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102 lines
2.4 KiB
102 lines
2.4 KiB
using System;
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using System.Collections.Generic;
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using System.Threading;
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using FluentAssertions;
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using NUnit.Framework;
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using NzbDrone.Common.Cache;
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namespace NzbDrone.Common.Test.CacheTests
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{
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[TestFixture]
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public class CachedDictionaryFixture
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{
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private CachedDictionary<string> _cachedString;
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private DictionaryWorker _worker;
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[SetUp]
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public void SetUp()
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{
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_worker = new DictionaryWorker();
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_cachedString = new CachedDictionary<string>(_worker.GetDict, TimeSpan.FromMilliseconds(100));
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}
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[Test]
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public void should_not_fetch_on_create()
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{
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_worker.HitCount.Should().Be(0);
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}
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[Test]
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public void should_fetch_on_first_call()
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{
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var result = _cachedString.Get("Hi");
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_worker.HitCount.Should().Be(1);
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result.Should().Be("Value");
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}
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[Test]
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public void should_fetch_once()
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{
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var result1 = _cachedString.Get("Hi");
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var result2 = _cachedString.Get("HitCount");
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_worker.HitCount.Should().Be(1);
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}
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[Test]
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public void should_auto_refresh_after_lifetime()
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{
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var result1 = _cachedString.Get("Hi");
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Thread.Sleep(200);
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var result2 = _cachedString.Get("Hi");
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_worker.HitCount.Should().Be(2);
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}
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[Test]
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public void should_refresh_early_if_requested()
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{
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var result1 = _cachedString.Get("Hi");
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Thread.Sleep(10);
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_cachedString.RefreshIfExpired(TimeSpan.FromMilliseconds(1));
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var result2 = _cachedString.Get("Hi");
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_worker.HitCount.Should().Be(2);
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}
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[Test]
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public void should_not_refresh_early_if_not_expired()
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{
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var result1 = _cachedString.Get("Hi");
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_cachedString.RefreshIfExpired(TimeSpan.FromMilliseconds(50));
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var result2 = _cachedString.Get("Hi");
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_worker.HitCount.Should().Be(1);
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}
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}
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public class DictionaryWorker
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{
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public int HitCount { get; private set; }
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public Dictionary<string, string> GetDict()
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{
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HitCount++;
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var result = new Dictionary<string, string>();
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result["Hi"] = "Value";
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result["HitCount"] = "Hit count is " + HitCount;
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return result;
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}
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}
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} |