src/util_test.cc

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "util.h"

#include <type_traits>

#include "test.h"

using namespace std;

namespace {

void CanonicalizePath(string* path) {
  uint64_t unused;
  ::CanonicalizePath(path, &unused);
}

}  // namespace

TEST(CanonicalizePath, PathSamples) {
  string path;

  CanonicalizePath(&path);
  EXPECT_EQ("", path);

  path = "foo.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo.h", path);

  path = "./foo.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo.h", path);

  path = "./foo/./bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/bar.h", path);

  path = "./x/foo/../bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("x/bar.h", path);

  path = "./x/foo/../../bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("bar.h", path);

  path = "foo//bar";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/bar", path);

  path = "foo//.//..///bar";
  CanonicalizePath(&path);
  EXPECT_EQ("bar", path);

  path = "./x/../foo/../../bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("../bar.h", path);

  path = "foo/./.";
  CanonicalizePath(&path);
  EXPECT_EQ("foo", path);

  path = "foo/bar/..";
  CanonicalizePath(&path);
  EXPECT_EQ("foo", path);

  path = "foo/.hidden_bar";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/.hidden_bar", path);

  path = "/foo";
  CanonicalizePath(&path);
  EXPECT_EQ("/foo", path);

  path = "//foo";
  CanonicalizePath(&path);
#ifdef _WIN32
  EXPECT_EQ("//foo", path);
#else
  EXPECT_EQ("/foo", path);
#endif

  path = "..";
  CanonicalizePath(&path);
  EXPECT_EQ("..", path);

  path = "../";
  CanonicalizePath(&path);
  EXPECT_EQ("..", path);

  path = "../foo";
  CanonicalizePath(&path);
  EXPECT_EQ("../foo", path);

  path = "../foo/";
  CanonicalizePath(&path);
  EXPECT_EQ("../foo", path);

  path = "../..";
  CanonicalizePath(&path);
  EXPECT_EQ("../..", path);

  path = "../../";
  CanonicalizePath(&path);
  EXPECT_EQ("../..", path);

  path = "./../";
  CanonicalizePath(&path);
  EXPECT_EQ("..", path);

  path = "/..";
  CanonicalizePath(&path);
  EXPECT_EQ("/..", path);

  path = "/../";
  CanonicalizePath(&path);
  EXPECT_EQ("/..", path);

  path = "/../..";
  CanonicalizePath(&path);
  EXPECT_EQ("/../..", path);

  path = "/../../";
  CanonicalizePath(&path);
  EXPECT_EQ("/../..", path);

  path = "/";
  CanonicalizePath(&path);
  EXPECT_EQ("/", path);

  path = "/foo/..";
  CanonicalizePath(&path);
  EXPECT_EQ("/", path);

  path = ".";
  CanonicalizePath(&path);
  EXPECT_EQ(".", path);

  path = "./.";
  CanonicalizePath(&path);
  EXPECT_EQ(".", path);

  path = "foo/..";
  CanonicalizePath(&path);
  EXPECT_EQ(".", path);

  path = "foo/.._bar";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/.._bar", path);
}

#ifdef _WIN32
TEST(CanonicalizePath, PathSamplesWindows) {
  string path;

  CanonicalizePath(&path);
  EXPECT_EQ("", path);

  path = "foo.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo.h", path);

  path = ".\\foo.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo.h", path);

  path = ".\\foo\\.\\bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/bar.h", path);

  path = ".\\x\\foo\\..\\bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("x/bar.h", path);

  path = ".\\x\\foo\\..\\..\\bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("bar.h", path);

  path = "foo\\\\bar";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/bar", path);

  path = "foo\\\\.\\\\..\\\\\\bar";
  CanonicalizePath(&path);
  EXPECT_EQ("bar", path);

  path = ".\\x\\..\\foo\\..\\..\\bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("../bar.h", path);

  path = "foo\\.\\.";
  CanonicalizePath(&path);
  EXPECT_EQ("foo", path);

  path = "foo\\bar\\..";
  CanonicalizePath(&path);
  EXPECT_EQ("foo", path);

  path = "foo\\.hidden_bar";
  CanonicalizePath(&path);
  EXPECT_EQ("foo/.hidden_bar", path);

  path = "\\foo";
  CanonicalizePath(&path);
  EXPECT_EQ("/foo", path);

