feat: add result transaction SQL boundary

server/store/result_sql_test.go

@@ -0,0 +1,30 @@
+package store
+
+import "testing"
+
+func TestResultSQLPreservesReceiptConflictAndAtomicCommitBoundaries(t *testing.T) {
+	checks := map[string][]string{
+		ResultReceiptInsertSQL: {"ON CONFLICT DO NOTHING", "payload_digest", "integrity_state"},
+		ResultReceiptSelectSQL: {"FOR UPDATE", "committed_at"},
+		ResultCommitLockSQL:    {"server_id = $2", "FOR UPDATE"},
+		ResultMatchCompleteSQL: {"state = 'RESULT_PENDING'", "revision = revision + 1"},
+		ResultOutboxSQL:        {"match_completed", "aggregate_id", "revision"},
+		RatingLockSQL:          {"ORDER BY player_id", "FOR UPDATE"},
+	}
+	for query, fragments := range checks {
+		for _, fragment := range fragments {
+			if !contains(query, fragment) {
+				t.Fatalf("query %q missing %q", query, fragment)
+			}
+		}
+	}
+}
+
+func contains(value, fragment string) bool {
+	for i := 0; i+len(fragment) <= len(value); i++ {
+		if value[i:i+len(fragment)] == fragment {
+			return true
+		}
+	}
+	return false
+}