Simple Maven + JUnit test runner for Emacs.

test-runner.el

;;; A quick way to run JUnit tests:
;;; `C-x t u` runs all the test cases in a unit.
;;; `C-x t c` runs a single test case.
;;;
;;; Simply add the snippet at the end of `init.el` or `.emacs`.
;;; NOTE: It assumes you are using projectile to manage the project.
;;;
;;; By Bahman Movaqar

;; runs all test cases in the current class
(defun run-test-unit ()
  (interactive)
  (require 'imenu)
  (let* ((file-name (buffer-file-name))
         (class-name (car (split-string
                           (car (last (split-string file-name "/")))
                           "\\.")))
         (root (projectile-project-root))
         (mvn-cmd (concat "cd " root " && "
                          "mvn -Dtest=" class-name " test ")))
    (start-process "test-runner"
                   "test-runner"
                   "/bin/bash"
                   "-c"
                   mvn-cmd))
  (switch-to-buffer "test-runner"))

;; prompts for a single test case in the current class and runs it
(defun run-test-case ()
  (interactive)
  (require 'imenu)
  (let* ((file-name (buffer-file-name))
         (class-name (car (split-string
                           (car (last (split-string file-name "/")))
                           "\\.")))
         (test-case (car (imenu-choose-buffer-index "Test case: ")))
         (root (projectile-project-root))
         (mvn-cmd (concat "cd " root " && "
                          "mvn -Dtest=" class-name "#" test-case " test ")))
    (start-process "test-runner"
                   "test-runner"
                   "/bin/bash"
                   "-c"
                   mvn-cmd))
  (switch-to-buffer "test-runner"))

; key bindings
(global-set-key (kbd "C-x t u") 'run-test-unit)
(global-set-key (kbd "C-x t c") 'run-test-case)