53 lines
1.3 KiB
C#
53 lines
1.3 KiB
C#
using NATS.Server.Auth;
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namespace NATS.Server.Tests;
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public class PermissionLruCacheTests
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{
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[Fact]
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public void Get_returns_none_for_unknown_key()
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{
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var cache = new PermissionLruCache(128);
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cache.TryGet("foo", out _).ShouldBeFalse();
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}
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[Fact]
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public void Set_and_get_returns_value()
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{
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var cache = new PermissionLruCache(128);
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cache.Set("foo", true);
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cache.TryGet("foo", out var v).ShouldBeTrue();
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v.ShouldBeTrue();
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}
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[Fact]
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public void Evicts_oldest_when_full()
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{
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var cache = new PermissionLruCache(3);
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cache.Set("a", true);
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cache.Set("b", true);
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cache.Set("c", true);
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cache.Set("d", true); // evicts "a"
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cache.TryGet("a", out _).ShouldBeFalse();
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cache.TryGet("b", out _).ShouldBeTrue();
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cache.TryGet("d", out _).ShouldBeTrue();
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}
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[Fact]
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public void Get_promotes_to_front()
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{
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var cache = new PermissionLruCache(3);
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cache.Set("a", true);
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cache.Set("b", true);
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cache.Set("c", true);
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// Access "a" to promote it
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cache.TryGet("a", out _);
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cache.Set("d", true); // should evict "b" (oldest untouched)
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cache.TryGet("a", out _).ShouldBeTrue();
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cache.TryGet("b", out _).ShouldBeFalse();
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}
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}
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