public void ConvertsWordsToNegativeNumbers()
{
Assert.Equal(-900013, WordToNumberConverter.Convert("negative nine hundred thousand thirteen"));
Assert.Equal(-18476, WordToNumberConverter.Convert("negative eighteen thousand four hundred seventy six"));
Assert.Equal(-1345678919, WordToNumberConverter.Convert("negative one billion three hundred fourty five million six hundred seventy eight thousand nine hundred nineteen"));
Assert.Equal(-1, WordToNumberConverter.Convert("negative one"));
Assert.Equal(-36, WordToNumberConverter.Convert("negative thirty six"));
}
public void ConvertsWordsToPositiveNumbers()
{
Assert.Equal(900013, WordToNumberConverter.Convert("nine hundred thousand thirteen"));
Assert.Equal(18476, WordToNumberConverter.Convert("eighteen thousand four hundred seventy six"));
Assert.Equal(1345678919, WordToNumberConverter.Convert("one billion three hundred fourty five million six hundred seventy eight thousand nine hundred nineteen"));
Assert.Equal(1, WordToNumberConverter.Convert("one"));
Assert.Equal(36, WordToNumberConverter.Convert("thirty six"));
}
public void DealsWithImproperInputs()
{
Assert.Equal(0, WordToNumberConverter.Convert(null));
Assert.Equal(0, WordToNumberConverter.Convert(""));
}
public void ConvertsZeroes()
{
Assert.Equal("zero", NumberToWordConverter.Convert(0));
Assert.Equal(0, WordToNumberConverter.Convert("zero"));
}