kompress.kopen improvements

- tests
- uniform handling for bytes/str, always return utf8 str by default

tests/misc.py

@@ -3,8 +3,9 @@ from subprocess import check_call
 import gzip
 import lzma
 import io
+import zipfile
 
-from my.kython.kompress import kopen
+from my.kython.kompress import kopen, kexists
 
 
 import pytest # type: ignore
@@ -15,6 +16,8 @@ def prepare(tmp_path: Path):
     with (tmp_path / 'file.xz').open('wb') as f:
         with lzma.open(f, 'w') as lzf:
             lzf.write(b'compressed text')
+    with zipfile.ZipFile(tmp_path / 'file.zip', 'w') as zf:
+        zf.writestr('path/in/archive', 'data in zip')
     try:
         yield None
     finally:
@@ -24,12 +27,18 @@ def prepare(tmp_path: Path):
 def test_kopen(prepare, tmp_path: Path) -> None:
     "Plaintext handled transparently"
     assert kopen(tmp_path / 'file'   ).read() == 'just plaintext'
-    assert kopen(tmp_path / 'file.xz').read() == b'compressed text' # FIXME make this str
+    assert kopen(tmp_path / 'file.xz').read() == 'compressed text'
+
+    "For zips behaviour is a bit different (not sure about all this, tbh...)"
+    assert kopen(tmp_path / 'file.zip', 'path/in/archive').read() == 'data in zip'
 
 
-def test_kexists(tmp_path: Path) -> None:
-    # TODO
-    raise RuntimeError
+def test_kexists(prepare, tmp_path: Path) -> None:
+    assert     kexists(str(tmp_path / 'file.zip'), 'path/in/archive')
+    assert not kexists(str(tmp_path / 'file.zip'), 'path/notin/archive')
+
+    # TODO not sure about this?
+    assert not kexists(tmp_path / 'nosuchzip.zip', 'path/in/archive')
 
 
 def test_cpath():

tests/reddit.py

@@ -1,2 +1,4 @@
 # ugh. workaround for https://github.com/pytest-dev/pytest/issues/1927
 from my.reddit import *
+
+# TODO for reddit test, patch up to take every 10th archive or something; but make sure it's deterministic