Question

I have the following strings:

       Actual       |   Expected
"The Actual String" | "The"
                    | "Actual"
                    | "String"
                    | "Other string"
                    |    ...

I need to create a method that will Assert that any of the Expected strings is contained in the actual string, something like this:

[TestClass]
public class UnitTest
{
    [TestMethod]
    public void TestMethod()
    {
        //Assertion Passed
        AssertContainsString("The Actual String", "The"); 

        //Assertion Passed
        AssertContainsString("The Actual String", "Something", "Actual"); 

        //Assertion Failed
        AssertContainsString("The Actual String", "Something", "Something Else"); 
    }

    public void AssertContainsString(string actual, params string[] expected)
    {

    }
}

I tried the CollectionAssert.Contains method but it didn’t work. Is there a quick method I can use without iterating into the expected strings?

Answer 1

It returns true if all the values of expected array is found in actual variable:

bool foundall = expected.Except(actual.Split(' ')).Count()==0;

Return true even if just one value is contained in the actual string:

bool ans = expected.Except(actual.Split(' ')).Count() != expected.Length;