Added method for build DbSet from IEnumerable.

[sq735]

PR Details

Added a method that allows you to create a DbSet<T> from an IEnumerable<T>.

Description

Often, when performing testing, to create a DbSet<T> from a collection, it was necessary to call the AsQueryable() then BuildMockDbSet() methods. For example:

var users = new List<User>();
DbSet<User> dbSet = users.AsQueryable().BuildMockDbSet();

This improvement allows you to create a DbSet<T> right away. For example:

var users = new List<User>();
DbSet<User> dbSet = users.BuildMockDbSet();

[romantitov]

Hi @sq735. Thanks for your effort. I will include the improvement to the next release.