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bitfasterbitfaster
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volatile (#42)
* volatile * banish tabs
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10 files changed

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‎BitFaster.Caching.UnitTests/Lru/ClassicLruTests.cs

Lines changed: 161 additions & 161 deletions
Original file line numberDiff line numberDiff line change
@@ -9,12 +9,12 @@
99

1010
namespace BitFaster.Caching.UnitTests.Lru
1111
{
12-
public class ClassicLruTests
13-
{
14-
private const int capacity = 3;
12+
public class ClassicLruTests
13+
{
14+
private const int capacity = 3;
1515

16-
private ClassicLru<int, string> lru = new ClassicLru<int, string>(1, capacity, EqualityComparer<int>.Default);
17-
ValueFactory valueFactory = new ValueFactory();
16+
private ClassicLru<int, string> lru = new ClassicLru<int, string>(1, capacity, EqualityComparer<int>.Default);
17+
ValueFactory valueFactory = new ValueFactory();
1818

1919
[Fact]
2020
public void WhenConcurrencyIsLessThan1CtorThrows()
@@ -49,137 +49,137 @@ public void ConstructAddAndRetrieveWithDefaultCtorReturnsValue()
4949
}
5050

5151
[Fact]
52-
public void WhenItemIsAddedCountIsCorrect()
53-
{
54-
lru.Count.Should().Be(0);
55-
lru.GetOrAdd(1, valueFactory.Create);
56-
lru.Count.Should().Be(1);
57-
}
58-
59-
[Fact]
60-
public void WhenItemExistsTryGetReturnsValueAndTrue()
61-
{
62-
lru.GetOrAdd(1, valueFactory.Create);
63-
bool result = lru.TryGet(1, out var value);
64-
65-
result.Should().Be(true);
66-
value.Should().Be("1");
67-
}
68-
69-
[Fact]
70-
public void WhenItemDoesNotExistTryGetReturnsNullAndFalse()
71-
{
72-
lru.GetOrAdd(1, valueFactory.Create);
73-
bool result = lru.TryGet(2, out var value);
74-
75-
result.Should().Be(false);
76-
value.Should().BeNull();
77-
}
78-
79-
[Fact]
80-
public void WhenItemIsAddedThenRetrievedHitRatioIsHalf()
81-
{
82-
lru.GetOrAdd(1, valueFactory.Create);
83-
bool result = lru.TryGet(1, out var value);
84-
85-
lru.HitRatio.Should().Be(0.5);
86-
}
87-
88-
[Fact]
89-
public void WhenKeyIsRequestedItIsCreatedAndCached()
90-
{
91-
var result1 = lru.GetOrAdd(1, valueFactory.Create);
92-
var result2 = lru.GetOrAdd(1, valueFactory.Create);
93-
94-
valueFactory.timesCalled.Should().Be(1);
95-
result1.Should().Be(result2);
96-
}
97-
98-
[Fact]
99-
public async Task WhenKeyIsRequesteItIsCreatedAndCachedAsync()
100-
{
101-
var result1 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
102-
var result2 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
103-
104-
valueFactory.timesCalled.Should().Be(1);
105-
result1.Should().Be(result2);
106-
}
107-
108-
[Fact]
109-
public void WhenDifferentKeysAreRequestedValueIsCreatedForEach()
110-
{
111-
var result1 = lru.GetOrAdd(1, valueFactory.Create);
112-
var result2 = lru.GetOrAdd(2, valueFactory.Create);
113-
114-
valueFactory.timesCalled.Should().Be(2);
115-
116-
result1.Should().Be("1");
117-
result2.Should().Be("2");
118-
}
119-
120-
[Fact]
121-
public async Task WhenDifferentKeysAreRequesteValueIsCreatedForEachAsync()
122-
{
123-
var result1 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
124-
var result2 = await lru.GetOrAddAsync(2, valueFactory.CreateAsync).ConfigureAwait(false);
125-
126-
valueFactory.timesCalled.Should().Be(2);
127-
128-
result1.Should().Be("1");
129-
result2.Should().Be("2");
130-
}
131-
132-
[Fact]
133-
public void WhenMoreKeysRequestedThanCapacityCountDoesNotIncrease()
134-
{
135-
for (int i = 0; i < capacity + 1; i++)
136-
{
137-
lru.GetOrAdd(i, valueFactory.Create);
138-
}
139-
140-
lru.Count.Should().Be(capacity);
141-
valueFactory.timesCalled.Should().Be(capacity + 1);
142-
}
143-
144-
[Fact]
145-
public async Task WhenMoreKeysRequestedThanCapacityCountDoesNotIncreaseAsync()
146-
{
147-
for (int i = 0; i < capacity + 1; i++)
148-
{
149-
await lru.GetOrAddAsync(i, valueFactory.CreateAsync);
150-
}
151-
152-
lru.Count.Should().Be(capacity);
153-
valueFactory.timesCalled.Should().Be(capacity + 1);
154-
}
155-
156-
[Fact]
157-
public void WhenMoreKeysRequestedThanCapacityOldestItemIsEvicted()
158-
{
159-
// request 10 items, LRU is now full
160-
for (int i = 0; i < capacity; i++)
161-
{
162-
lru.GetOrAdd(i, valueFactory.Create);
163-
}
164-
165-
valueFactory.timesCalled.Should().Be(capacity);
166-
167-
// request 0, now item 1 is to be evicted
168-
lru.GetOrAdd(0, valueFactory.Create);
169-
