1 files changed, 144 insertions, 0 deletions
diff --git a/tests/test_language_server.py b/tests/test_language_server.py
new file mode 100644
index 0000000..5271ff5
--- /dev/null
+++ b/tests/test_language_server.py
@@ -0,0 +1,144 @@
+############################################################################
+# 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.                                           #
+############################################################################
+import pathlib
+from time import sleep
+
+import pytest
+
+from pygls import IS_PYODIDE
+from lsprotocol.types import (
+    INITIALIZE,
+    TEXT_DOCUMENT_DID_OPEN,
+    WORKSPACE_EXECUTE_COMMAND,
+)
+from lsprotocol.types import (
+    ClientCapabilities,
+    DidOpenTextDocumentParams,
+    ExecuteCommandParams,
+    InitializeParams,
+    TextDocumentItem,
+)
+from pygls.protocol import LanguageServerProtocol
+from pygls.server import LanguageServer
+from . import CMD_ASYNC, CMD_SYNC, CMD_THREAD
+
+
+def _initialize_server(server):
+    server.lsp.lsp_initialize(
+        InitializeParams(
+            process_id=1234,
+            root_uri=pathlib.Path(__file__).parent.as_uri(),
+            capabilities=ClientCapabilities(),
+        )
+    )
+
+
+def test_bf_initialize(client_server):
+    client, server = client_server
+    root_uri = pathlib.Path(__file__).parent.as_uri()
+    process_id = 1234
+
+    response = client.lsp.send_request(
+        INITIALIZE,
+        InitializeParams(
+            process_id=process_id,
+            root_uri=root_uri,
+            capabilities=ClientCapabilities(),
+        ),
+    ).result()
+
+    assert server.process_id == process_id
+    assert server.workspace.root_uri == root_uri
+    assert response.capabilities is not None
+
+
+def test_bf_text_document_did_open(client_server):
+    client, server = client_server
+
+    _initialize_server(server)
+
+    client.lsp.notify(
+        TEXT_DOCUMENT_DID_OPEN,
+        DidOpenTextDocumentParams(
+            text_document=TextDocumentItem(
+                uri=__file__, language_id="python", version=1, text="test"
+            )
+        ),
+    )
+
+    sleep(1)
+
+    assert len(server.lsp.workspace.text_documents) == 1
+
+    document = server.workspace.get_text_document(__file__)
+    assert document.uri == __file__
+    assert document.version == 1
+    assert document.source == "test"
+    assert document.language_id == "python"
+
+
+@pytest.mark.skipif(IS_PYODIDE, reason="threads are not available in pyodide.")
+def test_command_async(client_server):
+    client, server = client_server
+
+    is_called, thread_id = client.lsp.send_request(
+        WORKSPACE_EXECUTE_COMMAND, ExecuteCommandParams(command=CMD_ASYNC)
+    ).result()
+
+    assert is_called
+    assert thread_id == server.thread_id
+
+
+@pytest.mark.skipif(IS_PYODIDE, reason="threads are not available in pyodide.")
+def test_command_sync(client_server):
+    client, server = client_server
+
+    is_called, thread_id = client.lsp.send_request(
+        WORKSPACE_EXECUTE_COMMAND, ExecuteCommandParams(command=CMD_SYNC)
+    ).result()
+
+    assert is_called
+    assert thread_id == server.thread_id
+
+
+@pytest.mark.skipif(IS_PYODIDE, reason="threads are not available in pyodide.")
+def test_command_thread(client_server):
+    client, server = client_server
+
+    is_called, thread_id = client.lsp.send_request(
+        WORKSPACE_EXECUTE_COMMAND, ExecuteCommandParams(command=CMD_THREAD)
+    ).result()
+
+    assert is_called
+    assert thread_id != server.thread_id
+
+
+def test_allow_custom_protocol_derived_from_lsp():
+    class CustomProtocol(LanguageServerProtocol):
+        pass
+
+    server = LanguageServer("pygls-test", "v1", protocol_cls=CustomProtocol)
+
+    assert isinstance(server.lsp, CustomProtocol)
+
+
+def test_forbid_custom_protocol_not_derived_from_lsp():
+    class CustomProtocol:
+        pass
+
+    with pytest.raises(TypeError):
+        LanguageServer("pygls-test", "v1", protocol_cls=CustomProtocol)