test/hotspot/gtest/runtime/test_classPrinter.cpp

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#include "precompiled.hpp"
#include "classfile/classPrinter.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/javaThread.hpp"
#include "utilities/ostream.hpp"
#include "unittest.hpp"

TEST_VM(ClassPrinter, print_classes) {
  JavaThread* THREAD = JavaThread::current();
  ThreadInVMfromNative invm(THREAD);
  ResourceMark rm;

  stringStream ss;
  ClassPrinter::print_classes("java/lang/Object", 0x03, &ss);
  const char* output = ss.freeze();

  ASSERT_TRUE(strstr(output, "class java/lang/Object loader data:") != NULL) << "must find java/lang/Object";
  ASSERT_TRUE(strstr(output, "method wait : (J)V") != NULL) << "must find java/lang/Object::wait";
  ASSERT_TRUE(strstr(output, "method finalize : ()V\n   0 return") != NULL) << "must find java/lang/Object::finalize and disasm";
}

TEST_VM(ClassPrinter, print_methods) {
  JavaThread* THREAD = JavaThread::current();
  ThreadInVMfromNative invm(THREAD);
  ResourceMark rm;

  stringStream s1;
  ClassPrinter::print_methods("*ang/Object*", "wait", 0x1, &s1);
  const char* o1 = s1.freeze();
  ASSERT_TRUE(strstr(o1, "class java/lang/Object loader data:") != NULL) << "must find java/lang/Object";
  ASSERT_TRUE(strstr(o1, "method wait : (J)V")    != NULL) << "must find java/lang/Object::wait(long)";
  ASSERT_TRUE(strstr(o1, "method wait : ()V")     != NULL) << "must find java/lang/Object::wait()";
  ASSERT_TRUE(strstr(o1, "method finalize : ()V") == NULL) << "must not find java/lang/Object::finalize";

  stringStream s2;
  ClassPrinter::print_methods("j*ang/Object*", "wait:(*J*)V", 0x1, &s2);
  const char* o2 = s2.freeze();
  ASSERT_TRUE(strstr(o2, "class java/lang/Object loader data:") != NULL) << "must find java/lang/Object";
  ASSERT_TRUE(strstr(o2, "method wait : (J)V")  != NULL) << "must find java/lang/Object::wait(long)";
  ASSERT_TRUE(strstr(o2, "method wait : (JI)V") != NULL) << "must find java/lang/Object::wait(long,int)";
  ASSERT_TRUE(strstr(o2, "method wait : ()V")   == NULL) << "must not find java/lang/Object::wait()";
}