/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.harmony.tests.java.lang.reflect;
import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.util.HashSet;
import java.util.Set;
public class ConstructorTest extends junit.framework.TestCase {
@Retention(RetentionPolicy.RUNTIME)
@Target( {ElementType.CONSTRUCTOR, ElementType.PARAMETER})
static @interface ConstructorTestAnnotationRuntime0 {
}
@Retention(RetentionPolicy.RUNTIME)
@Target( {ElementType.CONSTRUCTOR, ElementType.PARAMETER})
static @interface ConstructorTestAnnotationRuntime1 {
}
@Retention(RetentionPolicy.CLASS)
@Target( {ElementType.CONSTRUCTOR, ElementType.PARAMETER})
static @interface ConstructorTestAnnotationClass0 {
}
@Retention(RetentionPolicy.SOURCE)
@Target( {ElementType.CONSTRUCTOR, ElementType.PARAMETER})
static @interface ConstructorTestAnnotationSource0 {
}
static class ConstructorTestHelper extends Object {
int cval;
@ConstructorTestAnnotationRuntime0
@ConstructorTestAnnotationRuntime1
@ConstructorTestAnnotationClass0
@ConstructorTestAnnotationSource0
public ConstructorTestHelper() throws IndexOutOfBoundsException {
cval = 99;
}
public ConstructorTestHelper(
@ConstructorTestAnnotationRuntime0
@ConstructorTestAnnotationRuntime1
@ConstructorTestAnnotationClass0
@ConstructorTestAnnotationSource0 Object x) {
}
public ConstructorTestHelper(String... x) {
}
private ConstructorTestHelper(int a) {
}
protected ConstructorTestHelper(long a) {
}
public int check() {
return cval;
}
}
static class GenericConstructorTestHelper<T, S extends T, E extends Exception> {
public GenericConstructorTestHelper(T t, S s) {}
public GenericConstructorTestHelper() throws E{}
}
static class NoPublicConstructorTestHelper {
// This class has no public constructor.
}
// Used to test synthetic constructor.
//
// static class Outer {
// private Outer(){}
// class Inner {
// {new Outer();}
// }
// }
public void test_getParameterAnnotations() throws Exception {
Constructor<ConstructorTestHelper> ctor1 = ConstructorTestHelper.class
.getConstructor(Object.class);
Annotation[][] paramAnnotations = ctor1.getParameterAnnotations();
assertEquals("Annotations for wrong number of parameters returned", 1,
paramAnnotations.length);
assertEquals("Wrong number of annotations returned", 2,
paramAnnotations[0].length);
Set<Class<?>> ignoreOrder = new HashSet<Class<?>>();
ignoreOrder.add(paramAnnotations[0][0].annotationType());
ignoreOrder.add(paramAnnotations[0][1].annotationType());
assertTrue("Missing ConstructorTestAnnotationRuntime0", ignoreOrder
.contains(ConstructorTestAnnotationRuntime0.class));
assertTrue("Missing ConstructorTestAnnotationRuntime1", ignoreOrder
.contains(ConstructorTestAnnotationRuntime1.class));
}
public void test_getDeclaredAnnotations() throws Exception {
Constructor<ConstructorTestHelper> ctor1 = null;
ctor1 = ConstructorTestHelper.class.getConstructor(new Class[0]);
Annotation[] annotations = ctor1.getDeclaredAnnotations();
assertEquals("Wrong number of annotations returned", 2,
annotations.length);
Set<Class<?>> ignoreOrder = new HashSet<Class<?>>();
ignoreOrder.add(annotations[0].annotationType());
ignoreOrder.add(annotations[1].annotationType());
assertTrue("Missing ConstructorTestAnnotationRuntime0", ignoreOrder
.contains(ConstructorTestAnnotationRuntime0.class));
assertTrue("Missing ConstructorTestAnnotationRuntime1", ignoreOrder
.contains(ConstructorTestAnnotationRuntime1.class));
}
public void test_isVarArgs() throws Exception {
Constructor<ConstructorTestHelper> varArgCtor = ConstructorTestHelper.class
.getConstructor(String[].class);
assertTrue("Vararg constructor not recognized", varArgCtor.isVarArgs());
Constructor<ConstructorTestHelper> nonVarArgCtor = ConstructorTestHelper.class
.getConstructor(Object.class);
assertFalse("Non vararg constructor recognized as vararg constructor",
nonVarArgCtor.isVarArgs());
}
public void test_hashCode() throws Exception {
Constructor<ConstructorTestHelper> constructor = ConstructorTestHelper.class
.getConstructor();
assertEquals(
"The constructor's hashCode is not equal to the hashCode of the name of the declaring class",
ConstructorTestHelper.class.getName().hashCode(), constructor
.hashCode());
}
@SuppressWarnings("unchecked")
public void test_toGenericString() throws Exception {
Constructor<GenericConstructorTestHelper> genericCtor = GenericConstructorTestHelper.class
