The integrity of a fluid or gas-filled container can be tested in terms of its propensity to burst.
This may involve a failure in the material by splitting, or perhaps a seal/seam gives way or even the closure can break loose.
There is a variety of test methods involving inflationary burst created by internal pressure, often including sensitive gaseous leak detection.
However, a simple and pragmatic option involves compressing a filled container, using a probe with a standard radius or flat tip, and measuring the force to burst it.
Seals and seams can usually be tested by cutting a transverse sample from a container and peeling the seam apart to determine its mechanical strength.