content: // Copyright 2018 Google Inc. Use of this source code is governed by an
  // MIT-style license that can be found in the LICENSE file or at
  // https://opensource.org/licenses/MIT.
  
  @TestOn('vm')
  library;
  
  import 'package:test/test.dart';
  
  import 'package:sass/sass.dart';
  
  import 'utils.dart';
  
  void main() {
    group("an unquoted ASCII string", () {
      late SassString value;
      setUp(() => value = parseValue("foobar") as SassString);
  
      test("has the correct text", () {
        expect(value.text, equals("foobar"));
      });
  
      test("has no quotes", () {
        expect(value.hasQuotes, isFalse);
      });
  
      test("equals the same string", () {
        expect(value, equalsWithHash(SassString("foobar", quotes: false)));
        expect(value, equalsWithHash(SassString("foobar", quotes: true)));
      });
  
      test("is a string", () {
        expect(value.assertString(), equals(value));
      });
  
      test("isn't any other type", () {
        expect(value.assertBoolean, throwsSassScriptException);
        expect(value.assertCalculation, throwsSassScriptException);
        expect(value.assertColor, throwsSassScriptException);
        expect(value.assertFunction, throwsSassScriptException);
        expect(value.assertMap, throwsSassScriptException);
        expect(value.tryMap(), isNull);
        expect(value.assertNumber, throwsSassScriptException);
      });
  
      test("sassLength returns the length", () {
        expect(value.sassLength, equals(6));
      });
  
      group("sassIndexToStringIndex()", () {
        test("converts a positive index to a Dart index", () {
          expect(value.sassIndexToStringIndex(SassNumber(1)), equals(0));
          expect(value.sassIndexToStringIndex(SassNumber(2)), equals(1));
          expect(value.sassIndexToStringIndex(SassNumber(3)), equals(2));
          expect(value.sassIndexToStringIndex(SassNumber(4)), equals(3));
          expect(value.sassIndexToStringIndex(SassNumber(5)), equals(4));
          expect(value.sassIndexToStringIndex(SassNumber(6)), equals(5));
        });
  
        test("converts a negative index to a Dart index", () {
          expect(value.sassIndexToStringIndex(SassNumber(-1)), equals(5));
          expect(value.sassIndexToStringIndex(SassNumber(-2)), equals(4));
          expect(value.sassIndexToStringIndex(SassNumber(-3)), equals(3));
          expect(value.sassIndexToStringIndex(SassNumber(-4)), equals(2));
          expect(value.sassIndexToStringIndex(SassNumber(-5)), equals(1));
          expect(value.sassIndexToStringIndex(SassNumber(-6)), equals(0));
        });
  
        test("rejects a non-number", () {
          expect(
            () => value.sassIndexToStringIndex(SassString("foo")),
            throwsSassScriptException,
          );
        });
  
        test("rejects a non-integer", () {
          expect(
            () => value.sassIndexToStringIndex(SassNumber(1.1)),
            throwsSassScriptException,
          );
        });
  
        test("rejects invalid indices", () {
          expect(
            () => value.sassIndexToStringIndex(SassNumber(0)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToStringIndex(SassNumber(7)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToStringIndex(SassNumber(-7)),
            throwsSassScriptException,
          );
        });
      });
  
      group("sassIndexToRuneIndex()", () {
        test("converts a positive index to a Dart index", () {
          expect(value.sassIndexToRuneIndex(SassNumber(1)), equals(0));
          expect(value.sassIndexToRuneIndex(SassNumber(2)), equals(1));
          expect(value.sassIndexToRuneIndex(SassNumber(3)), equals(2));
          expect(value.sassIndexToRuneIndex(SassNumber(4)), equals(3));
          expect(value.sassIndexToRuneIndex(SassNumber(5)), equals(4));
          expect(value.sassIndexToRuneIndex(SassNumber(6)), equals(5));
        });
  
        test("converts a negative index to a Dart index", () {
          expect(value.sassIndexToRuneIndex(SassNumber(-1)), equals(5));
          expect(value.sassIndexToRuneIndex(SassNumber(-2)), equals(4));
          expect(value.sassIndexToRuneIndex(SassNumber(-3)), equals(3));
          expect(value.sassIndexToRuneIndex(SassNumber(-4)), equals(2));
          expect(value.sassIndexToRuneIndex(SassNumber(-5)), equals(1));
          expect(value.sassIndexToRuneIndex(SassNumber(-6)), equals(0));
        });
  
