1. During testing of a computer function, a method of propagating an environmental error indication in a multi-system environment, the method comprising: responsive to identifying an environmental error at a first system of the multi-system environment, invoking a request from a testcase executing on the first system for an environmental error indication; sending the environmental error indication from the first system to at least one second system of the multi-system environment also executing said testcase; and receiving the environmental error indication at the least one second system and responsive thereto terminating execution of the testcase at the at least one second system.