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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.collections.Pair;
import com.yahoo.document.DataType;
import com.yahoo.document.Field;
import com.yahoo.document.datatypes.StringFieldValue;
import com.yahoo.vespa.indexinglanguage.SimpleTestAdapter;
import org.junit.Test;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import static org.junit.Assert.*;
/**
* @author Simon Thoresen Hult
*/
public class SelectInputTestCase {
@Test
public void requireThatAccessorsWork() {
List<Pair<String, Expression>> cases = new LinkedList<>();
Pair<String, Expression> foo = new Pair<String, Expression>("foo", new AttributeExpression("foo"));
Pair<String, Expression> bar = new Pair<String, Expression>("bar", new AttributeExpression("bar"));
cases.add(foo);
cases.add(bar);
SelectInputExpression exp = new SelectInputExpression(cases);
assertEquals(2, exp.getCases().size());
assertSame(foo, exp.getCases().get(0));
assertSame(bar, exp.getCases().get(1));
}
@Test
public void requireThatHashCodeAndEqualsAreImplemented() {
Expression foo = new AttributeExpression("foo");
Expression exp = newSelectInput(foo, "bar", "baz");
assertFalse(exp.equals(new Object()));
assertFalse(exp.equals(newSelectInput(new IndexExpression("foo"))));
assertFalse(exp.equals(newSelectInput(new IndexExpression("foo"), "bar")));
assertFalse(exp.equals(newSelectInput(new IndexExpression("foo"), "bar", "baz")));
assertFalse(exp.equals(newSelectInput(foo)));
assertFalse(exp.equals(newSelectInput(foo, "bar")));
assertEquals(exp, newSelectInput(foo, "bar", "baz"));
assertEquals(exp.hashCode(), newSelectInput(foo, "bar", "baz").hashCode());
}
@Test
public void requireThatExpressionCanBeVerified() {
SimpleTestAdapter adapter = new SimpleTestAdapter();
adapter.createField(new Field("my_int", DataType.INT));
adapter.createField(new Field("my_str", DataType.STRING));
Expression exp = newSelectInput(new AttributeExpression("my_int"), "my_int");
assertVerify(adapter, null, exp);
assertVerify(adapter, DataType.INT, exp);
assertVerify(adapter, DataType.STRING, exp);
assertVerifyThrows(adapter, newSelectInput(new AttributeExpression("my_int"), "my_str"),
"Can not assign string to field 'my_int' which is int.");
assertVerifyThrows(adapter, newSelectInput(new AttributeExpression("my_int"), "my_unknown"),
"Field 'my_unknown' not found");
}
@Test
public void requireThatSelectedExpressionIsRun() {
assertSelect(Arrays.asList("foo", "bar"), List.of("foo"), "foo");
assertSelect(Arrays.asList("foo", "bar"), List.of("bar"), "bar");
assertSelect(Arrays.asList("foo", "bar"), List.of("foo", "bar"), "foo");
assertSelect(Arrays.asList("foo", "bar"), List.of("bar", "baz"), "bar");
assertSelect(Arrays.asList("foo", "bar"), List.of("baz", "cox"), null);
}
private static void assertVerify(FieldTypeAdapter adapter, DataType value, Expression exp) {
assertEquals(value, exp.verify(new VerificationContext(adapter).setValueType(value)));
}
private static void assertVerifyThrows(FieldTypeAdapter adapter, Expression exp, String expectedException) {
try {
exp.verify(new VerificationContext(adapter));
fail();
} catch (VerificationException e) {
assertEquals(expectedException, e.getMessage());
}
}
private static SelectInputExpression newSelectInput(Expression exp, String... fieldNames) {
List<Pair<String, Expression>> cases = new LinkedList<>();
for (String fieldName : fieldNames) {
cases.add(new Pair<>(fieldName, exp));
}
return new SelectInputExpression(cases);
}
private static void assertSelect(List<String> inputField, List<String> availableFields, String expected) {
SimpleTestAdapter adapter = new SimpleTestAdapter();
ExecutionContext ctx = new ExecutionContext(adapter);
for (String fieldName : availableFields) {
adapter.createField(new Field(fieldName, DataType.STRING));
ctx.setOutputValue(null, fieldName, new StringFieldValue(fieldName));
}
List<Pair<String, Expression>> cases = new LinkedList<>();
for (String fieldName : inputField) {
cases.add(new Pair<String, Expression>(fieldName, new SetVarExpression("out")));
}
new SelectInputExpression(cases).execute(ctx);
assertEquals(expected != null ? new StringFieldValue(expected) : null, ctx.getVariable("out"));
}
}
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