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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.tensor;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class TensorParserTestCase {
@Test
public void testParsing() {
assertEquals(Tensor.Builder.of(TensorType.fromSpec("tensor()")).build(),
Tensor.from("{}"));
assertEquals(Tensor.Builder.of(TensorType.fromSpec("tensor(x{})")).cell(1.0, 0).build(),
Tensor.from("{{x:0}:1.0}"));
assertEquals(Tensor.Builder.of(TensorType.fromSpec("tensor(x{})")).cell().label("x", "l0").value(1.0).build(),
Tensor.from("{{x:l0}:1.0}"));
}
@Test
public void testIllegalStrings() {
assertIllegal("label must be an identifier or integer, not '\"l0\"'",
"{{x:\"l0\"}:1.0}");
assertIllegal("dimension must be an identifier or integer, not ''x''",
"{{'x':\"l0\"}:1.0}");
assertIllegal("dimension must be an identifier or integer, not '\"x\"'",
"{{\"x\":\"l0\", \"y\":\"l0\"}:1.0, {\"x\":\"l0\", \"y\":\"l1\"}:2.0}");
}
private void assertIllegal(String message, String tensor) {
try {
Tensor.from(tensor);
fail("Expected an IllegalArgumentException when parsing " + tensor);
}
catch (IllegalArgumentException e) {
assertEquals(message, e.getMessage());
}
}
}
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