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artiq/lit-test/test/inferencer/error_with_self.py

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Python

# RUN: %python -m artiq.compiler.testbench.inferencer +diag %s >%t
# RUN: OutputCheck %s --file-to-check=%t
class contextmgr:
def __enter__(self):
pass
def __exit__(self, n1, n2, n3):
pass
def foo():
contextmgr.__enter__(1)
# CHECK-L: ${LINE:+3}: error: cannot unify <instance contextmgr> with int(width='a) while inferring the type for self argument
# CHECK-L: ${LINE:+2}: note: expression of type <instance contextmgr {}>
# CHECK-L: ${LINE:+1}: note: reference to an instance with a method '__enter__(self:int(width='a))->NoneType delay('b)'
with contextmgr():
pass