Path returns the path to the currently running executable.

Run interprets os.Args as a testtask script if the current program was launched with an environment configured by SetCmdEnv or SetTaskEnv.

SetCmdEnv configures the environment of cmd so that Run executes a testtask script when called from within cmd.

SetTaskConfigEnv configures the environment of t so that Run executes a testtask script when called from within t.

SetTaskEnv configures the environment of t so that Run executes a testtask script when called from within t.