public void When_Calculate(
decimal taxRate,
decimal taxableAmount,
decimal expectedTaxAmount)
{
// Arrange
var taxCalculate =
new TaxCalculate();
var taxCalculateOptions =
new TaxCalculateOptions
{
TaxRate = taxRate,
TaxableAmount = taxableAmount
};
// Act
var taxAmount =
taxCalculate.Calculate(
taxCalculateOptions);
// Assert
Assert.Equal(expectedTaxAmount, taxAmount);
}
public IActionResult Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] TaxCalculateOptions taxCalculateOptions,
ILogger log)
{
log.LogInformation("C# HTTP trigger function processed a request.");
var taxAmount =
_taxCalculate.Calculate(
taxCalculateOptions);
return(new OkObjectResult($"The tax amount is {taxAmount:C2}."));
}
public decimal Calculate(
TaxCalculateOptions taxCalculateOptions)
{
if (taxCalculateOptions.TaxableAmount < 0)
{
throw new ArgumentOutOfRangeException(nameof(taxCalculateOptions.TaxableAmount), "'taxableAmount' must be greater than 0.");
}
var taxAmount =
taxCalculateOptions.TaxableAmount * taxCalculateOptions.TaxRate;
// This rounds the result to two decimal places, e.g. 6.66666666 becomes 6.67
return(decimal.Round(taxAmount, 2, MidpointRounding.AwayFromZero));
}
public void When_Calculate(
decimal taxRate,
decimal taxableAmount,
decimal expectedTaxAmount)
{
// Arrange
var taxCalculate =
new TaxCalculate();
var taxCalculateOptions =
new TaxCalculateOptions
{
TaxRate = taxRate,
TaxableAmount = taxableAmount
};
var taxCalculateHttpTrigger =
new TaxCalculateHttpTrigger(
taxCalculate);
// Act
var result =
taxCalculateHttpTrigger.Run(
taxCalculateOptions,
_logger);
// Assert
Assert.IsType <OkObjectResult>(result);
var okObjectResult =
(OkObjectResult)result;
Assert.Equal($"The tax amount is {expectedTaxAmount:C2}.", okObjectResult.Value);
}
