Constant bf::test_helpers::HELLO_WORLD_SRC

pub const HELLO_WORLD_SRC: &[u8] = b"++++++[>++++++++++++<-]>.>++++++++++[>++++++++++<-]>+.+++++++..+++.>++++[>+++++++++++<-]>.<+++[>----<-]>.<<<<<+++[>+++++<-]>.>>.+++.------.--------.>>+."

Source of a “hello world” program.