# Stubs for unittest

# Based on http://docs.python.org/2.7/library/unittest.html

from typing import (Any, Callable, Dict, FrozenSet, Iterable, Iterator,
                    List, NoReturn, Optional, overload, Pattern, Sequence, Set,
                    Text, TextIO, Tuple, Type, TypeVar, Union)
from abc import abstractmethod, ABCMeta
import types

_T = TypeVar('_T')
_FT = TypeVar('_FT')

_ExceptionType = Union[Type[BaseException], Tuple[Type[BaseException], ...]]
_Regexp = Union[Text, Pattern[Text]]

class Testable(metaclass=ABCMeta):
    @abstractmethod
    def run(self, result: 'TestResult') -> None: ...
    @abstractmethod
    def debug(self) -> None: ...
    @abstractmethod
    def countTestCases(self) -> int: ...

# TODO ABC for test runners?

class TestResult:
    errors = ...  # type: List[Tuple[Testable, str]]
    failures = ...  # type: List[Tuple[Testable, str]]
    skipped = ...  # type: List[Tuple[Testable, str]]
    expectedFailures = ...  # type: List[Tuple[Testable, str]]
    unexpectedSuccesses = ...  # type: List[Testable]
    shouldStop = ...  # type: bool
    testsRun = ...  # type: int
    buffer = ...  # type: bool
    failfast = ...  # type: bool

    def wasSuccessful(self) -> bool: ...
    def stop(self) -> None: ...
    def startTest(self, test: Testable) -> None: ...
    def stopTest(self, test: Testable) -> None: ...
    def startTestRun(self) -> None: ...
    def stopTestRun(self) -> None: ...
    def addError(self, test: Testable,
                  err: Tuple[type, Any, Any]) -> None: ...  # TODO
    def addFailure(self, test: Testable,
                    err: Tuple[type, Any, Any]) -> None: ...  # TODO
    def addSuccess(self, test: Testable) -> None: ...
    def addSkip(self, test: Testable, reason: str) -> None: ...
    def addExpectedFailure(self, test: Testable, err: str) -> None: ...
    def addUnexpectedSuccess(self, test: Testable) -> None: ...

class _AssertRaisesBaseContext:
    expected = ...  # type: Any
    failureException = ...  # type: Type[BaseException]
    obj_name = ...  # type: str
    expected_regex = ...  # type: Pattern[str]

class _AssertRaisesContext(_AssertRaisesBaseContext):
    exception = ...  # type: Any # TODO precise type
    def __enter__(self) -> _AssertRaisesContext: ...
    def __exit__(self, exc_type, exc_value, tb) -> bool: ...

