summaryrefslogtreecommitdiff
path: root/tests/modules/process_test/try_execfile.py
diff options
context:
space:
mode:
authorNed Batchelder <ned@nedbatchelder.com>2016-06-12 09:45:41 -0400
committerNed Batchelder <ned@nedbatchelder.com>2016-06-12 09:45:41 -0400
commit1f4eb724612022db65e66186e6abfde4201f40e4 (patch)
tree1310997926d8baef5b7801b28086bd18a54e23c4 /tests/modules/process_test/try_execfile.py
parentc525acb8599ac107d24bb9e20b1bcdf12b4f76b6 (diff)
downloadpython-coveragepy-git-1f4eb724612022db65e66186e6abfde4201f40e4.tar.gz
Move try_execfile.py to an unambiguous place
Where it was, we were counting on "tests" referring to coverage.py's own tests directory, but a -e install of a helper like unittest-mixins could provide a tests directory, which prevented the imports we needed for the tests. Moving try_execfile.py to a new subdirectory with a less-common name solves the problem. --HG-- rename : tests/try_execfile.py => tests/modules/process_test/try_execfile.py
Diffstat (limited to 'tests/modules/process_test/try_execfile.py')
-rw-r--r--tests/modules/process_test/try_execfile.py84
1 files changed, 84 insertions, 0 deletions
diff --git a/tests/modules/process_test/try_execfile.py b/tests/modules/process_test/try_execfile.py
new file mode 100644
index 00000000..70905071
--- /dev/null
+++ b/tests/modules/process_test/try_execfile.py
@@ -0,0 +1,84 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+"""Test file for run_python_file.
+
+This file is executed two ways::
+
+ $ coverage run try_execfile.py
+
+and::
+
+ $ python try_execfile.py
+
+The output is compared to see that the program execution context is the same
+under coverage and under Python.
+
+It is not crucial that the execution be identical, there are some differences
+that are OK. This program canonicalizes the output to gloss over those
+differences and get a clean diff.
+
+"""
+
+import json, os, sys
+
+# sys.path varies by execution environments. Coverage.py uses setuptools to
+# make console scripts, which means pkg_resources is imported. pkg_resources
+# removes duplicate entries from sys.path. So we do that too, since the extra
+# entries don't affect the running of the program.
+
+def same_file(p1, p2):
+ """Determine if `p1` and `p2` refer to the same existing file."""
+ if not p1:
+ return not p2
+ if not os.path.exists(p1):
+ return False
+ if not os.path.exists(p2):
+ return False
+ if hasattr(os.path, "samefile"):
+ return os.path.samefile(p1, p2)
+ else:
+ norm1 = os.path.normcase(os.path.normpath(p1))
+ norm2 = os.path.normcase(os.path.normpath(p2))
+ return norm1 == norm2
+
+def without_same_files(filenames):
+ """Return the list `filenames` with duplicates (by same_file) removed."""
+ reduced = []
+ for filename in filenames:
+ if not any(same_file(filename, other) for other in reduced):
+ reduced.append(filename)
+ return reduced
+
+cleaned_sys_path = [os.path.normcase(p) for p in without_same_files(sys.path)]
+
+DATA = "xyzzy"
+
+import __main__
+
+def my_function(a):
+ """A function to force execution of module-level values."""
+ return "my_fn(%r)" % a
+
+FN_VAL = my_function("fooey")
+
+loader = globals().get('__loader__')
+fullname = getattr(loader, 'fullname', None) or getattr(loader, 'name', None)
+
+globals_to_check = {
+ '__name__': __name__,
+ '__file__': __file__,
+ '__doc__': __doc__,
+ '__builtins__.has_open': hasattr(__builtins__, 'open'),
+ '__builtins__.dir': dir(__builtins__),
+ '__loader__ exists': loader is not None,
+ '__loader__.fullname': fullname,
+ '__package__': __package__,
+ 'DATA': DATA,
+ 'FN_VAL': FN_VAL,
+ '__main__.DATA': getattr(__main__, "DATA", "nothing"),
+ 'argv': sys.argv,
+ 'path': cleaned_sys_path,
+}
+
+print(json.dumps(globals_to_check, indent=4, sort_keys=True))