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-rw-r--r--coverage/env.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/coverage/env.py b/coverage/env.py
index 85ffa5f..af78844 100644
--- a/coverage/env.py
+++ b/coverage/env.py
@@ -15,7 +15,12 @@ PY2 = sys.version_info < (3, 0)
PY3 = sys.version_info >= (3, 0)
# Coverage.py specifics.
+
# Are we using the C-implemented trace function?
C_TRACER = os.getenv('COVERAGE_TEST_TRACER', 'c') == 'c'
+
# Are we coverage-measuring ourselves?
METACOV = os.getenv('COVERAGE_COVERAGE', '') != ''
+
+# Are we running our test suite?
+TESTING = os.getenv('COVERAGE_TESTING', '') != ''