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// Copyright 2019 Oath Inc. 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 org.junit.Test;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
/**
* @author bratseth
*/
public class ValueTestCase {
private static final double delta = 0.000001;
@Test
public void testValueFunctionGeneralForm() {
Tensor input = Tensor.from("tensor(key{},x{}):{ {key:foo,x:0}:1.4, {key:bar,x:0}:2.3 }");
Tensor result = new Value(new ConstantTensor(input),
List.of(new Value.DimensionValue("key", "bar"),
new Value.DimensionValue("x", 0)))
.evaluate();
assertEquals(0, result.type().rank());
assertEquals(2.3, result.asDouble(), delta);
}
@Test
public void testValueFunctionSingleMappedDimension() {
Tensor input = Tensor.from("tensor(key{}):{ {key:foo}:1.4, {key:bar}:2.3 }");
Tensor result = new Value(new ConstantTensor(input),
List.of(new Value.DimensionValue("foo")))
.evaluate();
assertEquals(0, result.type().rank());
assertEquals(1.4, result.asDouble(), delta);
}
@Test
public void testValueFunctionSingleIndexedDimension() {
Tensor input = Tensor.from("tensor(key[3]):[1.1, 2.2, 3.3]");
Tensor result = new Value(new ConstantTensor(input),
List.of(new Value.DimensionValue(2)))
.evaluate();
assertEquals(0, result.type().rank());
assertEquals(3.3, result.asDouble(), delta);
}
@Test
public void testValueFunctionShortFormWithMultipleDimensionsIsNotAllowed() {
try {
Tensor input = Tensor.from("tensor(key{},x{}):{ {key:foo,x:0}:1.4, {key:bar,x:0}:2.3 }");
new Value(new ConstantTensor(input),
List.of(new Value.DimensionValue("bar"),
new Value.DimensionValue(0)))
.evaluate();
fail("Expected exception");
}
catch (IllegalArgumentException e) {
assertEquals("Short form of cell addresses is only supported with a single dimension: Specify dimension names explicitly",
e.getMessage());
}
}
}
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