        test("rejects a non-number", () {
          expect(
            () => value.sassIndexToRuneIndex(SassString("foo")),
            throwsSassScriptException,
          );
        });
  
        test("rejects a non-integer", () {
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(1.1)),
            throwsSassScriptException,
          );
        });
  
        test("rejects invalid indices", () {
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(0)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(7)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(-7)),
            throwsSassScriptException,
          );
        });
      });
    });
  
    group("a quoted ASCII string", () {
      late SassString value;
      setUp(() => value = parseValue('"foobar"') as SassString);
  
      test("has the correct text", () {
        expect(value.text, equals("foobar"));
      });
  
      test("has quotes", () {
        expect(value.hasQuotes, isTrue);
      });
  
      test("equals the same string", () {
        expect(value, equalsWithHash(SassString("foobar", quotes: false)));
        expect(value, equalsWithHash(SassString("foobar", quotes: true)));
      });
    });
  
    group("an unquoted Unicode", () {
      late SassString value;
      setUp(() => value = parseValue("a👭b👬c") as SassString);
  
      test("sassLength returns the length", () {
        expect(value.sassLength, equals(5));
      });
  
      group("sassIndexToStringIndex()", () {
        test("converts a positive index to a Dart index", () {
          expect(value.sassIndexToStringIndex(SassNumber(1)), equals(0));
          expect(value.sassIndexToStringIndex(SassNumber(2)), equals(1));
          expect(value.sassIndexToStringIndex(SassNumber(3)), equals(3));
          expect(value.sassIndexToStringIndex(SassNumber(4)), equals(4));
          expect(value.sassIndexToStringIndex(SassNumber(5)), equals(6));
        });
  
        test("converts a negative index to a Dart index", () {
          expect(value.sassIndexToStringIndex(SassNumber(-1)), equals(6));
          expect(value.sassIndexToStringIndex(SassNumber(-2)), equals(4));
          expect(value.sassIndexToStringIndex(SassNumber(-3)), equals(3));
          expect(value.sassIndexToStringIndex(SassNumber(-4)), equals(1));
          expect(value.sassIndexToStringIndex(SassNumber(-5)), equals(0));
        });
  
        test("rejects invalid indices", () {
          expect(
            () => value.sassIndexToStringIndex(SassNumber(0)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToStringIndex(SassNumber(6)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToStringIndex(SassNumber(-6)),
            throwsSassScriptException,
          );
        });
      });
  
      group("sassIndexToRuneIndex()", () {
        test("converts a positive index to a Dart index", () {
          expect(value.sassIndexToRuneIndex(SassNumber(1)), equals(0));
          expect(value.sassIndexToRuneIndex(SassNumber(2)), equals(1));
          expect(value.sassIndexToRuneIndex(SassNumber(3)), equals(2));
          expect(value.sassIndexToRuneIndex(SassNumber(4)), equals(3));
          expect(value.sassIndexToRuneIndex(SassNumber(5)), equals(4));
        });
  
        test("converts a negative index to a Dart index", () {
          expect(value.sassIndexToRuneIndex(SassNumber(-1)), equals(4));
          expect(value.sassIndexToRuneIndex(SassNumber(-2)), equals(3));
          expect(value.sassIndexToRuneIndex(SassNumber(-3)), equals(2));
          expect(value.sassIndexToRuneIndex(SassNumber(-4)), equals(1));
          expect(value.sassIndexToRuneIndex(SassNumber(-5)), equals(0));
        });
  
        test("rejects invalid indices", () {
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(0)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(6)),
            throwsSassScriptException,
          );
          expect(
            () => value.sassIndexToRuneIndex(SassNumber(-6)),
            throwsSassScriptException,
          );
        });
      });
    });
  
    group("new SassString.empty()", () {
      test("creates an empty unquoted string", () {
        var string = SassString.empty(quotes: false);
        expect(string.text, isEmpty);
        expect(string.hasQuotes, isFalse);
      });
  
      test("creates an empty quoted string", () {
        var string = SassString.empty(quotes: true);
        expect(string.text, isEmpty);
        expect(string.hasQuotes, isTrue);
      });
    });
  
    group("new SassString()", () {
      test("creates an unquoted string with the given text", () {
        var string = SassString("a b c", quotes: false);
        expect(string.text, equals("a b c"));
        expect(string.hasQuotes, isFalse);
      });
  
      test("creates a quoted string with the given text", () {
        var string = SassString("a b c", quotes: true);
        expect(string.text, equals("a b c"));
        expect(string.hasQuotes, isTrue);
      });
    });
  }
  