From ca5dc31ec1c798a1b337c8da78347f73f72b0c4d Mon Sep 17 00:00:00 2001
From: John Pennycook <john.pennycook@intel.com>
Date: Fri, 11 Oct 2024 09:26:14 +0100
Subject: [PATCH] Add regression test for symlink handling

Signed-off-by: John Pennycook <john.pennycook@intel.com>
---
 tests/duplicates/cpu2               |  1 +
 tests/duplicates/test_duplicates.py | 34 +++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 120000 tests/duplicates/cpu2

diff --git a/tests/duplicates/cpu2 b/tests/duplicates/cpu2
new file mode 120000
index 0000000..840a958
--- /dev/null
+++ b/tests/duplicates/cpu2
@@ -0,0 +1 @@
+cpu/
\ No newline at end of file
diff --git a/tests/duplicates/test_duplicates.py b/tests/duplicates/test_duplicates.py
index 459f29e..ee5a940 100644
--- a/tests/duplicates/test_duplicates.py
+++ b/tests/duplicates/test_duplicates.py
@@ -52,6 +52,40 @@ def test_duplicates(self):
         setmap = mapper.walk(state)
         self.assertDictEqual(setmap, expected_setmap, "Mismatch in setmap")
 
+    def test_symlinks(self):
+        """Check that symlinks do not count towards divergence."""
+
+        cpufile = str(self.rootdir / "cpu/foo.cpp")
+        cpu2file = str(self.rootdir / "cpu2/foo.cpp")
+
+        codebase = CodeBase(self.rootdir, exclude_patterns=["gpu/"])
+
+        configuration = {
+            "cpu": [
+                {
+                    "file": cpufile,
+                    "defines": [],
+                    "include_paths": [],
+                    "include_files": [],
+                },
+            ],
+            "cpu2": [
+                {
+                    "file": cpu2file,
+                    "defines": [],
+                    "include_paths": [],
+                    "include_files": [],
+                },
+            ],
+        }
+
+        expected_setmap = {frozenset(["cpu", "cpu2"]): 1}
+
+        state = finder.find(self.rootdir, codebase, configuration)
+        mapper = PlatformMapper(codebase)
+        setmap = mapper.walk(state)
+        self.assertDictEqual(setmap, expected_setmap, "Mismatch in setmap")
+
 
 if __name__ == "__main__":
     unittest.main()