1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/isolation/specs/create-trigger.spec b/src/test/isolation/specs/create-trigger.spec
new file mode 100644
index 00000000000..34fad7521f5
--- /dev/null
+++ b/src/test/isolation/specs/create-trigger.spec
@@ -0,0 +1,28 @@
+# CREATE TRIGGER - Add trigger with concurrent reads
+#
+# CREATE TRIGGER uses ShareRowExclusiveLock so we mix writes with it
+# to see what works or waits.
+
+setup
+{
+ CREATE TABLE a (i int);
+ CREATE FUNCTION f() RETURNS TRIGGER LANGUAGE plpgsql AS 'BEGIN RETURN NULL; END;';
+ INSERT INTO a VALUES (0), (1), (2), (3);
+}
+
+teardown
+{
+ DROP TABLE a;
+ DROP FUNCTION f();
+}
+
+session "s1"
+step "s1a" { BEGIN; }
+step "s1b" { CREATE TRIGGER t AFTER UPDATE ON a EXECUTE PROCEDURE f(); }
+step "s1c" { COMMIT; }
+
+session "s2"
+step "s2a" { BEGIN; }
+step "s2b" { SELECT * FROM a WHERE i = 1 FOR UPDATE; }
+step "s2c" { UPDATE a SET i = 4 WHERE i = 3; }
+step "s2d" { COMMIT; }