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, 13 insertions, 0 deletions

diff --git a/tests/pkey.py b/tests/pkey.py
new file mode 100644
index 00000000..b1cba825
--- /dev/null
+++ b/tests/pkey.py
@@ -0,0 +1,13 @@
+from paramiko import PKey
+
+
+class PKey_:
+    class from_type_string:
+        def loads_from_type_and_bytes(self, key):
+            obj = PKey.from_type_string(key.full_type, key.pkey.asbytes())
+            assert obj == key.pkey
+
+    class from_path:
+        def loads_from_file_path(self, key):
+            obj = PKey.from_path(key.path)
+            assert obj == key.pkey