NUnit1003

The TestCaseAttribute provided too few arguments

Topic	Value
Id	NUnit1003
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")]
public void NUnit1003SampleTest(string parameter1, string parameter2)
{
    Assert.That(parameter1, Is.EqualTo("1"));
    Assert.That(parameter2, Is.EqualTo("2"));
}

Explanation

In the sample above, the test expects two parameters ((string parameter1, string parameter2)), but only one argument is supplied by the test case (TestCase("1")).

Fix

Either add 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 the use of that parameter:

[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

# NUnit1003: The TestCaseAttribute provided too few arguments
dotnet_diagnostic.NUnit1003.severity = chosenSeverity

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

Via #pragma directive

#pragma warning disable NUnit1003 // The TestCaseAttribute provided too few arguments
Code violating the rule here
#pragma warning restore NUnit1003 // The TestCaseAttribute provided too few arguments

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

#pragma warning disable NUnit1003 // The TestCaseAttribute provided too few arguments

Via attribute [SuppressMessage]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Structure",
    "NUnit1003:The TestCaseAttribute provided too few arguments",
    Justification = "Reason...")]