public void WritePair_WhenValueNull_Throws(string value)
{
using (var stream = new MemoryStream())
using (var writer = new KeyPairFileWriter(stream, _encoding, leaveOpen: true))
{
var exception = Assert.Throws <ArgumentException>(
() => writer.WritePair("a", value));
Assert.Equal("value", exception.ParamName);
}
}
public void WritePair_WhenKeyNullOrEmpty_Throws(string key)
{
using (var stream = new MemoryStream())
using (var writer = new KeyPairFileWriter(stream, _encoding, leaveOpen: true))
{
var exception = Assert.Throws <ArgumentException>(
() => writer.WritePair(key, "b"));
Assert.Equal("key", exception.ParamName);
}
}
public void WritePair_WithValidInput_WritesContent()
{
using (var stream = new MemoryStream())
{
using (var writer = new KeyPairFileWriter(stream, _encoding, leaveOpen: true))
{
writer.WritePair("a", "b");
}
Assert.Equal(_encoding.GetBytes("a:b\n"), stream.ToArray());
}
}