valueFactory.timesCalled.Should().Be(capacity);
170-
171-
// request next item after last, verify value factory was called
172-
lru.GetOrAdd(capacity, valueFactory.Create);
173-
valueFactory.timesCalled.Should().Be(capacity + 1);
174-
175-
// request 0, verify value factory not called
176-
lru.GetOrAdd(0, valueFactory.Create);
177-
valueFactory.timesCalled.Should().Be(capacity + 1);
178-
179-
// request 1, verify value factory is called (and it was therefore not cached)
180-
lru.GetOrAdd(1, valueFactory.Create);
181-
valueFactory.timesCalled.Should().Be(capacity + 2);
182-
}
52+
public void WhenItemIsAddedCountIsCorrect()
53+
{
54+
lru.Count.Should().Be(0);
55+
lru.GetOrAdd(1, valueFactory.Create);
56+
lru.Count.Should().Be(1);
57+
}
58+
59+
[Fact]
60+
public void WhenItemExistsTryGetReturnsValueAndTrue()
61+
{
62+
lru.GetOrAdd(1, valueFactory.Create);
63+
bool result = lru.TryGet(1, out var value);
64+
65+
result.Should().Be(true);
66+
value.Should().Be("1");
67+
}
68+
69+
[Fact]
70+
public void WhenItemDoesNotExistTryGetReturnsNullAndFalse()
71+
{
72+
lru.GetOrAdd(1, valueFactory.Create);
73+
bool result = lru.TryGet(2, out var value);
74+
75+
result.Should().Be(false);
76+
value.Should().BeNull();
77+
}
78+
79+
[Fact]
80+
public void WhenItemIsAddedThenRetrievedHitRatioIsHalf()
81+
{
82+
lru.GetOrAdd(1, valueFactory.Create);
83+
bool result = lru.TryGet(1, out var value);
84+
85+
lru.HitRatio.Should().Be(0.5);
86+
}
87+
88+
[Fact]
89+
public void WhenKeyIsRequestedItIsCreatedAndCached()
90+
{
91+
var result1 = lru.GetOrAdd(1, valueFactory.Create);
92+
var result2 = lru.GetOrAdd(1, valueFactory.Create);
93+
94+
valueFactory.timesCalled.Should().Be(1);
95+
result1.Should().Be(result2);
96+
}
97+
98+
[Fact]
99+
public async Task WhenKeyIsRequesteItIsCreatedAndCachedAsync()
100+
{
101+
var result1 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
102+
var result2 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
103+
104+
valueFactory.timesCalled.Should().Be(1);
105+
result1.Should().Be(result2);
106+
}
107+
108+
[Fact]
109+
public void WhenDifferentKeysAreRequestedValueIsCreatedForEach()
110+
{
111+
var result1 = lru.GetOrAdd(1, valueFactory.Create);
112+
var result2 = lru.GetOrAdd(2, valueFactory.Create);
113+
114+
valueFactory.timesCalled.Should().Be(2);
115+
116+
result1.Should().Be("1");
117+
result2.Should().Be("2");
118+
}
119+
120+
[Fact]
121+
public async Task WhenDifferentKeysAreRequesteValueIsCreatedForEachAsync()
122+
{
123+
var result1 = await lru.GetOrAddAsync(1, valueFactory.CreateAsync).ConfigureAwait(false);
124+
var result2 = await lru.GetOrAddAsync(2, valueFactory.CreateAsync).ConfigureAwait(false);
125+
126+
valueFactory.timesCalled.Should().Be(2);
127+
128+
result1.Should().Be("1");
129+
result2.Should().Be("2");
130+
}
131+
132+
[Fact]
133+
public void WhenMoreKeysRequestedThanCapacityCountDoesNotIncrease()
134+
{
135+
for (int i = 0; i < capacity + 1; i++)
136+
{
137+
lru.GetOrAdd(i, valueFactory.Create);
138+
}
139+
140+
lru.Count.Should().Be(capacity);
141+
valueFactory.timesCalled.Should().Be(capacity + 1);
142+
}
143+
144+
[Fact]
145+
public async Task WhenMoreKeysRequestedThanCapacityCountDoesNotIncreaseAsync()
146+
{
147+
for (int i = 0; i < capacity + 1; i++)
148+
{
149+
await lru.GetOrAddAsync(i, valueFactory.CreateAsync);
150+
}
151+
152+
lru.Count.Should().Be(capacity);
153+
valueFactory.timesCalled.Should().Be(capacity + 1);
154+
}
155+
156+
[Fact]
157+
public void WhenMoreKeysRequestedThanCapacityOldestItemIsEvicted()
158+
{
159+
// request 10 items, LRU is now full
160+
for (int i = 0; i < capacity; i++)
161+
{
162+
lru.GetOrAdd(i, valueFactory.Create);
163+
}
164+
165+
valueFactory.timesCalled.Should().Be(capacity);
166+
167+
// request 0, now item 1 is to be evicted
168+
lru.GetOrAdd(0, valueFactory.Create);
169+
valueFactory.timesCalled.Should().Be(capacity);
170+
171+
// request next item after last, verify value factory was called
172+
lru.GetOrAdd(capacity, valueFactory.Create);
173+
valueFactory.timesCalled.Should().Be(capacity + 1);
174+
175+
// request 0, verify value factory not called
176+
lru.GetOrAdd(0, valueFactory.Create);
177+
valueFactory.timesCalled.Should().Be(capacity + 1);
178+
179+
// request 1, verify value factory is called (and it was therefore not cached)
180+
lru.GetOrAdd(1, valueFactory.Create);
181+
valueFactory.timesCalled.Should().Be(capacity + 2);
182+
}
183183

