add testcase

test/test_all.scad

@@ -69,6 +69,7 @@ include <util/test_split_str.scad>;
 include <util/test_parse_number.scad>;
 include <util/test_slice.scad>;
 include <util/test_sort.scad>;
+include <util/test_reverse.scad>;
 
 // Pixel
 include <pixel/test_px_line.scad>;

test/util/test_reverse.scad

@@ -0,0 +1,12 @@
+use <unittest.scad>;
+use <util/reverse.scad>;
+
+module test_reverse() {
+    echo("==== test_reverse ====");
+
+    lt = [1, 2, 3, 4, 5];
+
+    assert([5, 4, 3, 2, 1] == reverse(lt)); 
+}
+
+test_reverse();