NUnit3004

Field should be Disposed in TearDown or OneTimeTearDown method

Topic	Value
Id	NUnit3004
Severity	Info
Enabled	True
Category	Suppressor
Code	TypesThatOwnDisposableFieldsShouldBeDisposableSuppressor

Description

Field/Property is Disposed in TearDown or OneTimeTearDown method

Motivation

The Roslyn analyzer fires CA1001 for classes that have IDisposable members, but itself is not IDisposable.

Many NUnit tests initialize fields in tests or a SetUp method and then Dispose them in the TearDown method.

How to fix violations

Ensure that all IDisposable fields have a Dispose call in the TearDown method.

Configure severity

The rule has no severity, but can be disabled.

Via ruleset file

To disable the rule for a project, you need to add a ruleset file

<?xml version="1.0" encoding="utf-8"?>
<RuleSet Name="NUnit.Analyzer Suppressions" Description="DiagnosticSuppression Rules" ToolsVersion="12.0">
  <Rules AnalyzerId="DiagnosticSuppressors" RuleNamespace="NUnit.NUnitAnalyzers">
    <Rule Id="NUnit3001" Action="Info" /> <!-- Possible Null Reference -->
    <Rule Id="NUnit3002" Action="Info" /> <!-- NonNullableField/Property is Uninitialized -->
    <Rule Id="NUnit3003" Action="Info" /> <!-- Avoid Uninstantiated Internal Classes -->
    <Rule Id="NUnit3004" Action="Info" /> <!-- Types that own disposable fields should be disposable -->
  </Rules>
</RuleSet>

and add it to the project like:

<PropertyGroup>
  <CodeAnalysisRuleSet>NUnit.Analyzers.Suppressions.ruleset</CodeAnalysisRuleSet>
</PropertyGroup>

For more info about rulesets see MSDN.

Via .editorconfig file

This is currently not working. Waiting for Roslyn

# NUnit3004: Field should be Disposed in TearDown or OneTimeTearDown method
dotnet_diagnostic.NUnit3004.severity = none