public void ShouldBeAbleToConvertANumberThatIsNegativeABillion()
{
// Setup
const double numberToFormat = -1000000000;
INumberFormatter formatter = new BillionNumberFormatter();
// Test
bool result = formatter.CanHandle(numberToFormat);
//Verify
Assert.AreEqual(true, result);
}
public void ShouldConvertBillionWithDecimalsToDecimalThatDoesNotRoundUp()
{
// Setup
const double numberToFormat = 12330000000.23;
const string expectedResult = "12.3B";
INumberFormatter formatter = new BillionNumberFormatter();
// Test
string result = formatter.Handle(numberToFormat);
//Verify
Assert.AreEqual(expectedResult, result);
}
public void ShouldConvertBillionToNoDecimalNumber()
{
// Setup
const double numberToFormat = 1000000000;
const string expectedResult = "1B";
INumberFormatter formatter = new BillionNumberFormatter();
// Test
string result = formatter.Handle(numberToFormat);
//Verify
Assert.AreEqual(expectedResult, result);
}
public void ShouldConvertNegativeABillionToDecimalThatHasToRoundUp()
{
// Setup
const double numberToFormat = -12350000000;
const string expectedResult = "-12.4B";
INumberFormatter formatter = new BillionNumberFormatter();
// Test
string result = formatter.Handle(numberToFormat);
//Verify
Assert.AreEqual(expectedResult, result);
}
public void ShouldNotAbleToConvertNumberThatIsLessThanABillion()
{
// Setup
const double numberToFormat = 999999999;
INumberFormatter formatter = new BillionNumberFormatter();
// Test
bool result = formatter.CanHandle(numberToFormat);
//Verify
Assert.AreEqual(false, result);
}
