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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.functions;
import com.yahoo.tensor.Tensor;
import com.yahoo.tensor.evaluation.Name;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* @author arnej
*/
public class ReduceJoinTestCase {
@Test
public void testReduceJoinTriggers() {
var a = Tensor.from("tensor(x[3])", "[1,2,3]");
var b = Tensor.from("tensor(x[3])", "[4,5,6]");
var fa = new ConstantTensor<Name>(a);
var fb = new ConstantTensor<Name>(a);
var j = new Join<Name>(fa, fb, ScalarFunctions.add());
var r = new Reduce<Name>(j, Reduce.Aggregator.sum, "x");
var rj = new ReduceJoin<Name>(r, j);
assertTrue(rj.canOptimize(a, b));
}
@Test
public void testReduceJoinUnoptimized() {
var a = Tensor.from("tensor(x[3])", "[1,2,3]");
var b = Tensor.from("tensor(y[3])", "[4,5,6]");
var fa = new ConstantTensor<Name>(a);
var fb = new ConstantTensor<Name>(a);
var j = new Join<Name>(fa, fb, ScalarFunctions.add());
var r = new Reduce<Name>(j, Reduce.Aggregator.sum, "x");
var rj = new ReduceJoin<Name>(r, j);
assertFalse(rj.canOptimize(a, b));
}
}
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