public static void TestRangeToString() { int?value1 = 1; int?empty = null; var key = "Hello!"; AreEqual(Range <int> .Empty.ToString(CultureInfo.InvariantCulture), "∅"); AreEqual(Range <int> .Infinite.ToString(CultureInfo.InvariantCulture), "(-∞..+∞)"); AreEqual(Range.Create(1, 1).ToString(CultureInfo.InvariantCulture), "[1..1]"); AreEqual(Range.TryCreate(1, 1).ToString(CultureInfo.InvariantCulture), "[1..1]"); AreEqual(Range.Create(1, 2).ToString(CultureInfo.InvariantCulture), "[1..2]"); AreEqual(Range.TryCreate(1, 2).ToString(CultureInfo.InvariantCulture), "[1..2]"); AreEqual(Range.CreateExclusive(1, 2).ToString(CultureInfo.InvariantCulture), "(1..2)"); AreEqual(Range.TryCreateExclusive(1, 2).ToString(CultureInfo.InvariantCulture), "(1..2)"); AreEqual(Range.CreateExclusiveFrom(1, 2).ToString(CultureInfo.InvariantCulture), "(1..2]"); AreEqual(Range.TryCreateExclusiveFrom(1, 2).ToString(CultureInfo.InvariantCulture), "(1..2]"); AreEqual(Range.CreateExclusiveTo(1, 2).ToString(CultureInfo.InvariantCulture), "[1..2)"); AreEqual(Range.TryCreateExclusiveTo(1, 2).ToString(CultureInfo.InvariantCulture), "[1..2)"); AreEqual(Range.CreateExclusive(value1, empty).ToString("000", CultureInfo.InvariantCulture), "(001..+∞)"); AreEqual(Range.TryCreateExclusive(value1, empty).ToString("000", CultureInfo.InvariantCulture), "(001..+∞)"); AreEqual(Range.Create(RangeBoundaryFrom <int?> .Empty, RangeBoundaryTo <int?> .Empty, key).ToString(CultureInfo.InvariantCulture), "'Hello!':∅"); AreEqual(Range.TryCreate(RangeBoundaryFrom <int?> .Empty, RangeBoundaryTo <int?> .Empty, key).ToString(CultureInfo.InvariantCulture), "'Hello!':∅"); AreEqual(Range.Create(empty, empty, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(-∞..+∞)"); AreEqual(Range.TryCreate(empty, empty, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(-∞..+∞)"); AreEqual(Range.Create(empty, empty, (string?)null).ToString(CultureInfo.InvariantCulture), "'':(-∞..+∞)"); AreEqual(Range.TryCreate(empty, empty, (string?)null).ToString(CultureInfo.InvariantCulture), "'':(-∞..+∞)"); AreEqual(Range.Create(1, 1, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..1]"); AreEqual(Range.TryCreate(1, 1, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..1]"); AreEqual(Range.Create(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..2]"); AreEqual(Range.TryCreate(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..2]"); AreEqual(Range.CreateExclusive(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(1..2)"); AreEqual(Range.TryCreateExclusive(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(1..2)"); AreEqual(Range.CreateExclusiveFrom(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(1..2]"); AreEqual(Range.TryCreateExclusiveFrom(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':(1..2]"); AreEqual(Range.CreateExclusiveTo(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..2)"); AreEqual(Range.TryCreateExclusiveTo(1, 2, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..2)"); AreEqual(Range.CreateExclusive(value1, empty, 3).ToString("000", CultureInfo.InvariantCulture), "'3':(001..+∞)"); AreEqual(Range.TryCreateExclusive(value1, empty, 3).ToString("000", CultureInfo.InvariantCulture), "'3':(001..+∞)"); AreEqual(Range.Create((int?)1, null, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..+∞)"); AreEqual(Range.TryCreate((int?)1, null, key).ToString(CultureInfo.InvariantCulture), "'Hello!':[1..+∞)"); var cultureRu = new CultureInfo("ru-RU"); var cultureEn = new CultureInfo("en-US"); AreEqual(Range.Create(1.5, 2.5, 1.1).ToString("000.000", cultureRu), "'1,1':[001,500..002,500]"); AreEqual(Range.TryCreate(1.5, 2.5, 1.1).ToString("000.000", cultureRu), "'1,1':[001,500..002,500]"); AreEqual(Range.Create(1.5, 2.5, 1.1).ToString("000.000", cultureEn), "'1.1':[001.500..002.500]"); AreEqual(Range.TryCreate(1.5, 2.5, 1.1).ToString("000.000", cultureEn), "'1.1':[001.500..002.500]"); AreEqual(Range.Create(1.5, 2.5, (string?)null).ToString(null, cultureRu), "'':[1,5..2,5]"); AreEqual(Range.TryCreate(1.5, 2.5, (string?)null).ToString(null, cultureRu), "'':[1,5..2,5]"); AreEqual(Range.Create(1.5, 2.5, (string?)null).ToString(null, cultureEn), "'':[1.5..2.5]"); AreEqual(Range.TryCreate(1.5, 2.5, (string?)null).ToString(null, cultureEn), "'':[1.5..2.5]"); }