Update changelog and tests for clojure-unwind changes

Author: yuhan0

CHANGELOG.md

@@ -5,8 +5,8 @@
 ### New features
 
 * [#496](https://github.com/clojure-emacs/clojure-mode/issues/496): Highlight `[[wikilinks]]` in comments.
-* [#366](https://github.com/clojure-emacs/clj-refactor.el/issues/366): Add support for renaming ns aliases (`clojure-rename-ns-alias`).
-* [#410](https://github.com/clojure-emacs/clojure-mode/issues/410): Add support for adding an arity to a function (`clojure-add-arity`).
+* [#366](https://github.com/clojure-emacs/clj-refactor.el/issues/366): Add support for renaming ns aliases (`clojure-rename-ns-alias`, default binding `C-c C-r n r`).
+* [#410](https://github.com/clojure-emacs/clojure-mode/issues/410): Add support for adding an arity to a function (`clojure-add-arity`, default binding `C-c C-r a`), .
 
 ### Bugs fixed
 
@@ -21,6 +21,7 @@
 ### Changes
 
 * [#524](https://github.com/clojure-emacs/clojure-mode/issues/524): Add proper indentation rule for `delay` (same as for `future`).
+* [#538](https://github.com/clojure-emacs/clojure-mode/pull/538): Refactor `clojure-unwind` to take numeric prefix argument for unwinding N steps, and universal argument for unwinding completely. The dedicated `C-c C-r a` binding for `clojure-unwind-all`is now removed and replaced with the universal arg convention `C-u C-c C-r u`.
 
 ## 5.10.0 (2019-01-05)
 

test/clojure-mode-refactor-threading-test.el

@@ -227,6 +227,26 @@
     (clojure-unwind)
     (clojure-unwind))
 
+  (when-refactoring-it "should unwind N steps with numeric prefix arg"
+    "(->> [1 2 3 4 5]
+     (filter even?)
+     (map square)
+     sum)"
+
+    "(->> (sum (map square (filter even? [1 2 3 4 5]))))"
+
+    (clojure-unwind 3))
+
+  (when-refactoring-it "should unwind completely with universal prefix arg"
+    "(->> [1 2 3 4 5]
+     (filter even?)
+     (map square)
+     sum)"
+
+    "(sum (map square (filter even? [1 2 3 4 5])))"
+
+    (clojure-unwind '(4)))
+
   (when-refactoring-it "should unwind with function name"
     "(->> [1 2 3 4 5]
      sum