public void Update_explicit_value_in_computed_column()
{
using (var testStore = SqlServerTestStore.CreateInitialized(DatabaseName))
{
using (var context = new BlogContextComputedColumn(testStore.Name))
{
context.Database.EnsureCreated();
context.Add(new FullNameBlog {
FirstName = "One", LastName = "Unicorn"
});
context.SaveChanges();
}
using (var context = new BlogContextComputedColumn(testStore.Name))
{
var blog = context.FullNameBlogs.Single();
blog.FullName = "The Gorilla";
// The property 'FullName' on entity type 'FullNameBlog' is defined to be read-only after it has been saved,
// but its value has been modified or marked as modified.
Assert.Equal(
CoreStrings.PropertyReadOnlyAfterSave("FullName", "FullNameBlog"),
Assert.Throws <InvalidOperationException>(() => context.SaveChanges()).Message);
}
}
}
public void Insert_and_update_with_computed_column()
{
using var testStore = SqlServerTestStore.CreateInitialized(DatabaseName);
using (var context = new BlogContextComputedColumn(testStore.Name))
{
context.Database.EnsureCreatedResiliently();
var blog = context.Add(
new FullNameBlog {
FirstName = "One", LastName = "Unicorn"
}).Entity;
context.SaveChanges();
Assert.Equal("One Unicorn", blog.FullName);
}
using (var context = new BlogContextComputedColumn(testStore.Name))
{
var blog = context.FullNameBlogs.Single();
Assert.Equal("One Unicorn", blog.FullName);
blog.LastName = "Pegasus";
context.SaveChanges();
Assert.Equal("One Pegasus", blog.FullName);
}
}
public void Insert_explicit_value_into_computed_column()
{
using (var testStore = SqlServerTestStore.CreateInitialized(DatabaseName))
{
using (var context = new BlogContextComputedColumn(testStore.Name))
{
context.Database.EnsureCreated();
context.Add(new FullNameBlog {
FirstName = "One", LastName = "Unicorn", FullName = "Gerald"
});
// The property 'FullName' on entity type 'FullNameBlog' is defined to be read-only before it is
// saved, but its value has been set to something other than a temporary or default value.
Assert.Equal(
CoreStrings.PropertyReadOnlyBeforeSave("FullName", "FullNameBlog"),
Assert.Throws <InvalidOperationException>(() => context.SaveChanges()).Message);
}
}
}
public void Insert_and_update_with_computed_column_with_querying_function()
{
using var testStore = SqlServerTestStore.CreateInitialized(DatabaseName);
using (var context = new BlogContextComputedColumn(testStore.Name))
{
context.GetService <IRelationalDatabaseCreator>().CreateTables();
context.Database.ExecuteSqlRaw("ALTER TABLE dbo.FullNameBlogs DROP COLUMN FullName;");
context.Database.ExecuteSqlRaw(
@"CREATE FUNCTION [dbo].[GetFullName](@Id int)
RETURNS NVARCHAR(MAX) WITH SCHEMABINDING AS
BEGIN
DECLARE @FullName NVARCHAR(MAX);
SELECT @FullName = [FirstName] + [LastName] FROM [dbo].[FullNameBlogs] WHERE [Id] = @Id;
RETURN @FullName
END");
context.Database.ExecuteSqlRaw("ALTER TABLE dbo.FullNameBlogs ADD FullName AS [dbo].[GetFullName]([Id]); ");
}
try
{
using (var context = new BlogContextComputedColumn(testStore.Name))
{
var blog = context.Add(
new FullNameBlog {
FirstName = "One", LastName = "Unicorn"
}).Entity;
context.SaveChanges();
Assert.Equal("OneUnicorn", blog.FullName);
}
using (var context = new BlogContextComputedColumn(testStore.Name))
{
var blog = context.FullNameBlogs.Single();
Assert.Equal("OneUnicorn", blog.FullName);
blog.LastName = "Pegasus";
context.SaveChanges();
Assert.Equal("OnePegasus", blog.FullName);
}
using (var context = new BlogContextComputedColumn(testStore.Name))
{
var blog1 = context.Add(
new FullNameBlog {
FirstName = "Hank", LastName = "Unicorn"
}).Entity;
var blog2 = context.Add(
new FullNameBlog {
FirstName = "Jeff", LastName = "Unicorn"
}).Entity;
context.SaveChanges();
Assert.Equal("HankUnicorn", blog1.FullName);
Assert.Equal("JeffUnicorn", blog2.FullName);
}
}
finally
{
using var context = new BlogContextComputedColumn(testStore.Name);
context.Database.ExecuteSqlRaw("ALTER TABLE dbo.FullNameBlogs DROP COLUMN FullName;");
context.Database.ExecuteSqlRaw("DROP FUNCTION [dbo].[GetFullName];");
}
}