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//===-- Unittests for getenv ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/stdlib/getenv.h"
#include "test/IntegrationTest/test.h"
static bool my_streq(const char *lhs, const char *rhs) {
if (lhs == rhs)
return true;
if (((lhs == static_cast<char *>(nullptr)) &&
(rhs != static_cast<char *>(nullptr))) ||
((lhs != static_cast<char *>(nullptr)) &&
(rhs == static_cast<char *>(nullptr)))) {
return false;
}
const char *l, *r;
for (l = lhs, r = rhs; *l != '\0' && *r != '\0'; ++l, ++r)
if (*l != *r)
return false;
return *l == '\0' && *r == '\0';
}
TEST_MAIN([[maybe_unused]] int argc, [[maybe_unused]] char **argv,
[[maybe_unused]] char **envp) {
ASSERT_TRUE(
my_streq(LIBC_NAMESPACE::getenv(""), static_cast<char *>(nullptr)));
ASSERT_TRUE(
my_streq(LIBC_NAMESPACE::getenv("="), static_cast<char *>(nullptr)));
ASSERT_TRUE(my_streq(LIBC_NAMESPACE::getenv("MISSING ENV VARIABLE"),
static_cast<char *>(nullptr)));
ASSERT_FALSE(
my_streq(LIBC_NAMESPACE::getenv("PATH"), static_cast<char *>(nullptr)));
ASSERT_TRUE(my_streq(LIBC_NAMESPACE::getenv("FRANCE"), "Paris"));
ASSERT_FALSE(my_streq(LIBC_NAMESPACE::getenv("FRANCE"), "Berlin"));
ASSERT_TRUE(my_streq(LIBC_NAMESPACE::getenv("GERMANY"), "Berlin"));
ASSERT_TRUE(
my_streq(LIBC_NAMESPACE::getenv("FRANC"), static_cast<char *>(nullptr)));
ASSERT_TRUE(my_streq(LIBC_NAMESPACE::getenv("FRANCE1"),
static_cast<char *>(nullptr)));
return 0;
}
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