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Ram 🐏 — a golang opiniated continuous testing tool

This is a very opiniated « continuous testing » tool for =Go=. In a nutshell it does : watch a folder (gopath or not…) and execute tests when file changes.

It supports:

  • changing code in a package will only re-run tests on this package
  • changing a test code, it will only re-run that test

Install

go get -u github.com/vdemeester/ram

Examples

On knative/build-pipeline 🎉

$ ram -d ./pkg -d ./cmd -- -v
 INFO Watching directories: ./pkg, pkg/apis, pkg/apis/pipeline, pkg/apis/pipeline/v1alpha1, pkg/client, pkg/client/clientset, pkg/client/clientset/versioned, pkg/client/informers, pkg/client/informers/externalversions, pkg/client/listers, pkg/client/listers/pipeline, pkg/errors, pkg/foo, pkg/logging, pkg/reconciler, pkg/reconciler/testing, pkg/reconciler/v1alpha1, pkg/reconciler/v1alpha1/pipeline, pkg/reconciler/v1alpha1/pipelinerun, pkg/reconciler/v1alpha1/taskrun, pkg/system, ./cmd/, cmd/controller, cmd/controller/kodata, cmd/kubeconfigwriter, cmd/kubeconfigwriter/kodata, cmd/webhook, cmd/webhook/kodata
 INFO Run go test -v ./${dir}
┌─────────────┬──────────────────────┐
│ filewatcher │ go test -v ./pkg/foo │
└─────────────┴──────────────────────┘
=== RUN   TestBar
--- PASS: TestBar (0.00s)
=== RUN   TestFoo
--- PASS: TestFoo (0.00s)
PASS
ok      github.com/knative/build-pipeline/pkg/foo       (cached)
┌────┬────────────────┬──────────────┐
│ OK │ pkg/foo/foo.go │ 299.754067ms │
└────┴────────────────┴──────────────┘
┌─────────────┬──────────────────────────────────────────┐
│ filewatcher │ go test -v ./pkg/foo -test.run ^TestFoo$ │
└─────────────┴──────────────────────────────────────────┘
=== RUN   TestFoo
--- PASS: TestFoo (0.00s)
PASS
ok      github.com/knative/build-pipeline/pkg/foo       (cached)
┌────┬─────────────────────┬──────────────┐
│ OK │ pkg/foo/foo_test.go │ 255.015843ms │
└────┴─────────────────────┴──────────────┘
┌─────────────┬──────────────────────────────────────────┐
│ filewatcher │ go test -v ./pkg/foo -test.run ^TestBar$ │
└─────────────┴──────────────────────────────────────────┘
=== RUN   TestBar
--- PASS: TestBar (0.00s)
PASS
ok      github.com/knative/build-pipeline/pkg/foo       (cached)
┌────┬─────────────────────┬──────────────┐
│ OK │ pkg/foo/bar_test.go │ 258.800903ms │
└────┴─────────────────────┴──────────────┘

Usage

See ram --help

Credits

Huge props to @dnephin for filewatcher 🤗