NUnit4001

Simplify the Values attribute

Topic	Value
Id	NUnit4001
Severity	Info
Enabled	True
Category	Style
Code	SimplifyValuesAnalyzer

Description

Consider removing unnecessary parameters from the ValuesAttribute.

Motivation

When used without any arguments, the [Values] attribute on a (nullable) boolean or an (nullable) enum parameter will automatically include all possible values.

Therefore the Values attribute like

[Test]
public void MyBoolTest([Values(true, false)] bool value) { /* ... */ } 

can be simplified to

[Test]
public void MyBoolTest([Values] bool value) { /* ... */ } 

How to fix violations

Remove all arguments of the Values attribute.

Configure severity

Via ruleset file

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

Via .editorconfig file

# NUnit4001: Simplify the Values attribute
dotnet_diagnostic.NUnit4001.severity = chosenSeverity

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

Via #pragma directive

#pragma warning disable NUnit4001 // Simplify the Values attribute
Code violating the rule here
#pragma warning restore NUnit4001 // Simplify the Values attribute

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

#pragma warning disable NUnit4001 // Simplify the Values attribute

Via attribute [SuppressMessage]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Style",
    "NUnit4001:Simplify the Values attribute",
    Justification = "Reason...")]