test: verify sqlite busy timeout across pooled connections

Author: cropflre

internal/store/sqlite_busy_timeout_test.go

@@ -0,0 +1,31 @@
+package store
+
+import (
+	"context"
+	"testing"
+)
+
+func TestSQLiteBusyTimeoutAppliesToEveryPooledConnection(t *testing.T) {
+	setupTestDB(t)
+
+	ctx := context.Background()
+	conns := make([]interface{ Close() error }, 0, 4)
+	for i := 0; i < 4; i++ {
+		conn, err := DB().Conn(ctx)
+		if err != nil {
+			t.Fatalf("open pooled connection %d: %v", i, err)
+		}
+		conns = append(conns, conn)
+
+		var timeout int
+		if err := conn.QueryRowContext(ctx, `PRAGMA busy_timeout`).Scan(&timeout); err != nil {
+			t.Fatalf("read busy_timeout on connection %d: %v", i, err)
+		}
+		if timeout != 30000 {
+			t.Fatalf("connection %d busy_timeout=%d, want 30000", i, timeout)
+		}
+	}
+	for _, conn := range conns {
+		_ = conn.Close()
+	}
+}