public void ConfigureEnumExt_Should_Add_TypeMappers() { // Arrange var swaggerGenOptions = new SwaggerGenOptions(); var allIds = Weekday.List.Select(x => x.Id); var expectedFirstId = allIds.FirstOrDefault(); var expectedOpenApiEnum = allIds .Select(x => (IOpenApiAny) new OpenApiString(x.ToString())) .ToList(); // Act swaggerGenOptions.ConfigureEnumExt(typeof(Weekday).Assembly); // Assert swaggerGenOptions.SchemaGeneratorOptions .CustomTypeMappings.TryGetValue(typeof(Weekday), out var mapping) .Should().BeTrue(); var schema = mapping !.Invoke(); schema.Should().NotBeNull(); schema.Should().BeEquivalentTo(new OpenApiSchema { Type = "integer", Example = new OpenApiLong(expectedFirstId), Enum = expectedOpenApiEnum, }); }