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// 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 "test.h"

TEST(CanonicalizePath, PathSamples) {
  string path;
  string err;

  EXPECT_FALSE(CanonicalizePath(&path, &err));
  EXPECT_EQ("empty path", err);

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

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

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

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

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

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

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

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

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

TEST(CanonicalizePath, EmptyResult) {
  string path;
  string err;

  EXPECT_FALSE(CanonicalizePath(&path, &err));
  EXPECT_EQ("empty path", err);

  path = ".";
  EXPECT_FALSE(CanonicalizePath(&path, &err));
  EXPECT_EQ("path canonicalizes to the empty path", err);

  path = "./.";
  EXPECT_FALSE(CanonicalizePath(&path, &err));
  EXPECT_EQ("path canonicalizes to the empty path", err);
}

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

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

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

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);
}