public void OutputBuilderTests_BuildProductLines_NullProductValue_ThrowsException()
{
//arrange
var sut = new OutputBuilder();
IMinMax range = GetMinMaxMock(1, 5, 3); // Irrelevant to this test
IAccumulatedProduct[] mockData =
{
GetAccumulatedProductMock("a", new double[0]),
GetAccumulatedProductMock("b", null),
GetAccumulatedProductMock("c", new double[0]),
};
IAccumulatedProducts mockDatas = GetAccumulatedProductsMock(range, mockData);
bool exceptionThrown = false;
string exceptionMessage = "";
//act
try
{
sut.BuildProductLines(mockDatas);
}
catch (InvalidOperationException e)
{
exceptionThrown = true;
exceptionMessage = e.Message;
}
//assert
Assert.IsTrue(exceptionThrown);
Assert.AreEqual("Accumulated product 1 value: not allowed to be null", exceptionMessage);
}
public void OutputBuilderTests_BuildProductLines_CorrectProductName_StringStartsWithProductNameAndAComma()
{
//arrange
var sut = new OutputBuilder();
IMinMax range = GetMinMaxMock(1, 5, 3); // Irrelevant to this test
string names = "Working";
IAccumulatedProduct[] mockData = { GetAccumulatedProductMock(names, new double[0]) };
IAccumulatedProducts mockDatas = GetAccumulatedProductsMock(range, mockData);
//act
List <string> outputString = sut.BuildProductLines(mockDatas);
//assert
Assert.AreEqual("Working, ", outputString.First());
}
public List <string> BuildProductLines(IAccumulatedProducts products)
{
if (products == null)
{
throw new ArgumentNullException(nameof(products));
}
if (products.Products == null)
{
throw new InvalidOperationException("The list of accumulated products is not allowed to be null");
}
if (!products.Products.Any())
{
throw new InvalidOperationException("The list of accumulated products is not allowed to be empty");
}
List <string> productLines = new List <string>();
int index = 0;
foreach (IAccumulatedProduct product in products.Products)
{
if (product == null)
{
throw new InvalidOperationException($"Accumulated product {index}: Not allowed to be null");
}
if (product.Name == null)
{
throw new InvalidOperationException($"Accumulated product {index} name: Not allowed to be null");
}
if (product.Values == null)
{
throw new InvalidOperationException($"Accumulated product {index} value: not allowed to be null");
}
string toOutput = string.Join(", ", product.Values);
string finalOutput = product.Name + ", " + toOutput;
productLines.Add(finalOutput);
index++;
}
return(productLines);
}
public void OutputBuilderTests_BuildProductLines_IfNoDataIn_ThrowsException()
{
//arrange
var sut = new OutputBuilder();
IMinMax range = GetMinMaxMock(1, 5, 3); // Irrelevant to this test
IAccumulatedProducts mockDatas = GetAccumulatedProductsMock(range, new IAccumulatedProduct[] { });
bool exceptionThrown = false;
string exceptionMessage = "";
//act
try
{
sut.BuildProductLines(mockDatas);
}
catch (InvalidOperationException e)
{
exceptionThrown = true;
exceptionMessage = e.Message;
}
//assert
Assert.IsTrue(exceptionThrown);
Assert.AreEqual("The list of accumulated products is not allowed to be empty", exceptionMessage);
}
