/// <summary>
/// Verifies if a set of packages in the feed have timestamps in a particular order.
/// </summary>
/// <param name="packageIds">An ordered list of package ids. Each package id in the list must have a timestamp in the feed earlier than all package ids after it.</param>
/// <param name="timestampPropertyName">The timestamp property to test the ordering of. For example, "Created" or "LastEdited".</param>
/// <param name="operationStartTimestamp">A timestamp that is before all of the timestamps expected to be found in the feed. This is used in a request to the feed.</param>
/// <param name="packagesListed">Whether packages are listed, used to verify if latest flags are set properly.</param>
private async Task CheckPackageTimestampsInOrder(List <string> packageIds, string timestampPropertyName,
DateTime operationStartTimestamp)
{
var lastTimestamp = DateTime.MinValue;
for (var i = 0; i < PackagesInOrderNumPackages; i++)
{
var packageId = packageIds[i];
TestOutputHelper.WriteLine($"Attempting to check order of package #{i} {timestampPropertyName} timestamp in feed.");
var feedUrl = GetPackagesAppearInFeedInOrderUrl(operationStartTimestamp, timestampPropertyName);
var packageDetails = await _odataHelper.GetPackagePropertiesFromResponse(feedUrl, packageId);
Assert.NotNull(packageDetails);
var newTimestamp = (DateTime?)(packageDetails.ContainsKey(timestampPropertyName)
? packageDetails[timestampPropertyName]
: null);
Assert.True(newTimestamp.HasValue);
Assert.True(newTimestamp.Value > lastTimestamp,
$"Package #{i} was last modified after package #{i - 1} but has an earlier {timestampPropertyName} timestamp ({newTimestamp} should be greater than {lastTimestamp}).");
lastTimestamp = newTimestamp.Value;
var published = packageDetails["Published"] as DateTime?;
var isListed = !published?.Year.Equals(1900);
var isLatest = packageDetails["IsAbsoluteLatestVersion"] as bool?;
var isLatestStable = packageDetails["IsLatestVersion"] as bool?;
Assert.NotNull(isLatest);
Assert.Equal(isLatest, isListed);
Assert.NotNull(isLatestStable);
Assert.Equal(isLatestStable, isListed);
}
}