* Initial fix for launch
* Minor fixes
* Succesful launch tests
* More launch test fixes
* Some bit of cleanup
* Fix linter
* More cleanup
* Attach using import
* Fix circular importing
* Support attach via command line
* Backchannel and Other test fixes
* Linter fix
* Python path fix in test
* Fix lint after rebase
* Support exitCode in tests
* More fixes after rebase
* Fix expected exit code
* Remove changes to MessageDict __call__
* Remove hold subprocess event
Separate message parsing and message handling into separate threads.
Remove nested message handling in request handlers via `yield`, since it is incompatible with the new split model, and replace it with NO_RESPONSE and Request.respond() to defer responses until later.
Change Message.cant_handle() and Message.isnt_valid() to respond to the request and return the exception, instead of raising it, to accommodate NO_RESPONSE scenarios where a failure needs to be reported later.
Fix#1678: Do not rely on "processId" being returned by "runInTerminal" request
Extract debuggee PID from the "process" event sent by the debug server.
Fix#1679: "exited" event sometimes reports "exitCode": null
Report it as -1 if it cannot be retrieved from the debuggee process.
Fix#1680: Fatal errors in message loop do not fail fast
os._exit() immediately if a fatal error occurs in message parsing or message handling background threads.
* Remove wrapper and in-proc support code
* Fixing up multiproc patching
* Address comments
* Import cleanup
* More cleanup
* Remove loopback fast path
* Disable IDE disconnect unpause-ing
* Add missing file to do not trace
Fix#1605: Debuggee process lifetime management
Mitigate #1637: log.exception() doesn't capture the full stack
Handle "launch" request, parse and validate the debug configuration, and spawn the debuggee process with debug server.
Track debuggee process and its subprocesses, and kill them as needed.
Refactor Singleton and ThreadSafeSingleton to allow for easier synchronization between IDE and server message handlers without excessive locking.
Fix various corner cases and race conditions in disconnect scenarios.
Make log.exception() log the calling stack, not just the exception stack.
Add JSON property validation to MessageDict.
Add --log-stderr switch to the server to enable full logging to stderr.
Add --cls switch to the adapter to reset terminal before logging anything (for convenience when debugging it).
Add some printf-debugging helpers.
Add ptvsd.adapter.contract module as a single access point for capabilities and other immutable IDE and server metadata.
Change the semantics of Channels.server() to enable checks for disconnected server.
Fix "disconnect" and "terminate" handling when not connected to debug server.
Do best-effort handling of "ptvsd_systemInfo" if not connected to debug server.
Add long_tmpdir fixture, that always supplies a long rather than short path name on Windows.
Use long_tmpdir in the implementation of @pyfile, and in all tests that use tmpdir to generate code.
Implement per-test-runner out-of-process watchdog for processes spawned by tests.
Add file logging for tests and watchdog.
Improve stdio capture in debug.Session when test fails.
Remove redundant logging in debug.Session.
Wait on a breakpoint before checking output.
Add temp workaround for #1574: Flask tests fail with "no such option: --wait" on windows py27
Pin Flask version to last known good one in tests/requirements.txt.
Other fixes and improvements:
Make start_method mandatory for debug.Session to avoid problems with tests forgetting to specify it.
Add debug_me.scratchpad to enable async communication between test code and debuggee.
Improve debug.Session logging.
Improve test_attach.
Reformat various timeline log entries to improve readability.
Add pretty-printing of composite expectations, to match pretty-printed JSON.
Avoid redundant repetitions of messages when explaining how occurrences matched expectations.
Fix Flask and Django multiprocess tests.
Fix test logs not being captured by pytest.
Fix "import debug_me" check improperly applied in tests where it is unnecessary.
Fix some clarifying patterns not respecting the underlying pattern.
Add pattern helpers for strings: starting_with, ending_with, containing.
Move DAP test helpers to a separate module, and add a helper for frames.
Add support for line markers when setting breakpoints and matching frames.
Assorted test fixes around handling of Unicode and paths.
