From 5ce2e44a3650b4aa02edbc3766cd10fe0c5ac088 Mon Sep 17 00:00:00 2001
From: "A.J. Beamon" <aj.beamon@snowflake.com>
Date: Thu, 26 Aug 2021 12:20:09 -0700
Subject: [PATCH] Unit tests require a match from the test pattern in order to
 be successful. This avoids cases where a typo in the pattern might lead one
 to believe that their tests were all successful.

---
 fdbserver/workloads/UnitTests.actor.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fdbserver/workloads/UnitTests.actor.cpp b/fdbserver/workloads/UnitTests.actor.cpp
index b9b792afe4..b361115645 100644
--- a/fdbserver/workloads/UnitTests.actor.cpp
+++ b/fdbserver/workloads/UnitTests.actor.cpp
@@ -110,7 +110,15 @@ struct UnitTestWorkload : TestWorkload {
 				tests.push_back(test);
 			}
 		}
+
 		fprintf(stdout, "Found %zu tests\n", tests.size());
+
+		if (tests.size() == 0) {
+			TraceEvent(SevError, "NoMatchingUnitTests").detail("TestPattern", self->testPattern);
+			++self->testsFailed;
+			return Void();
+		}
+
 		deterministicRandom()->randomShuffle(tests);
 		if (self->testRunLimit > 0 && tests.size() > self->testRunLimit)
 			tests.resize(self->testRunLimit);