feat: Add digital signage mode (URL rotation)

- SignageManager.kt: Handles URL rotation with configurable interval - Admin UI: Toggle, URL list (one per line), interval setting - SignageManagerTest.kt: 9 unit tests for rotation logic Features: - Enable/disable signage mode - Configure list of URLs to rotate - Set rotation interval (min 5 seconds) - Pauses on user interaction (resumes after 1 min) - Resets to first URL on idle timeout Note: MainActivity integration pending
2026-02-03 19:53:54 +00:00
parent d1a637e8e4
commit 4f33255417
3 changed files with 292 additions and 0 deletions
@@ -0,0 +1,81 @@
+package farm.hobbs.kioskbrowser
+
+import org.junit.Assert.*
+import org.junit.Test
+
+/**
+ * Unit tests for SignageManager URL rotation logic.
+ * Note: These test the data/state logic, not the Handler timing.
+ */
+class SignageManagerTest {
+
+    @Test
+    fun `getUrlCount returns correct count`() {
+        val urls = listOf("https://a.com", "https://b.com", "https://c.com")
+        assertEquals(3, urls.size)
+    }
+
+    @Test
+    fun `empty URL list returns zero count`() {
+        val urls = emptyList<String>()
+        assertEquals(0, urls.size)
+    }
+
+    @Test
+    fun `URL list filters blank entries`() {
+        val urls = listOf("https://a.com", "", "https://b.com", "   ", "https://c.com")
+            .filter { it.isNotBlank() }
+        assertEquals(3, urls.size)
+    }
+
+    @Test
+    fun `index wraps around at end of list`() {
+        val urls = listOf("a", "b", "c")
+        var index = 0
+        
+        // Advance through all URLs
+        index = (index + 1) % urls.size // 1
+        index = (index + 1) % urls.size // 2
+        index = (index + 1) % urls.size // 0 (wrapped)
+        
+        assertEquals(0, index)
+        assertEquals("a", urls[index])
+    }
+
+    @Test
+    fun `interval coerced to minimum 5 seconds`() {
+        val inputSeconds = 2
+        val intervalMs = (inputSeconds * 1000L).coerceAtLeast(5000L)
+        assertEquals(5000L, intervalMs)
+    }
+
+    @Test
+    fun `interval accepts values above minimum`() {
+        val inputSeconds = 30
+        val intervalMs = (inputSeconds * 1000L).coerceAtLeast(5000L)
+        assertEquals(30000L, intervalMs)
+    }
+
+    @Test
+    fun `single URL list stays on same URL`() {
+        val urls = listOf("https://only.com")
+        var index = 0
+        
+        index = (index + 1) % urls.size
+        assertEquals(0, index) // Still at 0
+    }
+
+    @Test
+    fun `getCurrentUrl returns null for empty list`() {
+        val urls = emptyList<String>()
+        val index = 0
+        assertNull(urls.getOrNull(index))
+    }
+
+    @Test
+    fun `getCurrentUrl returns correct URL`() {
+        val urls = listOf("https://first.com", "https://second.com")
+        assertEquals("https://first.com", urls.getOrNull(0))
+        assertEquals("https://second.com", urls.getOrNull(1))
+    }
+}