1 files changed, 50 insertions, 0 deletions
diff --git a/test/std/string_test.gleam b/test/std/string_test.gleam
new file mode 100644
index 0000000..dd8a00e
--- /dev/null
+++ b/test/std/string_test.gleam
@@ -0,0 +1,50 @@
+import std/string
+import std/expect
+
+pub fn length_test() {
+  string:length("ß↑e̊")
+  |> expect:equal(_, 3)
+
+  string:length("Gleam")
+  |> expect:equal(_, 5)
+
+  string:length("")
+  |> expect:equal(_, 0)
+}
+
+pub fn lowercase_test() {
+  string:lowercase("Gleam")
+  |> expect:equal(_, "gleam")
+}
+
+pub fn uppercase_test() {
+  string:uppercase("Gleam")
+  |> expect:equal(_, "GLEAM")
+}
+
+pub fn reverse_test() {
+  string:reverse("Gleam")
+  |> expect:equal(_, "maelG")
+}
+
+pub fn split_test() {
+  "Gleam,Erlang,Elixir"
+  |> string:split(_, ",")
+  |> expect:equal(_, ["Gleam", "Erlang", "Elixir"])
+
+  "Gleam, Erlang,Elixir"
+  |> string:split(_, ", ")
+  |> expect:equal(_, ["Gleam", "Erlang,Elixir"])
+}
+
+pub fn replace_test() {
+  "Gleam,Erlang,Elixir"
+  |> string:replace(_, ",", "++")
+  |> expect:equal(_, "Gleam++Erlang++Elixir")
+}
+
+pub fn append_test() {
+  "Test"
+  |> string:append(_, " Me")
+  |> expect:equal(_, "Test Me")
+}