unittests/Support/ProcessTest.cpp

   1 //===- unittest/Support/ProcessTest.cpp -----------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/Process.h"
  11 #include "gtest/gtest.h"
  12
  13 #ifdef LLVM_ON_WIN32
  14 #include <windows.h>
  15 #endif
  16
  17 namespace {
  18
  19 using namespace llvm;
  20 using namespace sys;
  21
  22 TEST(ProcessTest, SelfProcess) {
  23   EXPECT_TRUE(process::get_self());
  24   EXPECT_EQ(process::get_self(), process::get_self());
  25
  26 #if defined(LLVM_ON_UNIX)
  27   EXPECT_EQ(getpid(), process::get_self()->get_id());
  28 #elif defined(LLVM_ON_WIN32)
  29   EXPECT_EQ(GetCurrentProcessId(), process::get_self()->get_id());
  30 #endif
  31
  32   EXPECT_LT(1u, process::get_self()->page_size());
  33
  34   EXPECT_LT(TimeValue::MinTime, process::get_self()->get_user_time());
  35   EXPECT_GT(TimeValue::MaxTime, process::get_self()->get_user_time());
  36   EXPECT_LT(TimeValue::MinTime, process::get_self()->get_system_time());
  37   EXPECT_GT(TimeValue::MaxTime, process::get_self()->get_system_time());
  38   EXPECT_LT(TimeValue::MinTime, process::get_self()->get_wall_time());
  39   EXPECT_GT(TimeValue::MaxTime, process::get_self()->get_wall_time());
  40 }
  41
  42 TEST(ProcessTest, GetRandomNumberTest) {
  43   const unsigned r1 = Process::GetRandomNumber();
  44   const unsigned r2 = Process::GetRandomNumber();
  45   // It should be extremely unlikely that both r1 and r2 are 0.
  46   EXPECT_NE((r1 | r2), 0u);
  47 }
  48
  49 #ifdef _MSC_VER
  50 #define setenv(name, var, ignore) _putenv_s(name, var)
  51 #endif
  52
  53 #if HAVE_SETENV || _MSC_VER
  54 TEST(ProcessTest, Basic) {
  55   setenv("__LLVM_TEST_ENVIRON_VAR__", "abc", true);
  56   Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
  57   EXPECT_TRUE(val.hasValue());
  58   EXPECT_STREQ("abc", val->c_str());
  59 }
  60
  61 TEST(ProcessTest, None) {
  62   Optional<std::string> val(
  63       Process::GetEnv("__LLVM_TEST_ENVIRON_NO_SUCH_VAR__"));
  64   EXPECT_FALSE(val.hasValue());
  65 }
  66 #endif
  67
  68 #ifdef LLVM_ON_WIN32
  69 TEST(ProcessTest, Wchar) {
  70   SetEnvironmentVariableW(L"__LLVM_TEST_ENVIRON_VAR__", L"abcdefghijklmnopqrs");
  71   Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
  72   EXPECT_TRUE(val.hasValue());
  73   EXPECT_STREQ("abcdefghijklmnopqrs", val->c_str());
  74 }
  75 #endif
  76
  77 } // end anonymous namespace