Python EventSourcer Examples

Example #1

def test_add():
    sourcer = EventSourcer()

    sourcer.add(2)
    sourcer.add(5)

    assert sourcer.value == 7

Example #2

def test_subtract():
    sourcer = EventSourcer()

    sourcer.subtract(2)
    sourcer.subtract(5)

    assert sourcer.value == -7

Example #3

def test_bulk_undo_overstep():
    sourcer = EventSourcer()

    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.subtract(5)
    sourcer.bulk_undo(5)

    assert sourcer.value == 0

Example #4

def test_bulk_undo():
    sourcer = EventSourcer()

    sourcer.add(1)
    sourcer.add(2)
    sourcer.add(3)
    sourcer.add(4)
    sourcer.add(5)
    sourcer.bulk_undo(3)

    assert sourcer.value == 3

Example #5

def test_undo():
    sourcer = EventSourcer()

    sourcer.add(2)
    sourcer.add(2)
    sourcer.add(2)
    sourcer.add(2)
    sourcer.undo()

    assert sourcer.value == 6

Example #6

def test_pow():
    sourcer = EventSourcer()

    sourcer.add(2)
    sourcer.pow(3)
    
    assert sourcer.value == 8

Example #7

def test_multiply():
    sourcer = EventSourcer()

    sourcer.add(2)
    sourcer.multiply(2)
    
    assert sourcer.value == 4

Example #8

def test_divide_big_divisor():
    sourcer = EventSourcer()

    sourcer.add(2)
    sourcer.divide(3)
    
    assert sourcer.value == 0

Example #9

def test_divide_even():
    sourcer = EventSourcer()

    sourcer.add(6)
    sourcer.divide(2)
    
    assert sourcer.value == 3

Example #10

def test_divide_odd():
    sourcer = EventSourcer()

    sourcer.add(5)
    sourcer.divide(2)
    
    assert sourcer.value == 2

Example #11

def test_pow_float():
    sourcer = EventSourcer()

    sourcer.add(4)
    sourcer.pow(0.5)
    
    assert sourcer.value == 2
    assert isinstance(sourcer.value, int)

Example #12

def test_redo_with_no_redo_step():
    sourcer = EventSourcer()

    sourcer.redo()

    assert sourcer.value == 0

Example #13

def test_undo_no_actions():
    sourcer = EventSourcer()

    sourcer.undo()

    assert sourcer.value == 0

Example #14

def test_bulk_redo():
    sourcer = EventSourcer()

    sourcer.add(1)
    sourcer.add(1)
    sourcer.add(1)
    sourcer.add(1)
    sourcer.add(1)
    sourcer.undo()
    sourcer.undo()
    sourcer.undo()
    sourcer.undo()

    sourcer.bulk_redo(4)

    assert sourcer.value == 5

Example #15

def test_redo():
    sourcer = EventSourcer()

    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.undo()
    sourcer.undo()
    sourcer.add(1)
    sourcer.redo()

    assert sourcer.value == 11

Example #16

def test_bulk_redo_overstep():
    sourcer = EventSourcer()

    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.add(5)
    sourcer.undo()
    sourcer.undo()
    sourcer.undo()
    sourcer.bulk_redo(5)

    assert sourcer.value == 25