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 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 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());
}
}
}
}