test: add unit test that specifically checks the workspace_init exception handling mechanism

Author: gnikit

test/test_server_init.py

@@ -0,0 +1,32 @@
+import os
+import tempfile
+
+import pytest
+from setup_tests import Path, run_request, write_rpc_request
+
+from fortls.constants import Severity
+
+
+@pytest.fixture()
+def setup_tmp_file():
+    levels = 2000
+    fd, filename = tempfile.mkstemp(suffix=".f90")
+    try:
+        with os.fdopen(fd, "w") as tmp:
+            tmp.write(
+                "program nested_if\n"
+                + str("if (.true.) then\n" * levels)
+                + str("end if\n" * levels)
+                + "end program nested_if"
+            )
+        yield filename
+    finally:
+        os.remove(filename)
+
+
+def test_recursion_error_handling(setup_tmp_file):
+    root = Path(setup_tmp_file).parent
+    request_string = write_rpc_request(1, "initialize", {"rootPath": str(root)})
+    errcode, results = run_request(request_string)
+    assert errcode == 0
+    assert results[0]["type"] == Severity.error