Add undocumented methods and make types more specific in 2/unittest (#3550)

stdlib/2/unittest.pyi

@@ -15,6 +15,11 @@ _FT = TypeVar('_FT')
 _ExceptionType = Union[Type[BaseException], Tuple[Type[BaseException], ...]]
 _Regexp = Union[Text, Pattern[Text]]
 
+_SysExcInfoType = Union[
+    Tuple[Type[BaseException], BaseException, types.TracebackType],
+    Tuple[None, None, None],
+]
+
 class Testable(metaclass=ABCMeta):
     @abstractmethod
     def run(self, result: TestResult) -> None: ...
@@ -26,11 +31,11 @@ class Testable(metaclass=ABCMeta):
 # TODO ABC for test runners?
 
 class TestResult:
-    errors: List[Tuple[Testable, str]]
-    failures: List[Tuple[Testable, str]]
-    skipped: List[Tuple[Testable, str]]
-    expectedFailures: List[Tuple[Testable, str]]
-    unexpectedSuccesses: List[Testable]
+    errors: List[Tuple[TestCase, str]]
+    failures: List[Tuple[TestCase, str]]
+    skipped: List[Tuple[TestCase, str]]
+    expectedFailures: List[Tuple[TestCase, str]]
+    unexpectedSuccesses: List[TestCase]
     shouldStop: bool
     testsRun: int
     buffer: bool
@@ -38,16 +43,16 @@ class TestResult:
 
     def wasSuccessful(self) -> bool: ...
     def stop(self) -> None: ...
-    def startTest(self, test: Testable) -> None: ...
-    def stopTest(self, test: Testable) -> None: ...
+    def startTest(self, test: TestCase) -> None: ...
+    def stopTest(self, test: TestCase) -> 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: ...
+    def addError(self, test: TestCase, err: _SysExcInfoType) -> None: ...
+    def addFailure(self, test: TestCase, err: _SysExcInfoType) -> None: ...
+    def addSuccess(self, test: TestCase) -> None: ...
+    def addSkip(self, test: TestCase, reason: str) -> None: ...
+    def addExpectedFailure(self, test: TestCase, err: str) -> None: ...
+    def addUnexpectedSuccess(self, test: TestCase) -> None: ...
 
 class _AssertRaisesBaseContext:
     expected: Any
@@ -240,12 +245,16 @@ defaultTestLoader: TestLoader
 
 class TextTestResult(TestResult):
     def __init__(self, stream: TextIO, descriptions: bool, verbosity: int) -> None: ...
+    def getDescription(self, test: TestCase) -> str: ...  # undocumented
+    def printErrors(self) -> None: ...  # undocumented
+    def printErrorList(self, flavour: str, errors: List[Tuple[TestCase, str]]) -> None: ...  # undocumented
 
 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: ...
+    def run(self, test: Testable) -> TestResult: ...  # undocumented
 
 class SkipTest(Exception):
     ...

stdlib/3/unittest/result.pyi

@@ -1,11 +1,12 @@
-from typing import List, Optional, Tuple, Type
+from typing import List, Optional, Tuple, Type, Union
 from types import TracebackType
 import unittest.case
 
 
-_SysExcInfoType = Tuple[Optional[Type[BaseException]],
-                        Optional[BaseException],
-                        Optional[TracebackType]]
+_SysExcInfoType = Union[
+    Tuple[Type[BaseException], BaseException, TracebackType],
+    Tuple[None, None, None],
+]
 
 
 class TestResult: