public async Task CacheResponseAsync_ShouldCache()
{
//Arrange
var cacheKey = "test";
var response = new { randomKey = "randomValue" };
var timeToLive = TimeSpan.FromSeconds(1);
var sut = new ResponseCacheService(_cacheMock, _loggerMock.Object);
//Act
await sut.CacheResponseAsync(cacheKey, response, timeToLive);
//Assert
_cacheMock.SetStringAsyncWasCalled.Should().BeTrue();
}
public async Task CacheResponseAsync_WhenEmptyResponseIsPassed_ShouldNotCache()
{
//Arrange
var cacheKey = "test";
var response = default(object);
var timeToLive = TimeSpan.FromSeconds(0);
var sut = new ResponseCacheService(_cacheMock, _loggerMock.Object);
//Act
await sut.CacheResponseAsync(cacheKey, response, timeToLive);
//Assert
_cacheMock.SetStringAsyncWasCalled.Should().BeFalse();
}
public async Task CacheResponseAsync_WhenEmptyResponseIsPassed_ShouldLogEvent()
{
//Arrange
var cacheKey = "test";
var response = default(object);
var timeToLive = TimeSpan.FromSeconds(0);
var sut = new ResponseCacheService(_cacheMock, _loggerMock.Object);
//Act
await sut.CacheResponseAsync(cacheKey, response, timeToLive);
//Assert
_loggerMock.Verify(x =>
x.Write(LogLevel.Warning, EventCodes.CacheObjectMissingInCacheRequest), Times.Once);
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
var cachedData = await ResponseCacheService.GetCachedData(key);
if (string.IsNullOrWhiteSpace(cachedData))
{
//since background services are singleton and
//DBcontext is scoped we cannot directly inject dbcontext
using (var scope = ScopeFactory.CreateScope())
{
var dbContext = scope.ServiceProvider.GetRequiredService <salesdbContext>();
var dataFromDb = await dbContext.Employees.ToListAsync();
await ResponseCacheService.CacheReponse(key, dataFromDb, TimeSpan.FromSeconds(10));
}
}
await Task.Delay(TimeSpan.FromSeconds(intervalToCacheData));
}
}
