s/--cache/--show-cache/

_pytest/cacheprovider.py

@@ -11,7 +11,7 @@ import json
 from os.path import sep as _sep, altsep as _altsep
 
 
-class Cache:
+class Cache(object):
     def __init__(self, config):
         self.config = config
         self._cachedir = config.rootdir.join(".cache")
@@ -152,7 +152,7 @@ def pytest_addoption(parser):
              "This may re-order tests and thus lead to "
              "repeated fixture setup/teardown")
     group.addoption(
-        '--cache', action='store_true', dest="showcache",
+        '--show-cache', action='store_true', dest="showcache",
         help="show cache contents, don't perform collection or tests")
     group.addoption(
         '--clearcache', action='store_true', dest="clearcache",

testing/test_cache.py

@@ -67,7 +67,7 @@ def test_cache_reportheader(testdir):
     ])
 
 def test_cache_show(testdir):
-    result = testdir.runpytest("--cache")
+    result = testdir.runpytest("--show-cache")
     assert result.ret == 0
     result.stdout.fnmatch_lines([
         "*cache is empty*"
@@ -82,7 +82,7 @@ def test_cache_show(testdir):
     """)
     result = testdir.runpytest()
     assert result.ret == 0
-    result = testdir.runpytest("--cache")
+    result = testdir.runpytest("--show-cache")
     result.stdout.fnmatch_lines_random([
         "*cachedir:*",
         "-*cache values*-",