/*
* Copyright ( c ) 2013 , 2016 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* 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 ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
import java.io.*;
import java.util.*;
import java.lang.annotation.*;
import java.lang.reflect.InvocationTargetException;
/**
* { @ code JavapTester } is an abstract test - driver that provides the logic
* to execute test - cases , grouped by test classes .
* A test class is a main class extending this class , that instantiate
* itself , and calls the { @ link run } method , passing any command line
* arguments .
* < p >
* The { @ code run } method , expects arguments to identify test - case classes .
* A test - case class is a class extending the test class , and annotated
* with { @ code TestCase } .
* < p >
* If no test - cases are specified , the test class directory is searched for
* co - located test - case classes ( i . e . any class extending the test class ,
* annotated with { @ code TestCase } ) .
* < p >
* Besides serving to group test - cases , extending the driver allow
* setting up a test - case template , and possibly overwrite default
* test - driver behaviour .
*/
public abstract class JavapTester {
private static boolean debug = false ;
private static final PrintStream out = System.err;
private static final PrintStream err = System.err;
protected void run(String... args) throws Exception {
final File classesdir = new File(System.getProperty("test.classes" , "." ));
String[] classNames = args;
// If no test-cases are specified, we regard all co-located classes
// as potential test-cases.
if (args.length == 0 ) {
final String pattern = ".*\\.class" ;
final File classFiles[] = classesdir.listFiles(new FileFilter() {
public boolean accept(File f) {
return f.getName().matches(pattern);
}
});
ArrayList<String> names = new ArrayList<String>(classFiles.length);
for (File f : classFiles) {
String fname = f.getName();
names.add(fname.substring(0 , fname.length() -6 ));
}
classNames = names.toArray(new String[names.size()]);
} else {
debug = true ;
}
// Test-cases must extend the driver type, and be marked
// @TestCase. Other arguments (classes) are ignored.
// Test-cases are instantiated, and thereby executed.
for (String clname : classNames) {
try {
final Class tclass = Class .forName(clname);
if (!getClass().isAssignableFrom(tclass)) continue ;
TestCase anno = (TestCase) tclass.getAnnotation(TestCase.class );
if (anno == null ) continue ;
if (!debug) {
ignore i = (ignore) tclass.getAnnotation(ignore.class );
if (i != null ) {
out.println("Ignore: " + clname);
ignored++;
continue ;
}
}
out.println("TestCase: " + clname);
cases++;
JavapTester tc = (JavapTester) tclass.getConstructor().newInstance();
if (tc.errors > 0 ) {
error("" + tc.errors + " test points failed in " + clname);
errors += tc.errors - 1 ;
fcases++;
}
} catch (ReflectiveOperationException roe) {
error("Warning: " + clname + " - ReflectiveOperationException" );
roe.printStackTrace(err);
} catch (Exception unknown) {
error("Warning: " + clname + " - uncaught exception" );
unknown.printStackTrace(err);
}
}
String imsg = ignored > 0 ? " (" + ignored + " ignored)" : "" ;
if (errors > 0 )
throw new Error(errors + " error, in " + fcases + " of " + cases + " test-cases" + imsg);
else
err.println("" + cases + " test-cases executed" + imsg + ", no errors" );
}
/**
* Test - cases must be marked with the { @ code TestCase } annotation ,
* as well as extend { @ code JavapTester } ( or an driver extension
* specified as the first argument to the { @ code main ( ) } method .
*/
@Retention(RetentionPolicy.RUNTIME)
@interface TestCase { }
/**
* Individual test - cases failing due to product bugs , may temporarily
* be excluded by marking them like this , ( where " at - " is replaced by " @ " )
* at - ignore // 1234567: bug synopsis
*/
@Retention(RetentionPolicy.RUNTIME)
@interface ignore { }
/**
* Test - cases are classes extending { @ code JavapTester } , and
* calling { @ link setSrc } , followed by one or more invocations
* of { @ link verify } in the body of the constructor .
* < p >
* Sets a default test - case template , which is empty except
* for a key of { @ code " TESTCASE " } .
* Subclasses will typically call { @ code setSrc ( TestSource ) }
* to setup a useful test - case template .
*/
public JavapTester() {
this .testCase = this .getClass().getName();
src = new TestSource("TESTCASE" );
}
/**
* Set the top - level source template .
*/
protected JavapTester setSrc(TestSource src) {
this .src = src;
return this ;
}
/**
* Convenience method for calling { @ code innerSrc ( " TESTCASE " , . . . ) } .
*/
protected JavapTester setSrc(String... lines) {
return innerSrc("TESTCASE" , lines);
}
/**
* Convenience method for calling { @ code innerSrc ( key , new TestSource ( . . . ) ) } .
*/
protected JavapTester innerSrc(String key, String... lines) {
return innerSrc(key, new TestSource(lines));
}
/**
* Specialize the testcase template , setting replacement content
* for the specified key .