184184
[Fact]
185185
public void WhenValueExpiresItIsDisposed()
@@ -212,31 +212,31 @@ public async Task WhenValueExpiresAsyncItIsDisposed()
212212
}
213213

214214
[Fact]
215-
public void WhenKeyDoesNotExistTryGetReturnsFalse()
216-
{
217-
lru.GetOrAdd(1, valueFactory.Create);
215+
public void WhenKeyDoesNotExistTryGetReturnsFalse()
216+
{
217+
lru.GetOrAdd(1, valueFactory.Create);
218218

219-
lru.TryGet(2, out var result).Should().Be(false);
220-
}
219+
lru.TryGet(2, out var result).Should().Be(false);
220+
}
221221

222-
[Fact]
223-
public void WhenKeyExistsTryGetReturnsTrueAndOutValueIsCorrect()
224-
{
225-
lru.GetOrAdd(1, valueFactory.Create);
222+
[Fact]
223+
public void WhenKeyExistsTryGetReturnsTrueAndOutValueIsCorrect()
224+
{
225+
lru.GetOrAdd(1, valueFactory.Create);
226226

227-
bool result = lru.TryGet(1, out var value);
228-
result.Should().Be(true);
229-
value.Should().Be("1");
230-
}
227+
bool result = lru.TryGet(1, out var value);
228+
result.Should().Be(true);
229+
value.Should().Be("1");
230+
}
231231

232-
[Fact]
233-
public void WhenKeyExistsTryRemoveRemovesItemAndReturnsTrue()
232+
[Fact]
233+
public void WhenKeyExistsTryRemoveRemovesItemAndReturnsTrue()
234234
{
235-
lru.GetOrAdd(1, valueFactory.Create);
235+
lru.GetOrAdd(1, valueFactory.Create);
236236

237-
lru.TryRemove(1).Should().BeTrue();
238-
lru.TryGet(1, out var value).Should().BeFalse();
239-
}
237+
lru.TryRemove(1).Should().BeTrue();
238+
lru.TryGet(1, out var value).Should().BeFalse();
239+
}
240240

241241
[Fact]
242242
public void WhenItemIsRemovedItIsDisposed()
@@ -251,11 +251,11 @@ public void WhenItemIsRemovedItIsDisposed()
251251
}
252252

253253
[Fact]
254-
public void WhenKeyDoesNotExistTryRemoveReturnsFalse()
255-
{
256-
lru.GetOrAdd(1, valueFactory.Create);
254+
public void WhenKeyDoesNotExistTryRemoveReturnsFalse()
255+
{
256+
lru.GetOrAdd(1, valueFactory.Create);
257257

258-
lru.TryRemove(2).Should().BeFalse();
259-
}
260-
}
258+
lru.TryRemove(2).Should().BeFalse();
259+
}
260+
}
261261
}

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