feat: Add test for --map-mul option and update RepoMap to print map_mul_no_files

aider/repomap.py

@@ -69,6 +69,9 @@ class RepoMap:
         self.map_processing_time = 0
         self.last_map = None
 
+        if self.verbose:
+            self.io.tool_output(f"RepoMap initialized with map_mul_no_files: {self.map_mul_no_files}")
+
     def token_count(self, text):
         len_text = len(text)
         if len_text < 200:

tests/basic/test_main.py

@@ -574,3 +574,14 @@ class TestMain(TestCase):
                 return_coder=False,
             )
             self.assertIsNone(result)
+
+    def test_map_mul_option(self):
+        with GitTemporaryDirectory():
+            coder = main(
+                ["--map-mul", "5", "--exit", "--yes"],
+                input=DummyInput(),
+                output=DummyOutput(),
+                return_coder=True,
+            )
+            self.assertIsInstance(coder, Coder)
+            self.assertEqual(coder.repo_map.map_mul_no_files, 5)