  path = "\\\\foo";
  CanonicalizePath(&path);
  EXPECT_EQ("//foo", path);

  path = "\\";
  CanonicalizePath(&path);
  EXPECT_EQ("/", path);
}

TEST(CanonicalizePath, SlashTracking) {
  string path;
  uint64_t slash_bits;

  path = "foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("foo.h", path);
  EXPECT_EQ(0, slash_bits);

  path = "a\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a/bcd/efh\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/bcd/efh/foo.h", path);
  EXPECT_EQ(4, slash_bits);

  path = "a\\bcd/efh\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/bcd/efh/foo.h", path);
  EXPECT_EQ(5, slash_bits);

  path = "a\\bcd\\efh\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/bcd/efh/foo.h", path);
  EXPECT_EQ(7, slash_bits);

  path = "a/bcd/efh/foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/bcd/efh/foo.h", path);
  EXPECT_EQ(0, slash_bits);

  path = "a\\./efh\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/efh/foo.h", path);
  EXPECT_EQ(3, slash_bits);

  path = "a\\../efh\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("efh/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a\\b\\c\\d\\e\\f\\g\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/b/c/d/e/f/g/foo.h", path);
  EXPECT_EQ(127, slash_bits);

  path = "a\\b\\c\\..\\..\\..\\g\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("g/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a\\b/c\\../../..\\g\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("g/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a\\b/c\\./../..\\g\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/g/foo.h", path);
  EXPECT_EQ(3, slash_bits);

  path = "a\\b/c\\./../..\\g/foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/g/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a\\\\\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/foo.h", path);
  EXPECT_EQ(1, slash_bits);

  path = "a/\\\\foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/foo.h", path);
  EXPECT_EQ(0, slash_bits);

  path = "a\\//foo.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ("a/foo.h", path);
  EXPECT_EQ(1, slash_bits);
}

TEST(CanonicalizePath, CanonicalizeNotExceedingLen) {
  // Make sure searching \/ doesn't go past supplied len.
  char buf[] = "foo/bar\\baz.h\\";  // Last \ past end.
  uint64_t slash_bits;
  size_t size = 13;
  ::CanonicalizePath(buf, &size, &slash_bits);
  EXPECT_EQ(0, strncmp("foo/bar/baz.h", buf, size));
  EXPECT_EQ(2, slash_bits);  // Not including the trailing one.
}

TEST(CanonicalizePath, TooManyComponents) {
  string path;
  uint64_t slash_bits;

  // 64 is OK.
  path = "a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./"
         "a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./x.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x0);

  // Backslashes version.
  path =
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\x.h";

  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0xffffffff);

  // 65 is OK if #component is less than 60 after path canonicalization.
  path = "a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./"
         "a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./a/./x/y.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x0);

  // Backslashes version.
  path =
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\"
      "a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\a\\.\\x\\y.h";
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x1ffffffff);


  // 59 after canonicalization is OK.
  path = "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
         "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/x/y.h";
  EXPECT_EQ(58, std::count(path.begin(), path.end(), '/'));
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x0);

  // Backslashes version.
  path =
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\x\\y.h";
  EXPECT_EQ(58, std::count(path.begin(), path.end(), '\\'));
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x3ffffffffffffff);

  // More than 60 components is now completely ok too.
  path =
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\a\\"
      "a\\a\\a\\a\\a\\a\\a\\a\\a\\x\\y.h";
  EXPECT_EQ(218, std::count(path.begin(), path.end(), '\\'));
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0xffffffffffffffff);
}
#else   // !_WIN32
TEST(CanonicalizePath, TooManyComponents) {
  string path;
  uint64_t slash_bits;

  // More than 60 components is now completely ok.
  path =
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/"
      "a/a/a/a/a/a/a/a/a/x/y.h";
  EXPECT_EQ(218, std::count(path.begin(), path.end(), '/'));
  CanonicalizePath(&path, &slash_bits);
  EXPECT_EQ(slash_bits, 0x0);
}
#endif  // !_WIN32

TEST(CanonicalizePath, UpDir) {
  string path, err;
  path = "../../foo/bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("../../foo/bar.h", path);

  path = "test/../../foo/bar.h";
  CanonicalizePath(&path);
  EXPECT_EQ("../foo/bar.h", path);
}

