test_cases:
  # GHOST chooses b3 with the heaviest weight
  - blocks:
      - id: 'b0'
        parent: 'b0'
      - id: 'b1'
        parent: 'b0'
      - id: 'b2'
        parent: 'b1'
      - id: 'b3'
        parent: 'b1'
    weights:
      b0: 0
      b1: 0
      b2: 5
      b3: 10
    head: 'b3'
  # GHOST chooses b1 with the heaviest weight
  - blocks:
      - id: 'b0'
        parent: 'b0'
      - id: 'b1'
        parent: 'b0'
      - id: 'b2'
        parent: 'b0'
      - id: 'b3'
        parent: 'b0'
    weights:
      b1: 5
      b2: 4
      b3: 3
    head: 'b1'
  # Equal weights children, GHOST chooses b2 because it is higher lexicographically than b3
  - blocks:
      - id: 'b0'
        parent: 'b0'
      - id: 'b1'
        parent: 'b0'
      - id: 'b2'
        parent: 'b0'
      - id: 'b3'
        parent: 'b0'
    weights:
      b1: 5
      b2: 6
      b3: 6
    head: 'b2'
  # Equal weights children, GHOST chooses b2 because it is higher lexicographically than b1
  - blocks:
      - id: 'b0'
        parent: 'b0'
      - id: 'b1'
        parent: 'b0'
      - id: 'b2'
        parent: 'b0'
    weights:
      b1: 0
      b2: 0
    head: 'b2'