*/
protected JavapTester innerSrc(String key, TestSource content) {
if (src == null ) {
src = new TestSource(key);
}
src.setInner(key, content);
return this ;
}
/**
* On the first invocation , call { @ code execute ( ) } to compile
* the test - case source and process the resulting class ( se )
* into verifiable output .
* < p >
* Verify that the output matches each of the regular expressions
* given as argument .
* < p >
* Any failure to match constitutes a test failure , but doesn ' t
* abort the test - case .
* < p >
* Any exception ( e . g . bad regular expression syntax ) results in
* a test failure , and aborts the test - case .
*/
protected void verify(String... expect) {
if (!didExecute) {
try {
execute();
} catch (Exception ue) {
throw new Error(ue);
} finally {
didExecute = true ;
}
}
if (output == null ) {
error("output is null" );
return ;
}
for (String e: expect) {
// Escape regular expressions (to allow input to be literals).
// Notice, characters to be escaped are themselves identified
// using regular expressions
String rc[] = { "(" , ")" , "[" , "]" , "{" , "}" , "$" };
for (String c : rc) {
e = e.replace(c, "\\" + c);
}
// DEBUG: Uncomment this to test modulo constant pool index.
// e = e.replaceAll("#[0-9]{2}", "#[0-9]{2}");
if (!output.matches("(?s).*" + e + ".*" )) {
if (!didPrint) {
out.println(output);
didPrint = true ;
}
error("not matched: '" + e + "'" );
} else if (debug) {
out.println("matched: '" + e + "'" );
}
}
}
/**
* Calls { @ code writeTestFile ( ) } to write out the test - case source
* content to a file , then call { @ code compileTestFile ( ) } to
* compile it , and finally run the { @ link process } method to produce
* verifiable output . The default { @ code process } method runs javap .
* < p >
* If an exception occurs , it results in a test failure , and
* aborts the test - case .
*/
protected void execute() throws IOException {
err.println("TestCase: " + testCase);
writeTestFile();
compileTestFile();
process();
}
/**
* Generate java source from test - case .
* TBD : change to use javaFileObject , possibly make
* this class extend JavaFileObject .
*/
protected void writeTestFile() throws IOException {
javaFile = new File("Test.java" );
FileWriter fw = new FileWriter(javaFile);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter pw = new PrintWriter(bw);
for (String line : src) {
pw.println(line);
if (debug) out.println(line);
}
pw.close();
}
/**
* Compile the Java source code .
*/
protected void compileTestFile() {
String path = javaFile.getPath();
String params[] = {"-g" , path };
int rc = com.sun.tools.javac.Main.compile(params);
if (rc != 0 )
throw new Error("compilation failed. rc=" + rc);
classFile = new File(path.substring(0 , path.length() - 5 ) + ".class" );
}
/**
* Process class file to generate output for verification .
* The default implementation simply runs javap . This might be
* overwritten to generate output in a different manner .
*/
protected void process() {
String testClasses = "." ; //System.getProperty("test.classes", ".");
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
String[] args = { "-v" , "-classpath" , testClasses, "Test" };
int rc = com.sun.tools.javap.Main.run(args, pw);
if (rc != 0 )
throw new Error("javap failed. rc=" + rc);
pw.close();
output = sw.toString();
if (debug) {
out.println(output);
didPrint = true ;
}
}
private String testCase;
private TestSource src;
private File javaFile = null ;
private File classFile = null ;
private String output = null ;
private boolean didExecute = false ;
private boolean didPrint = false ;
protected void error(String msg) {
err.println("Error: " + msg);
errors++;
}
private int cases;
private int fcases;
private int errors;
private int ignored;
/**
* The TestSource class provides a simple container for
* test cases . It contains an array of source code lines ,
* where zero or more lines may be markers for nested lines .
* This allows representing templates , with specialization .
* < P >
* This may be generalized to support more advance combo
* tests , but presently it ' s only used with a static template ,
* and one level of specialization .
*/
public class TestSource implements Iterable<String> {
private String[] lines;
private Hashtable<String, TestSource> innerSrc;
public TestSource(String... lines) {
this .lines = lines;
innerSrc = new Hashtable<String, TestSource>();
}
public void setInner(String key, TestSource inner) {
innerSrc.put(key, inner);
}
public void setInner(String key, String... lines) {
innerSrc.put(key, new TestSource(lines));
}
public Iterator<String> iterator() {
return new LineIterator();
}
private class LineIterator implements Iterator<String> {
int nextLine = 0 ;
Iterator<String> innerIt = null ;
public boolean hasNext() {
return nextLine < lines.length;
}
public String next() {
if (!hasNext()) throw new NoSuchElementException();
String str = lines[nextLine];
TestSource inner = innerSrc.get(str);
if (inner == null ) {
nextLine++;
return str;
}
if (innerIt == null ) {
innerIt = inner.iterator();
}
if (innerIt.hasNext()) {
return innerIt.next();
}
innerIt = null ;
nextLine++;
return next();
}
public void remove() {
throw new UnsupportedOperationException();
}
}
}
}
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