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*
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* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/* @test
* @ bug 8063147
* @ summary Tests for Class . getFields ( ) .
* @ run testng Sanity
*/
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.testng.annotations.Test;
import static org.testng.Assert .*;
public class Sanity {
public interface EmptyInterface {}
class EmptyClass {}
interface BI1 {
public int i = 1 ;
int j = 2 ;
}
interface BI2 {
int k = 1 ;
}
public interface DI extends BI1, BI2, EmptyInterface {
int m = 5 ;
}
interface DDI extends DI {
int n = 6 ;
}
public class D extends EmptyClass {
public int publicDField;
protected int protectedDField;
private int privateDField;
}
class DD extends D {
public int publicDDField;
protected int protectedDDField;
private int privateDDField;
}
public class Universe extends DD implements DDI {
public int publicUniverseField;
protected int protectedUniverseField;
private int privateUniverseField;
}
void assertContainsNoFields(Class <?> clazz) {
assertEquals(clazz.getFields().length, 0 );
}
@Test
public void primitiveTypesHaveNoFields() throws Exception {
assertContainsNoFields(byte .class );
assertContainsNoFields(char .class );
assertContainsNoFields(short .class );
assertContainsNoFields(int .class );
assertContainsNoFields(long .class );
assertContainsNoFields(boolean .class );
assertContainsNoFields(void .class );
assertContainsNoFields(double .class );
assertContainsNoFields(float .class );
}
@Test
public void arrayTypesHaveNoFields() throws Exception {
assertContainsNoFields(byte [].class );
assertContainsNoFields(Object[].class );
assertContainsNoFields(java.util.Map[].class );
assertContainsNoFields(java.util.HashMap[].class );
}
@Test
public void emptyInterfacesHaveNoFields() throws Exception {
assertContainsNoFields(EmptyInterface.class );
}
@Test
public void emptyClassesHaveNoFields() throws Exception {
assertContainsNoFields(EmptyClass.class );
class EmptyLocalClass {}
assertContainsNoFields(EmptyLocalClass.class );
}
void assertContainsFields(Class <?> clazz, int count) {
assertEquals(clazz.getFields().length, count);
}
@Test
public void checkFieldCounts() throws Exception {
assertContainsFields(BI1.class , 2 );
assertContainsFields(BI2.class , 1 );
assertContainsFields(DI.class , 4 );
assertContainsFields(DDI.class , 5 );
assertContainsFields(D.class , 1 );
assertContainsFields(DD.class , 2 );
assertContainsFields(Universe.class , 8 );
}
void assertContainsFields(Class <?> derived, Class <?> base) {
List<Field> derivedFields = Arrays.asList(derived.getFields());
List<Field> baseFields = Arrays.asList(base.getFields());
assertTrue(derivedFields.containsAll(baseFields));
}
List<Class <?>> directSupers(Class <?> clazz) {
List<Class <?>> directSupers = new ArrayList<>();
directSupers.addAll(Arrays.asList(clazz.getInterfaces()));
if (clazz.getSuperclass() != null ) {
directSupers.add(clazz.getSuperclass());
}
return directSupers;
}
void assertContainsSuperFields(Class <?> clazz) {
for (Class <?> directSuper : directSupers(clazz)) {
assertContainsFields(clazz, directSuper);
}
}
List<Class <?>> testClasses() {
List<Class <?>> testClasses = new ArrayList<>();
testClasses.add(Sanity.class );
testClasses.addAll(Arrays.asList(Sanity.class .getDeclaredClasses()));
assertEquals(testClasses.size(), 10 );
return testClasses;
}
@Test
public void fieldsAreInheritedFromSupers() throws Exception {
for (Class clazz : testClasses()) {
assertContainsSuperFields(clazz);
}
}
@Test
public void getFieldIsConsistentWithGetFields() throws Exception {
for (Class clazz : testClasses()) {
for (Field field : clazz.getFields()) {
assertEquals(field, clazz.getField(field.getName()));
}
}
}
}
Messung V0.5 in Prozent C=99 H=85 G=92
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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