Writing Specifications
Specifications are used to retrieve information. You write them using LINQ. Given a starting point, the specification finds all facts that match a set of conditions.
var postsInSite = Given<Site>.Match((site, facts) =>
from post in facts.OfType<Post>()
where post.site == site
select post
);Call the jinagaClient.Query method to retrieve the facts.
var posts = await jinagaClient.Query(postsInSite, site);If you prefer LINQ method syntax, you can write the specification like this.
var postsInSite = Given<Site>.Match((site, facts) =>
facts.OfType<Post>()
.Where(post => post.site == site)
);You can even pass the condition lambda into the OfType method.
var postsInSite = Given<Site>.Match((site, facts) =>
facts.OfType<Post>(post => post.site == site)
);