nim-eth/tests/utp/test_buffer.nim

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# Copyright (c) 2020-2021 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
{.used.}
import
std/sugar,
unittest2,
../../eth/utp/growable_buffer
type TestObj = object
foo: string
suite "Utp ring buffer":
test "Empty buffer":
let buff = GrowableCircularBuffer[int].init(size = 4)
check:
buff.len() == 4
buff.get(0).isNone()
test "Adding elements to buffer":
var buff = GrowableCircularBuffer[int].init(size = 4)
buff.put(11, 11)
buff.put(12, 12)
buff.put(13, 13)
buff.put(14, 14)
check:
buff.get(11) == some(11)
buff.get(12) == some(12)
buff.get(13) == some(13)
buff.get(14) == some(14)
test "Modifing existing element in buffer":
var buff = GrowableCircularBuffer[TestObj].init(size = 4)
let oldText = "test"
let newText = "testChanged"
buff.put(11, TestObj(foo: oldText))
check:
buff.get(11).get() == TestObj(foo: oldText)
buff[11].foo = newText
check:
buff.get(11).get() == TestObj(foo: newText)
test "Checking if element exists and has some properties":
var buff = GrowableCircularBuffer[TestObj].init(size = 4)
let text = "test"
let textIdx = 11
check:
not buff.exists(textIdx, x => x.foo == text)
buff.put(textIdx, TestObj(foo: "old"))
check:
not buff.exists(textIdx, x => x.foo == text)
buff[textIdx].foo = text
check:
buff.exists(textIdx, x => x.foo == text)
test "Deleting elements from buffer":
var buff = GrowableCircularBuffer[int].init(size = 4)
buff.put(11, 11)
check:
buff.get(11) == some(11)
buff.delete(11)
check:
buff.get(11) == none[int]()
test "Adding elements to buffer while ensuring proper size":
var buff = GrowableCircularBuffer[int].init(size = 4)
buff.put(11, 11)
buff.put(12, 12)
buff.put(13, 13)
buff.put(14, 14)
# next element will be 5 in buffer, so it has index equal to 4
buff.ensureSize(15, 4)
buff.put(15, 15)
check:
# it growed to next power of two
buff.len() == 8
buff.get(11) == some(11)
buff.get(12) == some(12)
buff.get(13) == some(13)
buff.get(14) == some(14)
buff.get(15) == some(15)
test "Adding out of order elements to buffer while ensuring proper size":
var buff = GrowableCircularBuffer[int].init(size = 4)
buff.put(11, 11)
buff.put(12, 12)
buff.put(13, 13)
buff.put(14, 14)
# element with nr 17 will be on needed on index 6
buff.ensureSize(17, 6)
buff.put(17, 17)
check:
# it growed to next power of two
buff.len() == 8
buff.get(11) == some(11)
buff.get(12) == some(12)
buff.get(13) == some(13)
buff.get(14) == some(14)
# elements 15 and 16 are not present yet
buff.get(15) == none[int]()
buff.get(16) == none[int]()
buff.get(17) == some(17)