add extjs 6.0.1 sources

[extjs.git] / extjs / packages / core / test / specs / dom / GarbageCollector.js

describe("Ext.dom.GarbageCollector", function() {\r
    var skipGarbageCollection;\r
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    beforeEach(function() {\r
        skipGarbageCollection = Ext.dom.Element.prototype.skipGarbageCollection;\r
        Ext.dom.Element.prototype.skipGarbageCollection = false;\r
    });\r
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    afterEach(function() {\r
        Ext.dom.Element.prototype.skipGarbageCollection = skipGarbageCollection;\r
    });\r
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    it("should collect an orphan element", function() {\r
        var el = Ext.get(document.createElement('div')),\r
            id = el.id;\r
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        expect(id in Ext.cache).toBe(true);\r
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        spyOn(el, 'clearListeners').andCallThrough();\r
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        Ext.dom.GarbageCollector.collect();\r
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        expect(el.clearListeners).toHaveBeenCalled();\r
        expect(id in Ext.cache).toBe(false);\r
        \r
        // Element is already destroyed warning is expected\r
        spyOn(Ext.Logger, 'warn');\r
        \r
        el.destroy();\r
    });\r
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    it("should not collect an element that is in the body", function() {\r
        var el = Ext.get(document.createElement('div')),\r
            id = el.id;\r
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        Ext.getBody().appendChild(el);\r
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        spyOn(el, 'clearListeners').andCallThrough();\r
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        Ext.dom.GarbageCollector.collect();\r
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        expect(el.clearListeners).not.toHaveBeenCalled();\r
        expect(id in Ext.cache).toBe(true);\r
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        el.destroy();\r
    });\r
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    (Ext.getDetachedBody ? it : xit)("should not collect an element that is in the detached body", function() {\r
        var el = Ext.get(document.createElement('div')),\r
            id = el.id;\r
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        Ext.getDetachedBody().appendChild(el);\r
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        spyOn(el, 'clearListeners').andCallThrough();\r
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        Ext.dom.GarbageCollector.collect();\r
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        expect(el.clearListeners).not.toHaveBeenCalled();\r
        expect(id in Ext.cache).toBe(true);\r
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        el.destroy();\r
    });\r
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    it("should return the ids of collected elements", function() {\r
        var ids, el2;\r
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        Ext.Element.create({ id: 'one' });\r
        el2 = Ext.getBody().createChild({ id: 'two' });\r
        Ext.Element.create({ tag: 'a', id: 'three' });\r
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        ids = Ext.dom.GarbageCollector.collect();\r
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        expect(ids instanceof Array).toBe(true);\r
        expect(Ext.Array.contains(ids, 'DIV#one')).toBe(true);\r
        expect(Ext.Array.contains(ids, 'DIV#two')).toBe(false);\r
        expect(Ext.Array.contains(ids, 'A#three')).toBe(true);\r
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        el2.destroy();\r
    });\r
});\r