tests

2 files changed, 38 insertions, 0 deletions

diff --git a/src/gleam/string.gleam b/src/gleam/string.gleam
index 5369b32..e2377e2 100644
--- a/src/gleam/string.gleam
+++ b/src/gleam/string.gleam
@@ -900,6 +900,27 @@ pub fn utf_codepoint(value: Int) -> Result(UtfCodepoint, Nil) {
   }
 }
 
+/// Converts a string to a list of UtfCodepoint integers.
+///
+/// ## Examples
+///
+/// ```gleam
+/// > "abc"
+/// > |> string.to_ints
+/// [97, 98, 99]
+/// ```
+///
+/// ```gleam
+/// > "🐍"
+/// > |> string.to_ints
+/// [128013]
+/// ```
+///
+/// ```gleam
+/// > [utf_codepoint(128013)] |> from_utf_codepoints |> to_ints
+/// "🐍"
+/// ```
+///
 pub fn to_ints(s: String) -> List(Int) {
   to_utf_codepoints(s)
   |> list.map(utf_codepoint_to_int)
diff --git a/test/gleam/string_test.gleam b/test/gleam/string_test.gleam
index 37671d3..5aad968 100644
--- a/test/gleam/string_test.gleam
+++ b/test/gleam/string_test.gleam
@@ -511,6 +511,10 @@ pub fn bit_string_utf_codepoint_test() {
 }
 
 pub fn to_ints_test() {
+  ""
+  |> string.to_ints
+  |> should.equal([])
+
   "abc"
   |> string.to_ints
   |> should.equal([97, 98, 99])
@@ -518,6 +522,19 @@ pub fn to_ints_test() {
   "🐍"
   |> string.to_ints
   |> should.equal([128013])
+
+  {
+    assert Ok(cp) = string.utf_codepoint(128013)
+    [cp]
+  }
+  |> string.from_utf_codepoints
+  |> string.to_ints
+  |> should.equal([128013])
+
+  string.to_utf_codepoints("🐍")
+  |> string.from_utf_codepoints
+  |> string.to_ints
+  "🐍"
 }
 
 pub fn to_option_test() {