Radarr/NzbDrone.Common.Test/CacheTests/CachedFixture.cs

117 lines
2.7 KiB
C#

using System;
using System.Threading;
using FluentAssertions;
using NUnit.Framework;
using NzbDrone.Common.Cache;
namespace NzbDrone.Common.Test.CacheTests
{
[TestFixture]
public class CachedFixture
{
private Cached<string> _cachedString = new Cached<string>();
private Worker _worker;
[SetUp]
public void SetUp()
{
_cachedString = new Cached<string>();
_worker = new Worker();
}
[Test]
public void should_call_function_once()
{
_cachedString.Get("Test", _worker.GetString);
_cachedString.Get("Test", _worker.GetString);
_worker.HitCount.Should().Be(1);
}
[Test]
public void multiple_calls_should_return_same_result()
{
var first = _cachedString.Get("Test", _worker.GetString);
var second = _cachedString.Get("Test", _worker.GetString);
first.Should().Be(second);
}
[Test]
public void should_be_able_to_update_key()
{
_cachedString.Set("Key", "Old");
_cachedString.Set("Key", "New");
_cachedString.Find("Key").Should().Be("New");
}
[Test]
public void should_be_able_to_remove_key()
{
_cachedString.Set("Key", "Value");
_cachedString.Remove("Key");
_cachedString.Find("Key").Should().BeNull();
}
[Test]
public void should_be_able_to_remove_non_existing_key()
{
_cachedString.Remove("Key");
}
[Test]
public void should_store_null()
{
int hitCount = 0;
for (int i = 0; i < 10; i++)
{
_cachedString.Get("key", () =>
{
hitCount++;
return null;
});
}
hitCount.Should().Be(1);
}
[Test]
public void should_honor_ttl()
{
int hitCount = 0;
_cachedString = new Cached<string>();
for (int i = 0; i < 100; i++)
{
_cachedString.Get("key", () =>
{
hitCount++;
return null;
}, TimeSpan.FromMilliseconds(300));
Thread.Sleep(10);
}
hitCount.Should().BeInRange(3, 6);
}
}
public class Worker
{
public int HitCount { get; private set; }
public string GetString()
{
HitCount++;
return "Hit count is " + HitCount;
}
}
}