Closes #6

tests/README.md

@@ -43,6 +43,9 @@ following the decoder instructions above, then run `./dbc_parser_test`.
 Parser tests cover standard and extended CAN IDs, whitespace, payload storage
 boundaries, missing fields, malformed and overflowing numbers, reserved ID bits,
 error paths and line numbers, and integration with signals and comments.
+Signal tests cover complete syntax and numeric validation, scientific notation,
+finite physical parameters and ordered ranges, spaces and tabs, receiver lists,
+unsupported multiplexing, and Intel/Motorola declared-payload boundaries.
 Temporary DBC fixtures are created in the system temporary directory and removed
 automatically.