class TestCase(Testable):
    failureException = ...  # type: Type[BaseException]
    longMessage = ...  # type: bool
    maxDiff = ...  # type: Optional[int]
    def __init__(self, methodName: str = ...) -> None: ...
    def setUp(self) -> None: ...
    def tearDown(self) -> None: ...
    @classmethod
    def setUpClass(cls) -> None: ...
    @classmethod
    def tearDownClass(cls) -> None: ...
    def run(self, result: TestResult = ...) -> None: ...
    def debug(self) -> None: ...
    def assert_(self, expr: Any, msg: object = ...) -> None: ...
    def failUnless(self, expr: Any, msg: object = ...) -> None: ...
    def assertTrue(self, expr: Any, msg: object = ...) -> None: ...
    def assertEqual(self, first: Any, second: Any,
                    msg: object = ...) -> None: ...
    def assertEquals(self, first: Any, second: Any,
                     msg: object = ...) -> None: ...
    def failUnlessEqual(self, first: Any, second: Any,
                        msg: object = ...) -> None: ...
    def assertNotEqual(self, first: Any, second: Any,
                       msg: object = ...) -> None: ...
    def assertNotEquals(self, first: Any, second: Any,
                        msg: object = ...) -> None: ...
    def failIfEqual(self, first: Any, second: Any,
                    msg: object = ...) -> None: ...
    def assertAlmostEqual(self, first: float, second: float, places: int = ...,
                          msg: object = ...,
                          delta: float = ...) -> None: ...
    def assertAlmostEquals(self, first: float, second: float, places: int = ...,
                           msg: object = ...,
                           delta: float = ...) -> None: ...
    def failUnlessAlmostEqual(self, first: float, second: float, places: int = ...,
                              msg: object = ...) -> None: ...
    def assertNotAlmostEqual(self, first: float, second: float, places: int = ...,
                             msg: object = ...,
                             delta: float = ...) -> None: ...
    def assertNotAlmostEquals(self, first: float, second: float, places: int = ...,
                              msg: object = ...,
                              delta: float = ...) -> None: ...
    def failIfAlmostEqual(self, first: float, second: float, places: int = ...,
                          msg: object = ...,
                          delta: float = ...) -> None: ...
    def assertGreater(self, first: Any, second: Any,
                      msg: object = ...) -> None: ...
    def assertGreaterEqual(self, first: Any, second: Any,
                           msg: object = ...) -> None: ...
    def assertMultiLineEqual(self, first: str, second: str,
                             msg: object = ...) -> None: ...
    def assertSequenceEqual(self, first: Sequence[Any], second: Sequence[Any],
                            msg: object = ..., seq_type: type = ...) -> None: ...
    def assertListEqual(self, first: List[Any], second: List[Any],
                        msg: object = ...) -> None: ...
    def assertTupleEqual(self, first: Tuple[Any, ...], second: Tuple[Any, ...],
                         msg: object = ...) -> None: ...
    def assertSetEqual(self, first: Union[Set[Any], FrozenSet[Any]],
                       second: Union[Set[Any], FrozenSet[Any]], msg: object = ...) -> None: ...
    def assertDictEqual(self, first: Dict[Any, Any], second: Dict[Any, Any],
                        msg: object = ...) -> None: ...
    def assertLess(self, first: Any, second: Any,
                   msg: object = ...) -> None: ...
    def assertLessEqual(self, first: Any, second: Any,
                        msg: object = ...) -> None: ...
    @overload
    def assertRaises(self, exception: _ExceptionType, callable: Callable[..., Any], *args: Any, **kwargs: Any) -> None: ...
    @overload
    def assertRaises(self, exception: _ExceptionType) -> _AssertRaisesContext: ...
    @overload
    def assertRaisesRegexp(self, exception: _ExceptionType, regexp: _Regexp, callable: Callable[..., Any], *args: Any, **kwargs: Any) -> None: ...
    @overload
    def assertRaisesRegexp(self, exception: _ExceptionType, regexp: _Regexp) -> _AssertRaisesContext: ...
    def assertRegexpMatches(self, text: Text, regexp: _Regexp, msg: object = ...) -> None: ...
    def assertNotRegexpMatches(self, text: Text, regexp: _Regexp, msg: object = ...) -> None: ...
    def assertItemsEqual(self, first: Iterable[Any], second: Iterable[Any], msg: object = ...) -> None: ...
    def assertDictContainsSubset(self, expected: Dict[Any, Any], actual: Dict[Any, Any], msg: object = ...) -> None: ...
    def addTypeEqualityFunc(self, typeobj: type, function: Callable[..., None]) -> None: ...
    @overload
    def failUnlessRaises(self, exception: _ExceptionType, callable: Callable[..., Any], *args: Any, **kwargs: Any) -> None: ...
    @overload
    def failUnlessRaises(self, exception: _ExceptionType) -> _AssertRaisesContext: ...
    def failIf(self, expr: Any, msg: object = ...) -> None: ...
    def assertFalse(self, expr: Any, msg: object = ...) -> None: ...
    def assertIs(self, first: object, second: object,
                 msg: object = ...) -> None: ...
    def assertIsNot(self, first: object, second: object,
                    msg: object = ...) -> None: ...
    def assertIsNone(self, expr: Any, msg: object = ...) -> None: ...
    def assertIsNotNone(self, expr: Any, msg: object = ...) -> None: ...
    def assertIn(self, first: _T, second: Iterable[_T],
                 msg: object = ...) -> None: ...
    def assertNotIn(self, first: _T, second: Iterable[_T],
                    msg: object = ...) -> None: ...
    def assertIsInstance(self, obj: Any, cls: Union[type, Tuple[type, ...]],
                         msg: object = ...) -> None: ...
    def assertNotIsInstance(self, obj: Any, cls: Union[type, Tuple[type, ...]],
                            msg: object = ...) -> None: ...
    def fail(self, msg: object = ...) -> NoReturn: ...
    def countTestCases(self) -> int: ...
    def defaultTestResult(self) -> TestResult: ...
    def id(self) -> str: ...
    def shortDescription(self) -> str: ...  # May return None
    def addCleanup(function: Any, *args: Any, **kwargs: Any) -> None: ...
    def doCleanups(self) -> bool: ...
    def skipTest(self, reason: Any) -> None: ...

