move expect macro nearer its first use

rover.fnl

@@ -1,18 +1,6 @@
 (local { : view } (require :fennel))
 (local { : merge } (require :lume))
 
-;; who needs a test framework when you have lisp macros?
-(macro expect [text actual expected]
-  `(let [actual# ,actual]
-     (or (match actual#
-           ,expected true)
-         (assert false (view {
-                              :text ,text
-                              :expected ,(view expected)
-                              :actual actual#
-                              })))))
-
-
 (fn wrap-longitude [x]
   (if (<= x -180) (wrap-longitude (+ x 360))
       (< 180 x)   (wrap-longitude (- x 360))
@@ -80,6 +68,19 @@
    : direction
    })
 
+;;;; TESTS
+
+;; who needs a test framework when you have lisp macros?
+(macro expect [text actual expected]
+  `(let [actual# ,actual]
+     (or (match actual#
+           ,expected true)
+         (assert false (view {
+                              :text ,text
+                              :expected ,(view expected)
+                              :actual actual#
+                              })))))
+
 (let [r (rover 7 15 :n)]
   (expect
    "rover knows (x,y) and the direction (N,S,E,W) it is facing"
@@ -182,4 +183,7 @@
         (execute (rover 0 89 :n) [:f :r :f])
         {:x 90 :y 89 :direction :s})
 
+
+;; "TODO: deal with the south pole special casing"
+
 (print "OK")