Add a basic smoke test for our major mode

See Groovy-Emacs-Modes#49.

.gitignore

@@ -1 +1,2 @@
 *.elc
+.cask

.travis.yml

@@ -0,0 +1,20 @@
+language: generic
+sudo: false
+before_install:
+  - curl -fsSkL https://gist.github.com/rejeep/ebcd57c3af83b049833b/raw > x.sh && source ./x.sh
+  - evm install $EVM_EMACS --use --skip
+  - cask
+env:
+  - EVM_EMACS=emacs-25.1-travis
+  - EVM_EMACS=emacs-git-snapshot-travis
+script:
+  - emacs --version
+  - cask exec ert-runner
+
+notifications:
+  email: false
+
+matrix:
+  fast_finish: true
+  allow_failures:
+    - env: EVM_EMACS=emacs-git-snapshot-travis

Cask

@@ -1,2 +1,7 @@
 (source gnu)
 (source melpa)
+
+(development
+ (depends-on "ert-runner")
+ (depends-on "undercover")
+ (depends-on "f"))

test/test-helper.el

@@ -0,0 +1,14 @@
+;;; test-helper.el --- Helper for tests              -*- lexical-binding: t; -*-
+
+;;; Code:
+
+(require 'ert)
+(require 'f)
+
+(let ((peval-dir (f-parent (f-dirname (f-this-file)))))
+  (add-to-list 'load-path peval-dir))
+
+(require 'undercover)
+(undercover "groovy-mode.el"
+	    (:exclude "*-test.el")
+	    (:report-file "/tmp/undercover-report.json"))

test/unit-test.el

@@ -0,0 +1,7 @@
+(require 'ert)
+(require 'groovy-mode)
+
+(ert-deftest groovy-smoke-test ()
+  "Ensure that we can activate the Groovy major mode."
+  (with-temp-buffer
+    (groovy-mode)))