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from __future__ import annotations
import pytest
from pre_commit.errors import FatalError
from pre_commit.languages import haskell
from pre_commit.util import win_exe
from testing.language_helpers import run_language
def test_run_example_executable(tmp_path):
example_cabal = '''\
cabal-version: 2.4
name: example
version: 0.1.0.0
executable example
main-is: Main.hs
build-depends: base >=4
default-language: Haskell2010
'''
main_hs = '''\
module Main where
main :: IO ()
main = putStrLn "Hello, Haskell!"
'''
tmp_path.joinpath('example.cabal').write_text(example_cabal)
tmp_path.joinpath('Main.hs').write_text(main_hs)
result = run_language(tmp_path, haskell, 'example')
assert result == (0, b'Hello, Haskell!\n')
# should not symlink things into environments
exe = tmp_path.joinpath(win_exe('hs_env-default/bin/example'))
assert exe.is_file()
assert not exe.is_symlink()
def test_run_dep(tmp_path):
result = run_language(tmp_path, haskell, 'hello', deps=['hello'])
assert result == (0, b'Hello, World!\n')
def test_run_empty(tmp_path):
with pytest.raises(FatalError) as excinfo:
run_language(tmp_path, haskell, 'example')
msg, = excinfo.value.args
assert msg == 'Expected .cabal files or additional_dependencies'
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