.getConstructor(Object.class, Object.class);
assertEquals(
"Wrong generic string returned",
"public org.apache.harmony.tests.java.lang.reflect.ConstructorTest$GenericConstructorTestHelper(T,S)",
genericCtor.toGenericString());
Constructor<GenericConstructorTestHelper> ctor = GenericConstructorTestHelper.class
.getConstructor();
assertEquals(
"Wrong generic string returned",
"public org.apache.harmony.tests.java.lang.reflect.ConstructorTest$GenericConstructorTestHelper() throws E",
ctor.toGenericString());
}
public void test_equalsLjava_lang_Object() {
Constructor<ConstructorTestHelper> ctor1 = null, ctor2 = null;
try {
ctor1 = ConstructorTestHelper.class.getConstructor(
new Class[0]);
ctor2 = ConstructorTestHelper.class.getConstructor(Object.class);
} catch (Exception e) {
fail("Exception during equals test : " + e.getMessage());
}
assertTrue("Different Contructors returned equal", !ctor1.equals(ctor2));
}
public void test_getDeclaringClass() {
boolean val = false;
try {
Class<? extends ConstructorTestHelper> pclass = new ConstructorTestHelper().getClass();
Constructor<? extends ConstructorTestHelper> ctor = pclass.getConstructor(new Class[0]);
val = ctor.getDeclaringClass().equals(pclass);
} catch (Exception e) {
fail("Exception during test : " + e.getMessage());
}
assertTrue("Returned incorrect declaring class", val);
}
public void test_getExceptionTypes() {
// Test for method java.lang.Class []
// java.lang.reflect.Constructor.getExceptionTypes()
Class[] exceptions = null;
Class<? extends IndexOutOfBoundsException> ex = null;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(new Class[0]);
exceptions = ctor.getExceptionTypes();
ex = new IndexOutOfBoundsException().getClass();
} catch (Exception e) {
fail("Exception during test : " + e.getMessage());
}
assertEquals("Returned exception list of incorrect length",
1, exceptions.length);
assertTrue("Returned incorrect exception", exceptions[0].equals(ex));
}
public void test_getModifiers() {
// Test for method int java.lang.reflect.Constructor.getModifiers()
int mod = 0;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(new Class[0]);
mod = ctor.getModifiers();
assertTrue("Returned incorrect modifers for public ctor",
((mod & Modifier.PUBLIC) == Modifier.PUBLIC)
&& ((mod & Modifier.PRIVATE) == 0));
} catch (NoSuchMethodException e) {
fail("Exception during test : " + e.getMessage());
}
try {
Class[] cl = { int.class };
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getDeclaredConstructor(cl);
mod = ctor.getModifiers();
assertTrue("Returned incorrect modifers for private ctor",
((mod & Modifier.PRIVATE) == Modifier.PRIVATE)
&& ((mod & Modifier.PUBLIC) == 0));
} catch (NoSuchMethodException e) {
fail("Exception during test : " + e.getMessage());
}
try {
Class[] cl = { long.class };
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getDeclaredConstructor(cl);
mod = ctor.getModifiers();
assertTrue("Returned incorrect modifers for private ctor",
((mod & Modifier.PROTECTED) == Modifier.PROTECTED)
&& ((mod & Modifier.PUBLIC) == 0));
} catch (NoSuchMethodException e) {
fail("NoSuchMethodException during test : " + e.getMessage());
}
}
public void test_getName() {
// Test for method java.lang.String
// java.lang.reflect.Constructor.getName()
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(new Class[0]);
assertTrue(
"Returned incorrect name: " + ctor.getName(),
ctor
.getName()
.equals(
"org.apache.harmony.tests.java.lang.reflect.ConstructorTest$ConstructorTestHelper"));
} catch (Exception e) {
fail("Exception obtaining contructor : " + e.getMessage());
}
}
public void test_getParameterTypes() {
// Test for method java.lang.Class []
// java.lang.reflect.Constructor.getParameterTypes()
Class[] types = null;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(new Class[0]);
types = ctor.getParameterTypes();
} catch (Exception e) {
fail("Exception during getParameterTypes test:"
+ e.toString());
}
assertEquals("Incorrect parameter returned", 0, types.length);
Class[] parms = null;
try {
parms = new Class[1];
parms[0] = new Object().getClass();
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(parms);
types = ctor.getParameterTypes();
} catch (Exception e) {
fail("Exception during getParameterTypes test:"
+ e.toString());
}
assertTrue("Incorrect parameter returned", types[0].equals(parms[0]));
}
