// Copyright (c) 2020, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import "package:package_config/package_config_types.dart";
import "package:test/test.dart";
import "src/util.dart";

void main() {
  var unique = Object();
  var root = Uri.file("/tmp/root/");

  group("LanguageVersion", () {
    test("minimal", () {
      var version = LanguageVersion(3, 5);
      expect(version.major, 3);
      expect(version.minor, 5);
    });

    test("negative major", () {
      expect(() => LanguageVersion(-1, 1), throwsArgumentError);
    });

    test("negative minor", () {
      expect(() => LanguageVersion(1, -1), throwsArgumentError);
    });

    test("minimal parse", () {
      var version = LanguageVersion.parse("3.5");
      expect(version.major, 3);
      expect(version.minor, 5);
    });

    void failParse(String name, String input) {
      test("$name - error", () {
        expect(() => LanguageVersion.parse(input),
            throwsA(TypeMatcher<PackageConfigError>()));
        expect(() => LanguageVersion.parse(input), throwsFormatException);
        var failed = false;
        var actual = LanguageVersion.parse(input, onError: (_) {
          failed = true;
        });
        expect(failed, true);
        expect(actual, isA<LanguageVersion>());
      });
    }

    failParse("Leading zero major", "01.1");
    failParse("Leading zero minor", "1.01");
    failParse("Sign+ major", "+1.1");
    failParse("Sign- major", "-1.1");
    failParse("Sign+ minor", "1.+1");
    failParse("Sign- minor", "1.-1");
    failParse("WhiteSpace 1", " 1.1");
    failParse("WhiteSpace 2", "1 .1");
    failParse("WhiteSpace 3", "1. 1");
    failParse("WhiteSpace 4", "1.1 ");
  });

  group("Package", () {
    test("minimal", () {
      var package = Package("name", root, extraData: unique);
      expect(package.name, "name");
      expect(package.root, root);
      expect(package.packageUriRoot, root);
      expect(package.languageVersion, null);
      expect(package.extraData, same(unique));
    });

    test("absolute package root", () {
      var version = LanguageVersion(1, 1);
      var absolute = root.resolve("foo/bar/");
      var package = Package("name", root,
          packageUriRoot: absolute,
          languageVersion: version,
          extraData: unique);
      expect(package.name, "name");
      expect(package.root, root);
      expect(package.packageUriRoot, absolute);
      expect(package.languageVersion, version);
      expect(package.extraData, same(unique));
    });

    test("relative package root", () {
      var relative = Uri.parse("foo/bar/");
      var absolute = root.resolveUri(relative);
      var package =
          Package("name", root, packageUriRoot: relative, extraData: unique);
      expect(package.name, "name");
      expect(package.root, root);
      expect(package.packageUriRoot, absolute);
      expect(package.languageVersion, null);
      expect(package.extraData, same(unique));
    });

    for (var badName in ["a/z", "a:z", "", "..."]) {
      test("Invalid name '$badName'", () {
        expect(() => Package(badName, root), throwsPackageConfigError);
      });
    }

    test("Invalid root, not absolute", () {
      expect(
          () => Package("name", Uri.parse("/foo/")), throwsPackageConfigError);
    });

    test("Invalid root, not ending in slash", () {
      expect(() => Package("name", Uri.parse("file:///foo")),
          throwsPackageConfigError);
    });

    test("invalid package root, not ending in slash", () {
      expect(() => Package("name", root, packageUriRoot: Uri.parse("foo")),
          throwsPackageConfigError);
    });

    test("invalid package root, not inside root", () {
      expect(() => Package("name", root, packageUriRoot: Uri.parse("../baz/")),
          throwsPackageConfigError);
    });
  });

  group("package config", () {
    test("emtpy", () {
      var empty = PackageConfig([], extraData: unique);
      expect(empty.version, 2);
      expect(empty.packages, isEmpty);
      expect(empty.extraData, same(unique));
      expect(empty.resolve(pkg("a", "b")), isNull);
    });

    test("single", () {
      var package = Package("name", root);
      var single = PackageConfig([package], extraData: unique);
      expect(single.version, 2);
      expect(single.packages, hasLength(1));
      expect(single.extraData, same(unique));
      expect(single.resolve(pkg("a", "b")), isNull);
      var resolved = single.resolve(pkg("name", "a/b"));
      expect(resolved, root.resolve("a/b"));
    });
  });
}

final Matcher throwsPackageConfigError = throwsA(isA<PackageConfigError>());