test_installer_with_pypi_repository assert 1 == 0

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[True-exception0-get_requires_for_build] assert False + where False = <built-in method startswith of str object at 0x0000012BC2CCA080>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x0000012BC2CCA080> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[True-exception1-build] assert False + where False = <built-in method startswith of str object at 0x0000012BC0C78740>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x0000012BC0C78740> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n'.startswith

test_executor_should_write_pep610_url_references_for_non_wheel_files assert 0 == 1 + where 0 = len([])

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[False-exception0-build] assert False + where False = <built-in method startswith of str object at 0x0000012BC0C76820>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x0000012BC0C76820> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess_encoding[None-utf-8] assert ((None or 'Errör on stdout')) in '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n' + where '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-sy

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[False-exception1-get_requires_for_build] assert False + where False = <built-in method startswith of str object at 0x0000012BC0EBFCF0>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x0000012BC0EBFCF0> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[True-exception1-get_requires_for_build] assert False + where False = <built-in method startswith of str object at 0x0000012BC0EC2BA0>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x0000012BC0EC2BA0> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess_encoding[Err\xf6r on stderr-utf-8] assert (('Errör on stderr')) in '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install build-system.requires for simple-project.\n\n' + where '\nPackage operations: 1 install, 0 updates, 0 removals\n\n • Installing simple-project (1.2.3 D:/a/poetry/poetry/ä/tests/fixtures/simple_project)\n\n ChefInstallError\n\n Failed to install poetry-core>=1.1.0a7.\n \n Output:\n Updating dependencies\n Resolving dependencies...\n \n Package operations: 1 install, 0 updates, 0 removals\n \n • Installing poetry-core (1.5.0)\n \n StopIteration\n \n 0\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:353 in raw_decode\n 349│ have extraneous data at the end.\n 350│ \n 351│ """\n 352│ try:\n → 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n The following error occurred when trying to handle this error:\n \n \n JSONDecodeError\n \n Expecting value: line 1 column 1 (char 0)\n \n at C:\\hostedtoolcache\\windows\\Python\\3.8.10\\x64\\lib\\json\\decoder.py:355 in raw_decode\n 351│ """\n 352│ try:\n 353│ obj, end = self.scan_once(s, idx)\n 354│ except StopIteration as err:\n → 355│ raise JSONDecodeError("Expecting value", s, err.value) from None\n 356│ return obj, end\n 357│ \n \n Cannot install poetry-core.\n \n \n \n Error:\n \n\n at src\\poetry\\installation\\chef.py:102 in install\n 98│ InstalledRepository.load(self._env),\n 99│ )\n 100│ installer.update(True)\n 101│ if installer.run() != 0:\n → 102│ raise ChefInstallError(requirements, io.fetch_output(), io.fetch_error())\n 103│ \n 104│ \n 105│ class Chef:\n 106│ def __init__(\n\nCannot install bu