@SuppressWarnings("unchecked")
public void test_getGenericParameterTypes() {
Type[] types = null;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper()
.getClass().getConstructor(new Class[0]);
types = ctor.getGenericParameterTypes();
} catch (Exception e) {
fail("Exception during getParameterTypes test:" + e.toString());
}
assertEquals("Incorrect parameter returned", 0, types.length);
Class<?>[] parms = null;
try {
parms = new Class[] {Object.class};
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper()
.getClass().getConstructor(parms);
types = ctor.getGenericParameterTypes();
} catch (Exception e) {
fail("Exception during getParameterTypes test:" + e.toString());
}
assertTrue("Incorrect parameter returned", types[0].equals(parms[0]));
try {
Constructor<GenericConstructorTestHelper> constructor = GenericConstructorTestHelper.class
.getConstructor(Object.class, Object.class);
types = constructor.getGenericParameterTypes();
} catch (Exception e) {
fail("Exception during getParameterTypes test:" + e.toString());
}
assertEquals("Wrong number of parameter types returned", 2,
types.length);
assertEquals("Wrong number of parameter types returned", "T",
((TypeVariable)types[0]).getName());
assertEquals("Wrong number of parameter types returned", "S",
((TypeVariable)types[1]).getName());
}
@SuppressWarnings("unchecked")
public void test_getGenericExceptionTypes() {
Type[] types = null;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper()
.getClass().getConstructor(new Class[0]);
types = ctor.getGenericExceptionTypes();
} catch (Exception e) {
fail("Exception during getGenericExceptionTypes test:" + e.toString());
}
assertEquals("Wrong number of exception types returned", 1, types.length);
try {
Constructor<GenericConstructorTestHelper> constructor = GenericConstructorTestHelper.class
.getConstructor();
types = constructor.getGenericExceptionTypes();
} catch (Exception e) {
fail("Exception during getGenericExceptionTypes test:"
+ e.toString());
}
assertEquals("Wrong number of exception types returned", 1,
types.length);
assertEquals("Wrong exception name returned.", "E",
((TypeVariable)types[0]).getName());
}
public void test_newInstance$Ljava_lang_Object() {
// Test for method java.lang.Object
// java.lang.reflect.Constructor.newInstance(java.lang.Object [])
ConstructorTestHelper test = null;
try {
Constructor<? extends ConstructorTestHelper> ctor = new ConstructorTestHelper().getClass()
.getConstructor(new Class[0]);
test = ctor.newInstance((Object[])null);
} catch (Exception e) {
fail("Failed to create instance : " + e.getMessage());
}
assertEquals("improper instance created", 99, test.check());
}
public void test_toString() {
// Test for method java.lang.String
// java.lang.reflect.Constructor.toString()
Class[] parms = null;
Constructor<? extends ConstructorTestHelper> ctor = null;
try {
parms = new Class[1];
parms[0] = new Object().getClass();
ctor = new ConstructorTestHelper().getClass().getConstructor(parms);
} catch (Exception e) {
fail("Exception during getParameterTypes test:"
+ e.toString());
}
assertTrue(
"Returned incorrect string representation: " + ctor.toString(),
ctor
.toString()
.equals(
"public org.apache.harmony.tests.java.lang.reflect.ConstructorTest$ConstructorTestHelper(java.lang.Object)"));
}
public void test_getConstructor() throws Exception {
// Passing new Class[0] should be equivalent to (Class[]) null.
Class<ConstructorTestHelper> c2 = ConstructorTestHelper.class;
assertEquals(c2.getConstructor(new Class[0]), c2.getConstructor((Class[]) null));
assertEquals(c2.getDeclaredConstructor(new Class[0]),
c2.getDeclaredConstructor((Class[]) null));
// We can get a non-public constructor via getDeclaredConstructor...
Class<NoPublicConstructorTestHelper> c1 = NoPublicConstructorTestHelper.class;
c1.getDeclaredConstructor((Class[]) null);
// ...but not with getConstructor (which only returns public constructors).
try {
c1.getConstructor((Class[]) null);
fail("Should throw NoSuchMethodException");
} catch (NoSuchMethodException ex) {
// Expected.
}
}
/**
* Sets up the fixture, for example, open a network connection. This method
* is called before a test is executed.
*/
protected void setUp() {
}
/**
* Tears down the fixture, for example, close a network connection. This
* method is called after a test is executed.
*/
protected void tearDown() {
}
}