TEST(CanonicalizePath, AbsolutePath) {
  string path = "/usr/include/stdio.h";
  string err;
  CanonicalizePath(&path);
  EXPECT_EQ("/usr/include/stdio.h", path);
}

TEST(CanonicalizePath, NotNullTerminated) {
  string path;
  size_t len;
  uint64_t unused;

  path = "foo/. bar/.";
  len = strlen("foo/.");  // Canonicalize only the part before the space.
  CanonicalizePath(&path[0], &len, &unused);
  EXPECT_EQ(strlen("foo"), len);
  EXPECT_EQ("foo/. bar/.", string(path));

  // Verify that foo/..file gets canonicalized to 'file' without
  // touching the rest of the string.
  path = "foo/../file bar/.";
  len = strlen("foo/../file");
  CanonicalizePath(&path[0], &len, &unused);
  EXPECT_EQ(strlen("file"), len);
  EXPECT_EQ("file../file bar/.", string(path));
}

TEST(PathEscaping, TortureTest) {
  string result;

  GetWin32EscapedString("foo bar\\\"'$@d!st!c'\\path'\\", &result);
  EXPECT_EQ("\"foo bar\\\\\\\"'$@d!st!c'\\path'\\\\\"", result);
  result.clear();

  GetShellEscapedString("foo bar\"/'$@d!st!c'/path'", &result);
  EXPECT_EQ("'foo bar\"/'\\''$@d!st!c'\\''/path'\\'''", result);
}

TEST(PathEscaping, SensiblePathsAreNotNeedlesslyEscaped) {
  const char* path = "some/sensible/path/without/crazy/characters.c++";
  string result;

  GetWin32EscapedString(path, &result);
  EXPECT_EQ(path, result);
  result.clear();

  GetShellEscapedString(path, &result);
  EXPECT_EQ(path, result);
}

TEST(PathEscaping, SensibleWin32PathsAreNotNeedlesslyEscaped) {
  const char* path = "some\\sensible\\path\\without\\crazy\\characters.c++";
  string result;

  GetWin32EscapedString(path, &result);
  EXPECT_EQ(path, result);
}

TEST(StripAnsiEscapeCodes, EscapeAtEnd) {
  string stripped = StripAnsiEscapeCodes("foo\33");
  EXPECT_EQ("foo", stripped);

  stripped = StripAnsiEscapeCodes("foo\33[");
  EXPECT_EQ("foo", stripped);
}

TEST(StripAnsiEscapeCodes, StripColors) {
  // An actual clang warning.
  string input = "\33[1maffixmgr.cxx:286:15: \33[0m\33[0;1;35mwarning: "
                 "\33[0m\33[1musing the result... [-Wparentheses]\33[0m";
  string stripped = StripAnsiEscapeCodes(input);
  EXPECT_EQ("affixmgr.cxx:286:15: warning: using the result... [-Wparentheses]",
            stripped);
}

TEST(ElideMiddle, NothingToElide) {
  string input = "Nothing to elide in this short string.";
  EXPECT_EQ(input, ElideMiddle(input, 80));
  EXPECT_EQ(input, ElideMiddle(input, 38));
  EXPECT_EQ("", ElideMiddle(input, 0));
  EXPECT_EQ(".", ElideMiddle(input, 1));
  EXPECT_EQ("..", ElideMiddle(input, 2));
  EXPECT_EQ("...", ElideMiddle(input, 3));
}

TEST(ElideMiddle, ElideInTheMiddle) {
  string input = "01234567890123456789";
  EXPECT_EQ("...9", ElideMiddle(input, 4));
  EXPECT_EQ("0...9", ElideMiddle(input, 5));
  EXPECT_EQ("012...789", ElideMiddle(input, 9));
  EXPECT_EQ("012...6789", ElideMiddle(input, 10));
  EXPECT_EQ("0123...6789", ElideMiddle(input, 11));
  EXPECT_EQ("01234567...23456789", ElideMiddle(input, 19));
  EXPECT_EQ("01234567890123456789", ElideMiddle(input, 20));
}

TEST(ElideMiddle, ElideAnsiEscapeCodes) {
  std::string input = "012345\x1B[0;35m67890123456789";
  EXPECT_EQ("012...\x1B[0;35m6789", ElideMiddle(input, 10));
  EXPECT_EQ("012345\x1B[0;35m67...23456789", ElideMiddle(input, 19));

