public void compareversions_has_last_two_versions()
{
// Arrange
DateTime createdDate = DateTime.Today.AddDays(-1);
Page page = NewPage("admin");
PageContent v1Content = _pageRepository.AddNewPage(page, "v1 text", "admin", createdDate);
PageContent v2Content = _pageRepository.AddNewPageContentVersion(page, "v2 text", "admin", createdDate.AddHours(1), 2);
PageContent v3Content = _pageRepository.AddNewPageContentVersion(page, "v3 text", "admin", createdDate.AddHours(2), 3);
PageContent v4Content = _pageRepository.AddNewPageContentVersion(page, "v4 text", "admin", createdDate.AddHours(3), 4);
// Act
List<PageViewModel> versionList = _historyService.CompareVersions(v4Content.Id).ToList();
// Assert
Assert.That(versionList.Count, Is.EqualTo(2));
Assert.That(versionList[0].Id, Is.EqualTo(v3Content.Page.Id));
Assert.That(versionList[1].Id, Is.EqualTo(v4Content.Page.Id));
}
/// <summary>
/// Gets a particular version of a page.
/// </summary>
/// <param name="id">The Guid ID for the version.</param>
/// <returns>A <see cref="PageViewModel"/> as the model, which contains the HTML diff
/// output inside the <see cref="PageViewModel.Content"/> property.</returns>
public ActionResult Version(Guid id)
{
MarkupConverter converter = _pageService.GetMarkupConverter();
IList <PageViewModel> bothVersions = _historyService.CompareVersions(id).ToList();
string diffHtml = "";
if (bothVersions[1] != null)
{
string oldVersion = converter.ToHtml(bothVersions[1].Content).Html;
string newVersion = converter.ToHtml(bothVersions[0].Content).Html;
HtmlDiff diff = new HtmlDiff(oldVersion, newVersion);
diffHtml = diff.Build();
}
else
{
diffHtml = converter.ToHtml(bothVersions[0].Content).Html;
}
PageViewModel model = bothVersions[0];
model.Content = diffHtml;
return(View(model));
}