class FunctionTestCase(Testable):
    def __init__(self, testFunc: Callable[[], None],
                 setUp: Optional[Callable[[], None]] = ...,
                 tearDown: Optional[Callable[[], None]] = ...,
                 description: Optional[str] = ...) -> None: ...
    def run(self, result: TestResult) -> None: ...
    def debug(self) -> None: ...
    def countTestCases(self) -> int: ...

class TestSuite(Testable):
    def __init__(self, tests: Iterable[Testable] = ...) -> None: ...
    def addTest(self, test: Testable) -> None: ...
    def addTests(self, tests: Iterable[Testable]) -> None: ...
    def run(self, result: TestResult) -> None: ...
    def debug(self) -> None: ...
    def countTestCases(self) -> int: ...
    def __iter__(self) -> Iterator[Testable]: ...

class TestLoader:
    testMethodPrefix = ...  # type: str
    sortTestMethodsUsing = ...  # type: Optional[Callable[[str, str], int]]
    suiteClass = ...  # type: Callable[[List[TestCase]], TestSuite]
    def loadTestsFromTestCase(self,
                              testCaseClass: Type[TestCase]) -> TestSuite: ...
    def loadTestsFromModule(self, module: types.ModuleType = ...,
                            use_load_tests: bool = ...) -> TestSuite: ...
    def loadTestsFromName(self, name: str = ...,
                          module: Optional[types.ModuleType] = ...) -> TestSuite: ...
    def loadTestsFromNames(self, names: List[str] = ...,
                          module: Optional[types.ModuleType] = ...) -> TestSuite: ...
    def discover(self, start_dir: str, pattern: str = ...,
                 top_level_dir: Optional[str] = ...) -> TestSuite: ...
    def getTestCaseNames(self, testCaseClass: Type[TestCase] = ...) -> List[str]: ...

defaultTestLoader = ...  # type: TestLoader

class TextTestResult(TestResult):
    def __init__(self, stream: TextIO, descriptions: bool, verbosity: int) -> None: ...

class TextTestRunner:
    def __init__(self, stream: Optional[TextIO] = ..., descriptions: bool = ...,
                 verbosity: int = ..., failfast: bool = ..., buffer: bool = ...,
                 resultclass: Optional[Type[TestResult]] = ...) -> None: ...
    def _makeResult(self) -> TestResult: ...

class SkipTest(Exception):
    ...

# TODO precise types
def skipUnless(condition: Any, reason: Union[str, unicode]) -> Any: ...
def skipIf(condition: Any, reason: Union[str, unicode]) -> Any: ...
def expectedFailure(func: _FT) -> _FT: ...
def skip(reason: Union[str, unicode]) -> Any: ...

# not really documented
class TestProgram:
    result = ...  # type: TestResult

def main(module: str = ..., defaultTest: Optional[str] = ...,
         argv: Optional[Sequence[str]] = ...,
         testRunner: Union[Type[TextTestRunner], TextTestRunner, None] = ...,
         testLoader: TestLoader = ..., exit: bool = ..., verbosity: int = ...,
         failfast: Optional[bool] = ..., catchbreak: Optional[bool] = ...,
         buffer: Optional[bool] = ...) -> TestProgram: ...

def load_tests(loader: TestLoader, tests: TestSuite, pattern: Optional[Text]) -> TestSuite: ...

def installHandler() -> None: ...
def registerResult(result: TestResult) -> None: ...
def removeResult(result: TestResult) -> bool: ...
@overload
def removeHandler() -> None: ...
@overload
def removeHandler(function: Callable[..., Any]) -> Callable[..., Any]: ...

# private but occasionally used
util = ...  # type: types.ModuleType
