1 files changed, 111 insertions, 0 deletions
diff --git a/tests/lsp/test_prepare_rename.py b/tests/lsp/test_prepare_rename.py
new file mode 100644
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+++ b/tests/lsp/test_prepare_rename.py
@@ -0,0 +1,111 @@
+############################################################################
+# Copyright(c) Open Law Library. All rights reserved.                      #
+# See ThirdPartyNotices.txt in the project root for additional notices.    #
+#                                                                          #
+# 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 typing import Optional, Union
+
+from lsprotocol.types import TEXT_DOCUMENT_PREPARE_RENAME
+from lsprotocol.types import (
+    Position,
+    PrepareRenameResult,
+    PrepareRenameResult_Type1,
+    PrepareRenameParams,
+    Range,
+    TextDocumentIdentifier,
+)
+
+from ..conftest import ClientServer
+
+
+class ConfiguredLS(ClientServer):
+    def __init__(self):
+        super().__init__()
+
+        @self.server.feature(TEXT_DOCUMENT_PREPARE_RENAME)
+        def f(
+            params: PrepareRenameParams,
+        ) -> Optional[Union[Range, PrepareRenameResult]]:
+            return {  # type: ignore
+                "file://return.range": Range(
+                    start=Position(line=0, character=0),
+                    end=Position(line=1, character=1),
+                ),
+                "file://return.prepare_rename": PrepareRenameResult_Type1(
+                    range=Range(
+                        start=Position(line=0, character=0),
+                        end=Position(line=1, character=1),
+                    ),
+                    placeholder="placeholder",
+                ),
+            }.get(params.text_document.uri, None)
+
+
+@ConfiguredLS.decorate()
+def test_capabilities(client_server):
+    pass
+
+
+@ConfiguredLS.decorate()
+def test_prepare_rename_return_range(client_server):
+    client, _ = client_server
+    response = client.lsp.send_request(
+        TEXT_DOCUMENT_PREPARE_RENAME,
+        PrepareRenameParams(
+            text_document=TextDocumentIdentifier(uri="file://return.range"),
+            position=Position(line=0, character=0),
+        ),
+    ).result()
+
+    assert response
+
+    assert response.start.line == 0
+    assert response.start.character == 0
+    assert response.end.line == 1
+    assert response.end.character == 1
+
+
+@ConfiguredLS.decorate()
+def test_prepare_rename_return_prepare_rename(client_server):
+    client, _ = client_server
+    response = client.lsp.send_request(
+        TEXT_DOCUMENT_PREPARE_RENAME,
+        PrepareRenameParams(
+            text_document=TextDocumentIdentifier(uri="file://return.prepare_rename"),
+            position=Position(line=0, character=0),
+        ),
+    ).result()
+
+    assert response
+
+    assert response.range.start.line == 0
+    assert response.range.start.character == 0
+    assert response.range.end.line == 1
+    assert response.range.end.character == 1
+    assert response.placeholder == "placeholder"
+
+
+@ConfiguredLS.decorate()
+def test_prepare_rename_return_none(client_server):
+    client, _ = client_server
+    response = client.lsp.send_request(
+        TEXT_DOCUMENT_PREPARE_RENAME,
+        PrepareRenameParams(
+            text_document=TextDocumentIdentifier(uri="file://return.none"),
+            position=Position(line=0, character=0),
+        ),
+    ).result()
+
+    assert response is None