I'm still using these to periodically reassure myself about the state of lines2 and its descendants.
26V2B2QH4WGLYKQULOIDIQ3K3OU22X4RUIQZVFSZEYCMJDLUYTGQC
656FM555BRGLHJ7PTIZXD2IY5T7PGFEYSHG2T3Z7WNX6QZ5KROSAC
LXTTOB33N2HCUZFIUDRQGGBVHK2HODRG4NBLH6RXRQZDCHF27BSAC
ORRSP7FVCHI2TF5GXBRGQYYJAA3JFYXZBM3T663BKSBV22FCZVCAC
H3ECRBXFBASVUPMZYM5APUK6AR3UF2O6I7BF7KQPV3YHBNT6YZWQC
SGMA5JLEDZ6KXLU7VBC3OSK4BSEZEPXUUERYWGAYB6ZCD2537I2AC
KKMFQDR43ZWVCDRHQLWWX3FCWCFA3ZSXYOBRJNPHUQZR2XPKWULAC
-- cursor doesn't move
check_eq(Editor_state.cursor1.line, 1, 'cursor')
-- cursor goes to bottom
check_eq(Editor_state.cursor1.line, 1, 'cursor:line')
check_eq(Editor_state.cursor1.pos, 4, 'cursor:pos')