using appsetting connection string

WebTest/Startup.cs

@@ -45,7 +45,7 @@ namespace WebTest
             services.AddTransient<LuUtilsPkGuidDataAccess>();
             services.AddDbContext<LuUtilsDbContext>(options =>
             {
-                options.UseNpgsql(Tests.ConnectionString);
+                options.UseNpgsql(Configuration.GetConnectionString("default"));
                 options.UseInternalServiceProvider(new ServiceCollection()
                     .AddEntityFrameworkNpgsqlLuticate()
                     .AddEntityFrameworkNpgsql()