RDBC-1040 Add JavaScriptArray.remove_all(predicate) method

ravendb/documents/session/misc.py

@@ -253,6 +253,11 @@ def remove_at(self, index: int) -> JavaScriptArray:
 
         return self
 
+    def remove_all(self, predicate_js: str) -> "JavaScriptArray":
+        path = self.__path_to_array
+        self.__script_lines.append(f"this.{path} = this.{path}.filter(function(item){{ return !({predicate_js}); }});")
+        return self
+
 
 class JavaScriptMap(Generic[_T_Key, _T_Value]):
     def __init__(self, suffix: int, path_to_map: str):

ravendb/tests/issue_tests/test_RDBC_1040.py

@@ -0,0 +1,90 @@
+"""
+RDBC-1040: JavaScriptArray.remove_all(predicate_js) emits correct JS filter.
+
+C# reference: JavaScriptArray<T>.RemoveAll(Func<T,bool>)
+"""
+
+import unittest
+
+from ravendb.documents.session.misc import JavaScriptArray
+from ravendb.tests.test_base import TestBase
+
+
+class TestJavaScriptArrayRemoveAllUnit(unittest.TestCase):
+    """Unit tests — no server required."""
+
+    def test_remove_all_generates_correct_js(self):
+        arr = JavaScriptArray(0, "items")
+        arr.remove_all("item > 5")
+        script = arr.script
+        self.assertIn("filter", script)
+        self.assertIn("item > 5", script)
+
+    def test_remove_all_uses_filter_assignment(self):
+        arr = JavaScriptArray(0, "values")
+        arr.remove_all("item === 'bad'")
+        script = arr.script
+        self.assertIn("this.values =", script)
+        self.assertIn(".filter(", script)
+
+    def test_remove_all_negates_predicate(self):
+        arr = JavaScriptArray(0, "tags")
+        arr.remove_all("item === 'x'")
+        script = arr.script
+        # The predicate should be negated with !()
+        self.assertIn("!(", script)
+
+    def test_remove_all_chaining_with_add(self):
+        # C# uses expression trees so the compiler catches a broken add() at compile time.
+        # In Python there is no equivalent static check, so both halves of the chain must
+        # be asserted explicitly here.
+        arr = JavaScriptArray(1, "tags")
+        arr.add("new_tag").remove_all("item === 'old_tag'")
+        script = arr.script
+        self.assertIn("push", script)
+        self.assertIn("filter", script)
+
+    def test_remove_all_returns_self_for_chaining(self):
+        arr = JavaScriptArray(0, "items")
+        result = arr.remove_all("item > 0")
+        self.assertIs(arr, result)
+
+
+class TestJavaScriptArrayRemoveAllIntegration(TestBase):
+    """Integration tests — require a live server."""
+
+    def setUp(self):
+        super().setUp()
+        self.store = self.get_document_store()
+
+    def tearDown(self):
+        super().tearDown()
+        self.store.close()
+
+    def test_remove_all_via_patch_removes_matching_items(self):
+        from ravendb.documents.operations.patch import PatchOperation, PatchRequest
+
+        class DocWithList:
+            def __init__(self, items=None):
+                self.items = items or []
+
+        with self.store.open_session() as session:
+            doc = DocWithList(items=[1, 2, 3, 4, 5, 6])
+            session.store(doc, "docs/1")
+            session.save_changes()
+
+        patch_request = PatchRequest()
+        arr = JavaScriptArray(0, "items")
+        arr.remove_all("item > 3")
+        patch_request.script = arr.script
+        patch_request.values = {}
+
+        self.store.operations.send(PatchOperation("docs/1", None, patch_request))
+
+        with self.store.open_session() as session:
+            loaded = session.load("docs/1", DocWithList)
+            self.assertEqual([1, 2, 3], sorted(loaded.items))
+
+
+if __name__ == "__main__":
+    unittest.main()