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lit.cfg
import lit

preamble_commands = [
    'echo "THIS WAS"',
    'echo "INJECTED"'
]

config.name = 'shtest-inject'
config.suffixes = ['.txt']
config.test_format = lit.formats.ShTest(preamble_commands=preamble_commands)
config.test_source_root = None
config.test_exec_root = None