extend Array#permutations: test

bakkdoor · Nov 15, 2013 · 27583ce · 27583ce
1 parent af2a438
commit 27583ce
Showing 1 changed file with 9 additions and 5 deletions.
diff --git a/tests/array.fy b/tests/array.fy
@@ -572,11 +572,15 @@ FancySpec describe: Array with: {
   }
 
   it: "returns an array of permutations of self" with: 'permutations: when: {
-    [] permutations to_a      is: [[]]
-    [] permutations: 0 . to_a is: [[]]
-    [1] permutations to_a     is: [[1]]
-    [1,2] permutations to_a   is: [[1,2], [2,1]]
-    [1,2,3] permutations to_a is: \
+    [] permutations to_a           is: [[]]
+    [] permutations: 0 . to_a      is: [[]]
+    [1] permutations to_a          is: [[1]]
+    [1,2] permutations to_a        is: [[1,2], [2,1]]
+
+    [1,2,3] permutations: 2 . to_a is: \
+      [[1, 2], [1, 3], [2, 1], [2, 3], [3, 1], [3, 2]]
+
+    [1,2,3] permutations to_a      is: \
       [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
   }
 }