1 files changed, 164 insertions, 0 deletions
diff --git a/test/list_test.gleam b/test/list_test.gleam
new file mode 100644
index 0000000..c0a16ae
--- /dev/null
+++ b/test/list_test.gleam
@@ -0,0 +1,164 @@
+import expect
+import list
+
+pub fn length_test() {
+  list:length([]) |> expect:equal(_, 0)
+  list:length([1]) |> expect:equal(_, 1)
+  list:length([1, 1]) |> expect:equal(_, 2)
+  list:length([1, 1, 1]) |> expect:equal(_, 3)
+}
+
+pub fn reverse_test() {
+  list:reverse([]) |> expect:equal(_, [])
+  list:reverse([1, 2, 3, 4, 5]) |> expect:equal(_, [5, 4, 3, 2, 1])
+}
+
+pub fn is_empty_test() {
+  list:is_empty([]) |> expect:true
+  list:is_empty([1]) |> expect:false
+}
+
+pub fn contains_test() {
+  list:contains([0, 4, 5, 1], 1) |> expect:true
+  list:contains([0, 4, 5, 7], 1) |> expect:false
+  list:contains([], 1) |> expect:false
+}
+
+pub fn head_test() {
+  list:head([0, 4, 5, 7])
+    |> expect:equal(_, Ok(0))
+
+  list:head([])
+    |> expect:is_error
+}
+
+pub fn tail_test() {
+  list:tail([0, 4, 5, 7])
+    |> expect:equal(_, Ok([4, 5, 7]))
+
+  list:tail([0])
+    |> expect:equal(_, Ok([]))
+
+  list:tail([])
+    |> expect:is_error
+}
+
+pub fn filter_test() {
+  []
+    |> list:filter(_, fn(_) { True })
+    |> expect:equal(_, [])
+
+  [0, 4, 5, 7, 3]
+    |> list:filter(_, fn(_) { True })
+    |> expect:equal(_, [0, 4, 5, 7, 3])
+
+  [0, 4, 5, 7, 3]
+    |> list:filter(_, fn(x) { x > 4 })
+    |> expect:equal(_, [5, 7])
+
+  [0, 4, 5, 7, 3]
+    |> list:filter(_, fn(x) { x < 4 })
+    |> expect:equal(_, [0, 3])
+}
+
+pub fn map_test() {
+  []
+    |> list:map(_, fn(x) { x * 2 })
+    |> expect:equal(_, [])
+
+  [0, 4, 5, 7, 3]
+    |> list:map(_, fn(x) { x * 2 })
+    |> expect:equal(_, [0, 8, 10, 14, 6])
+}
+
+pub fn traverse_test() {
+  let fun = fn(x) {
+    case x == 6 || x == 5 || x == 4 {
+    | True -> Ok(x * 2)
+    | False -> Error(x)
+    }
+  }
+
+  [5, 6, 5, 6]
+    |> list:traverse(_, fun)
+    |> expect:equal(_, Ok([10, 12, 10, 12]))
+
+  [4, 6, 5, 7, 3]
+    |> list:traverse(_, fun)
+    |> expect:equal(_, Error(7))
+}
+
+pub fn drop_test() {
+  []
+    |> list:drop(_, 5)
+    |> expect:equal(_, [])
+
+  [1, 2, 3, 4, 5, 6, 7, 8]
+    |> list:drop(_, 5)
+    |> expect:equal(_, [6, 7, 8])
+}
+
+pub fn take_test() {
+  []
+    |> list:take(_, 5)
+    |> expect:equal(_, [])
+  [1, 2, 3, 4, 5, 6, 7, 8]
+    |> list:take(_, 5)
+    |> expect:equal(_, [1, 2, 3, 4, 5])
+}
+
+pub fn new_test() {
+  list:new() |> expect:equal(_, [])
+}
+
+pub fn append_test() {
+  list:append([1], [2, 3])
+    |> expect:equal(_, [1, 2, 3])
+}
+
+pub fn flatten_test() {
+  list:flatten([])
+    |> expect:equal(_, [])
+
+  list:flatten([[]])
+    |> expect:equal(_, [])
+
+  list:flatten([[], [], []])
+    |> expect:equal(_, [])
+
+  list:flatten([[1, 2], [], [3, 4]])
+    |> expect:equal(_, [1, 2, 3, 4])
+}
+
+pub fn fold_test() {
+  [1, 2, 3]
+    |> list:fold(_, [], fn(x, acc) { [x | acc] })
+    |> expect:equal(_, [3, 2, 1])
+}
+
+pub fn fold_right_test() {
+  [1, 2, 3]
+    |> list:fold_right(_, [], fn(x, acc) { [x | acc] })
+    |> expect:equal(_, [1, 2, 3])
+}
+
+pub fn find_test() {
+  let f = fn(x) {
+    case x {
+    | 2 -> Ok(4)
+    | _ -> Error(0)
+    }
+  }
+
+  [1, 2, 3]
+  |> list:find(_, f)
+  |> expect:equal(_, Ok(4))
+
+  [1, 3, 2]
+  |> list:find(_, f)
+  |> expect:equal(_, Ok(4))
+
+  [1, 3]
+  |> list:find(_, f)
+  |> expect:is_error
+}