desc: Tests for the basic usage of the multiplication operation
tests:

    - cd: r.expr(1).mul(2)
      py:
        - r.expr(1) * 2
        - 1 * r.expr(2)
        - r.expr(1).mul(2)
      rb:
        - (r 1) * 2
        - r(1).mul(2)
        - 1 * (r 2)
      ot: 2

    - py: r.expr(-1) * -1
      js: r(-1).mul(-1)
      rb: (r -1) * -1
      ot: 1

    - cd: r.expr(1.5).mul(4.5)
      py: r.expr(1.5) * 4.5
      rb: (r 1.5) * 4.5
      ot: 6.75

    - py: r.expr([1,2,3]) * 3
      js: r([1,2,3]).mul(3)
      rb: (r [1,2,3]) * 3
      ot: [1,2,3,1,2,3,1,2,3]

    - cd: r.expr(1).mul(2,3,4,5)
      ot: 120

    - cd: r(2).mul([1,2,3], 2)
      py: # this form does not work in Python
      ot: [1,2,3,1,2,3,1,2,3,1,2,3]

    - cd: r([1,2,3]).mul(2, 2)
      py: # this form does not work in Python
      ot: [1,2,3,1,2,3,1,2,3,1,2,3]

    - cd: r(2).mul(2, [1,2,3])
      py: # this form does not work in Python
      ot: [1,2,3,1,2,3,1,2,3,1,2,3]

    # Type errors
    - py: r.expr('a') * 0.8
      cd: r('a').mul(0.8)
      ot: err('ReqlQueryLogicError', 'Expected type NUMBER but found STRING.', [0])

    - py: r.expr(1) * 'a'
      cd: r(1).mul('a')
      ot: err('ReqlQueryLogicError', 'Expected type NUMBER but found STRING.', [1])

    - py: r.expr('b') * 'a'
      cd: r('b').mul('a')
      ot: err('ReqlQueryLogicError', 'Expected type NUMBER but found STRING.', [0])

    - py: r.expr([]) * 1.5
      cd: r([]).mul(1.5)
      ot: err('ReqlQueryLogicError', 'Number not an integer: 1.5', [0])