public DbContext SnapshotCreation()
{
var snapshot = new NorthWindDatabaseFactory(scaffold, snapshot: true);
snapshot.CreateDbContext();
return(snapshot.CreateDbContext());
}
public void Setup()
{
scaffold = new DatabaseScaffold();
factory = new NorthWindDatabaseFactory(scaffold);
factory.CreateDbContext();
// Pre-Create snapshot db.
var snapshot = new NorthWindDatabaseFactory(scaffold, snapshot: true);
snapshot.CreateDbContext().Dispose();
}
public void CreateDbContext_creates_an_instance()
{
// Arrange
using var instance = new NorthWindDatabaseFactory();
// Act
using var dbContext = instance.CreateDbContext();
// Assert
dbContext.Should().NotBeNull();
}
public void CreateDbContext_prepares_the_db_context()
{
// Arrange
using var instance = new NorthWindDatabaseFactory();
// Act
using var dbContext = instance.CreateDbContext();
// Assert
dbContext.Should().NotBeNull();
TestHelpers.ShouldBePrepared(dbContext);
}
public void ExecuteMigrate_is_called()
{
// Arrange
using var instance = new NorthWindDatabaseFactory();
// Act
using var dbContext = instance.CreateDbContext();
// Assert
instance.MigratedDbContext.Should().NotBeNull();
instance.MigratedDbContext.Should().NotBeSameAs(dbContext);
}
public void CreateDbContext_opens_the_database()
{
// Arrange
using var instance = new NorthWindDatabaseFactory();
// Act
using var dbContext = instance.CreateDbContext();
// Assert
var connection = dbContext.Database.GetDbConnection();
connection.State.Should().Be(ConnectionState.Open);
}
public void Constructor_can_work_snapshot_mode()
{
// Arrange
var count = 0;
using var instance = new NorthWindDatabaseFactory(snapshot: true);
instance.Prepared += () => count++;
// Act
TestHelpers.MakeFirstCall(instance);
using var dbContext = instance.CreateDbContext();
// Assert
count.Should().Be(0);
TestHelpers.ShouldBePrepared(dbContext);
}
public void CreateDbContext_calls_prepare_only_once()
{
// Arrange
var count = 0;
using var instance = new NorthWindDatabaseFactory();
instance.Prepared += () => count++;
// Act
TestHelpers.MakeFirstCall(instance);
using var dbContext = instance.CreateDbContext();
// Assert
count.Should().Be(1);
TestHelpers.ShouldBePrepared(dbContext);
}
public DbContext FastCreation()
{
return(factory.CreateDbContext());
}
public static void MakeFirstCall(NorthWindDatabaseFactory instance)
{
#pragma warning disable CS0642 // Possible mistaken empty statement
using (instance.CreateDbContext());
#pragma warning restore CS0642 // Possible mistaken empty statement
}