jw.pkg.lib.Result: Add unit test

Add a unit test for the Result class covering:
- stdout/stderr property access with various status values - None output handling and exception behavior - Encoding and strip_output property setters - cmd and wd setters - summary, summarize, and __repr__ behavior - matches_error pattern matching
Signed-off-by: Jan Lindemann <jan@janware.com>

test/unit/python/jw/pkg/lib/Result/Makefile

@@ -0,0 +1,8 @@
+TOPDIR = ../../../../../../..
+
+include $(TOPDIR)/make/proj.mk
+include $(JWBDIR)/make/py-run.mk
+
+all:
+
+test: run

test/unit/python/jw/pkg/lib/Result/test.py

@@ -0,0 +1,159 @@
+from jw.pkg.lib.Result import Result
+
+# -- Basic construction --
+
+r = Result(stdout=b'hello', stderr=b'world', status=0)
+assert r.status == 0
+assert r.stdout == b'hello'
+assert r.stderr == b'world'
+
+# -- stdout property --
+
+r = Result(stdout=b'test', status=0)
+assert r.stdout == b'test'
+
+# stdout_or_none returns raw value
+r = Result(stdout=b'test', status=0)
+assert r.stdout_or_none == b'test'
+
+# stdout_str_or_none returns decoded string
+r = Result(stdout=b'test', status=0)
+assert r.stdout_str_or_none == 'test'
+
+# stdout_str returns decoded string
+r = Result(stdout=b'test', status=0)
+assert r.stdout_str == 'test'
+
+# stdout returns b'' when stdout is None and status == 0
+r = Result(stdout=None, status=0)
+assert r.stdout == b''
+
+# stdout raises when stdout is None and status != 0
+r = Result(stdout=None, status=1)
+try:
+    _ = r.stdout
+    assert False, 'Should have raised'
+except Exception:
+    pass
+
+# -- stderr property --
+
+r = Result(stderr=b'error', status=1)
+assert r.stderr == b'error'
+
+# stderr_or_none returns raw value
+r = Result(stderr=b'err', status=1)
+assert r.stderr_or_none == b'err'
+
+# stderr_str_or_none returns decoded string
+r = Result(stderr=b'err', status=1)
+assert r.stderr_str_or_none == 'err'
+
+# stderr_str returns decoded string
+r = Result(stderr=b'err', status=1)
+assert r.stderr_str == 'err'
+
+# stderr returns b'' when stderr is None and status != 0 (error case)
+r = Result(stderr=None, status=1)
+assert r.stderr == b''
+
+# stderr raises when stderr is None and status == 0 (success case)
+r = Result(stderr=None, status=0)
+try:
+    _ = r.stderr
+    assert False, 'Should have raised'
+except Exception:
+    pass
+
+# -- None outputs --
+
+r = Result(stdout=None, stderr=None, status=1)
+assert r.stdout_or_none is None
+assert r.stderr_or_none is None
+assert r.stdout_str_or_none is None
+assert r.stderr_str_or_none is None
+
+# -- encoding --
+
+r = Result(stdout=b'caf\xc3\xa9', encoding='UTF-8')
+assert r.encoding == 'UTF-8'
+assert r.stdout_str == 'café'
+
+r = Result(stdout=b'test', encoding='UTF-8')
+r.encoding = 'ASCII'
+assert r.encoding == 'ASCII'
+
+# -- strip_output --
+
+r = Result(stdout=b'  spaces  ', status=0)
+assert r.stdout_str_or_none == '  spaces  '
+
+r = Result(stdout=b'  spaces  ', status=0, strip_output=True)
+assert r.stdout_str_or_none == 'spaces'
+
+r = Result(stdout=b'  lines  \n', status=0, strip_output=True)
+assert r.stdout_str_or_none == 'lines'
+
+# -- cmd and wd setters --
+
+r = Result(cmd=['echo', 'hello'], wd='/tmp')
+assert r.cmd == ['echo', 'hello']
+assert r.wd == '/tmp'
+
+r.cmd = ['ls', '-la']
+r.wd = '/home'
+assert r.cmd == ['ls', '-la']
+assert r.wd == '/home'
+
+# -- summary --
+
+r = Result(stdout=b'output', status=0)
+assert 'status 0' in r.summary
+
+r = Result(stderr=b'error', status=1)
+assert 'status 1' in r.summary
+assert 'stderr' in r.summary
+
+# -- matches_error --
+
+r = Result(stderr=b'fatal error: missing file', status=128)
+assert r.matches_error('fatal error')
+
+r = Result(stderr=b'fatal error: missing file', status=128)
+assert not r.matches_error('success')
+
+r = Result(stdout=b'ok', stderr=b'', status=0)
+assert not r.matches_error('.*')
+
+r = Result(stdout=b'ok', stderr=None, status=0)
+assert not r.matches_error('.*')
+
+# -- summarize with custom cmd/wd --
+
+r = Result(stdout=b'out', status=0, cmd=['echo', 'test'], wd='/tmp')
+assert 'echo' in r.summary or 'status 0' in r.summary
+
+# -- __repr__ --
+
+r = Result(stdout=b'repr test', status=0)
+s = repr(r)
+assert '0' in s  # verbose=False uses numeric status
+assert 'repr test' in s
+
+# -- encoding setter --
+
+r = Result(stdout=b'test', status=0, encoding='UTF-8')
+assert r.encoding == 'UTF-8'
+r.encoding = 'ASCII'
+assert r.encoding == 'ASCII'
+
+# -- strip_output setter --
+
+r = Result(stdout=b'  x  ', status=0, strip_output=False)
+assert r.stdout_str_or_none == '  x  '
+r.strip_output = True
+# strip_output is a property setter, the value is stored
+# But __decode is called at property access time using current strip_output
+assert r.stdout_str_or_none == 'x'
+
+print('All Result tests passed')