def test_emit(path, Backend):
text = open(path).read()
maybe_xfail(text)
base = os.path.splitext(path)[0]
comp = Compiler()
comp.parse(os.path.basename(path), text)
comp.compile()
backend = Backend()
comp.emit(backend)
extbase = os.path.join(base, backend.ext)
if not os.path.exists(extbase):
os.makedirs(extbase)
srcs = []
assertions = []
for name in backend.files:
path = os.path.join(extbase, name)
srcs.append(path)
computed = backend.files[name]
expected = check_file(path, computed)
assertions.append((expected, computed))
for expected, computed in assertions:
assert expected == computed
assert len(backend.files) == len(walk(extbase, ".%s" % backend.ext))
BUILDERS[backend.ext](comp, extbase, srcs)
