add extjs 6.0.1 sources

[extjs.git] / extjs / packages / core / test / specs / util / Cache.js

describe("Ext.util.Cache", function () {\r
    var evicted = [],\r
        cache;\r
\r
    function dump () {\r
        var a = [],\r
            i = 0;\r
\r
        cache.each(function (key, value) {\r
            a.push(key + '=' + value);\r
            ++i;\r
        });\r
\r
        a.unshift(i);\r
        return a.join(',');\r
    }\r
\r
    beforeEach(function () {\r
        evicted.length = 0;\r
\r
        cache = new Ext.util.Cache({\r
            maxSize: 3,\r
\r
            evict: function (key, value) {\r
                evicted.push('evict:' + key + '=' + value);\r
            },\r
\r
            miss: function (key) {\r
                return '{' + key + '}';\r
            }\r
        });\r
    });\r
\r
    it('should add entries until maxSize', function () {\r
        expect(cache.count).toBe(0);\r
        expect(dump()).toBe('0');\r
\r
        var a = cache.get('a');\r
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        expect(a).toBe('{a}');\r
        expect(cache.count).toBe(1);\r
        expect(dump()).toBe('1,a={a}');\r
\r
        var b = cache.get('b');\r
\r
        expect(b).toBe('{b}');\r
        expect(cache.count).toBe(2);\r
        expect(dump()).toBe('2,b={b},a={a}');\r
\r
        var c = cache.get('c');\r
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        expect(c).toBe('{c}');\r
        expect(cache.count).toBe(3);\r
        expect(dump()).toBe('3,c={c},b={b},a={a}');\r
    });\r
\r
    it('should reorder entries', function () {\r
        var a = cache.get('a');\r
        var b = cache.get('b');\r
        var c = cache.get('c');\r
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        expect(cache.count).toBe(3);\r
        expect(evicted.length).toBe(0);\r
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        var b2 = cache.get('b');\r
\r
        expect(evicted.length).toBe(0);\r
        expect(b2).toBe(b);\r
        expect(cache.count).toBe(3);\r
        expect(dump()).toBe('3,b={b},c={c},a={a}');\r
    });\r
\r
    it('should remove oldest entry after maxSize', function () {\r
        var a = cache.get('a');\r
        var b = cache.get('b');\r
        var c = cache.get('c');\r
        // full\r
\r
        expect(cache.count).toBe(3);\r
        expect(evicted.length).toBe(0);\r
\r
        var d = cache.get('d');\r
\r
        expect(evicted).toEqual([ 'evict:a={a}' ]);\r
        expect(d).toBe('{d}');\r
        expect(cache.count).toBe(3);\r
        expect(dump()).toBe('3,d={d},c={c},b={b}');\r
    });\r
\r
    it('should remove everything on clear', function () {\r
        var a = cache.get('a');\r
        var b = cache.get('b');\r
        var c = cache.get('c');\r
        // full\r
\r
        expect(cache.count).toBe(3);\r
\r
        cache.clear();\r
        expect(cache.count).toBe(0);\r
        expect(dump()).toBe('0');\r
    });\r
\r
    it('should evict everything on clear', function () {\r
        var a = cache.get('a');\r
        var b = cache.get('b');\r
        var c = cache.get('c');\r
        // full\r
\r
        expect(cache.count).toBe(3);\r
\r
        cache.clear();\r
        expect(evicted.length).toBe(3);\r
        expect(evicted).toEqual([ 'evict:c={c}', 'evict:b={b}', 'evict:a={a}' ]);\r
    });\r
\r
    it('should evict everything on destroy', function () {\r
        var a = cache.get('a');\r
        var b = cache.get('b');\r
        var c = cache.get('c');\r
        // full\r
\r
        expect(cache.count).toBe(3);\r
\r
        cache.destroy();\r
        expect(cache.count).toBe(0);\r
        expect(dump()).toBe('0');\r
\r
        expect(evicted.length).toBe(3);\r
        expect(evicted).toEqual([ 'evict:c={c}', 'evict:b={b}', 'evict:a={a}' ]);\r
    });\r
});\r