feat: Add Gleam language support to TestRepoMapAllLanguages

tests/basic/test_repomap.py

@@ -290,6 +290,7 @@ class TestRepoMapAllLanguages(unittest.TestCase):
             "d": ("d", "main"),
             "dart": ("dart", "Person"),
             "elixir": ("ex", "Greeter"),
+            "gleam": ("gleam", "greet"),
             "java": ("java", "Greeting"),
             "javascript": ("js", "Person"),
             "kotlin": ("kt", "Greeting"),

tests/fixtures/languages/gleam/test.gleam

@@ -0,0 +1,10 @@
+import gleam/io
+
+pub fn greet(name: String) -> String {
+  "Hello, " <> name <> "!"
+}
+
+pub fn main() {
+  greet("World")
+  |> io.println
+}