feat: Add Dart language support to TestRepoMapAllLanguages

tests/basic/test_repomap.py

@@ -288,6 +288,7 @@ class TestRepoMapAllLanguages(unittest.TestCase):
             "c": ("c", "main"),
             "cpp": ("cpp", "main"),
             "d": ("d", "main"),
+            "dart": ("dart", "Person"),
             "elixir": ("ex", "Greeter"),
             "java": ("java", "Greeting"),
             "javascript": ("js", "Person"),

tests/fixtures/languages/dart/test.dart

@@ -0,0 +1,21 @@
+// A simple Dart class for testing ctags detection
+class Person {
+  String name;
+  int age;
+
+  Person(this.name, this.age);
+
+  void greet() {
+    print('Hello, my name is $name and I am $age years old.');
+  }
+
+  bool isAdult() {
+    return age >= 18;
+  }
+}
+
+void main() {
+  var person = Person('John', 30);
+  person.greet();
+  print('Is adult: ${person.isAdult()}');
+}