NUnit1011

NUnit1011

TestCaseSource argument does not specify an existing member.

Topic	Value
Id	NUnit1011
Severity	Error
Enabled	True
Category	Structure
Code	TestCaseSourceUsesStringAnalyzer

Description

TestCaseSource argument does not specify an existing member. This will lead to an error at run-time.

Motivation

To prevent tests that will fail at runtime due to improper construction.

How to fix violations

Example Violation

[TestCaseSource("MyIncorrectTestSource")]
public void NUnit1011SampleTest(string stringValue)
{
    Assert.That(stringValue.Length, Is.EqualTo(3));
}

public static object[] MyTestSource()
{
    return new object[] {"One", "Two"};
}

Explanation

In the example above, the test case source is named MyIncorrectTestCaseSource, but the test case source is actually named MyTestSource. Because the names don't match, this will be an error.

Fix

Rename the TestCaseSource to match:

[TestCaseSource("MyTestSource")]
public void NUnit1011SampleTest(string stringValue)
{
    Assert.That(stringValue.Length, Is.EqualTo(3));
}

public static object[] MyTestSource()
{
    return new object[] {"One", "Two"};
}

Or even better, use nameof so that the compiler may assist with mis-matched names in the future:

[TestCaseSource(nameof(MyTestSource))]
public void NUnit1011SampleTest(string stringValue)
{
    Assert.That(stringValue.Length, Is.EqualTo(3));
}

public static object[] MyTestSource()
{
    return new object[] {"One", "Two"};
}

Configure severity

Via ruleset file.

Configure the severity per project, for more info see MSDN.

Via #pragma directive.

#pragma warning disable NUnit1011 // TestCaseSource argument does not specify an existing member.
Code violating the rule here
#pragma warning restore NUnit1011 // TestCaseSource argument does not specify an existing member.

Or put this at the top of the file to disable all instances.

#pragma warning disable NUnit1011 // TestCaseSource argument does not specify an existing member.

Via attribute [SuppressMessage].

[System.Diagnostics.CodeAnalysis.SuppressMessage("Structure", 
    "NUnit1011:TestCaseSource argument does not specify an existing member.",
    Justification = "Reason...")]