A testing device for evaluating operations of software installed in a mobile terminal includes a scenario selecting unit configured to select a scenario that includes information for causing the mobile terminal to execute a function that should be operated by the mobile terminal, a scenario execution determining unit configured to determine whether the scenario selected by the scenario selecting unit is executable, a scenario execution unit configured to execute the scenario determined to be executable by the scenario execution determining unit, and a scenario execution result determining unit configured to determine whether an execution result of the scenario executed by the scenario execution unit is the same as a result expected beforehand. The scenario execution determining unit determines whether the scenario selected by the scenario selecting unit is executable based on the execution result of the scenario executed by the scenario execution unit in the past.