{
  "function": "update",
  "cases": [
    {
      "name": "toggle-pause-pauses-a-playing-game",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 0
        },
        {
          "tag": "TogglePause"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Paused",
        "frame": 0
      }
    },
    {
      "name": "toggle-pause-resumes-a-paused-game",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Paused",
          "frame": 0
        },
        {
          "tag": "TogglePause"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Playing",
        "frame": 0
      }
    },
    {
      "name": "toggle-pause-ignored-when-game-over",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "GameOver",
          "frame": 0
        },
        {
          "tag": "TogglePause"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "GameOver",
        "frame": 0
      }
    },
    {
      "name": "toggle-pause-ignored-when-won",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Won",
          "frame": 0
        },
        {
          "tag": "TogglePause"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Won",
        "frame": 0
      }
    },
    {
      "name": "turn-while-paused-is-ignored",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Paused",
          "frame": 0
        },
        {
          "tag": "Turn",
          "dir": "Up"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Paused",
        "frame": 0
      }
    },
    {
      "name": "tick-while-paused-is-ignored",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Paused",
          "frame": 0
        },
        {
          "tag": "Tick"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Paused",
        "frame": 0
      }
    },
    {
      "name": "restart-from-playing-starts-a-new-game-with-the-same-seed",
      "args": [
        {
          "width": 20,
          "height": 20,
          "snake": [
            {
              "x": 3,
              "y": 3
            }
          ],
          "dir": "Up",
          "nextDir": "Up",
          "apple": null,
          "seed": 0,
          "score": 5,
          "status": "Playing",
          "frame": 9
        },
        {
          "tag": "Restart"
        }
      ],
      "expected": {
        "width": 20,
        "height": 20,
        "snake": [
          {
            "x": 10,
            "y": 10
          },
          {
            "x": 9,
            "y": 10
          },
          {
            "x": 8,
            "y": 10
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 18,
          "y": 13
        },
        "seed": 1831565813,
        "score": 0,
        "status": "Playing",
        "frame": 0
      }
    },
    {
      "name": "restart-from-game-over",
      "args": [
        {
          "width": 20,
          "height": 20,
          "snake": [
            {
              "x": 10,
              "y": 10
            },
            {
              "x": 9,
              "y": 10
            },
            {
              "x": 8,
              "y": 10
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": null,
          "seed": 0,
          "score": 2,
          "status": "GameOver",
          "frame": 0
        },
        {
          "tag": "Restart"
        }
      ],
      "expected": {
        "width": 20,
        "height": 20,
        "snake": [
          {
            "x": 10,
            "y": 10
          },
          {
            "x": 9,
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          },
          {
            "x": 8,
            "y": 10
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 18,
          "y": 13
        },
        "seed": 1831565813,
        "score": 0,
        "status": "Playing",
        "frame": 0
      }
    },
    {
      "name": "restart-from-won",
      "args": [
        {
          "width": 20,
          "height": 20,
          "snake": [
            {
              "x": 10,
              "y": 10
            },
            {
              "x": 9,
              "y": 10
            },
            {
              "x": 8,
              "y": 10
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": null,
          "seed": 0,
          "score": 7,
          "status": "Won",
          "frame": 0
        },
        {
          "tag": "Restart"
        }
      ],
      "expected": {
        "width": 20,
        "height": 20,
        "snake": [
          {
            "x": 10,
            "y": 10
          },
          {
            "x": 9,
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          },
          {
            "x": 8,
            "y": 10
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 18,
          "y": 13
        },
        "seed": 1831565813,
        "score": 0,
        "status": "Playing",
        "frame": 0
      }
    },
    {
      "name": "restart-from-paused",
      "args": [
        {
          "width": 20,
          "height": 20,
          "snake": [
            {
              "x": 10,
              "y": 10
            },
            {
              "x": 9,
              "y": 10
            },
            {
              "x": 8,
              "y": 10
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": null,
          "seed": 0,
          "score": 0,
          "status": "Paused",
          "frame": 0
        },
        {
          "tag": "Restart"
        }
      ],
      "expected": {
        "width": 20,
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        "snake": [
          {
            "x": 10,
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          },
          {
            "x": 9,
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          },
          {
            "x": 8,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 18,
          "y": 13
        },
        "seed": 1831565813,
        "score": 0,
        "status": "Playing",
        "frame": 0
      }
    },
    {
      "name": "frame-below-threshold-only-counts-the-frame",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 0
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Playing",
        "frame": 1
      }
    },
    {
      "name": "frame-just-before-threshold-only-counts-the-frame",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 6
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
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        "apple": {
          "x": 2,
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        },
        "seed": 0,
        "score": 0,
        "status": "Playing",
        "frame": 7
      }
    },
    {
      "name": "frame-at-threshold-ticks-the-game",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
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          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
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        "snake": [
          {
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          }
        ],
        "dir": "Right",
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        "apple": {
          "x": 2,
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        },
        "seed": 0,
        "score": 0,
        "status": "Playing",
        "frame": 8
      }
    },
    {
      "name": "frame-at-second-multiple-of-threshold-ticks-again",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 15
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 1,
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          }
        ],
        "dir": "Right",
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        "apple": {
          "x": 2,
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        },
        "seed": 0,
        "score": 0,
        "status": "Playing",
        "frame": 16
      }
    },
    {
      "name": "frame-threshold-shrinks-as-score-grows",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
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            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 3,
          "status": "Playing",
          "frame": 6
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 1,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 3,
        "status": "Playing",
        "frame": 7
      }
    },
    {
      "name": "frame-after-threshold-shrinks-does-not-tick",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 3,
          "status": "Playing",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
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        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 3,
        "status": "Playing",
        "frame": 8
      }
    },
    {
      "name": "frame-at-top-speed-ticks-every-second-frame",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 18,
          "status": "Playing",
          "frame": 1
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 1,
            "y": 0
          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 18,
        "status": "Playing",
        "frame": 2
      }
    },
    {
      "name": "frame-at-top-speed-odd-frame-does-not-tick",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 18,
          "status": "Playing",
          "frame": 2
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 18,
        "status": "Playing",
        "frame": 3
      }
    },
    {
      "name": "frame-tick-can-end-the-game",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 2,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Playing",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 2,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "GameOver",
        "frame": 8
      }
    },
    {
      "name": "frame-when-paused-is-unchanged",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Paused",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
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        "apple": {
          "x": 2,
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        },
        "seed": 0,
        "score": 0,
        "status": "Paused",
        "frame": 7
      }
    },
    {
      "name": "frame-when-game-over-is-unchanged",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "GameOver",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "GameOver",
        "frame": 7
      }
    },
    {
      "name": "frame-when-won-is-unchanged",
      "args": [
        {
          "width": 3,
          "height": 2,
          "snake": [
            {
              "x": 0,
              "y": 0
            }
          ],
          "dir": "Right",
          "nextDir": "Right",
          "apple": {
            "x": 2,
            "y": 1
          },
          "seed": 0,
          "score": 0,
          "status": "Won",
          "frame": 7
        },
        {
          "tag": "Frame"
        }
      ],
      "expected": {
        "width": 3,
        "height": 2,
        "snake": [
          {
            "x": 0,
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          }
        ],
        "dir": "Right",
        "nextDir": "Right",
        "apple": {
          "x": 2,
          "y": 1
        },
        "seed": 0,
        "score": 0,
        "status": "Won",
        "frame": 7
      }
    }
  ]
}