Each environment you use to test functionality during the development process may require different configurations for running tests. For example, tests in a development environment may only need to run on one device, while tests in staging require several different types of devices. You can configure tests separately by environment to ensure that tests only run on what is needed for a single environment. Tests often timeout and fail if an application takes too long to load. Load times can be affected by factors such as an unexpected network blip or an unusual surge in traffic that overloads application servers. These inconsistencies can cause tests to generate false positives, decreasing their ability to reliably notify teams of legitimate issues.

These tests can be used to determine if any of the schemas or resolvers defined return any sensitive information so that they can be updated appropriately. To ensure that your GraphQL APIs remain performant when operating at scale, load testing can be used as a good indicator to test the performance of your APIs. Load testing your GraphQL APIs can be done in the same ways used to test traditional REST APIs. Popular tools such as Apache JMeter can be used to set up test plans containing tests that send requests to your GraphQL servers at a high rate and volume to test its performance. The delivery of a quality software or application depends on the effectiveness and efficiency of its software testing plan. Therefore, test automation can only help achieve quality software and reduce time-to-market when it follows certain best practices.

  • For example, a test that is meant to verify functionality for a checkout workflow should not include the steps for creating a new account.
  • Functional Testing verifies response codes, validates responses, and checks error codes for application functions.
  • Manual testing is a very hands-on process where a QA professional executes individual tests one by one.
  • The good thing about using libraries like responses is that you don’t need to patch requests ourselves.
  • In the next two years, the number of API testers who automated their tests is expected to grow by 30 percent, which can be in part attributed to the increased availability of excellent API testing tools.

Prior to the introduction of Shift-Left Testing, software testing occurred only after the development was completed and the code was provided to the testers. This strategy resulted in a last-minute scramble to make the deadline, as well as a significant reduction in product quality. In this post, we discussed some best practices for creating end-to-end tests that are efficient and provide the context needed to troubleshoot issues. We also looked at a few ways Datadog can help simplify the test creation process and organize your tests. You can check out Part 2 of our series to learn how to maintain your existing suite of tests or our documentation to learn more about creating E2E tests.

Manual Testing Vs Automated Testing

This will return a response that will be the same as the response returned from executing a mutation against a database. Mutation tests are used to ensure that a query, when successfully executed, persists changes to the database. EasyGraphQL gives users the option to use fixtures to mock the writing of database operations when executing mutations. First, define the mutation you want to test and also the sample input data. In this post, we’ve learned what unit testing is and how to set up the unit testing project with xUnit. This concludes the tests scenarios for our ShoppingCartController and we just want to summarize the general advice about unit testing.

Here, we’ve tested the ability of our REST API to return appropriate status codes when faced with either faulty data or when someone’s trying to update a non-existing entity. The PUT request handler has a bit more logic to it than the two before this. It checks whether we’ve provided an ID, resulting in an exception if it’s missing. Then, it checks if the ID actually belongs to a record in the database, throwing an exception if it doesn’t. Only then does it actually update a record in the database, if the ID isn’t null and it does belong to a record. Having unit tests for the web layer also will significantly increase the test code coverage for your app and will reflect in tools like Sonar and JaCoCo.

api testing best practices

We should try to write our tests in a way that minor changes to the code shouldn’t make us change all of our tests. The DRY (don’t repeat yourself) principle applies here, and we should treat our test code the same as the production code. This lowers the possibility that one day someone gets to the point where he/she needs to comment out all of our tests because it has become too difficult to maintain them.

It has become an integral part of modern mobile and web applications, both internal and customer-facing. There is an increasing number of companies across all verticals building applications with a core focus on API infrastructure. The increasing adoption of the cloud is becoming one of the key drivers for the increase in usage of APIs. Yet, when armed with the right tools and knowledge, you can tame the beast. This adapter will fail in production, and the unit tests won’t catch it. But truth to be told, you also have the same problem with the previous approach.

This means you spend more time sifting through test results than finding and fixing the issue. In the last few sections, we looked at best practices for creating focused and valuable test cases. Next, we’ll look at test suites as a whole and how you can organize them by testing environments and other key metadata.


You can think of an API as a brain with many individual neurons that are activated by specific impulses. Any company can create an application that sends an impulse to a public API and receives a certain response. This enables seamless communication and information exchange between multiple software systems from multiple software companies.

And if you plan to list an application in an application marketplace, the marketplace providers will likely require you to perform API security testing and share the results. In some cases, the providers require their own testing as part of the registration process and will charge a fee for the service. Implementing a continuous API testing process represents hitting the sweet spot.

api testing best practices

It’s also good practice and standard convention to name you test classes the same as the controllers you’re testing, with a -Test suffix. For example, if we want to test the PatientRecordController, we’ll make a PatientRecordControllerTest class in the appropriate package under src/test/java. Mockito – General-purpose framework for mocking and stubbing services and objects. Spring Boot testing can be optimized by using the @DataJpaTest annotation to only load @Repository Spring components. In addition, configuring the test to exclude @Service, @Controller, and other components will greatly improve speed.

Without a clear plan outlining how to approach a specific workflow, tests can easily become complex, with a large number of unnecessary steps, dependencies, and assertions. This increases test flakiness and execution times, making it more difficult to troubleshoot and respond to issues in a timely manner. API is the acronym for Application Programming Interface which acts as an interface to communicate between two software systems. API would help, to a great https://globalcloudteam.com/ extent, to have a business logic segregated from the other application resources and to have cross-platform compatibility. In today’s fast-paced software development environment, API testing automation plays a more important role than ever before. In the next two years, the number of API testers who automated their tests is expected to grow by 30 percent, which can be in part attributed to the increased availability of excellent API testing tools.