  EXPECT_EQ("Nothing \33[m string.", ElideMiddle("Nothing \33[m string.", 18));
  EXPECT_EQ("0\33[m12...6789", ElideMiddle("0\33[m1234567890123456789", 10));

  input = "abcd\x1b[1;31mefg\x1b[0mhlkmnopqrstuvwxyz";
  EXPECT_EQ("", ElideMiddle(input, 0));
  EXPECT_EQ(".", ElideMiddle(input, 1));
  EXPECT_EQ("..", ElideMiddle(input, 2));
  EXPECT_EQ("...", ElideMiddle(input, 3));
  EXPECT_EQ("...\x1B[1;31m\x1B[0mz", ElideMiddle(input, 4));
  EXPECT_EQ("a...\x1B[1;31m\x1B[0mz", ElideMiddle(input, 5));
  EXPECT_EQ("a...\x1B[1;31m\x1B[0myz", ElideMiddle(input, 6));
  EXPECT_EQ("ab...\x1B[1;31m\x1B[0myz", ElideMiddle(input, 7));
  EXPECT_EQ("ab...\x1B[1;31m\x1B[0mxyz", ElideMiddle(input, 8));
  EXPECT_EQ("abc...\x1B[1;31m\x1B[0mxyz", ElideMiddle(input, 9));
  EXPECT_EQ("abc...\x1B[1;31m\x1B[0mwxyz", ElideMiddle(input, 10));
  EXPECT_EQ("abcd\x1B[1;31m...\x1B[0mwxyz", ElideMiddle(input, 11));
  EXPECT_EQ("abcd\x1B[1;31m...\x1B[0mvwxyz", ElideMiddle(input, 12));

  EXPECT_EQ("abcd\x1B[1;31mef...\x1B[0muvwxyz", ElideMiddle(input, 15));
  EXPECT_EQ("abcd\x1B[1;31mef...\x1B[0mtuvwxyz", ElideMiddle(input, 16));
  EXPECT_EQ("abcd\x1B[1;31mefg\x1B[0m...tuvwxyz", ElideMiddle(input, 17));
  EXPECT_EQ("abcd\x1B[1;31mefg\x1B[0m...stuvwxyz", ElideMiddle(input, 18));
  EXPECT_EQ("abcd\x1B[1;31mefg\x1B[0mh...stuvwxyz", ElideMiddle(input, 19));

  input = "abcdef\x1b[31mA\x1b[0mBC";
  EXPECT_EQ("...\x1B[31m\x1B[0mC", ElideMiddle(input, 4));
  EXPECT_EQ("a...\x1B[31m\x1B[0mC", ElideMiddle(input, 5));
  EXPECT_EQ("a...\x1B[31m\x1B[0mBC", ElideMiddle(input, 6));
  EXPECT_EQ("ab...\x1B[31m\x1B[0mBC", ElideMiddle(input, 7));
  EXPECT_EQ("ab...\x1B[31mA\x1B[0mBC", ElideMiddle(input, 8));
  EXPECT_EQ("abcdef\x1b[31mA\x1b[0mBC", ElideMiddle(input, 9));
}

TEST(IsAbsolutePath, WithAbsolutePaths) {
  EXPECT_TRUE(IsAbsolutePath("/"));
  EXPECT_TRUE(IsAbsolutePath("/src"));
#ifdef _WIN32
  EXPECT_TRUE(IsAbsolutePath("\\"));
  EXPECT_TRUE(IsAbsolutePath("\\src"));
  EXPECT_TRUE(IsAbsolutePath("//server/name"));
  EXPECT_TRUE(IsAbsolutePath("\\\\server\\name"));
  EXPECT_TRUE(IsAbsolutePath("\\\\.\\device\\path"));
  EXPECT_TRUE(IsAbsolutePath("c:/"));
  EXPECT_TRUE(IsAbsolutePath("c:/foo"));
#endif  // !WIN32
}

