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 18 using namespace llvm; 19 20 namespace { 21 22 class 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 48 const char test_env_var[] = "LLVM_TEST_COMMAND_LINE_FLAGS"; 49 50 cl::opt<std::string> EnvironmentTestOption("env-test-opt"); 51 TEST(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 #endif // SKIP_ENVIRONMENT_TESTS 59 60 } // anonymous namespace 61
