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package org.apache.harmony.tests.java.lang.reflect;
import dalvik.annotation.AndroidOnly;
import dalvik.system.DexFile;
import junit.framework.TestCase;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.GenericSignatureFormatError;
import java.lang.reflect.TypeVariable;
import tests.support.Support_ClassLoader;
public class GenericSignatureFormatErrorTest extends TestCase{
public void test_Constructor() {
assertNotNull(new GenericSignatureFormatError());
}
public void test_readResource() throws Exception {
File tf = File.createTempFile("classes", ".dex");
// System.out.println("GenericSignatureFormatErrorTest:"
// +tf.getAbsolutePath()+", canRead: "+tf.canRead()
// +", canWrite: "+tf.canWrite());
InputStream is = this.getClass().getResourceAsStream("/resources/dex1.bytes");
assertNotNull(is);
}
@AndroidOnly("Uses Android specific class dalvik.system.DexFile " +
"for loading classes.")
// SideEffect: strange issue (exception: 'could not open dex file',
// dalvikvm: 'waitpid failed' log msg - only occurs when @SideEffect is removed
// and this test is run via running tests.luni.AllTestsLang TestSuite
public void test_signatureFormatError() throws Exception {
/*
* dex1.bytes is a jar file with a classes.dex in it.
* the classes.dex was javac'ed, dx'ed and patched
* with the following java file:
*
* package demo;
* public class HelloWorld<U> {
* public HelloWorld(U t) {}
* }
*
* patch:
* the string constant (class generics signature string)
* "<U:" was changed to "<<:"
*
*/
File tf = File.createTempFile("classes", ".dex");
// System.out.println("GenericSignatureFormatErrorTest:" +
// tf.getAbsolutePath() + ", canRead: " + tf.canRead() +
// ", canWrite: "+tf.canWrite());
InputStream is = this.getClass().getResourceAsStream("/resources/dex1.bytes");
assertNotNull(is);
OutputStream fos = new FileOutputStream(tf);
copy(is, fos);
fos.flush();
fos.close();
// class signature string "<U:" was changed to "<<:"
//System.out.println("file length:"+tf.length());
try {
// Was:
// DexFile df = new DexFile(tf);
// Class clazz = df.loadClass("demo/HelloWorld", this.getClass().getClassLoader());
ClassLoader cl = Support_ClassLoader.getInstance(tf.toURL(),
getClass().getClassLoader());
Class clazz = cl.loadClass("demo/HelloWorld");
TypeVariable[] tvs = clazz.getTypeParameters();
fail("expecting a GenericSignatureFormatError");
// for (TypeVariable tv : tvs) {
// System.out.println("tv:"+tv.toString());
// }
} catch (GenericSignatureFormatError gsfe) {
// expected
}
}
private void copy(InputStream is, OutputStream os) {
try {
int b;
while ((b = is.read()) != -1) {
os.write(b);
}
is.close();
} catch (IOException ex) {
throw new RuntimeException("io error", ex);
}
}
}
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