From dd7dd9b1df1c77a62c49ca6e2620f6757b5b0734 Mon Sep 17 00:00:00 2001
From: RJ Dellecese <rjdellecese@gmail.com>
Date: Wed, 18 Dec 2019 22:04:16 -0500
Subject: Add dynamic.element for decoding tuples

---
 test/gleam/dynamic_test.gleam | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'test')

diff --git a/test/gleam/dynamic_test.gleam b/test/gleam/dynamic_test.gleam
index f840ce8..96db8c1 100644
--- a/test/gleam/dynamic_test.gleam
+++ b/test/gleam/dynamic_test.gleam
@@ -221,3 +221,40 @@ pub fn field_test() {
   |> dynamic.field(_, [])
   |> expect.is_error
 }
+
+pub fn element_test() {
+  let Ok(ok_atom) = atom.from_string("ok")
+  let Ok(error_atom) = atom.from_string("ok")
+  let ok_one_struct = struct(ok_atom, 1)
+
+  ok_one_struct
+  |> dynamic.from
+  |> dynamic.element(_, 0)
+  |> expect.equal(_, Ok(dynamic.from(ok_atom)))
+
+  ok_one_struct
+  |> dynamic.from
+  |> dynamic.element(_, 1)
+  |> expect.equal(_, Ok(dynamic.from(1)))
+
+  ok_one_struct
+  |> dynamic.from
+  |> dynamic.element(_, 2)
+  |> expect.is_error
+
+  ok_one_struct
+  |> dynamic.from
+  |> dynamic.element(_, -1)
+  |> expect.is_error
+
+  1
+  |> dynamic.from
+  |> dynamic.element(_, 0)
+  |> expect.is_error
+
+  map.new()
+  |> map.insert(_, 1, ok_atom)
+  |> dynamic.from
+  |> dynamic.element(_, 0)
+  |> expect.is_error
+}
-- 
cgit v1.2.3