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//===- llvm/unittest/Support/CommandLineTest.cpp - CommandLine tests ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/CommandLine.h"
#include "llvm/Config/config.h"
#include "gtest/gtest.h"
#include <stdlib.h>
#include <string>
using namespace llvm;
namespace {
class TempEnvVar {
public:
TempEnvVar(const char *name, const char *value)
: name(name) {
const char *old_value = getenv(name);
EXPECT_EQ(NULL, old_value) << old_value;
#if HAVE_SETENV
setenv(name, value, true);
#else
# define SKIP_ENVIRONMENT_TESTS
#endif
}
~TempEnvVar() {
#if HAVE_SETENV
// Assume setenv and unsetenv come together.
unsetenv(name);
#endif
}
private:
const char *const name;
};
cl::OptionCategory TestCategory("Test Options", "Description");
cl::opt<int> TestOption("test-option", cl::desc("old description"));
TEST(CommandLineTest, ModifyExisitingOption) {
const char Description[] = "New description";
const char ArgString[] = "new-test-option";
const char ValueString[] = "Integer";
StringMap<cl::Option*> Map;
cl::getRegisteredOptions(Map);
ASSERT_TRUE(Map.count("test-option") == 1) <<
"Could not find option in map.";
cl::Option *Retrieved = Map["test-option"];
ASSERT_EQ(&TestOption, Retrieved) << "Retrieved wrong option.";
ASSERT_EQ(&cl::GeneralCategory,Retrieved->Category) <<
"Incorrect default option category.";
Retrieved->setCategory(TestCategory);
ASSERT_EQ(&TestCategory,Retrieved->Category) <<
"Failed to modify option's option category.";
Retrieved->setDescription(Description);
ASSERT_STREQ(Retrieved->HelpStr, Description) <<
"Changing option description failed.";
Retrieved->setArgStr(ArgString);
ASSERT_STREQ(ArgString, Retrieved->ArgStr) <<
"Failed to modify option's Argument string.";
Retrieved->setValueStr(ValueString);
ASSERT_STREQ(Retrieved->ValueStr, ValueString) <<
"Failed to modify option's Value string.";
Retrieved->setHiddenFlag(cl::Hidden);
ASSERT_EQ(cl::Hidden, TestOption.getOptionHiddenFlag()) <<
"Failed to modify option's hidden flag.";
}
#ifndef SKIP_ENVIRONMENT_TESTS
const char test_env_var[] = "LLVM_TEST_COMMAND_LINE_FLAGS";
cl::opt<std::string> EnvironmentTestOption("env-test-opt");
TEST(CommandLineTest, ParseEnvironment) {
TempEnvVar TEV(test_env_var, "-env-test-opt=hello");
EXPECT_EQ("", EnvironmentTestOption);
cl::ParseEnvironmentOptions("CommandLineTest", test_env_var);
EXPECT_EQ("hello", EnvironmentTestOption);
}
// This test used to make valgrind complain
// ("Conditional jump or move depends on uninitialised value(s)")
//
// Warning: Do not run any tests after this one that try to gain access to
// registered command line options because this will likely result in a
// SEGFAULT. This can occur because the cl::opt in the test below is declared
// on the stack which will be destroyed after the test completes but the
// command line system will still hold a pointer to a deallocated cl::Option.
TEST(CommandLineTest, ParseEnvironmentToLocalVar) {
// Put cl::opt on stack to check for proper initialization of fields.
cl::opt<std::string> EnvironmentTestOptionLocal("env-test-opt-local");
TempEnvVar TEV(test_env_var, "-env-test-opt-local=hello-local");
EXPECT_EQ("", EnvironmentTestOptionLocal);
cl::ParseEnvironmentOptions("CommandLineTest", test_env_var);
EXPECT_EQ("hello-local", EnvironmentTestOptionLocal);
}
#endif // SKIP_ENVIRONMENT_TESTS
TEST(CommandLineTest, UseOptionCategory) {
cl::opt<int> TestOption2("test-option", cl::cat(TestCategory));
ASSERT_EQ(&TestCategory,TestOption2.Category) << "Failed to assign Option "
"Category.";
}
} // anonymous namespace
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