v / vlib / datatypes / ringbuffer_test.v
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1import datatypes


2


3fn test_push_and_pop() {


4    mut r := datatypes.new_ringbuffer[int](2)


5


6    r.push(3) or { panic(err) }


7    r.push(4) or { panic(err) }


8


9    mut oldest_value := r.pop() or { 0 }


10


11    assert oldest_value == 3


12


13    r.push(5) or { panic(err) }


14


15    oldest_value = r.pop() or { 0 }


16


17    assert oldest_value == 4


18}


19


20fn test_clear_and_empty() {


21    mut r := datatypes.new_ringbuffer[int](4)


22    r.push(3) or { panic(err) }


23    r.push(4) or { panic(err) }


24


25    oldest_value := r.pop() or { 0 }


26    assert oldest_value == 3


27


28    r.clear()


29


30    assert r.is_empty() == true


31}


32


33fn test_capacity_and_is_full() {


34    mut r := datatypes.new_ringbuffer[int](4)


35


36    assert r.capacity() == 4


37


38    r.push(3) or { panic(err) }


39    r.push(4) or { panic(err) }


40    r.push(5) or { panic(err) }


41    r.push(6) or { panic(err) }


42


43    assert r.is_full() == true


44}


45


46fn test_occupied_and_remaining() {


47    mut r := datatypes.new_ringbuffer[int](4)


48


49    r.push(3) or { panic(err) }


50    r.push(4) or { panic(err) }


51


52    assert r.occupied() == r.remaining()


53}


54


55fn test_push_and_pop_many() {


56    mut r := datatypes.new_ringbuffer[int](4)


57    a := [1, 2, 3, 4]


58    r.push_many(a) or { panic(err) }


59


60    assert r.is_full() == true


61


62    b := r.pop_many(4) or { panic(err) }


63


64    assert a == b


65}


66