/script-kiddie/002_script_kiddie/script-kiddie/node_modules/lru-cache/test/serialize.js |
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var test = require('tap').test |
var LRU = require('../') |
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test('dump', function (t) { |
var cache = new LRU() |
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t.equal(cache.dump().length, 0, "nothing in dump for empty cache") |
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cache.set("a", "A") |
cache.set("b", "B") |
t.deepEqual(cache.dump(), [ |
{ k: "b", v: "B", e: 0 }, |
{ k: "a", v: "A", e: 0 } |
]) |
|
cache.set(123, 456) |
t.deepEqual(cache.dump(), [ |
{ k: 123, v: 456, e: 0 }, |
{ k: "b", v: "B", e: 0 }, |
{ k: "a", v: "A", e: 0 }, |
]) |
cache.del(123) |
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cache.set("a", "A"); |
t.deepEqual(cache.dump(), [ |
{ k: "a", v: "A", e: 0 }, |
{ k: "b", v: "B", e: 0 } |
]) |
|
cache.get("b"); |
t.deepEqual(cache.dump(), [ |
{ k: "b", v: "B", e: 0 }, |
{ k: "a", v: "A", e: 0 } |
]) |
|
cache.del("a"); |
t.deepEqual(cache.dump(), [ |
{ k: "b", v: "B", e: 0 } |
]) |
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t.end() |
}) |
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test("do not dump stale items", function(t) { |
var cache = new LRU({ |
max: 5, |
maxAge: 50 |
}) |
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//expires at 50 |
cache.set("a", "A") |
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setTimeout(function () { |
//expires at 75 |
cache.set("b", "B") |
var s = cache.dump() |
t.equal(s.length, 2) |
t.equal(s[0].k, "b") |
t.equal(s[1].k, "a") |
}, 25) |
|
setTimeout(function () { |
//expires at 110 |
cache.set("c", "C") |
var s = cache.dump() |
t.equal(s.length, 2) |
t.equal(s[0].k, "c") |
t.equal(s[1].k, "b") |
}, 60) |
|
setTimeout(function () { |
//expires at 130 |
cache.set("d", "D", 40) |
var s = cache.dump() |
t.equal(s.length, 2) |
t.equal(s[0].k, "d") |
t.equal(s[1].k, "c") |
}, 90) |
|
setTimeout(function () { |
var s = cache.dump() |
t.equal(s.length, 1) |
t.equal(s[0].k, "d") |
}, 120) |
|
setTimeout(function () { |
var s = cache.dump() |
t.deepEqual(s, []) |
t.end() |
}, 155) |
}) |
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test("load basic cache", function(t) { |
var cache = new LRU(), |
copy = new LRU() |
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cache.set("a", "A") |
cache.set("b", "B") |
cache.set(123, 456) |
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copy.load(cache.dump()) |
t.deepEquals(cache.dump(), copy.dump()) |
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t.end() |
}) |
|
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test("load staled cache", function(t) { |
var cache = new LRU({maxAge: 50}), |
copy = new LRU({maxAge: 50}), |
arr |
|
//expires at 50 |
cache.set("a", "A") |
setTimeout(function () { |
//expires at 80 |
cache.set("b", "B") |
arr = cache.dump() |
t.equal(arr.length, 2) |
}, 30) |
|
setTimeout(function () { |
copy.load(arr) |
t.equal(copy.get("a"), undefined) |
t.equal(copy.get("b"), "B") |
}, 60) |
|
setTimeout(function () { |
t.equal(copy.get("b"), undefined) |
t.end() |
}, 90) |
}) |
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test("load to other size cache", function(t) { |
var cache = new LRU({max: 2}), |
copy = new LRU({max: 1}) |
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cache.set("a", "A") |
cache.set("b", "B") |
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copy.load(cache.dump()) |
t.equal(copy.get("a"), undefined) |
t.equal(copy.get("b"), "B") |
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//update the last read from original cache |
cache.get("a") |
copy.load(cache.dump()) |
t.equal(copy.get("a"), "A") |
t.equal(copy.get("b"), undefined) |
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t.end() |
}) |
|
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test("load to other age cache", function(t) { |
var cache = new LRU({maxAge: 50}), |
aged = new LRU({maxAge: 100}), |
simple = new LRU(), |
arr, |
expired |
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//created at 0 |
//a would be valid till 0 + 50 |
cache.set("a", "A") |
setTimeout(function () { |
//created at 20 |
//b would be valid till 20 + 50 |
cache.set("b", "B") |
//b would be valid till 20 + 70 |
cache.set("c", "C", 70) |
arr = cache.dump() |
t.equal(arr.length, 3) |
}, 20) |
|
setTimeout(function () { |
t.equal(cache.get("a"), undefined) |
t.equal(cache.get("b"), "B") |
t.equal(cache.get("c"), "C") |
|
aged.load(arr) |
t.equal(aged.get("a"), undefined) |
t.equal(aged.get("b"), "B") |
t.equal(aged.get("c"), "C") |
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simple.load(arr) |
t.equal(simple.get("a"), undefined) |
t.equal(simple.get("b"), "B") |
t.equal(simple.get("c"), "C") |
}, 60) |
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setTimeout(function () { |
t.equal(cache.get("a"), undefined) |
t.equal(cache.get("b"), undefined) |
t.equal(cache.get("c"), "C") |
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aged.load(arr) |
t.equal(aged.get("a"), undefined) |
t.equal(aged.get("b"), undefined) |
t.equal(aged.get("c"), "C") |
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simple.load(arr) |
t.equal(simple.get("a"), undefined) |
t.equal(simple.get("b"), undefined) |
t.equal(simple.get("c"), "C") |
}, 80) |
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setTimeout(function () { |
t.equal(cache.get("a"), undefined) |
t.equal(cache.get("b"), undefined) |
t.equal(cache.get("c"), undefined) |
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aged.load(arr) |
t.equal(aged.get("a"), undefined) |
t.equal(aged.get("b"), undefined) |
t.equal(aged.get("c"), undefined) |
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simple.load(arr) |
t.equal(simple.get("a"), undefined) |
t.equal(simple.get("b"), undefined) |
t.equal(simple.get("c"), undefined) |
t.end() |
}, 100) |
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}) |