// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "testing/gtest/include/gtest/gtest.h"
#include "tools/gn/err.h"
#include "tools/gn/label.h"
#include "tools/gn/value.h"

namespace {

struct ParseDepStringCase {
  const char* cur_dir;
  const char* str;
  bool success;
  const char* expected_dir;
  const char* expected_name;
  const char* expected_toolchain_dir;
  const char* expected_toolchain_name;
};

}  // namespace

TEST(Label, Resolve) {
  ParseDepStringCase cases[] = {
      // cur         input                        succ   expected dir          name    tc dir    tc name
      { "//chrome/", "",                          false, "",                   "",     "",       "" },
      { "//chrome/", "/",                         false, "",                   "",     "",       "" },
      { "//chrome/", ":",                         false, "",                   "",     "",       "" },
      { "//chrome/", "/:",                        false, "",                   "",     "",       "" },
      { "//chrome/", "blah",                      true,  "//chrome/blah/",     "blah", "//t/",   "d" },
      { "//chrome/", "blah:bar",                  true,  "//chrome/blah/",     "bar",  "//t/",   "d" },
      // No single-leading slash.
      { "//chrome/", "/chrome:bar",               false, "",                   "",     "",       "" },
      // No trailing slash.
      { "//chrome/", "/chrome/:bar",              false, "",                   "",     "",       "" },
      // Refers to root dir.
      { "//chrome/", "//:bar",                    true,  "//",                 "bar",  "//t/",   "d" },
      // Implicit directory
      { "//chrome/", ":bar",                      true,  "//chrome/",          "bar",  "//t/",   "d" },
      { "//chrome/renderer/", ":bar",             true,  "//chrome/renderer/", "bar",  "//t/",   "d" },
      // Implicit names.
      { "//chrome/", "//base",                    true,  "//base/",            "base", "//t/",   "d" },
      { "//chrome/", "//base/i18n",               true,  "//base/i18n/",       "i18n", "//t/",   "d" },
      { "//chrome/", "//base/i18n:foo",           true,  "//base/i18n/",       "foo",  "//t/",   "d" },
      // Toolchain parsing.
      { "//chrome/", "//chrome:bar(//t:n)",       true,  "//chrome/",          "bar",  "//t/",   "n" },
      { "//chrome/", "//chrome:bar(//t)",         true,  "//chrome/",          "bar",  "//t/",   "t" },
      { "//chrome/", "//chrome:bar(//t:)",        true,  "//chrome/",          "bar",  "//t/",   "t" },
      { "//chrome/", "//chrome:bar()",            true,  "//chrome/",          "bar",  "//t/",   "d" },
      { "//chrome/", "//chrome:bar(foo)",         true,  "//chrome/",          "bar",  "//chrome/foo/", "foo" },
      { "//chrome/", "//chrome:bar(:foo)",        true,  "//chrome/",          "bar",  "//chrome/",     "foo" },
      // TODO(brettw) it might be nice to make this an error:
      //{ "//chrome/", "//chrome:bar())",           false, "",                   "",     "",       "" },
      { "//chrome/", "//chrome:bar(//t:bar(tc))", false, "",                   "",     "",       "" },
      { "//chrome/", "//chrome:bar(()",           false, "",                   "",     "",       "" },
      { "//chrome/", "(t:b)",                     false, "",                   "",     "",       "" },
      { "//chrome/", ":bar(//t/b)",               true,  "//chrome/",          "bar",  "//t/b/", "b" },
      { "//chrome/", ":bar(/t/b)",                false, "",                   "",     "",       "" },
      { "//chrome/", ":bar(t/b)",                 true,  "//chrome/",          "bar",  "//chrome/t/b/", "b" },
  };

  Label default_toolchain(SourceDir("//t/"), "d",
                          SourceDir(), std::string());

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    const ParseDepStringCase& cur = cases[i];

    std::string location, name;
    Err err;
    Value v(NULL, Value::STRING);
    v.string_value() = cur.str;
    Label result =
        Label::Resolve(SourceDir(cur.cur_dir), default_toolchain, v, &err);
    EXPECT_EQ(cur.success, !err.has_error()) << i << " " << cur.str;
    if (!err.has_error() && cur.success) {
      EXPECT_EQ(cur.expected_dir, result.dir().value())
          << i << " " << cur.str;
      EXPECT_EQ(cur.expected_name, result.name())
          << i << " " << cur.str;
      EXPECT_EQ(cur.expected_toolchain_dir,
                result.toolchain_dir().value())
          << i << " " << cur.str;
      EXPECT_EQ(cur.expected_toolchain_name, result.toolchain_name())
          << i << " " << cur.str;
    }
  }
}