void test(String[] opts, String className) throws Exception {
count++;
System.err.println("Test " + count + " " + Arrays.asList(opts) + " " + className);
Path testSrcDir = Paths.get(System.getProperty("test.src"));
Path testClassesDir = Paths.get(System.getProperty("test.classes"));
Path classes = Paths.get("classes." + count);
classes.createDirectory();
Context ctx = new Context();
PathFileManager fm = new JavacPathFileManager(ctx, true, null);
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
List<String> options = new ArrayList<String>();
options.addAll(Arrays.asList(opts));
options.addAll(Arrays.asList("-verbose", "-XDverboseCompilePolicy", "-d", classes.toString()));
Iterable<? extends JavaFileObject> compilationUnits =
fm.getJavaFileObjects(testSrcDir.resolve(className + ".java"));
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
JavaCompiler.CompilationTask t =
compiler.getTask(out, fm, null, options, null, compilationUnits);
boolean ok = t.call();
System.err.println(sw.toString());
if (!ok) {
throw new Exception("compilation failed");
}
File expect = new File("classes." + count + "/" + className + ".class");
if (!expect.exists()) throw new Exception("expected file not found: " + expect);
long expectedSize = new File(testClassesDir.toString(), className + ".class").length();
long actualSize = expect.length();
if (expectedSize != actualSize)
throw new Exception("wrong size found: " + actualSize + "; expected: " + expectedSize);
}
public void run() throws Exception {
File rtDir = new File("rt.dir");
File javaHome = new File(System.getProperty("java.home"));
if (javaHome.getName().equals("jre")) javaHome = javaHome.getParentFile();
File rtJar = new File(new File(new File(javaHome, "jre"), "lib"), "rt.jar");
expand(rtJar, rtDir);
String[] rtDir_opts = {
"-bootclasspath", rtDir.toString(),
"-classpath", "",
"-sourcepath", "",
"-extdirs", ""
};
test(rtDir_opts, "HelloPathWorld");
if (isJarFileSystemAvailable()) {
String[] rtJar_opts = {
"-bootclasspath", rtJar.toString(),
"-classpath", "",
"-sourcepath", "",
"-extdirs", ""
};
test(rtJar_opts, "HelloPathWorld");
String[] default_opts = {};
test(default_opts, "HelloPathWorld");
// finally, a non-trivial program
test(default_opts, "CompileTest");
} else System.err.println("jar file system not available: test skipped");
}
void copy(InputStream in, File dest) throws IOException {
dest.getParentFile().mkdirs();
OutputStream out = new BufferedOutputStream(new FileOutputStream(dest));
try {
byte[] data = new byte[8192];
int n;
while ((n = in.read(data, 0, data.length)) > 0) out.write(data, 0, n);
} finally {
out.close();
in.close();
}
}