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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.*;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.datatypes.StringFieldValue;
import com.yahoo.document.datatypes.Struct;
import com.yahoo.vespa.indexinglanguage.SimpleDocumentAdapter;
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 GetFieldTestCase {
@Test
public void requireThatAccessorsWork() {
GetFieldExpression exp = new GetFieldExpression("foo");
assertEquals("foo", exp.getFieldName());
}
@Test
public void requireThatHashCodeAndEqualsAreImplemented() {
Expression exp = new GetFieldExpression("foo");
assertFalse(exp.equals(new Object()));
assertFalse(exp.equals(new GetFieldExpression("bar")));
assertEquals(exp, new GetFieldExpression("foo"));
assertEquals(exp.hashCode(), new GetFieldExpression("foo").hashCode());
}
@Test
public void requireThatExpressionCanBeVerified() {
StructDataType type = new StructDataType("my_struct");
type.addField(new Field("foo", DataType.STRING));
Expression exp = new GetFieldExpression("foo");
assertVerify(type, exp, DataType.STRING);
assertVerifyThrows(null, exp, "Expected any input, but no input is specified");
assertVerifyThrows(DataType.INT, exp, "Expected structured input, got int");
assertVerifyThrows(type, new GetFieldExpression("bar"), "Field 'bar' not found in struct type 'my_struct'");
}
@Test
public void requireThatStructFieldsCanBeRead() {
DataType barType = DataType.STRING;
FieldValue bar = barType.createFieldValue("bar");
StructDataType fooType = new StructDataType("my_struct");
fooType.addField(new Field("bar", barType));
Struct foo = new Struct(fooType);
foo.setFieldValue("bar", bar);
DocumentType docType = new DocumentType("my_doc");
docType.addField("foo", fooType);
Document doc = new Document(docType, "id:scheme:my_doc::");
doc.setFieldValue("foo", foo);
ExecutionContext ctx = new ExecutionContext(new SimpleDocumentAdapter(doc));
assertEquals(bar, new StatementExpression(new InputExpression("foo"),
new GetFieldExpression("bar")).execute(ctx));
}
@Test
public void requireThatIllegalInputThrows() {
try {
new GetFieldExpression("foo").execute(new StringFieldValue("bar"));
fail();
} catch (IllegalArgumentException e) {
assertEquals("Expected structured input, got string", e.getMessage());
}
}
@Test
public void requireThatUnknownFieldThrows() {
try {
new GetFieldExpression("foo").execute(new StructDataType("my_struct").createFieldValue());
fail();
} catch (IllegalArgumentException e) {
assertEquals("Field 'foo' not found in struct type 'my_struct'", e.getMessage());
}
}
}
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