NUnit1004

The TestCaseAttribute provided too many arguments

Topic	Value
Id	NUnit1004
Severity	Error
Enabled	True
Category	Structure
Code	TestCaseUsageAnalyzer

Description

The number of arguments provided by a TestCaseAttribute must match the number of parameters of the method.

Motivation

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

How to fix violations

Example Violation

[TestCase("1", "2")]
public void NUnit1004SampleTest(string parameter1)
{
    Assert.That(parameter1, Is.EqualTo("1"));
}

Explanation

In the sample above, there are two arguments provided by test case (TestCase("1", "2")), but only one parameter is being expected by the test itself ((string parameter1)).

Fix

Either make use of the additional argument:

[TestCase("1", "2")]
public void NUnit1003SampleTest(string parameter1, string parameter2)
{
    Assert.That(parameter1, Is.EqualTo("1"));
    Assert.That(parameter2, Is.EqualTo("2"));
}

Or remove it:

[TestCase("1")]
public void NUnit1003SampleTest(string parameter1)
{
    Assert.That(parameter1, Is.EqualTo("1"));
}

Configure severity

Via ruleset file

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

Via .editorconfig file

# NUnit1004: The TestCaseAttribute provided too many arguments
dotnet_diagnostic.NUnit1004.severity = chosenSeverity

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

Via #pragma directive

#pragma warning disable NUnit1004 // The TestCaseAttribute provided too many arguments
Code violating the rule here
#pragma warning restore NUnit1004 // The TestCaseAttribute provided too many arguments

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

#pragma warning disable NUnit1004 // The TestCaseAttribute provided too many arguments

Via attribute [SuppressMessage]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Structure",
    "NUnit1004:The TestCaseAttribute provided too many arguments",
    Justification = "Reason...")]