text: // Copyright 2014 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // A crazy linker test to test crazy_context_set_java_vm().
  
  #include <jni.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <crazy_linker.h>
  
  #include "test_util.h"
  
  #define VARNAME "TEST_VAR"
  
  static const char kJniLibName[] = "libcrazy_linker_tests_libjni_lib.so";
  static void* kJavaVM = (void*)0xdeadcafe;
  
  int main() {
    crazy_context_t* context = crazy_context_create();
    crazy_library_t* library;
  
    // Expect to find the library in the same directory than this executable.
    crazy_add_search_path_for_address((void*)&main);
  
    crazy_set_java_vm(kJavaVM, JNI_VERSION_1_2);
  
    // Load libjni_lib.so, this should invoke its JNI_OnLoad() function
    // automatically.
    setenv(VARNAME, "INIT", 1);
    if (!crazy_library_open(&library, kJniLibName, context))
      Panic("Could not open library: %s\n", crazy_context_get_error(context));
  
    const char* env = getenv(VARNAME);
    if (strcmp(env, "LOADED"))
      Panic("JNI_OnLoad() hook was not called! %s is %s\n", VARNAME, env);
  
    crazy_library_close(library);
    env = getenv(VARNAME);
    if (strcmp(env, "UNLOADED"))
      Panic("JNI_OnUnload() hook was not called! %s is %s\n", VARNAME, env);
  
    // Now, change the minimum JNI version to JNI_VERSION_1_6, which should
    // prevent loading the library properly, since it only supports 1.2.
    crazy_set_java_vm(kJavaVM, JNI_VERSION_1_6);
  
    setenv(VARNAME, "INIT", 1);
    if (crazy_library_open(&library, kJniLibName, context))
      Panic("Could load the library with JNI_VERSION_1_6 > JNI_VERSION_1_2.");
  
    // Disable the feature, this shall load the library, but not call the
    // JNI_OnLoad() hook.
    crazy_set_java_vm(nullptr, 0);
  
    setenv(VARNAME, "INIT", 1);
    if (!crazy_library_open(&library, kJniLibName, context))
      Panic("Could not load the library without a JavaVM handle !?\n");
  
    env = getenv(VARNAME);
    if (strcmp(env, "INIT"))
      Panic("JNI_OnLoad() was called, %s is %s (expected INIT)\n", VARNAME, env);
  
    crazy_library_close(library);
    env = getenv(VARNAME);
    if (strcmp(env, "INIT"))
      Panic(
          "JNI_OnUnload() was called, %s is %s (expected INIT)\n", VARNAME, env);
  
    crazy_context_destroy(context);
  
    return 0;
  }
  