1 files changed, 48 insertions, 0 deletions
diff --git a/tests/lsp/test_completion.py b/tests/lsp/test_completion.py
new file mode 100644
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+++ b/tests/lsp/test_completion.py
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+############################################################################
+# 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 Tuple
+
+from lsprotocol import types
+
+
+from ..client import LanguageClient
+
+
+async def test_completion(
+    json_server_client: Tuple[LanguageClient, types.InitializeResult],
+    uri_for,
+):
+    """Ensure that the completion methods are working as expected."""
+    client, initialize_result = json_server_client
+
+    completion_provider = initialize_result.capabilities.completion_provider
+    assert completion_provider
+    assert completion_provider.trigger_characters == [","]
+    assert completion_provider.all_commit_characters == [":"]
+
+    test_uri = uri_for("example.json")
+    assert test_uri is not None
+
+    response = await client.text_document_completion_async(
+        types.CompletionParams(
+            text_document=types.TextDocumentIdentifier(uri=test_uri),
+            position=types.Position(line=0, character=0),
+        )
+    )
+
+    labels = {i.label for i in response.items}
+    assert labels == set(['"', "[", "]", "{", "}"])