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-rw-r--r--src/bin/psql/t/001_basic.pl10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/bin/psql/t/001_basic.pl b/src/bin/psql/t/001_basic.pl
index 5f2f4541af0..bd4fdd2030a 100644
--- a/src/bin/psql/t/001_basic.pl
+++ b/src/bin/psql/t/001_basic.pl
@@ -352,8 +352,14 @@ psql_like(
# Check \watch
# Note: the interval value is parsed with locale-aware strtod()
-psql_like($node, sprintf('SELECT 1 \watch c=3 i=%g', 0.01),
- qr/1\n1\n1/, '\watch with 3 iterations');
+psql_like(
+ $node, sprintf('SELECT 1 \watch c=3 i=%g', 0.01),
+ qr/1\n1\n1/, '\watch with 3 iterations, interval of 0.01');
+
+# Sub-millisecond wait works, equivalent to 0.
+psql_like(
+ $node, sprintf('SELECT 1 \watch c=3 i=%g', 0.0001),
+ qr/1\n1\n1/, '\watch with 3 iterations, interval of 0.0001');
# Check \watch minimum row count
psql_fails_like(