public void GetResourceItem_With_ManyThreads_OnlyCalls_Inner_Once()
{
//Arrange
var inner = new Mock <IContentSource>();
inner.SetupSequence(o => o.GetAllContentItemsAsync("en-US", null))
.ReturnsAsync(() => {
Thread.Sleep(500);
return(new List <ContentItem> {
new ContentItem {
Name = "A", Value = "ValA", Enabled = true
}
});
});
var memoryStore = new MemoryContentSource {
NextSource = inner.Object
};
//Act
Parallel.For(0, 20, t =>
{
for (int i = 0; i < 10; i++)
{
memoryStore.GetContentItem("A", "en-US");
}
});
//Assert
inner.Verify(o => o.GetAllContentItemsAsync("en-US", null), Times.Once);
}
public void GetResourceItem_Called_Twice_OnlyCalls_Inner_Once()
{
//Arrange
var inner = new Mock <IContentSource>();
inner.Setup(o => o.GetAllContentItemsAsync("en-US", null))
.ReturnsAsync(new List <ContentItem> {
new ContentItem {
Name = "A", Value = "ValA", Enabled = true
}
});
var memoryStore = new MemoryContentSource {
NextSource = inner.Object
};
//Act
var item1 = memoryStore.GetContentItem("A", "en-US");
var item2 = memoryStore.GetContentItem("A", "en-US");
//Assert
Assert.Equal("ValA", item1);
Assert.Same(item1, item2);
inner.Verify(o => o.GetAllContentItemsAsync("en-US", null), Times.Once);
}
public void GetResourceItem_With_Exception_Recovers()
{
//Arrange
var inner = new Mock <IContentSource>();
inner.SetupSequence(o => o.GetAllContentItemsAsync("en-US", null))
.Throws(new Exception("Test Error"))
.ReturnsAsync(new List <ContentItem> {
new ContentItem {
Name = "A", Value = "ValA", Enabled = true
}
});
var memoryStore = new MemoryContentSource {
NextSource = inner.Object
};
//Act
Assert.ThrowsAny <Exception>(() => memoryStore.GetContentItem("A", "en-US"));
var item = memoryStore.GetContentItem("A", "en-US");
//Assert
inner.Verify(o => o.GetAllContentItemsAsync("en-US", null), Times.Exactly(2));
}
public async Task Memory_Over_Api_Works()
{
//Arrange
await SetupResourceSet();
//Arrange
var source = new MemoryContentSource {
NextSource = GetApiContentSource()
};
//Assert
Assert.Equal("ValA", source.GetContentItem("A", "en-US"));
Assert.Equal("ValA-es", source.GetContentItem("A", "es"));
Assert.Null(source.GetContentItem("A", "es-MX"));
}
public void GetResourceItem_With_ManyThreads_Errors_Twice_Then_Recovers()
{
//Arrange
var inner = new Mock <IContentSource>();
inner.SetupSequence(o => o.GetAllContentItemsAsync("en-US", null))
.Throws(new Exception("Test Error1"))
.Throws(new Exception("Test Error2"))
.ReturnsAsync(() => {
Thread.Sleep(500);
return(new List <ContentItem> {
new ContentItem {
Name = "A", Value = "ValA", Enabled = true
}
});
});
var memoryStore = new MemoryContentSource {
NextSource = inner.Object
};
//Act
Parallel.For(0, 20, t =>
{
for (int i = 0; i < 10; i++)
{
try
{
memoryStore.GetContentItem("A", "en-US");
}
catch (Exception)
{
}
}
});
//Assert
inner.Verify(o => o.GetAllContentItemsAsync("en-US", null), Times.Exactly(3));
}
