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-rw-r--r--coverage/cmdline.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/coverage/cmdline.py b/coverage/cmdline.py
index d557ddf1..62edc207 100644
--- a/coverage/cmdline.py
+++ b/coverage/cmdline.py
@@ -629,7 +629,10 @@ class CoverageScript(object):
fail_under = self.coverage.get_option("report:fail_under")
precision = self.coverage.get_option("report:precision")
if should_fail_under(total, fail_under, precision):
- print("fail-under has failed")
+ msg = "total of {total:.{p}f} is less than fail-under={fail_under:.{p}f}".format(
+ total=total, fail_under=fail_under, p=precision,
+ )
+ print("Coverage failure:", msg)
return FAIL_UNDER
return OK