TEST(IsAbsolutePath, WithRelativePaths) {
  EXPECT_FALSE(IsAbsolutePath("."));
  EXPECT_FALSE(IsAbsolutePath(".."));
  EXPECT_FALSE(IsAbsolutePath("./"));
  EXPECT_FALSE(IsAbsolutePath("../"));
  EXPECT_FALSE(IsAbsolutePath("src"));
  EXPECT_FALSE(IsAbsolutePath("src/"));
#ifdef _WIN32
  EXPECT_FALSE(IsAbsolutePath(".\\"));
  EXPECT_FALSE(IsAbsolutePath("..\\"));
  EXPECT_FALSE(IsAbsolutePath("src\\"));
  EXPECT_FALSE(IsAbsolutePath("c:"));
  EXPECT_FALSE(IsAbsolutePath("c:foo"));
#else   // !_WIN32
  EXPECT_FALSE(IsAbsolutePath("\\"));
  EXPECT_FALSE(IsAbsolutePath("\\foo"));
#endif  // !_WIN32
}

TEST(GetCurrentDir, PathIsAbsolute) {
  std::string cur_dir = GetCurrentDir();
  fprintf(stderr, "GetCurrentDir: %s\n", cur_dir.c_str());
  EXPECT_TRUE(IsAbsolutePath(cur_dir))
      << "GetCurrentDir() is not absolute: " << cur_dir;
}

TEST(GetCurrentExecutable, IsAbsolute) {
  std::string cur_executable = GetCurrentExecutable();
  EXPECT_TRUE(IsAbsolutePath(cur_executable))
      << "GetCurrentExecutable() is not absolute: " << cur_executable;
}

TEST(GetCurrentExecutableDir, IsAbsolute) {
  std::string cur_executable_dir = GetCurrentExecutableDir();
  EXPECT_TRUE(IsAbsolutePath(cur_executable_dir))
      << "GetCurrentExecutableDir() is not absolute: " << cur_executable_dir;
}

TEST(GetCurrentDir, AfterDirectoryChange) {
  std::string original_dir = GetCurrentDir();
  {
    ScopedTempDir temp_dir;
    temp_dir.CreateAndEnter("current_test_dir");
    std::string new_dir = GetCurrentDir();
    EXPECT_NE(original_dir, new_dir);
  }
  EXPECT_EQ(original_dir, GetCurrentDir());
}

TEST(StringFormat, StringFormatWithVarargs) {
  std::string str = StringFormat("%s %d %s", "foo", 42, "bar");
  EXPECT_EQ("foo 42 bar", str);
}

TEST(StringFormat, StringFormatWithValist) {
  auto f = [](const char* fmt, ...) {
    va_list args;
    va_start(args, fmt);
    std::string result = StringFormat(fmt, args);
    va_end(args);
    return result;
  };

  std::string str = f("%s %d %s", "foo", 42, "bar");
  EXPECT_EQ("foo 42 bar", str);
}

TEST(StringFormat, StringAppendFormatWithVarargs) {
  std::string str("foo");
  StringAppendFormat(str, " %d %s", 42, "bar");
  EXPECT_EQ("foo 42 bar", str);
}

TEST(StringFormat, StringAppendFormatWithVarargsAndLongResult) {
  std::string str("foo");
  std::string bar("xxxxxxxx");
  bar += bar;
  bar += bar;
  bar += bar;
  bar += bar;
  bar += bar;
  StringAppendFormat(str, " %d %s --", 42, bar.c_str());

  std::string expected = std::string("foo 42 ") + bar + " --";
  EXPECT_EQ(expected, str);
}

TEST(StringFormat, StringAppendFormatWithValist) {
  std::string str;
  auto f = [&str](const char* fmt, ...) {
    va_list args;
    va_start(args, fmt);
    StringAppendFormat(str, fmt, args);
    va_end(args);
  };

  f("%s %d %s", "foo", 42, "bar");
  EXPECT_EQ("foo 42 bar", str);
}

#ifdef _WIN32
TEST(ConvertToUnicodeString, Test) {
  EXPECT_EQ(std::wstring(L"B\u00E9b\u00E9"),
            ConvertToUnicodeString("B\xC3\xA9"
                                   "b\xC3\xA9"));
}

TEST(ConvertFromUnicodeString, Test) {
  EXPECT_EQ(std::string("B\xC3\xA9"
                        "b\xC3\xA9"),
            ConvertFromUnicodeString(L"B\u00E9b\u00E9"));
}
#endif  // _WIN32