public void Get_migrations_query()
{
using (var context = new Context())
{
var historyRepository = new HistoryRepository(context.Configuration);
using (var historyContext = historyRepository.CreateHistoryContext())
{
var query = historyRepository.GetMigrationsQuery(historyContext);
var expression = (MethodCallExpression)query.Expression;
Assert.Equal("Select", expression.Method.Name);
Assert.Equal("h => new MigrationMetadata(h.MigrationId)", expression.Arguments[1].ToString());
expression = (MethodCallExpression)expression.Arguments[0];
Assert.Equal("OrderBy", expression.Method.Name);
Assert.Equal("h => h.MigrationId", expression.Arguments[1].ToString());
expression = (MethodCallExpression)expression.Arguments[0];
Assert.Equal("Where", expression.Method.Name);
Assert.Equal(
"h => (h.ContextKey == value(Microsoft.Data.Entity.Migrations.Infrastructure.HistoryRepository).GetContextKey())",
expression.Arguments[1].ToString());
var queryableType = expression.Arguments[0].Type;
Assert.True(queryableType.IsGenericType);
Assert.Equal("EntityQueryable", queryableType.Name.Remove(queryableType.Name.IndexOf("`", StringComparison.Ordinal)));
Assert.Equal(1, queryableType.GenericTypeArguments.Length);
Assert.Equal("HistoryRow", queryableType.GenericTypeArguments[0].Name);
}
}
}
