para: Show more detail on failed time test

Give us more visibility into how badly a given host is failing in the
time test.

Updates #6963

diff --git a/common/para/para_test.go b/common/para/para_test.go
index e89f9360b60e85cb99e30ad98d2aee7864f78d78..627528cf9ae200af02e6c1716f8120a7d912e192 100644 (file)
--- a/common/para/para_test.go
+++ b/common/para/para_test.go
@@ -81,6 +81,9 @@ func TestPara(t *testing.T) {
 
                c.Assert(r.Wait(), qt.IsNil)
                c.Assert(counter, qt.Equals, int64(n))
-               c.Assert(time.Since(start) < n/2*time.Millisecond, qt.Equals, true)
+
+               since := time.Since(start)
+               limit := n / 2 * time.Millisecond
+               c.Assert(since < limit, qt.Equals, true, qt.Commentf("%s >= %s", since, limit))
        })
 }