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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.vespa.indexinglanguage.expressions;
import com.yahoo.document.DataType;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.datatypes.StringFieldValue;
import com.yahoo.vespa.indexinglanguage.SimpleTestAdapter;
import org.junit.Test;
import static com.yahoo.vespa.indexinglanguage.expressions.ExpressionAssert.assertVerify;
import static com.yahoo.vespa.indexinglanguage.expressions.ExpressionAssert.assertVerifyThrows;
import static org.junit.Assert.*;
/**
* @author Simon Thoresen Hult
*/
public class SubstringTestCase {
@Test
public void requireThatAccessorsWork() {
SubstringExpression exp = new SubstringExpression(6, 9);
assertEquals(6, exp.getFrom());
assertEquals(9, exp.getTo());
}
@Test
public void requireThatHashCodeAndEqualsAreImplemented() {
Expression exp = new SubstringExpression(6, 9);
assertNotEquals(exp, new Object());
assertNotEquals(exp, new SubstringExpression(66, 99));
assertNotEquals(exp, new SubstringExpression(6, 99));
assertEquals(exp, new SubstringExpression(6, 9));
assertEquals(exp.hashCode(), new SubstringExpression(6, 9).hashCode());
}
@Test
public void requireThatExpressionCanBeVerified() {
Expression exp = new SubstringExpression(6, 9);
assertVerify(DataType.STRING, exp, DataType.STRING);
assertVerifyThrows(null, exp, "Expected string input, but no input is specified");
assertVerifyThrows(DataType.INT, exp, "Expected string input, got int");
}
@Test
public void requireThatRangeIsCappedToInput() {
assertEquals(new StringFieldValue(""), new SubstringExpression(6, 9).execute(new StringFieldValue("012345")));
assertEquals(new StringFieldValue("345"), new SubstringExpression(3, 9).execute(new StringFieldValue("012345")));
}
@Test
public void requireThatIllegalRangeThrowsException() {
assertIndexOutOfBounds(-1, 69);
assertIndexOutOfBounds(69, -1);
assertIndexOutOfBounds(-9, -6);
assertIndexOutOfBounds(9, 6);
}
private static void assertIndexOutOfBounds(int from, int to) {
try {
new SubstringExpression(from, to);
fail();
} catch (IndexOutOfBoundsException e) {
}
}
@Test
public void requireThatStringIsSliced() {
ExecutionContext ctx = new ExecutionContext(new SimpleTestAdapter());
ctx.setValue(new StringFieldValue("666999"));
new SubstringExpression(2, 4).execute(ctx);
FieldValue val = ctx.getValue();
assertTrue(val instanceof StringFieldValue);
assertEquals("69", ((StringFieldValue)val).getString());
}
}
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