1 files changed, 36 insertions, 0 deletions
diff --git a/predicate-search/src/test/java/com/yahoo/search/predicate/index/ZeroConstraintPostingListTest.java b/predicate-search/src/test/java/com/yahoo/search/predicate/index/ZeroConstraintPostingListTest.java
new file mode 100644
index 00000000000..652441b796a
--- /dev/null
+++ b/predicate-search/src/test/java/com/yahoo/search/predicate/index/ZeroConstraintPostingListTest.java
@@ -0,0 +1,36 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.predicate.index;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * @author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
+ */
+public class ZeroConstraintPostingListTest {
+
+    @Test
+    public void requireThatPostingListCanIterate() {
+        ZeroConstraintPostingList postingList =
+                new ZeroConstraintPostingList(new int[] {2, 4, 6, 8});
+        assertEquals(-1, postingList.getDocId());
+        assertEquals(Interval.fromBoundaries(1, Interval.ZERO_CONSTRAINT_RANGE), postingList.getInterval());
+        assertEquals(0xffffffffffffffffL, postingList.getSubquery());
+
+        assertTrue(postingList.nextDocument(0));
+        assertEquals(2, postingList.getDocId());
+        assertTrue(postingList.prepareIntervals());
+        assertFalse(postingList.nextInterval());
+
+        assertTrue(postingList.nextDocument(7));
+        assertEquals(8, postingList.getDocId());
+
+        assertTrue(postingList.nextDocument(7));
+        assertEquals(8, postingList.getDocId());
+
+        assertFalse(postingList.nextDocument(8));
+    }
+}