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6940aac2e2
An environment variable can be in one of three states: 1. undefined. 2. defined with a non-empty value. 3. defined but with an empty value. The windows implementation did not support case 3 (it was not handling errors). The Linux implementation is already correct. Differential Revision: https://reviews.llvm.org/D36394 llvm-svn: 311174
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
//===- unittest/Support/ProcessTest.cpp -----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Process.h"
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#include "gtest/gtest.h"
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#ifdef LLVM_ON_WIN32
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#include <windows.h>
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#endif
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namespace {
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using namespace llvm;
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using namespace sys;
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TEST(ProcessTest, GetRandomNumberTest) {
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const unsigned r1 = Process::GetRandomNumber();
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const unsigned r2 = Process::GetRandomNumber();
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// It should be extremely unlikely that both r1 and r2 are 0.
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EXPECT_NE((r1 | r2), 0u);
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}
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#ifdef _MSC_VER
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#define setenv(name, var, ignore) _putenv_s(name, var)
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#endif
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#if HAVE_SETENV || _MSC_VER
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TEST(ProcessTest, Basic) {
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setenv("__LLVM_TEST_ENVIRON_VAR__", "abc", true);
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("abc", val->c_str());
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}
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TEST(ProcessTest, None) {
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Optional<std::string> val(
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Process::GetEnv("__LLVM_TEST_ENVIRON_NO_SUCH_VAR__"));
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EXPECT_FALSE(val.hasValue());
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}
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#endif
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#ifdef LLVM_ON_WIN32
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TEST(ProcessTest, EmptyVal) {
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SetEnvironmentVariableA("__LLVM_TEST_ENVIRON_VAR__", "");
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("", val->c_str());
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}
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TEST(ProcessTest, Wchar) {
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SetEnvironmentVariableW(L"__LLVM_TEST_ENVIRON_VAR__", L"abcdefghijklmnopqrs");
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("abcdefghijklmnopqrs", val->c_str());
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}
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#endif
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} // end anonymous namespace
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