public static void Main(string[] args)
{
var host = CreateWebHostBuilder(args).Build();
using (var scope = host.Services.CreateScope())
{
var provider = scope.ServiceProvider;
var loggerFactory = provider.GetRequiredService <ILoggerFactory>();
var phoneBookContext = provider.GetRequiredService <PhoneBookContext>();
try
{
phoneBookContext.Database.Migrate();
}
catch (Exception ex)
{
var logger = loggerFactory.CreateLogger <Program>();
logger.LogError(ex, "An error occurred while migrating the DB");
}
try
{
PhoneBookContextSeed.SeedPhoneBooksAsync(phoneBookContext, loggerFactory).Wait();
}
catch (Exception ex)
{
var logger = loggerFactory.CreateLogger <Program>();
logger.LogError(ex, "An error occurred seeding the DB's phonebook table.");
}
}
host.Run();
}
protected override void ConfigureWebHost(IWebHostBuilder builder)
{
builder.ConfigureServices(services =>
{
// Create a new service provider.
var serviceProvider = new ServiceCollection()
.AddEntityFrameworkInMemoryDatabase()
.BuildServiceProvider();
// Add a database context (PhoneBookContext) using an in-memory
// database for testing.
services.AddDbContext <PhoneBookContext>(options =>
{
options.UseInMemoryDatabase("InMemoryDb");
options.UseInternalServiceProvider(serviceProvider);
});
// Build the service provider.
var sp = services.BuildServiceProvider();
// Create a scope to obtain a reference to the database
// context (PhoneBookContext).
using (var scope = sp.CreateScope())
{
var scopedServices = scope.ServiceProvider;
var db = scopedServices.GetRequiredService <PhoneBookContext>();
var loggerFactory = scopedServices.GetRequiredService <ILoggerFactory>();
var logger = scopedServices
.GetRequiredService <ILogger <CustomWebApplicationFactory <TStartup> > >();
// Ensure the database is created.
db.Database.EnsureCreated();
try
{
// Seed the database with test data.
PhoneBookContextSeed.SeedPhoneBooksAsync(db, loggerFactory).Wait();
}
catch (Exception ex)
{
logger.LogError(ex, $"An error occurred seeding the " +
"database with test messages. Error: {ex.Message}");
}
}
});
}