lang/go: add unit test commands

modules/lang/go/autoload.el

@@ -0,0 +1,35 @@
+;;; lang/go/autoload.el
+
+(defvar +go-test-last nil
+  "The last test run.")
+
+(defun +go--run-tests (args)
+  (save-selected-window
+    (async-shell-command (concat "go test " args))))
+
+;;;###autoload
+(defun +go/test-rerun ()
+  (interactive)
+  (if +go-test-last
+      (funcall +go-test-last)
+    (+go/run-all-tests)))
+
+;;;###autoload
+(defun +go/test-all ()
+  (interactive)
+  (+go--run-tests ""))
+
+;;;###autoload
+(defun +go/test-nested ()
+  (interactive)
+  (+go--run-tests "./..."))
+
+;;;###autoload
+(defun +go/test-single ()
+  (interactive)
+  (if (string-match "_test\\.go" buffer-file-name)
+      (save-excursion
+        (re-search-backward "^func[ ]+\\(([[:alnum:]]*?[ ]?[*]?[[:alnum:]]+)[ ]+\\)?\\(Test[[:alnum:]_]+\\)(.*)")
+        (+go--run-tests (concat "-run" "='" (match-string-no-properties 2) "'")))
+    (error "Must be in a _test.go file")))
+