Cypress Testing

There is no graphical user interface to test the program, making it impossible to provide input data. For instance, the first API method may be used to delete a specific record from a table, and this function then calls another function to REFRESH the database. The database and server should be set up to meet the application’s needs. As a result, setting up a testing environment for API automation testing seems to be a little difficult. It works by recording the HTTP interaction the first time you run the test as a flat YAML file called a cassette.

API is the bridge to fetch out data from the data table with some or complex processing on it. It is advisable to check on time to get a response from the particular API to check the performance of the overall application. If it doesn’t meet the criteria then the optimizations need to be made. API testing is a phase where we are conducting the testing activities before coupling with UI stuff for the application. So, it is a very early stage from where we can find any defect, present in the core coding, for the application. Since we’ve mapped the InvalidRequestException with a @ResponseStatus(HttpStatus.BAD_REQUEST), throwing the exception will result in the method returning a HttpStatus.BAD_REQUEST.

api testing best practices

It begins by defining what a „unit“ is and although this is not strictly defined, the unit represents a unit of work – usually a single method in our code. Our intention in this post is to make an intro to unit testing of the ASP.NET Core Web API application. Testing early and frequently facilitates a significant reduction in the defect or error turn-around time.

Visual Regression Cloud

If all your tests pass, then the team can safely move forward with the deployment. If there are failures, then they need to be notified as soon as possible to quickly troubleshoot. We’ve walked through a few ways you can streamline and build efficient test suites at a high level. Another important aspect of creating tests involves sending notifications so you can be alerted on their status in a timely manner. Just as adding the environment in the test’s title helps you quickly identify where a test runs, tags also enable you to categorize tests with key attributes as soon as you create them. Once you know which application workflows need coverage, you can start building efficient test suites.

Parasoft allows users to create scripts that can be used to automate API testing. The benefit of using Parasoft is the tool’s strong support for JSON verification which integrates easily with the kind of responses returned from GraphQL endpoints. It’s important to create tests that do not duplicate steps and stay within the scope of the application workflow that is being tested. Separating workflows into smaller, focused tests helps you stay within scope, reduce points of maintenance, and troubleshoot issues faster. For example, a test that is meant to verify functionality for a checkout workflow should not include the steps for creating a new account.

Functional Testing verifies response codes, validates responses, and checks error codes for application functions. Integration/Interoperability Testing comes into play for connections with third-party applications and makes sure you and your business partners can properly exchange data sets. You can also test to ensure external applications api testing best practices without proper credentials do not have access. This process runs a single request to a single endpoint, looking for a single response or set of responses. This type of testing is handy when trying to pinpoint the cause of an API issue. Then pass the input and the mutation to the .mock method of your tester to simulate the mutation.

Once the logic of an application is designed, API tests can be built to immediately validate the correctness in responses and data. The software team doesn’t have to wait for the full application to be built. Automation is another key best practice and is helpful for repetitive testing tasks and processes that are difficult to conduct manually. Automation is critical for achieving continuous delivery since it allows software teams to run more tests in less time, accelerate testing life cycles, and increase testing efficiency. Automation is particularly ideal for regression test cases and applications where testing is required before every new release.

Api Security Testing: Importance, Risks And Best Practices

You can also test in advance of knowing when activity will pick up significantly, such as a special promotion or seasonal products. Once your tester is initialized you can create a test by defining the query you want to test against your resolver bypassing the query and parameters to the .graphql method. This will return a result that you can then use to assert against the expected value, using the testing framework of your choice. The GraphQL query language was created to help with common API integration problems. It was built to be scalable and aligned with how data is being created and consumed today. GraphQL’s intuitive and flexible syntax allows developers to build more performant and flexible applications.

Then, divide the testing efforts based on the team member’s skill set. For example, writing test scripts requires an in-depth knowledge of scripting languages. Thus, to perform these tasks, you should have QA engineers that know the script language provided by the automated testing tool. The efficiency of a test automation plan depends on the correct task allocations to personnel based on the test schedule, the expertise of the professionals, and the testing team size. An application programming interface is a piece of software that lets applications and services interact with each other. They provide the interface that facilitates data and logic transfer among diverse hardware and software systems.


Again, the problem is, much like unittest.mock, your test is coupled to the implementation. The good thing about using libraries like responses is that you don’t need to patch requests ourselves. The data is returned as a Python dictionary when you call resp.json().

Can a team learn a new programming language and implement a successful test automation project? A timely software testing catches the problem, rectifying it before the feature reaches the user. Software testing is one of the most active discussions while the software is being designed to provide ease to its users and is an integral part of software development. An API is a computer interface that allows two different software systems to communicate and share data.

Security Misconfiguration

What we are going to do here instead is add the ModelError object explicitly to the ModelState and then assert on the response of the called method. In most cases, it is possible to name the method so that it is not even necessary to read the actual code to understand what is being tested. We will decorate test methods with the attribute, which is used by the xUnit framework, marking them as the actual testing methods.

Testing The Api Using Vcr Py

Parameter Combination, Parameter Selection, and Call Sequencing are the three main issues in Web API testing. The lessons that follow give step-by-step guidance to automating API testing. Security Testing − Testing for security involves determining what form of authentication is necessary and if sensitive data is encrypted through HTTP or both. The API’s input parameters must be carefully considered and described. In this scenario, one of the API functions is called, which then calls another function.