public void AppendOverCountWithIndexThrows()
{
using (var buffer = new StringBuffer())
{
Action action = () => buffer.Append("A", startIndex: 1, count: 1);
action.ShouldThrow<ArgumentOutOfRangeException>();
}
}
public void AppendNegativeIndexThrows()
{
using (var buffer = new StringBuffer())
{
Action action = () => buffer.Append("a", startIndex: -1);
action.ShouldThrow<ArgumentOutOfRangeException>();
}
}
public void AppendNullStringBufferThrows()
{
using (var buffer = new StringBuffer())
{
Action action = () => buffer.Append((StringBuffer)null);
action.ShouldThrow<ArgumentNullException>();
}
}
public void AppendTests(string source, string value, int startIndex, int count, string expected)
{
// From string
using (var buffer = new StringBuffer(source))
{
buffer.Append(value, startIndex, count);
buffer.ToString().Should().Be(expected);
}
// From buffer
using (var buffer = new StringBuffer(source))
using (var valueBuffer = new StringBuffer(value))
{
if (count == -1)
buffer.Append(valueBuffer, (ulong)startIndex);
else
buffer.Append(valueBuffer, (ulong)startIndex, (ulong)count);
buffer.ToString().Should().Be(expected);
}
}
public void SubStringIndexPlusCountCombinedOutOfRangeThrows()
{
using (var buffer = new StringBuffer("a"))
{
Action action = () => buffer.SubString(startIndex: 1, count: 1);
action.ShouldThrow<ArgumentOutOfRangeException>().And.ParamName.Should().Be("startIndex");
buffer.Append("b");
action.ShouldNotThrow<ArgumentOutOfRangeException>();
action = () => buffer.SubString(startIndex: 1, count: 2);
action.ShouldThrow<ArgumentOutOfRangeException>().And.ParamName.Should().Be("count");
}
}
public void SubStringIndexOverLengthThrows()
{
using (var buffer = new StringBuffer())
{
Action action = () => buffer.SubString(startIndex: 1);
action.ShouldThrow<ArgumentOutOfRangeException>().And.ParamName.Should().Be("startIndex");
buffer.Append("a");
action.ShouldThrow<ArgumentOutOfRangeException>().And.ParamName.Should().Be("startIndex");
buffer.Append("b");
action.ShouldNotThrow();
}
}
