CODEWITHSUNDEEP
c#unit-testingnunit
Baflora
Baflora

Reputation: 119

C# Get TestCases by TestCaseSource - Reading textfile

I try to get my nunit TestCases by reading a textfile, which contains a TestCase per line. I'm using the TestCaseSourceAttribute in that case.

[Test, TestCaseSource("TestSelection")]
//TestMethod


public static object[] TestSelection()
{
    var amountOfTestCases = GetAmountTestCases(@"path\TestCases.txt");
    var result = new object[amountOfTestCases];

    for (var i = 0; i < amountOfTestCases; i++)
    {
        result[i] = new object[] { GetTestCase(i, @"path\TestCases.txt") };
    }

    return result;
}

With GetAmountTestCases() I get lines of text within a textfile and GetTestCase() reads the specific line of text to get my TestCase.

public static int GetAmountTestCases(String path)
{
    var lineCount = 0;
    using (var reader = File.OpenText(path))
    {
        while (reader.ReadLine() != null)
        {
            lineCount++;
        }
    }
    return lineCount;
}

public static String GetTestCase(int lineNum, String path)
{
    var lineCount = 0;
    String testCase = String.Empty;
    using (var reader = File.OpenText(path))
    {
        while (reader.ReadLine() != null)
        {
            if (lineCount == lineNum)
            {
                testCase = reader.ReadLine();
            }
            else
            {
                lineCount++;
            }

        }
    }
    return testCase;
}

After building the .dll contains test modules with 'null' as content. I cant even Debug without a specific TestCase within my Code.

Upvotes: 0

Views: 233

Answers (1)

Davey van Tilburg
Davey van Tilburg

Reputation: 718

You have quite a complex way of going about it, the following code works for me:

[Test, TestCaseSource("GetMyFileData")]
//Method

public static string[] GetMyFileData()
{
    var path = @"C:\temp\MyFile.txt";
    return File.ReadAllLine(path)
               .ToArray();
}

Please double check if your path is correct.

If it is a relative path to the file that is deployed on build, check if it is configured correctly: its Build Action should be something like Content and Copy to output directory should be Copy of newer or Copy always

Upvotes: 1

Related Questions