Fixed diagnostics files uri handling, added low-level tests

test/solidlsp/rust/test_rust_basic.py

@@ -90,7 +90,7 @@ class TestRustLanguageServer:
         all_symbols = request_all_symbols(language_server)
         malformed_symbols = []
         for s in all_symbols:
-            if has_malformed_name(s):
+            if has_malformed_name(s, whitespace_allowed=True):
                 malformed_symbols.append(s)
         if malformed_symbols:
             pytest.fail(