add encoding test

1 files changed, 23 insertions, 0 deletions

diff --git a/test/gleam/json_test.gleam b/test/gleam/json_test.gleam
index 84f0352..25228bb 100644
--- a/test/gleam/json_test.gleam
+++ b/test/gleam/json_test.gleam
@@ -1,4 +1,5 @@
 import gleam/dynamic
+import gleam/option.{None, Some}
 import gleam/result
 import gleam/json.{Json}
 import gleam/should
@@ -12,3 +13,25 @@ pub fn decode_test() {
   |> result.nil_error()
   |> should.equal(Error(Nil))
 }
+
+pub fn encode_test() {
+  json.string("hello")
+  |> json.encode()
+  |> should.equal("\"hello\"")
+
+  json.null()
+  |> json.encode()
+  |> should.equal("null")
+
+  json.object([tuple("foo", json.int(5))])
+  |> json.encode()
+  |> should.equal("{\"foo\":5}")
+
+  json.nullable(Some(5), json.int)
+  |> json.encode()
+  |> should.equal("5")
+
+  json.nullable(None, json.int)
+  |> json.encode()
+  |> should.equal("null")
+}