public void Add(string key, string data, TimeSpan expireIn, string eTag = null)
{
key = UrlEncodeString(key);
if (string.IsNullOrWhiteSpace(eTag))
{
eTag = null;
}
var expiryDate = DateTime.Now.Add(expireIn);
var cachedResponse = new CachedResponse(data, expiryDate, eTag);
var serizlizedReponse = JsonConvert.SerializeObject(cachedResponse);
string formattedResponse = JToken.Parse(serizlizedReponse).ToString(Formatting.Indented);
var cachedItemPath = Path.Combine(CacheLocation, key);
try
{
File.WriteAllBytes(cachedItemPath, Encoding.ASCII.GetBytes(formattedResponse));
}
catch (Exception ex)
{
throw new CacheAccessException("An error occured when accessing the cache. More detail can be found in the inner exception.", ex);
}
}
public void IsExpired_ReturnsTrue_WhenObject_IsConstructed_WithExpiryDate_ThatIs_InThePast()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now.AddHours(-1));
//Assert
Assert.True(sut.IsExpired);
}
public void Content_ReturnsCorrectValue_FollowingObjectConstruction()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now);
//Assert
Assert.Equal("Test Content", sut.Content);
}
public void HasEtag_ReturnsTrue_WhenEtag_IsSet_DuringConstruction()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now, "my-test-etag");
//Assert
Assert.True(sut.HasEtag);
}
public void HasEtag_ReturnsFalse_WhenNoEtag_IsSet_DuringConstruction()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now);
//Assert
Assert.False(sut.HasEtag);
}
public void Etag_ReturnsCorrectValue_GivenValue_At_Construction()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now, "my-test-etag");
//Assert
Assert.Equal("my-test-etag", sut.Etag);
}
public void Etag_ReturnsNull_GivenNoValue_At_Construction()
{
//Arrange
var sut = new CachedResponse("Test Content", DateTime.Now);
//Assert
Assert.Null(sut.Etag);
}
public void ExpiryDate_ReturnsCorrectValue_FollowingObjectConstruction()
{
//Arrange
var sut = new CachedResponse("Test Content", new DateTime(2018, 1, 10, 16, 15, 32));
//Assert
Assert.Equal(new DateTime(2018, 1, 10, 16, 15, 32), sut.ExpiryDate);
}
public void GetExpiration_ReturnsCorrectDate_GivenUrl_AsKey()
{
//Arrange
var expiryDate = DateTime.Now.AddDays(15);
var cachedResponse = new CachedResponse("my-test-cached-response", expiryDate);
var serializedResponse = JsonConvert.SerializeObject(cachedResponse);
var cachedItem = File.Create(Path.Combine(_sut.CacheLocation, WebUtility.UrlEncode("my-test-cached-item")));
cachedItem.Write(Encoding.ASCII.GetBytes(serializedResponse));
cachedItem.Close();
//Act
var result = _sut.GetExpiration("my-test-cached-item");
//Assert
Assert.Equal(result, expiryDate);
}