public void IsTextWithInvalidIndexAndLength()
{
var buffer = Unpooled.Buffer();
try
{
buffer.WriteBytes(new byte[4]);
int[][] validIndexLengthPairs = new[] {
new [] { 4, 0 },
new [] { 0, 4 },
new [] { 1, 3 },
};
foreach (var pair in validIndexLengthPairs)
{
Assert.True(ByteBufferUtil.IsText(buffer, pair[0], pair[1], Encoding.ASCII));
}
int[][] invalidIndexLengthPairs = new[] {
new [] { 4, 1 },
new [] { -1, 2 },
new [] { 3, -1 },
new [] { 3, -2 },
new [] { 5, 0 },
new [] { 1, 5 },
};
foreach (var pair in invalidIndexLengthPairs)
{
Assert.Throws <IndexOutOfRangeException>(() => ByteBufferUtil.IsText(buffer, pair[0], pair[1], Encoding.ASCII));
}
}
finally
{
buffer.Release();
}
}
private static void AssertIsText(byte[] bytes, bool expected, Encoding charset)
{
var buffer = Unpooled.Buffer();
try
{
buffer.WriteBytes(bytes);
Assert.Equal(expected, ByteBufferUtil.IsText(buffer, charset));
}
finally
{
buffer.Release();
}
}