expectfirst

This linter checks argument order of test assertion. The expected-like variable name must be placed before the actual-like variable name.

For example:

require.Equal(t, expectNum, actualNum) // pass
require.Equal(t, actualNum, expectNum) // warn

In VScode:

Installation

1. git clone https://github.com/JiaheEatingOut/expectfirst
2. cd expectfirst
3. make build
4. go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.52.2 (Install golangci-lint and custom linter locally, so that they are compile with the exact same stack, it's related to how Go plugins work.)
5. Add the below configs to your project .golingci.yml

linters-settings:
  custom:
    expectfirst:
      path: "<LINTER_FOLDER>/expectfirst.so"

linters:
  enable:
    - expectfirst

5. Ready to Go!

Development

Add more rules:

1. Add rule to pkg/analyzer/
2. Add test to testdata/
3. Run make test
4. Update .golangci.yml