Swiftlint underscore name swift

Question

I use swiftlint in my project. The project name is ABC xx and it works fine with swiftlint. Now I decided to include Unitest in my application and I have to import @testable import ABC_xx into the swift test file which is class ABC_xxTests: XCTestCase { not I get an error with Swiftlinter which says Type Name Violation: Type name should only contain alphanumeric characters: 'ABC_xxTests' (type_name) how do I sort this error

Answer 1

The following swiftlint rule enable the use of underscore in your Swift class names:

type_name:
  allowed_symbols: "_"

EDIT: If you want to enable the use of underscore also for variable names use:

identifier_name:
  allowed_symbols: "_"

Answer 2

In addition to @carmine's answer, keep the below two things in mind while adding attributes to any rule in .swiftlint.yml:

• it should be listed in a new line
• and should be preceded with a white space.

In my case I overlooked the white space before allowed_symbols. So the linting was not working. When I added white space, it was successful.