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- from __future__ import annotations
- import sys
- from io import StringIO
- import mypy.api
- from mypy.test.helpers import Suite
- class APISuite(Suite):
- def setUp(self) -> None:
- self.sys_stdout = sys.stdout
- self.sys_stderr = sys.stderr
- sys.stdout = self.stdout = StringIO()
- sys.stderr = self.stderr = StringIO()
- def tearDown(self) -> None:
- sys.stdout = self.sys_stdout
- sys.stderr = self.sys_stderr
- assert self.stdout.getvalue() == ""
- assert self.stderr.getvalue() == ""
- def test_capture_bad_opt(self) -> None:
- """stderr should be captured when a bad option is passed."""
- _, stderr, _ = mypy.api.run(["--some-bad-option"])
- assert isinstance(stderr, str)
- assert stderr != ""
- def test_capture_empty(self) -> None:
- """stderr should be captured when a bad option is passed."""
- _, stderr, _ = mypy.api.run([])
- assert isinstance(stderr, str)
- assert stderr != ""
- def test_capture_help(self) -> None:
- """stdout should be captured when --help is passed."""
- stdout, _, _ = mypy.api.run(["--help"])
- assert isinstance(stdout, str)
- assert stdout != ""
- def test_capture_version(self) -> None:
- """stdout should be captured when --version is passed."""
- stdout, _, _ = mypy.api.run(["--version"])
- assert isinstance(stdout, str)
- assert stdout != ""
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