Implement (and test) hope_list:divide/2

[hope.git] / test / hope_list_SUITE.erl

diff --git a/test/hope_list_SUITE.erl b/test/hope_list_SUITE.erl
index e1f8375..386cdc6 100644 (file)
--- a/test/hope_list_SUITE.erl
+++ b/test/hope_list_SUITE.erl
@@ -20,6 +20,7 @@
     , t_manual_map_result/1
     , t_manual_map_rev/1
     , t_manual_map_slow/1
+    , t_manual_divide/1
     ]).
 
 
@@ -49,6 +50,7 @@ groups() ->
         , t_manual_map_result
         , t_manual_map_rev
         , t_manual_map_slow
+        , t_manual_divide
         ],
     Properties = [parallel],
     [{?GROUP, Properties, Tests}].
@@ -84,6 +86,35 @@ t_manual_map_slow(_Cfg) ->
     [2, 3, 4] = hope_list:map_slow([1, 2, 3], F),
     []        = hope_list:map_slow([], F).
 
+t_manual_divide(_Cfg) ->
+    try
+        hope_list:divide([a, b, c], -1)
+    catch
+        error:hope_list__divide__size_must_be_a_positive_integer -> ok
+    end,
+    try
+        hope_list:divide([a, b, c], 0)
+    catch
+        error:hope_list__divide__size_must_be_a_positive_integer -> ok
+    end,
+    [[c], [b], [a]] = hope_list:divide([a, b, c], 1),
+    [[c], [b, a]]   = hope_list:divide([a, b, c], 2),
+    [[c, b, a]]     = hope_list:divide([a, b, c], 3),
+    [[c, b, a]]     = hope_list:divide([a, b, c], 4),
+    [[c, b, a]]     = hope_list:divide([a, b, c], 5),
+    try
+        hope_list:divide([], 0)
+    catch
+        error:hope_list__divide__size_must_be_a_positive_integer -> ok
+    end,
+    try
+        hope_list:divide([], -1)
+    catch
+        error:hope_list__divide__size_must_be_a_positive_integer -> ok
+    end,
+    [[f, e], [d,   c], [b, a]] = hope_list:divide([a, b, c, d, e, f], 2),
+    [[f, e,   d], [c,   b, a]] = hope_list:divide([a, b, c, d, e, f], 3).
+
 %% =============================================================================
 %%  Generated test cases
 %% =============================================================================