mirror of
https://github.com/pulsar-edit/pulsar.git
synced 2024-11-10 10:17:11 +03:00
56 lines
2.0 KiB
CoffeeScript
56 lines
2.0 KiB
CoffeeScript
DOMElementPool = require '../src/dom-element-pool'
|
|
|
|
describe "DOMElementPool", ->
|
|
domElementPool = null
|
|
|
|
beforeEach ->
|
|
domElementPool = new DOMElementPool
|
|
|
|
it "builds DOM nodes, recycling them when they are freed", ->
|
|
[div, span1, span2, span3, span4, span5] = elements = [
|
|
domElementPool.build("div")
|
|
domElementPool.build("span")
|
|
domElementPool.build("span")
|
|
domElementPool.build("span")
|
|
domElementPool.build("span")
|
|
domElementPool.build("span")
|
|
]
|
|
|
|
div.appendChild(span1)
|
|
span1.appendChild(span2)
|
|
div.appendChild(span3)
|
|
span3.appendChild(span4)
|
|
|
|
domElementPool.freeElementAndDescendants(div)
|
|
domElementPool.freeElementAndDescendants(span5)
|
|
|
|
expect(elements).toContain(domElementPool.build("div"))
|
|
expect(elements).toContain(domElementPool.build("span"))
|
|
expect(elements).toContain(domElementPool.build("span"))
|
|
expect(elements).toContain(domElementPool.build("span"))
|
|
expect(elements).toContain(domElementPool.build("span"))
|
|
expect(elements).toContain(domElementPool.build("span"))
|
|
|
|
expect(elements).not.toContain(domElementPool.build("div"))
|
|
expect(elements).not.toContain(domElementPool.build("span"))
|
|
|
|
it "forgets free nodes after being cleared", ->
|
|
span = domElementPool.build("span")
|
|
div = domElementPool.build("div")
|
|
domElementPool.freeElementAndDescendants(span)
|
|
domElementPool.freeElementAndDescendants(div)
|
|
|
|
domElementPool.clear()
|
|
|
|
expect(domElementPool.build("span")).not.toBe(span)
|
|
expect(domElementPool.build("div")).not.toBe(div)
|
|
|
|
it "throws an error when trying to free the same node twice", ->
|
|
div = domElementPool.build("div")
|
|
domElementPool.freeElementAndDescendants(div)
|
|
expect(-> domElementPool.freeElementAndDescendants(div)).toThrow()
|
|
|
|
it "throws an error when trying to free an invalid element", ->
|
|
expect(-> domElementPool.freeElementAndDescendants(null)).toThrow()
|
|
expect(-> domElementPool.freeElementAndDescendants(undefined)).toThrow()
|