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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.IntegerFieldValue;
import com.yahoo.vespa.indexinglanguage.SimpleTestAdapter;
import org.junit.Test;
import java.util.Arrays;
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 StatementTestCase {
@Test
public void requireThatAccessorsWork() {
StatementExpression exp = newStatement();
assertTrue(exp.isEmpty());
assertEquals(0, exp.size());
Expression foo = new AttributeExpression("foo");
Expression bar = new AttributeExpression("bar");
exp = newStatement(foo, bar);
assertFalse(exp.isEmpty());
assertEquals(2, exp.size());
assertSame(foo, exp.get(0));
assertSame(bar, exp.get(1));
assertEquals(Arrays.asList(foo, bar), exp.asList());
}
@Test
public void requireThatHashCodeAndEqualsAreImplemented() {
Expression foo = new AttributeExpression("foo");
Expression bar = new AttributeExpression("bar");
Expression exp = newStatement(foo, bar);
assertNotEquals(exp, new Object());
assertNotEquals(exp, new CatExpression(foo, bar));
assertNotEquals(exp, newStatement(new IndexExpression("foo")));
assertNotEquals(exp, newStatement(new IndexExpression("foo"), new IndexExpression("bar")));
assertNotEquals(exp, newStatement(foo, new IndexExpression("bar")));
assertEquals(exp, newStatement(foo, bar));
assertEquals(exp.hashCode(), newStatement(foo, bar).hashCode());
}
@Test
public void requireThatStatementIsFlattened() {
Expression foo = SimpleExpression.newConversion(DataType.INT, DataType.STRING);
Expression bar = SimpleExpression.newConversion(DataType.STRING, DataType.INT);
assertEquals(newStatement(foo, bar), newStatement(foo, bar));
assertEquals(newStatement(foo, bar), newStatement(null, foo, bar));
assertEquals(newStatement(foo, bar), newStatement(foo, null, bar));
assertEquals(newStatement(foo, bar), newStatement(foo, bar, null));
assertEquals(newStatement(foo, bar), newStatement(newStatement(foo), bar));
assertEquals(newStatement(foo, bar), newStatement(newStatement(foo), newStatement(bar)));
assertEquals(newStatement(foo, bar), newStatement(foo, newStatement(bar)));
assertEquals(newStatement(foo, bar), newStatement(newStatement(foo, bar)));
}
@Test
public void requireThatRequiredInputIsDeterminedByFirstNonNullRequiredInput() {
assertEquals(DataType.INT, newStatement(SimpleExpression.newRequired(DataType.INT)).requiredInputType());
assertEquals(DataType.INT, newStatement(new SimpleExpression(),
SimpleExpression.newRequired(DataType.INT)).requiredInputType());
assertEquals(DataType.INT, newStatement(SimpleExpression.newRequired(DataType.INT),
SimpleExpression.newRequired(DataType.INT)).requiredInputType());
}
@Test
public void requireThatRequiredInputIsNullIfAnyOutputIsCreatedFirst() {
assertNull(newStatement(new SimpleExpression().setCreatedOutput(DataType.INT),
new SimpleExpression(DataType.INT)).requiredInputType());
}
@Test
public void requireThatCreatedOutputIsDeterminedByLastNonNullCreatedOutput() {
assertEquals(DataType.STRING, newStatement(SimpleExpression.newOutput(DataType.STRING)).createdOutputType());
assertEquals(DataType.STRING, newStatement(SimpleExpression.newOutput(DataType.INT),
SimpleExpression.newOutput(DataType.STRING)).createdOutputType());
assertEquals(DataType.STRING, newStatement(SimpleExpression.newOutput(DataType.STRING),
new SimpleExpression()).createdOutputType());
}
@Test
public void requireThatInternalVerificationIsPerformed() {
Expression exp = newStatement(SimpleExpression.newOutput(DataType.STRING),
SimpleExpression.newConversion(DataType.INT, DataType.STRING));
assertVerifyThrows(null, exp, "Expected int input, got string");
assertVerifyThrows(DataType.INT, exp, "Expected int input, got string");
assertVerifyThrows(DataType.STRING, exp, "Expected int input, got string");
exp = newStatement(SimpleExpression.newOutput(DataType.INT),
SimpleExpression.newConversion(DataType.INT, DataType.STRING));
assertVerify(null, exp, DataType.STRING);
assertVerify(DataType.INT, exp, DataType.STRING);
assertVerify(DataType.STRING, exp, DataType.STRING);
}
@Test
public void requireThatStatementIsExecuted() {
ExecutionContext ctx = new ExecutionContext(new SimpleTestAdapter());
StatementExpression statement = newStatement(new ConstantExpression(new IntegerFieldValue(69)));
newStatement(statement).execute(ctx);
FieldValue val = ctx.getValue();
assertTrue(val instanceof IntegerFieldValue);
assertEquals(69, ((IntegerFieldValue)val).getInteger());
}
private static StatementExpression newStatement(Expression... args) {
return new StatementExpression(args);
}
}
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