1 files changed, 72 insertions, 0 deletions
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/TensorAddressTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/TensorAddressTestCase.java
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+++ b/vespajlib/src/test/java/com/yahoo/tensor/TensorAddressTestCase.java
@@ -0,0 +1,72 @@
+// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.tensor;
+
+import static com.yahoo.tensor.TensorAddress.of;
+import static com.yahoo.tensor.TensorAddress.ofLabels;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+/**
+ * Test for tensor address.
+ *
+ * @author baldersheim
+ */
+public class TensorAddressTestCase {
+    public static void equal(TensorAddress a, TensorAddress b) {
+        assertEquals(a.hashCode(), b.hashCode());
+        assertEquals(a, b);
+        assertEquals(a.size(), b.size());
+        for (int i = 0; i < a.size(); i++) {
+            assertEquals(a.label(i), b.label(i));
+            assertEquals(a.numericLabel(i), b.numericLabel(i));
+        }
+    }
+    public static void notEqual(TensorAddress a, TensorAddress b) {
+        assertNotEquals(a.hashCode(), b.hashCode()); // This might not hold, but is bad if not very rare
+        assertNotEquals(a, b);
+    }
+    @Test
+    void testStringVersusNumericAddressEquality() {
+        equal(ofLabels("1"), of(1));
+    }
+    @Test
+    void testInEquality() {
+        notEqual(ofLabels("1"), ofLabels("2"));
+        notEqual(of(1), of(2));
+    }
+    @Test
+    void testDimensionsEffectsEqualityAndHash() {
+        notEqual(ofLabels("1"), ofLabels("1", "1"));
+        notEqual(of(1), of(1, 1));
+    }
+    @Test
+    void testAllowNullDimension() {
+        TensorAddress s1 = ofLabels("1", null, "2");
+        TensorAddress s2 = ofLabels("1", "2");
+        assertNotEquals(s1, s2);
+        assertEquals(-1, s1.numericLabel(1));
+        assertEquals(null, s1.label(1));
+    }
+
+    private static void verifyWithLabel(int dimensions) {
+        int [] indexes = new int[dimensions];
+        Arrays.fill(indexes, 1);
+        TensorAddress next = of(indexes);
+        for (int i = 0; i < dimensions; i++) {
+            indexes[i] = 3;
+            assertEquals(of(indexes), next = next.withLabel(i, 3));
+        }
+    }
+    @Test
+    void testWithLabel() {
+        for (int i=0; i < 10; i++) {
+            verifyWithLabel(i);
+        }
+    }
+
+}