Array fold_right

1 files changed, 21 insertions, 0 deletions

diff --git a/test/gleam/javascript/array_test.gleam b/test/gleam/javascript/array_test.gleam
index 5bf52db..ccebcc7 100644
--- a/test/gleam/javascript/array_test.gleam
+++ b/test/gleam/javascript/array_test.gleam
@@ -16,6 +16,10 @@ pub fn length_test() {
   assert 0 =
     array.from_list([])
     |> array.length
+
+  assert 2 =
+    array.from_list([1, 2])
+    |> array.length
 }
 
 pub fn map_test() {
@@ -48,3 +52,20 @@ pub fn fold_test() {
     |> array.from_list
     |> array.fold([], fn(a, e) { [e, ..a] })
 }
+
+pub fn fold_right_test() {
+  assert [] =
+    []
+    |> array.from_list
+    |> array.fold_right([], fn(a, e) { [e, ..a] })
+
+  assert [1, 2, 3, 4] =
+    [1, 2, 3, 4]
+    |> array.from_list
+    |> array.fold_right([], fn(a, e) { [e, ..a] })
+
+  assert [4, 3, 2, 1] =
+    [4, 3, 2, 1]
+    |> array.from_list
+    |> array.fold_right([], fn(a, e) { [e, ..a] })
+}