test: add unit tests for QueueEntryImpl comparison logic

Author: twisti-dev

build.gradle.kts

@@ -41,6 +41,8 @@ allprojects {
 
         compileOnly("org.springframework.boot:spring-boot-configuration-processor:3.5.3")
         //    "kapt"("org.springframework.boot:spring-boot-configuration-processor:3.4.3")
+
+        testImplementation(kotlin("test"))
     }
 
 
@@ -53,6 +55,10 @@ allprojects {
             options.use()
             options.tags("implNote:a:Implementation Note:")
         }
+
+        test {
+            useJUnitPlatform()
+        }
     }
 }
 

surf-cloud-standalone/src/test/java/dev/slne/surf/cloud/standalone/server/queue/entry/QueueEntryImplTest.kt

@@ -0,0 +1,44 @@
+package dev.slne.surf.cloud.standalone.server.queue.entry
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import java.util.*
+
+class QueueEntryImplTest {
+
+    private fun newEntry(priority: Int, preferredServer: Long? = null) =
+        QueueEntryImpl(
+            PlayerQueueHandle(UUID.randomUUID()),
+            priority,
+            bypassFull = false,
+            bypassQueue = false,
+            preferredServerUid = preferredServer
+        )
+
+    @Test
+    fun `compareTo honors priority`() {
+        val high = newEntry(priority = 10)
+        val low = newEntry(priority = 5)
+
+        assertEquals(-1, high.compareTo(low), "Higher priority should come first")
+        assertEquals(1, low.compareTo(high), "Lower priority should come after")
+    }
+
+    @Test
+    fun `compareTo prioritizes preferred server`() {
+        val a = newEntry(priority = 5, preferredServer = 1)
+        val b = newEntry(priority = 5, preferredServer = null)
+
+        assertEquals(-1, a.compareTo(b))
+        assertEquals(1, b.compareTo(a))
+    }
+
+    @Test
+    fun `compareTo equality when all fields equal`() {
+        val a = newEntry(priority = 5, preferredServer = 1)
+        val b = a.copy()
+
+        assertEquals(0, a.compareTo(b))
+        assertEquals(0, b.compareTo(a))
+    }
+}