public void CanReadWriteNull() { var sut = _fixture.Create <DbaseNullableDouble>(); sut.Value = null; using (var stream = new MemoryStream()) { using (var writer = new BinaryWriter(stream, Encoding.ASCII, true)) { sut.Write(writer); writer.Flush(); } stream.Position = 0; using (var reader = new BinaryReader(stream, Encoding.ASCII, true)) { var result = new DbaseNullableDouble(sut.Field); result.Read(reader); Assert.Equal(sut.Field, result.Field); Assert.Equal(sut.Value, result.Value); } } }
public void LengthOfNegativeValueBeingSetCanNotExceedFieldLength() { var length = DbaseNullableDouble.MaximumLength; var decimalCount = _fixture.GenerateDbaseDoubleDecimalCount(length); var sut = new DbaseNullableDouble( new DbaseField( _fixture.Create <DbaseFieldName>(), DbaseFieldType.Number, _fixture.Create <ByteOffset>(), length, decimalCount ) ); Assert.Throws <ArgumentException>(() => sut.Value = double.MinValue); }
public void CanReadWriteWithMaxDecimalCount() { var length = DbaseNullableDouble.MaximumLength; var decimalCount = DbaseNullableDouble.MaximumDecimalCount; var sut = new DbaseNullableDouble( new DbaseField( _fixture.Create <DbaseFieldName>(), DbaseFieldType.Number, _fixture.Create <ByteOffset>(), length, decimalCount ) ); using (var random = new PooledRandom()) { sut.Value = new DbaseFieldNumberGenerator(random) .GenerateAcceptableValue(sut); using (var stream = new MemoryStream()) { using (var writer = new BinaryWriter(stream, Encoding.ASCII, true)) { sut.Write(writer); writer.Flush(); } stream.Position = 0; using (var reader = new BinaryReader(stream, Encoding.ASCII, true)) { var result = new DbaseNullableDouble(sut.Field); result.Read(reader); Assert.Equal(sut.Field, result.Field); Assert.Equal(sut.Value, result.Value); } } } }
public void CanNotReadPastEndOfStream() { var sut = _fixture.Create <DbaseNullableDouble>(); using (var stream = new MemoryStream()) { using (var writer = new BinaryWriter(stream, Encoding.ASCII, true)) { writer.Write(_fixture.CreateMany <byte>(new Random().Next(0, sut.Field.Length.ToInt32())).ToArray()); writer.Flush(); } stream.Position = 0; using (var reader = new BinaryReader(stream, Encoding.ASCII, true)) { var result = new DbaseNullableDouble(sut.Field); Assert.Throws <EndOfStreamException>(() => result.Read(reader)); } } }
public void WritesExcessDecimalsAsZero() { var length = _fixture.GenerateDbaseDoubleLength(); var decimalCount = _fixture.GenerateDbaseDoubleDecimalCount(length); var sut = new DbaseNullableDouble( new DbaseField( _fixture.Create <DbaseFieldName>(), DbaseFieldType.Number, _fixture.Create <ByteOffset>(), length, decimalCount ), 0.0); using (var stream = new MemoryStream()) { using (var writer = new BinaryWriter(stream, Encoding.ASCII, true)) { sut.Write(writer); writer.Flush(); } stream.Position = 0; if (decimalCount.ToInt32() == 0) { Assert.Equal( "0".PadLeft(length.ToInt32()), Encoding.ASCII.GetString(stream.ToArray())); } else { Assert.Equal( new string(' ', length.ToInt32() - decimalCount.ToInt32() - 2) + "0." + new string('0', decimalCount.ToInt32()), Encoding.ASCII.GetString(stream.ToArray()) ); } } }
public double?GenerateAcceptableValue(DbaseNullableDouble value) { double?result = default; // null only if (value.Field.Length < DbaseNullableDouble.MinimumLength) { return(result); } // null or positive only if (value.Field.Length < DbaseNullableDouble.NegativeValueMinimumLength) { switch (_random.Next() % 2) { //case 0: null case 1: result = GeneratePositiveNullableDoubleValue(value.Field); break; } return(result); } // null or positive or negative switch (_random.Next() % 3) { //case 0: null case 1: result = GeneratePositiveNullableDoubleValue(value.Field); break; case 2: result = GenerateNegativeNullableDoubleValue(value.Field); break; } return(result); }
public void CanReadWriteNegative() { using (var random = new PooledRandom()) { var sut = new DbaseNullableDouble( new DbaseField( _fixture.Create <DbaseFieldName>(), DbaseFieldType.Number, _fixture.Create <ByteOffset>(), DbaseNullableDouble.NegativeValueMinimumLength, new DbaseDecimalCount(1) ) ); sut.Value = new DbaseFieldNumberGenerator(random) .GenerateAcceptableValue(sut); using (var stream = new MemoryStream()) { using (var writer = new BinaryWriter(stream, Encoding.ASCII, true)) { sut.Write(writer); writer.Flush(); } stream.Position = 0; using (var reader = new BinaryReader(stream, Encoding.ASCII, true)) { var result = new DbaseNullableDouble(sut.Field); result.Read(reader); Assert.Equal(sut, result, new DbaseFieldValueEqualityComparer()); } } } }
public void Visit(DbaseNullableDouble value) { value.Value = _generator.GenerateAcceptableValue(value); }
public void Visit(DbaseNullableDouble value) { HashCode = value.Value?.GetHashCode() ?? 0; }
public void Visit(DbaseNullableDouble value) { Comparer = new DelegatingDbaseFieldValueEqualityComparer <DbaseNullableDouble>( new DbaseNullableDoubleEqualityComparer(_precision)); }