• The length of the lawn is in the north-south axis
• The width of the lawn is in the east-west axis
• Lawn coordinate 0/0 is in the south-west corner of the lawn
• Attempting to move forwards when facing the edge of the lawn does nothing, and does not incure the time normally taken to move.

The GardenGizmos.SLMM solution can be built and run standalone. It will start a console app that exposes an API on localhost:5000. The following endpoints are available:

• /api/mowingmachine/position. This will return a JSON document showing the current position. The initial position is set at 0,0 (south-west corner) facing North.
• /api/mowingmachine/turn-clockwise. Instructs the machine to turn clockwise.
• /api/mowingmachine/turn-anticlockwise. Instructs the machine to turn anticlockwise.
• /api/mowingmachine/move-forwards. Instructs the machine to move forwards.

All requests except /position are queued and will be executed in turn. Movements take 5s and turns take 3s, and the position will not be updated until after the command is complete.

The /position request can be made at any time and indicates the current position (starting position if a command is in progress), regardless of any queued commands.

The GardenGizmos.SLMM.Tests project contains a single automated test that exercises the machine and tests boundary conditions. A single full-stack test is used because the API is stateful is respect of the machine.