Add refactoring command clojure-rename-ns-alias (#529)

Originally requested in clj-refactor: clojure-emacs/clj-refactor.el#366.

Author: anthonygalea

clojure-mode-refactor-rename-ns-alias-test.el

@@ -0,0 +1,55 @@
+;;; clojure-mode-refactor-rename-ns-alias-test.el --- Clojure Mode: refactor rename ns alias  -*- lexical-binding: t; -*-
+
+;; This file is not part of GNU Emacs.
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'clojure-mode)
+(require 'ert)
+
+(def-refactor-test test-rename-ns-alias
+  "(ns cljr.core
+       (:require [my.lib :as lib]))
+
+     (def m #::lib{:kw 1, :n/kw 2, :_/bare 3, 0 4})
+
+     (+ (lib/a 1) (b 2))"
+  "(ns cljr.core
+       (:require [my.lib :as foo]))
+
+     (def m #::foo{:kw 1, :n/kw 2, :_/bare 3, 0 4})
+
+     (+ (foo/a 1) (b 2))"
+  (clojure--rename-ns-alias-internal "lib" "foo"))
+
+(def-refactor-test test-rename-ns-alias-with-missing-as
+  "(ns cljr.core
+       (:require [my.lib :as lib]))
+
+     (def m #::lib{:kw 1, :n/kw 2, :_/bare 3, 0 4})
+
+     (+ (lib/a 1) (b 2))"
+  "(ns cljr.core
+       (:require [my.lib :as lib]))
+
+     (def m #::lib{:kw 1, :n/kw 2, :_/bare 3, 0 4})
+
+     (+ (lib/a 1) (b 2))"
+  (clojure--rename-ns-alias-internal "foo" "bar"))
+
+(provide 'clojure-mode-refactor-rename-ns-alias-test)
+
+;;; clojure-mode-refactor-rename-ns-alias-test.el ends here