parseMetadata IndexError on blank line inside metadata block

[chirag127]

Problem

parseMetadata() in tests/database-tests.py crashes with IndexError: string index out of range when a metadata block contains a blank line.

Steps

1. Create a lyrics file with a blank line inside the metadata section (after the ___ separator).
2. Run cd tests && make (or python3 database-tests.py).

Expected

Test suite parses metadata cleanly or reports a warning.

Actual

IndexError: string index out of range

at tests/database-tests.py:62:

if line[0] == ' ':

line can be empty after line.rstrip() on line 61; line[0] then raises.

Fix

Guard with if line and line[0] == ' ': or continue on empty lines.

Env

Python 3.x, any OS. File unchanged since introduction.

Thanks for maintaining Lyrics/lyrics-database!