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// 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);
}
}
}
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