NUnit1038

The type of the attribute values doesn't match the parameter type

Topic	Value
Id	NUnit1038
Severity	Error
Enabled	True
Category	Structure
Code	RangeUsageAnalyzer

Description

Ensure that the attribute and parameter types match.

Motivation

The Range attribute is used to specify a range of values for a parameter in a test method. The type of the range values must match the type of the parameter. If NUnit cannot match the types, it will throw an exception at runtime. NUnit rules are that an int can be assigned to any integral type or to a double or decimal.

[Test]
public void TestMethod([Range(1.0, 2.0, 0.1)] int value)
{
    // Test code here
}

How to fix violations

Ensure that the type of the range values matches the type of the parameter.

[Test]
public void TestMethod([Range(1.0, 2.0, 0.1)] double value)
{
    // Test code here
}

Configure severity

Via ruleset file

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

Via .editorconfig file

# NUnit1038: The type of the attribute values doesn't match the parameter type
dotnet_diagnostic.NUnit1038.severity = chosenSeverity

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

Via #pragma directive

#pragma warning disable NUnit1038 // The type of the attribute values doesn't match the parameter type
Code violating the rule here
#pragma warning restore NUnit1038 // The type of the attribute values doesn't match the parameter type

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

#pragma warning disable NUnit1038 // The type of the attribute values doesn't match the parameter type

Via attribute [SuppressMessage]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Structure",
    "NUnit1038:The type of the attribute values doesn't match the parameter type",
    Justification = "Reason...")]