Maintain code quality of unit tests

One of the most powerful ReSharper features, code inspection, comes in handy when you write unit tests. In addition to hundreds of general-purpose inspections, there is also a number of dedicated inspections that target problems specific to unit tests:

NUnit (30 inspections)

These inspections detect code issues related to NUnit tests.

Inspection	Default severity
NUnit. Async test method must return Task or Task<T>	Warning
NUnit. Cannot resolve symbol in TestCaseSource or ValueSource attribute	Warning
NUnit. Duplicate values	Warning
NUnit. Ignored parameter attribute	Warning
NUnit. Implicitly unspecified null values	Warning
NUnit. Incompatible argument type or incorrect argument value	Warning
NUnit. Incompatible expected result type or incorrect value	Warning
NUnit. Incorrect range bounds. 'to' must be greater than or equal to 'from'	Warning
NUnit. Mismatch of the range step sign	Warning
NUnit. Missing arguments in TestCase attribute	Warning
NUnit. Missing expected result for non-void test method	Warning
NUnit. No values provided in the attributes	Warning
NUnit. Non-public test method	Warning
NUnit. Range 'step' parameter value must be non-zero	Warning
NUnit. Redundant argument in TestCase attribute	Warning
NUnit. Redundant argument instead of ExpectedResult	Warning
NUnit. Redundant expected result for void test method	Warning
NUnit. Specified attribute values produce too many tests	Disabled
NUnit. Specified values are not compatible with the test parameter type	Warning
NUnit. Test case Result property duplicates ExpectedResult	Warning
NUnit. Test case Result property is obsolete	Warning
NUnit. Test case source must be field, property, or method	Warning
NUnit. Test case source must be non-abstract and implement IEnumerable	Warning
NUnit. Test case source must be static	Warning
NUnit. The maximum range value is not reachable with the step value	Warning
NUnit. Values for test method parameters are not provided	Warning
NUnit. Values in range do not fit the type of the test parameter	Warning
NUnit.AutoFixture. Incompatible argument type or incorrect argument value	Warning
NUnit.AutoFixture. Missed Test or TestFixture attribute	Warning
NUnit.AutoFixture. Redundant argument in InlineAutoData attribute	Warning

Xunit (1 inspection)

These inspections detect code issues related to xUnit.Net tests.

Inspection	Default severity
Console output in Xunit tests	Warning

Last modified: 19 August 2021