/*
* Created on Jul 27, 2012
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*
* Copyright @2011 the original author or authors.
*/
package org.assertj.core.groups;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.extractor.Extractors.byName;
import static org.assertj.core.groups.FieldsOrPropertiesExtractor.extract;
import static org.assertj.core.test.ExpectedException.none;
import static org.assertj.core.util.Lists.newArrayList;
import java.util.Arrays;
import java.util.List;
import org.assertj.core.test.Employee;
import org.assertj.core.test.ExpectedException;
import org.assertj.core.test.Name;
import org.assertj.core.util.introspection.IntrospectionError;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
public class FieldsOrPropertiesExtractor_extract_test {
@Rule
public ExpectedException thrown = none();
private Employee yoda;
private Employee luke;
private List<Employee> employees;
@Before
public void setUp() {
yoda = new Employee(1L, new Name("Yoda"), 800);
yoda.surname = new Name("Master", "Jedi");
luke = new Employee(2L, new Name("Luke", "Skywalker"), 26);
employees = newArrayList(yoda, luke);
}
@Test
public void should_extract_field_values_in_absence_of_properties() {
List<Object> extractedValues = extract(employees, byName("id"));
assertThat(extractedValues).containsOnly(1L, 2L);
}
@Test
public void should_extract_null_valuesfor_null_property_values() {
yoda.setName(null);
List<Object> extractedValues = extract(employees, byName("name"));
assertThat(extractedValues).containsOnly(null, new Name("Luke", "Skywalker"));
}
@Test
public void should_extract_null_values_for_null_nested_property_values() {
yoda.setName(null);
List<Object> extractedValues = extract(employees, byName("name.first"));
assertThat(extractedValues).containsOnly(null, "Luke");
}
@Test
public void should_extract_null_valuesfor_null_field_values() {
List<Object> extractedValues = extract(employees, byName("surname"));
assertThat(extractedValues).containsOnly(new Name("Master", "Jedi"), null);
}
@Test
public void should_extract_null_values_for_null_nested_field_values() {
List<Object> extractedValues = extract(employees, byName("surname.first"));
assertThat(extractedValues).containsOnly("Master", null);
}
@Test
public void should_extract_property_values_when_no_public_field_match_given_name() {
List<Object> extractedValues = extract(employees, byName("age"));
assertThat(extractedValues).containsOnly(800, 26);
}
@Test
public void should_extract_pure_property_values() {
List<Object> extractedValues = extract(employees, byName("adult"));
assertThat(extractedValues).containsOnly(true);
}
@Test
public void should_throw_error_when_no_property_nor_public_field_match_given_name() {
thrown.expect(IntrospectionError.class);
extract(employees, byName("unknown"));
}
@Test
public void should_throw_exception_when_given_name_is_null() {
thrown.expectIllegalArgumentException("The name of the field/property to read should not be null");
extract(employees, byName((String)null));
}
@Test
public void should_throw_exception_when_given_name_is_empty() {
thrown.expectIllegalArgumentException("The name of the field/property to read should not be empty");
extract(employees, byName(""));
}
@Test
public void should_fallback_to_field_if_exception_has_been_thrown_on_property_access() throws Exception {
List<Employee> employees = Arrays.<Employee>asList(employeeWithBrokenName("Name"));
List<Object> extractedValues = extract(employees, byName("name"));
assertThat(extractedValues).containsOnly(new Name("Name"));
}
@Test
public void should_prefer_properties_over_fields() throws Exception {
List<Employee> employees = Arrays.<Employee>asList(employeeWithOverridenName("Overriden Name"));
List<Object> extractedValues = extract(employees, byName("name"));
assertThat(extractedValues).containsOnly(new Name("Overriden Name"));
}
@Test
public void should_throw_exception_if_property_cannot_be_extracted_due_to_runtime_exception_during_property_access() throws Exception {
thrown.expect(IntrospectionError.class);
List<Employee> employees = Arrays.<Employee>asList(brokenEmployee());
extract(employees, byName("adult"));
}
// --
private Employee employeeWithBrokenName(String name) {
return new Employee(1L, new Name(name), 0){
@Override
public Name getName() {
throw new IllegalStateException();
}
};
}
private Employee employeeWithOverridenName(final String overridenName) {
return new Employee(1L, new Name("Name"), 0){
@Override
public Name getName() {
return new Name(overridenName);
}
};
}
private Employee brokenEmployee() {
return new Employee(){
@Override
public boolean isAdult() {
throw new IllegalStateException();
}
};
}
}