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-rw-r--r--test/test_process.py20
1 files changed, 20 insertions, 0 deletions
diff --git a/test/test_process.py b/test/test_process.py
index c32868be..e62fce22 100644
--- a/test/test_process.py
+++ b/test/test_process.py
@@ -292,3 +292,23 @@ class ProcessTest(CoverageTest):
self.assertTrue("No module named no_such_module" in out)
self.assertTrue("warning" not in out)
+ if sys.version_info >= (2, 7): # Need coverage runnable as a module.
+ def test_fullcoverage(self):
+ # fullcoverage is a trick to get stdlib modules measured from the
+ # very beginning of the process. Here we import os and then check
+ # how many lines are measured.
+ self.make_file("getenv.py", """\
+ import os
+ print("FOOEY == %s" % os.getenv("FOOEY"))
+ """)
+
+ fullcov = os.path.join(os.path.dirname(coverage.__file__), "fullcoverage")
+ self.set_environ("FOOEY", "BOO")
+ self.set_environ("PYTHONPATH", fullcov)
+ out = self.run_command("python -m coverage run -L getenv.py")
+ self.assertEqual(out, "FOOEY == BOO\n")
+ data = coverage.CoverageData()
+ data.read_file(".coverage")
+ # The actual number of lines in os.py executed when it is imported
+ # is 120 or so. Just running os.getenv executes about 5.
+ self.assertGreater(data.summary()['os.py'], 50)