#create-spyobj

Preserving original prototype method behavior versus partial mock generation in Jasmine 4 migration

Investigate the this-binding behavior of Jasmine spyOn when applied to prototype methods in Jasmine 4, particularly how the configuration interacts with and.callThrough(). The goal is to determine whether prototype method invocation via an instance reliably receives the correct context, or whether intermittent failures correlate with spy configuration choice