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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.datatypes;
import com.yahoo.document.DataType;
import com.yahoo.document.DocumentId;
import com.yahoo.document.DocumentType;
import com.yahoo.document.Field;
import com.yahoo.document.ReferenceDataType;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* @author vekterli
* @since 6.65
*/
public class ReferenceFieldValueTestCase {
private static DocumentType createDocumentType(String name) {
DocumentType type = new DocumentType(name);
type.addField(new Field("foo", DataType.STRING));
return type;
}
private static ReferenceDataType createReferenceType(String documentTypeName, int id) {
return new ReferenceDataType(createDocumentType(documentTypeName), id);
}
private static ReferenceDataType referenceTypeFoo() {
return createReferenceType("foo", 1234);
}
private static ReferenceDataType referenceTypeFooDifferentId() {
return createReferenceType("foo", 5678);
}
private static ReferenceDataType referenceTypeBar() {
return createReferenceType("bar", 7654);
}
private static DocumentId docId(String idString) {
return new DocumentId(idString);
}
@Test
public void default_constructed_reference_is_empty_and_bound_to_type() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
assertFalse(value.getDocumentId().isPresent());
assertEquals(referenceTypeFoo(), value.getDataType());
}
@Test
public void factory_method_creates_empty_reference_bound_to_type() {
ReferenceFieldValue value = ReferenceFieldValue.createEmptyWithType(referenceTypeFoo());
assertFalse(value.getDocumentId().isPresent());
assertEquals(referenceTypeFoo(), value.getDataType());
}
@Test
public void reference_can_be_constructed_with_id() {
DocumentId id = docId("id:ns:foo::itsa-me");
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo(), id);
assertTrue(value.getDocumentId().isPresent());
assertEquals(id, value.getDocumentId().get());
}
@Test
public void can_explicitly_set_new_id_for_existing_reference() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
DocumentId newId = docId("id:ns:foo::wario-time");
value.setDocumentId(newId);
assertTrue(value.getDocumentId().isPresent());
assertEquals(newId, value.getDocumentId().get());
}
@Test
public void can_assign_new_id_for_existing_reference() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
DocumentId newId = docId("id:ns:foo::wario-time");
value.assign(newId);
assertTrue(value.getDocumentId().isPresent());
assertEquals(newId, value.getDocumentId().get());
}
// This is legacy behaviour and does not smell entirely nice.
@Test
public void assigning_null_implies_clearing_id() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
value.assign(null);
assertFalse(value.getDocumentId().isPresent());
}
@Test(expected = IllegalArgumentException.class)
public void assigning_non_reference_field_value_instance_throws_exception() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
value.assign("nope!");
}
@Test
public void can_assign_empty_reference_field_value_instance_to_existing_reference() {
ReferenceFieldValue existing = new ReferenceFieldValue(referenceTypeFoo());
ReferenceFieldValue newValue = new ReferenceFieldValue(referenceTypeFoo());
// Logically a no-op, but still worth testing.
existing.assign(newValue);
assertEquals(newValue, existing);
}
@Test
public void can_assign_reference_field_value_instance_with_id_to_existing_reference() {
ReferenceFieldValue existing = new ReferenceFieldValue(referenceTypeFoo());
ReferenceFieldValue newValue = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
existing.assign(newValue);
assertEquals(newValue, existing);
}
@Test
public void assigning_reference_field_with_different_type_to_existing_reference_throws_exception() {
ReferenceFieldValue existing = new ReferenceFieldValue(referenceTypeFoo());
ReferenceFieldValue newValue = new ReferenceFieldValue(referenceTypeBar());
try {
existing.assign(newValue);
fail();
} catch (IllegalArgumentException e) {
assertEquals("Can't assign reference of type Reference<bar> to reference of type Reference<foo>",
e.getMessage());
}
}
@Test
public void reference_value_can_be_cleared() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::yoshi-egg-feast"));
value.clear();
assertFalse(value.getDocumentId().isPresent());
}
@Test
public void references_with_different_type_ids_are_not_equal() {
ReferenceFieldValue lhs = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
ReferenceFieldValue rhs = new ReferenceFieldValue(referenceTypeFooDifferentId(), docId("id:ns:foo::toad"));
assertNotEquals(lhs, rhs);
}
@Test
public void references_with_different_document_ids_are_not_equal() {
ReferenceFieldValue lhs = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::peach"));
ReferenceFieldValue rhs = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::bowser"));
assertNotEquals(lhs, rhs);
}
@Test
public void references_with_same_type_and_id_are_equal() {
ReferenceFieldValue lhs = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
ReferenceFieldValue rhs = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
assertEquals(lhs, rhs);
}
@Test
public void references_with_same_type_and_no_id_are_equal() {
ReferenceFieldValue lhs = new ReferenceFieldValue(referenceTypeFoo());
ReferenceFieldValue rhs = new ReferenceFieldValue(referenceTypeFoo());
assertEquals(lhs, rhs);
}
@Test
public void hash_code_takes_type_and_id_into_account() {
ReferenceFieldValue fooField = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
ReferenceFieldValue barField = new ReferenceFieldValue(referenceTypeBar(), docId("id:ns:bar::toad"));
ReferenceFieldValue fooFieldWithDifferentId = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::luigi"));
// ... with a very high probability:
assertNotEquals(fooField.hashCode(), barField.hashCode());
assertNotEquals(fooField.hashCode(), fooFieldWithDifferentId.hashCode());
assertNotEquals(barField.hashCode(), fooFieldWithDifferentId.hashCode());
}
@Test(expected = IllegalArgumentException.class)
public void reference_constructor_requires_that_id_has_same_document_type_as_data_type() {
new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:bar::mismatch"));
}
@Test(expected = IllegalArgumentException.class)
public void reference_doc_id_setter_requires_that_id_has_same_document_type_as_data_type() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
value.setDocumentId(docId("id:ns:bar::mismatch"));
}
@Test(expected = IllegalArgumentException.class)
public void assigning_new_id_for_existing_reference_requires_that_id_has_same_document_type_as_data_type() {
ReferenceFieldValue value = new ReferenceFieldValue(referenceTypeFoo());
DocumentId newId = docId("id:ns:bar::mama-mia");
value.assign(newId);
}
@Test
public void exposed_wrapped_value_is_null_for_empty_reference() {
ReferenceFieldValue nullRef = new ReferenceFieldValue(referenceTypeFoo());
assertNull(nullRef.getWrappedValue());
}
@Test
public void expose_wrapped_value_is_doc_id_for_non_empty_reference() {
ReferenceFieldValue idRef = new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad"));
assertEquals(docId("id:ns:foo::toad"), idRef.getWrappedValue());
}
@Test
public void that_toString_provides_value() {
assertEquals("Optional.empty", new ReferenceFieldValue(referenceTypeFoo()).toString());
assertEquals("Optional[id:ns:foo::toad]", new ReferenceFieldValue(referenceTypeFoo(), docId("id:ns:foo::toad")).toString());
}
}
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