source1)
         cache.saveFile("https://cdn.example.com/b.jpg", source2)
@@ -74,7 +75,7 @@ class MediaFileCacheTest {
 
     @Test
     fun clearAll_removesAllCachedFiles() {
-        val source = File.createTempFile("t", ".jpg").also { it.writeText("data") }
+        val source = File.createTempFile("tmp", ".jpg").also { it.writeText("data") }
         val url = "https://cdn.example.com/file.jpg"
         cache.saveFile(url, source)
 

squarescreen-core/build.gradle.kts

@@ -29,6 +29,8 @@ android {
 dependencies {
     api(libs.kotlinx.serialization.json)
     api(libs.kotlinx.coroutines.core)
+
+    testImplementation(libs.junit)
 }
 
 mavenPublishing {

squarescreen-core/src/test/kotlin/io/squarescreen/core/SquareScreenResultTest.kt

@@ -54,7 +54,6 @@ class SquareScreenResultTest {
     fun `SquareScreenConfig rejects short heartbeat interval`() {
         try {
             io.squarescreen.core.config.SquareScreenConfig(
-                baseUrl = "https://api.squarescreen.io",
                 deviceId = "id",
                 deviceToken = "token",
                 heartbeatIntervalSeconds = 10L,

squarescreen-player/src/test/kotlin/io/squarescreen/player/internal/PlayerRepositoryTest.kt

@@ -2,9 +2,11 @@ package io.squarescreen.player.internal
 
 import io.squarescreen.core.cache.CacheProvider
 import io.squarescreen.core.datasource.NetworkDataSource
+import io.squarescreen.core.model.Command
 import io.squarescreen.core.model.DeviceStatus
 import io.squarescreen.core.model.EmergencyAlert
 import io.squarescreen.core.model.HeartbeatPayload
+import io.squarescreen.core.model.PlaybackReport
 import io.squarescreen.core.model.Playlist
 import io.squarescreen.core.result.SquareScreenError
 import io.squarescreen.core.result.SquareScreenResult
@@ -107,12 +109,14 @@ class PlayerRepositoryTest {
     private fun emptyPlaylist(cachedAt: Long) = Playlist(
         items = emptyList(),
         strategy = null,
+        schedule = null,
+        playlist = null,
         cachedAt = cachedAt
     )
 
     private class FakeNetworkDataSource : NetworkDataSource {
         var nowPlayingResult: SquareScreenResult<Playlist> =
-            SquareScreenResult.Success(Playlist(emptyList(), null, 0L))
+            SquareScreenResult.Success(Playlist(emptyList(), null, null, null, 0L))
         var fetchNowPlayingCallCount = 0
 
         override suspend fun fetchNowPlaying(
@@ -127,6 +131,16 @@ class PlayerRepositoryTest {
 
         override suspend fun fetchEmergencyAlert(): SquareScreenResult<EmergencyAlert?> =
             SquareScreenResult.Success(null)
+
+        override suspend fun reportPlayback(report: PlaybackReport): SquareScreenResult<Unit> =
+            SquareScreenResult.Success(Unit)
+
+        override suspend fun fetchCommands(): SquareScreenResult<List<Command>> =
+            SquareScreenResult.Success(emptyList())
+
+        override suspend fun acknowledgeCommand(
+            commandId: String, status: String, result: Map<String, String>
+        ): SquareScreenResult<Unit> = SquareScreenResult.Success(Unit)
     }
 
     private class FakeCacheProvider : CacheProvider {