An internal function but exported because it is cross-package; part of the implementation of the "go test" command.

MainStart is meant for use by tests generated by 'go test'.

Short reports whether the -test.short flag is set.

Verbose reports whether the -test.v flag is set.

An internal type but exported because it is cross-package; part of the implementation of the "go test" command.

M is a type passed to a TestMain function to run the actual tests.

T is a type passed to Test functions to manage test state and support formatted test logs.

TB is the interface common to T and B.