1//===- llvm/unittest/Support/CommandLineTest.cpp - CommandLine tests ------===// 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/CommandLine.h" 11#include "llvm/Config/config.h" 12 13#include "gtest/gtest.h" 14 15#include <string> 16#include <stdlib.h> 17 18using namespace llvm; 19 20namespace { 21 22class TempEnvVar { 23 public: 24 TempEnvVar(const char *name, const char *value) 25 : name(name) { 26 const char *old_value = getenv(name); 27 EXPECT_EQ(NULL, old_value) << old_value; 28#if HAVE_SETENV 29 setenv(name, value, true); 30#else 31# define SKIP_ENVIRONMENT_TESTS 32#endif 33 } 34 35 ~TempEnvVar() { 36#if HAVE_SETENV 37 // Assume setenv and unsetenv come together. 38 unsetenv(name); 39#endif 40 } 41 42 private: 43 const char *const name; 44}; 45 46#ifndef SKIP_ENVIRONMENT_TESTS 47 48const char test_env_var[] = "LLVM_TEST_COMMAND_LINE_FLAGS"; 49 50cl::opt<std::string> EnvironmentTestOption("env-test-opt"); 51TEST(CommandLineTest, ParseEnvironment) { 52 TempEnvVar TEV(test_env_var, "-env-test-opt=hello"); 53 EXPECT_EQ("", EnvironmentTestOption); 54 cl::ParseEnvironmentOptions("CommandLineTest", test_env_var); 55 EXPECT_EQ("hello", EnvironmentTestOption); 56} 57 58// This test used to make valgrind complain 59// ("Conditional jump or move depends on uninitialised value(s)") 60TEST(CommandLineTest, ParseEnvironmentToLocalVar) { 61 // Put cl::opt on stack to check for proper initialization of fields. 62 cl::opt<std::string> EnvironmentTestOptionLocal("env-test-opt-local"); 63 TempEnvVar TEV(test_env_var, "-env-test-opt-local=hello-local"); 64 EXPECT_EQ("", EnvironmentTestOptionLocal); 65 cl::ParseEnvironmentOptions("CommandLineTest", test_env_var); 66 EXPECT_EQ("hello-local", EnvironmentTestOptionLocal); 67} 68 69#endif // SKIP_ENVIRONMENT_TESTS 70 71} // anonymous namespace 72