API

core/src/test/java/art/arcane/iris/core/pregenerator/PregenPhaseTrackerTest.java

@@ -0,0 +1,72 @@
+package art.arcane.iris.core.pregenerator;
+
+import org.junit.Test;
+
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class PregenPhaseTrackerTest {
+    @Test
+    public void theFirstTickAnnouncesTheJobAndStillReportsProgress() {
+        PregenPhaseTracker tracker = new PregenPhaseTracker();
+
+        assertEquals(List.of(PregenApiPhase.STARTED, PregenApiPhase.TICK), tracker.onTick(false));
+        assertEquals(List.of(PregenApiPhase.TICK), tracker.onTick(false));
+    }
+
+    @Test
+    public void pauseAndResumeAreEmittedOnTransitionOnly() {
+        PregenPhaseTracker tracker = new PregenPhaseTracker();
+        tracker.onTick(false);
+
+        assertEquals(List.of(PregenApiPhase.PAUSED, PregenApiPhase.TICK), tracker.onTick(true));
+        assertEquals(List.of(PregenApiPhase.TICK), tracker.onTick(true));
+        assertEquals(List.of(PregenApiPhase.RESUMED, PregenApiPhase.TICK), tracker.onTick(false));
+        assertEquals(List.of(PregenApiPhase.TICK), tracker.onTick(false));
+    }
+
+    @Test
+    public void aJobThatStartsPausedDoesNotAlsoEmitPaused() {
+        PregenPhaseTracker tracker = new PregenPhaseTracker();
+
+        assertEquals(List.of(PregenApiPhase.STARTED, PregenApiPhase.TICK), tracker.onTick(true));
+        assertEquals(List.of(PregenApiPhase.TICK), tracker.onTick(true));
+        assertEquals(List.of(PregenApiPhase.RESUMED, PregenApiPhase.TICK), tracker.onTick(false));
+    }
+
+    @Test
+    public void savingIsAStateNotAPulse() {
+        PregenPhaseTracker tracker = new PregenPhaseTracker();
+        tracker.onTick(false);
+
+        assertEquals(List.of(PregenApiPhase.SAVING), tracker.onSaving());
+        assertEquals(List.of(), tracker.onSaving());
+        assertEquals(List.of(PregenApiPhase.TICK), tracker.onTick(false));
+        assertEquals(List.of(PregenApiPhase.SAVING), tracker.onSaving());
+    }
+
+    @Test
+    public void closeIsTerminalAndDistinguishesCompletionFromCancellation() {
+        PregenPhaseTracker completed = new PregenPhaseTracker();
+        completed.onTick(false);
+        assertEquals(List.of(PregenApiPhase.COMPLETED), completed.onClose(true));
+        assertEquals(List.of(), completed.onClose(true));
+        assertEquals(List.of(), completed.onClose(false));
+        assertEquals(List.of(), completed.onTick(false));
+        assertEquals(List.of(), completed.onSaving());
+
+        PregenPhaseTracker cancelled = new PregenPhaseTracker();
+        cancelled.onTick(false);
+        assertEquals(List.of(PregenApiPhase.CANCELLED), cancelled.onClose(false));
+        assertEquals(List.of(), cancelled.onClose(true));
+    }
+
+    @Test
+    public void aJobThatNeverTickedStillReportsItsOutcomeExactlyOnce() {
+        PregenPhaseTracker tracker = new PregenPhaseTracker();
+
+        assertEquals(List.of(PregenApiPhase.CANCELLED), tracker.onClose(false));
+        assertEquals(List.of(), tracker.onClose(false));
+    }
+}