Set Up Test Method with different inputs

Question

I want to test the following method in C# for all code paths.

public int foo (int x)
{
    if(x == 1)
        return 1;
    if(x==2)
        return 2;
    else
          


        

Answer 1

You can use XML, Database, or CSV datasources MS Test. Create FooTestData.xml:

  1
  2

And set it as datasource for your test:

[TestMethod]
[DeploymentItem("ProjectName\\FooTestData.xml")]
[DataSource("Microsoft.VisualStudio.TestTools.DataSource.XML",
                   "|DataDirectory|\\FooTestData.xml", "Row",
                    DataAccessMethod.Sequential)]
public void FooTest()
{
    int x = Int32.Parse((string)TestContext.DataRow["Data"]);
    // some assert
}

BTW with NUnit framework it's match easier - you can use TestCase attribute to provide test data:

[TestCase(1)]
[TestCase(2)]
public void FooTest(int x)
{
   // some assert
}