Parameterised Tests

February 12, 2026 ยท View on GitHub

File name suffix

Every parameterised case should have a unique file name with the parameters appended to the file name. This happens automatically for NUnit; xUnit and MSTest require the use of UseParameters() (see below).

The appending format is _ParamName=ParamValue repeated for each parameter.

A test with two parameters param1 + param2, and called twice with the values value1a + value2a and value1b + value2b would have the following file names:

  • MyTest.MyMethod_param1=value1a_param2=value2a.verified.txt
  • MyTest.MyMethod_param1=value1b_param2=value2b.verified.txt

Invalid characters

Characters that cannot be used for a file name are replaced with a dash (-).

Test frameworks:

Parameterised test usage differs based on the test framework used.