Added icon to mig

tests/unit/filter_plugins/test_merge_with_defaults.py

@@ -0,0 +1,107 @@
+import unittest
+import sys
+import os
+
+# Allow import from project filter_plugins directory
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../../../filter_plugins')))
+
+from merge_with_defaults import merge_with_defaults
+
+class TestMergeWithDefaultsFilter(unittest.TestCase):
+
+    def test_basic_merge(self):
+        defaults = {
+            "app1": {
+                "docker": {
+                    "network": "default",
+                    "services": {"foo": "bar"},
+                    "volumes": {"data": "/mnt"}
+                },
+                "features": {"ldap": True, "sso": False},
+                "version": 1
+            }
+        }
+
+        customs = {
+            "app1": {
+                "docker": {
+                    "network": "customnet"
+                },
+                "version": 2
+            },
+            "app2": {
+                "docker": {
+                    "network": "other"
+                }
+            }
+        }
+
+        expected = {
+            "app1": {
+                "docker": {
+                    "network": "customnet",
+                    "services": {"foo": "bar"},
+                    "volumes": {"data": "/mnt"}
+                },
+                "features": {"ldap": True, "sso": False},
+                "version": 2
+            },
+            "app2": {
+                "docker": {
+                    "network": "other"
+                }
+            }
+        }
+
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+    def test_keys_from_defaults_only(self):
+        defaults = {
+            "foo": {"docker": {"a": 1, "b": 2}, "features": {"x": True}},
+        }
+        customs = {
+            "foo": {},
+        }
+        expected = {
+            "foo": {"docker": {"a": 1, "b": 2}, "features": {"x": True}}
+        }
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+    def test_custom_overrides_nested_dict(self):
+        defaults = {"x": {"docker": {"bar": 1, "baz": 2}}}
+        customs  = {"x": {"docker": {"bar": 99}}}
+        expected = {"x": {"docker": {"bar": 99, "baz": 2}}}
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+    def test_only_defaults_present(self):
+        defaults = {"only": {"value": 1}}
+        customs  = {}
+        expected = {"only": {"value": 1}}
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+    def test_only_customs_present(self):
+        defaults = {}
+        customs  = {"x": {"foo": 42}}
+        expected = {"x": {"foo": 42}}
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+    def test_deep_merge_multiple_levels(self):
+        defaults = {
+            "a": {"outer": {"mid": {"inner": 1, "keep": True}}, "plain": "test"}
+        }
+        customs = {
+            "a": {"outer": {"mid": {"inner": 99}}, "plain": "changed"}
+        }
+        expected = {
+            "a": {"outer": {"mid": {"inner": 99, "keep": True}}, "plain": "changed"}
+        }
+        result = merge_with_defaults(defaults, customs)
+        self.assertEqual(result, expected)
+
+if __name__ == "__main__":
+    unittest.main()