Migrate rest of main keys and update suite to be more pytest-relaxed compat

Main branch as of today:

350 passed, 21 skipped, 52 deselected, 3 warnings in 11.10s

This branch as of this commit:

361 passed, 21 skipped, 52 deselected, 3 warnings in 10.51s

Of those 11 "new" tests, 8 are ones I wrote (tests/pkey.py). Hard to
figure out what the other 3 are given pytest-relaxed's output is very
different from regular verbose pytest. oops.

1 files changed, 0 insertions, 232 deletions

diff --git a/tests/stub_sftp.py b/tests/stub_sftp.py
deleted file mode 100644
index 0c0372e9..00000000
--- a/tests/stub_sftp.py
+++ /dev/null
@@ -1,232 +0,0 @@
-# Copyright (C) 2003-2009  Robey Pointer <robeypointer@gmail.com>
-#
-# This file is part of paramiko.
-#
-# Paramiko is free software; you can redistribute it and/or modify it under the
-# terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation; either version 2.1 of the License, or (at your option)
-# any later version.
-#
-# Paramiko is distributed in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-# A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License
-# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
-
-"""
-A stub SFTP server for loopback SFTP testing.
-"""
-
-import os
-
-from paramiko import (
-    AUTH_SUCCESSFUL,
-    OPEN_SUCCEEDED,
-    SFTPAttributes,
-    SFTPHandle,
-    SFTPServer,
-    SFTPServerInterface,
-    SFTP_FAILURE,
-    SFTP_OK,
-    ServerInterface,
-)
-from paramiko.common import o666
-
-
-class StubServer(ServerInterface):
-    def check_auth_password(self, username, password):
-        # all are allowed
-        return AUTH_SUCCESSFUL
-
-    def check_channel_request(self, kind, chanid):
-        return OPEN_SUCCEEDED
-
-
-class StubSFTPHandle(SFTPHandle):
-    def stat(self):
-        try:
-            return SFTPAttributes.from_stat(os.fstat(self.readfile.fileno()))
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-
-    def chattr(self, attr):
-        # python doesn't have equivalents to fchown or fchmod, so we have to
-        # use the stored filename
-        try:
-            SFTPServer.set_file_attr(self.filename, attr)
-            return SFTP_OK
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-
-
-class StubSFTPServer(SFTPServerInterface):
-    # assume current folder is a fine root
-    # (the tests always create and eventually delete a subfolder, so there
-    # shouldn't be any mess)
-    ROOT = os.getcwd()
-
-    def _realpath(self, path):
-        return self.ROOT + self.canonicalize(path)
-
-    def list_folder(self, path):
-        path = self._realpath(path)
-        try:
-            out = []
-            flist = os.listdir(path)
-            for fname in flist:
-                attr = SFTPAttributes.from_stat(
-                    os.stat(os.path.join(path, fname))
-                )
-                attr.filename = fname
-                out.append(attr)
-            return out
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-
-    def stat(self, path):
-        path = self._realpath(path)
-        try:
-            return SFTPAttributes.from_stat(os.stat(path))
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-
-    def lstat(self, path):
-        path = self._realpath(path)
-        try:
-            return SFTPAttributes.from_stat(os.lstat(path))
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-
-    def open(self, path, flags, attr):
-        path = self._realpath(path)
-        try:
-            binary_flag = getattr(os, "O_BINARY", 0)
-            flags |= binary_flag
-            mode = getattr(attr, "st_mode", None)
-            if mode is not None:
-                fd = os.open(path, flags, mode)
-            else:
-                # os.open() defaults to 0777 which is
-                # an odd default mode for files
-                fd = os.open(path, flags, o666)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        if (flags & os.O_CREAT) and (attr is not None):
-            attr._flags &= ~attr.FLAG_PERMISSIONS
-            SFTPServer.set_file_attr(path, attr)
-        if flags & os.O_WRONLY:
-            if flags & os.O_APPEND:
-                fstr = "ab"
-            else:
-                fstr = "wb"
-        elif flags & os.O_RDWR:
-            if flags & os.O_APPEND:
-                fstr = "a+b"
-            else:
-                fstr = "r+b"
-        else:
-            # O_RDONLY (== 0)
-            fstr = "rb"
-        try:
-            f = os.fdopen(fd, fstr)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        fobj = StubSFTPHandle(flags)
-        fobj.filename = path
-        fobj.readfile = f
-        fobj.writefile = f
-        return fobj
-
-    def remove(self, path):
-        path = self._realpath(path)
-        try:
-            os.remove(path)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def rename(self, oldpath, newpath):
-        oldpath = self._realpath(oldpath)
-        newpath = self._realpath(newpath)
-        if os.path.exists(newpath):
-            return SFTP_FAILURE
-        try:
-            os.rename(oldpath, newpath)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def posix_rename(self, oldpath, newpath):
-        oldpath = self._realpath(oldpath)
-        newpath = self._realpath(newpath)
-        try:
-            os.rename(oldpath, newpath)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def mkdir(self, path, attr):
-        path = self._realpath(path)
-        try:
-            os.mkdir(path)
-            if attr is not None:
-                SFTPServer.set_file_attr(path, attr)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def rmdir(self, path):
-        path = self._realpath(path)
-        try:
-            os.rmdir(path)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def chattr(self, path, attr):
-        path = self._realpath(path)
-        try:
-            SFTPServer.set_file_attr(path, attr)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def symlink(self, target_path, path):
-        path = self._realpath(path)
-        if (len(target_path) > 0) and (target_path[0] == "/"):
-            # absolute symlink
-            target_path = os.path.join(self.ROOT, target_path[1:])
-            if target_path[:2] == "//":
-                # bug in os.path.join
-                target_path = target_path[1:]
-        else:
-            # compute relative to path
-            abspath = os.path.join(os.path.dirname(path), target_path)
-            if abspath[: len(self.ROOT)] != self.ROOT:
-                # this symlink isn't going to work anyway -- just break it
-                # immediately
-                target_path = "<error>"
-        try:
-            os.symlink(target_path, path)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        return SFTP_OK
-
-    def readlink(self, path):
-        path = self._realpath(path)
-        try:
-            symlink = os.readlink(path)
-        except OSError as e:
-            return SFTPServer.convert_errno(e.errno)
-        # if it's absolute, remove the root
-        if os.path.isabs(symlink):
-            if symlink[: len(self.ROOT)] == self.ROOT:
-                symlink = symlink[len(self.ROOT) :]
-                if (len(symlink) == 0) or (symlink[0] != "/"):
-                    symlink = "/" + symlink
-            else:
-                symlink = "<error>"
-        return symlink