NUnit1007

The method has non-void return type, but no result is expected in ExpectedResult

Topic	Value
Id	NUnit1007
Severity	Error
Enabled	True
Category	Structure
Code	TestMethodUsageAnalyzer

Description

The method has non-void return type, but no result is expected in ExpectedResult.

Motivation

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

How to fix violations

Example Violation

[TestCase(1)]
public string NUnit1007SampleTest(int inputValue)
{
    return "";
}

Explanation

No ExpectedResult was defined, but the return type of the method in our sample is of type string, meaning it does indeed return a result and we should use the ExpectedResult syntax in order to capture it.

Fix

Either modify the TestCase to add an ExpectedResult:

[TestCase(1, ExpectedResult = "")]
public string NUnit1007SampleTest(int inputValue)
{
    return "";
}

Or modify the return type of the test method to be void:

[TestCase(1)]
public void NUnit1007SampleTest(int inputValue)
{
    return Assert.That(inputValue, Is.EqualTo(1));
}

Configure severity

Via ruleset file

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

Via .editorconfig file

# NUnit1007: The method has non-void return type, but no result is expected in ExpectedResult
dotnet_diagnostic.NUnit1007.severity = chosenSeverity

where chosenSeverity can be one of none, silent, suggestion, warning, or error.

Via #pragma directive

#pragma warning disable NUnit1007 // The method has non-void return type, but no result is expected in ExpectedResult
Code violating the rule here
#pragma warning restore NUnit1007 // The method has non-void return type, but no result is expected in ExpectedResult

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

#pragma warning disable NUnit1007 // The method has non-void return type, but no result is expected in ExpectedResult

Via attribute [SuppressMessage]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Structure",
    "NUnit1007:The method has non-void return type, but no result is expected in ExpectedResult",
    Justification = "Reason...")]