Test: Added test cases for Delete Documents HTTP API (#6175)

### What problem does this PR solve?

cover [delete
documents](https://ragflow.io/docs/dev/http_api_reference#delete-documents)
endpoints

### Type of change

- [x] add test cases

sdk/python/test/test_http_api/common.py

@@ -150,3 +150,9 @@ def update_documnet(auth, dataset_id, document_id, payload):
     url = f"{HOST_ADDRESS}{FILE_API_URL}/{document_id}".format(dataset_id=dataset_id)
     res = requests.put(url=url, headers=HEADERS, auth=auth, json=payload)
     return res.json()
+
+
+def delete_documnet(auth, dataset_id, payload=None):
+    url = f"{HOST_ADDRESS}{FILE_API_URL}".format(dataset_id=dataset_id)
+    res = requests.delete(url=url, headers=HEADERS, auth=auth, json=payload)
+    return res.json()

sdk/python/test/test_http_api/test_file_management_within_dataset/test_delete_documents.py

@@ -0,0 +1,183 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+from concurrent.futures import ThreadPoolExecutor
+
+import pytest
+from common import (
+    INVALID_API_TOKEN,
+    batch_upload_documents,
+    create_datasets,
+    delete_documnet,
+    list_documnet,
+)
+from libs.auth import RAGFlowHttpApiAuth
+
+
+class TestAuthorization:
+    @pytest.mark.parametrize(
+        "auth, expected_code, expected_message",
+        [
+            (None, 0, "`Authorization` can't be empty"),
+            (
+                RAGFlowHttpApiAuth(INVALID_API_TOKEN),
+                109,
+                "Authentication error: API key is invalid!",
+            ),
+        ],
+    )
+    def test_invalid_auth(
+        self, get_http_api_auth, tmp_path, auth, expected_code, expected_message
+    ):
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(get_http_api_auth, ids[0], 1, tmp_path)
+        res = delete_documnet(auth, ids[0], {"ids": document_ids[0]})
+        assert res["code"] == expected_code
+        assert res["message"] == expected_message
+
+
+class TestDocumentDeletion:
+    @pytest.mark.parametrize(
+        "payload, expected_code, expected_message, remaining",
+        [
+            (None, 0, "", 0),
+            ({"ids": []}, 0, "", 0),
+            ({"ids": ["invalid_id"]}, 102, "Document not found!", 3),
+            (
+                {"ids": ["\n!?。；！？\"'"]},
+                102,
+                "Document not found!",
+                3,
+            ),
+            (
+                "not json",
+                100,
+                "AttributeError(\"'str' object has no attribute 'get'\")",
+                3,
+            ),
+            (lambda r: {"ids": r[:1]}, 0, "", 2),
+            (lambda r: {"ids": r}, 0, "", 0),
+        ],
+    )
+    def test_basic_scenarios(
+        self,
+        get_http_api_auth,
+        tmp_path,
+        payload,
+        expected_code,
+        expected_message,
+        remaining,
+    ):
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(get_http_api_auth, ids[0], 3, tmp_path)
+        if callable(payload):
+            payload = payload(document_ids)
+        res = delete_documnet(get_http_api_auth, ids[0], payload)
+        assert res["code"] == expected_code
+        if res["code"] != 0:
+            assert res["message"] == expected_message
+
+        res = list_documnet(get_http_api_auth, ids[0])
+        assert len(res["data"]["docs"]) == remaining
+        assert res["data"]["total"] == remaining
+
+    @pytest.mark.parametrize(
+        "dataset_id, expected_code, expected_message",
+        [
+            ("", 100, "<MethodNotAllowed '405: Method Not Allowed'>"),
+            (
+                "invalid_dataset_id",
+                102,
+                "You don't own the dataset invalid_dataset_id. ",
+            ),
+        ],
+    )
+    def test_invalid_dataset_id(
+        self, get_http_api_auth, tmp_path, dataset_id, expected_code, expected_message
+    ):
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(get_http_api_auth, ids[0], 3, tmp_path)
+        res = delete_documnet(get_http_api_auth, dataset_id, {"ids": document_ids[:1]})
+        assert res["code"] == expected_code
+        assert res["message"] == expected_message
+
+    @pytest.mark.xfail(reason="issues/6174")
+    @pytest.mark.parametrize(
+        "payload",
+        [
+            lambda r: {"ids": ["invalid_id"] + r},
+            lambda r: {"ids": r[:1] + ["invalid_id"] + r[1:3]},
+            lambda r: {"ids": r + ["invalid_id"]},
+        ],
+    )
+    def test_delete_partial_invalid_id(self, get_http_api_auth, tmp_path, payload):
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(get_http_api_auth, ids[0], 3, tmp_path)
+        if callable(payload):
+            payload = payload(document_ids)
+        res = delete_documnet(get_http_api_auth, ids[0], payload)
+        assert res["code"] == 0
+        assert res["data"]["errors"][0] == "You don't own the dataset invalid_id"
+        assert res["data"]["success_count"] == 3
+
+        res = list_documnet(get_http_api_auth, ids[0])
+        assert len(res["data"]["docs"]) == 0
+        assert res["data"]["total"] == 0
+
+    def test_repeated_deletion(self, get_http_api_auth, tmp_path):
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(get_http_api_auth, ids[0], 1, tmp_path)
+        res = delete_documnet(get_http_api_auth, ids[0], {"ids": document_ids})
+        assert res["code"] == 0
+
+        res = delete_documnet(get_http_api_auth, ids[0], {"ids": document_ids})
+        assert res["code"] == 102
+        assert res["message"] == "Document not found!"
+
+    def test_concurrent_deletion(self, get_http_api_auth, tmp_path):
+        documnets_num = 100
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(
+            get_http_api_auth, ids[0], documnets_num, tmp_path
+        )
+
+        with ThreadPoolExecutor(max_workers=5) as executor:
+            futures = [
+                executor.submit(
+                    delete_documnet,
+                    get_http_api_auth,
+                    ids[0],
+                    {"ids": document_ids[i : i + 1]},
+                )
+                for i in range(documnets_num)
+            ]
+        responses = [f.result() for f in futures]
+        assert all(r["code"] == 0 for r in responses)
+
+    @pytest.mark.slow
+    def test_delete_1k(self, get_http_api_auth, tmp_path):
+        documnets_num = 1_000
+        ids = create_datasets(get_http_api_auth, 1)
+        document_ids = batch_upload_documents(
+            get_http_api_auth, ids[0], documnets_num, tmp_path
+        )
+        res = list_documnet(get_http_api_auth, ids[0])
+        assert res["data"]["total"] == documnets_num
+
+        res = delete_documnet(get_http_api_auth, ids[0], {"ids": document_ids})
+        assert res["code"] == 0
+
+        res = list_documnet(get_http_api_auth, ids[0])
+        assert res["data"]["total"] == 0