public void To_NullFrom_Throws()
{
var underTest = new FromStringConverter();
var ex = Assert.Throws <ArgumentNullException>(() => underTest.To <int>(null));
Assert.Equal("from", ex.ParamName);
}
public void To_ConversionWorks_ReturnsValueFromConversion()
{
var from = "42";
var expected = int.Parse(from);
var underTest = new FromStringConverter();
var actual = underTest.To <int>(from);
Assert.Equal(expected, actual);
}
public void To_TypeIsNotSupported_Throws()
{
var underTest = new FromStringConverter();
var ex = Assert.Throws <InvalidOperationException>(() => underTest.To <object>("object"));
}
public void To_ConversionThrows_ExceptionIsWrapped()
{
var underTest = new FromStringConverter();
var ex = Assert.Throws <InvalidCastException>(() => underTest.To <int>("forty-two"));
}
