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WireMock VS MockServer

Compare WireMock VS MockServer and see what are their differences

WireMock logo WireMock

WireMock - a web service test double for all occasions.

MockServer logo MockServer

Easy mocking of any system you integrate with via HTTP or HTTPS.
  • WireMock Landing page
    Landing page //
    2023-07-23
  • MockServer Landing page
    Landing page //
    2022-03-13

WireMock features and specs

  • Flexible API Mocking
    WireMock allows developers to create a wide range of mock APIs, including simulating different behaviors and responses, which helps in testing edge cases and handling different scenarios without needing the actual service.
  • Standalone and Embeddable
    WireMock can be run as a standalone server or embedded into a Java application, providing versatility in how it can be integrated and used within various development environments.
  • Rich Feature Set
    WireMock offers features like request verification, fault injection, and response templating, which make it a powerful tool for replicating real-world service behavior in test environments.
  • Community and Documentation
    WireMock is supported by a large community and comprehensive documentation, making it easier to troubleshoot issues and integrate it effectively into development processes.

Possible disadvantages of WireMock

  • Java-Based Limitation
    WireMock is primarily a Java-based tool, which might not be ideal for teams not using Java, leading to additional setup and integration challenges for non-Java environments.
  • Performance Overhead
    Running WireMock, especially in complex scenarios or with a heavy load, can introduce performance overhead that might not be tolerable in all development environments, particularly in CI/CD pipelines.
  • Learning Curve
    Although WireMock is powerful, it has a steep learning curve for those unfamiliar with its configuration and usage, potentially requiring considerable time to become proficient.
  • Limited Non-Standard Protocols
    WireMock is primarily designed for HTTP-based services, and may not be suitable out-of-the-box for mocking services that use non-standard or proprietary protocols, thus limiting its applicability in some scenarios.

MockServer features and specs

  • Flexibility
    MockServer provides extensive support for HTTP and HTTPS as well as customizable responses, which allows developers to simulate various scenarios and behaviors in a flexible manner.
  • Scriptable Expectations
    You can define expectations using Java, JavaScript, JSON, and YAML, enabling you to control responses in a programmatic way for more complex testing scenarios.
  • Ease of Integration
    MockServer can be easily integrated with various build tools and CI/CD pipelines, which streamlines the testing process and makes it more efficient.
  • Extensive Documentation
    MockServer comes with comprehensive documentation that includes usage examples, configuration guides, and API references, which helps in decreasing the learning curve.
  • Support for Unit and Integration Testing
    The tool supports both unit and integration testing, making it versatile for testing different levels of a system in isolation.

Possible disadvantages of MockServer

  • Performance Overhead
    Running MockServer can introduce performance overhead, especially in resource-constrained environments, which may affect the speed of the tests.
  • Complex Configuration
    While powerful, the configuration can become complex, particularly for more elaborate mock scenarios, leading to a steeper learning curve for newcomers.
  • Dependency Management
    When used in a Java environment, managing dependencies can become cumbersome, particularly if there are version conflicts with other libraries in the project.
  • Requires Java Runtime
    MockServer requires a Java Runtime Environment, which can be a limitation if your development environment or CI/CD pipeline does not support Java.
  • Limited Community Support
    While it has good official documentation, the community support around MockServer is not as extensive as some other tools, which may limit the availability of third-party plugins and extensions.

WireMock videos

WireMock stand-alone by Ixchel Ruiz

MockServer videos

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Category Popularity

0-100% (relative to WireMock and MockServer)
API Tools
36 36%
64% 64
Developer Tools
37 37%
63% 63
APIs
39 39%
61% 61
HTTP Proxies
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, WireMock should be more popular than MockServer. It has been mentiond 21 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

WireMock mentions (21)

  • The best way for testing outbound API calls
    Mocha is a lib inspired by nock and WireMock. It allows checking if the mock was called or not, which is a nice feature. Like httptest, it also it don't automatically intercept the requests. - Source: dev.to / 3 months ago
  • Effective Strategies for Writing Unit Tests with External Dependencies like Databases and APIs
    For testing third-party API calls, you can use libraries such as WireMock or Nock. These tools allow you to simulate HTTP requests and responses, helping you test how your application behaves when interacting with an external service. For example, you can mock successful responses, simulate errors, or test timeouts, all without making real HTTP requests. - Source: dev.to / 6 months ago
  • Best API Mocking Platforms in 2024
    WireMock is a versatile, open-source platform for API mocking, offering powerful simulation features for both HTTP and HTTPS protocols. It’s highly customizable and is especially well-suited for complex use cases, such as testing microservices architectures and handling advanced behaviors. - Source: dev.to / 6 months ago
  • 10 Best API Mocking Tools (2024 Review)
    WireMock is a Java-based library for stubbing and mocking web services. It allows conditional response setup, latency simulation, and HTTP traffic recording. WireMock is open-source and free, suitable for developers familiar with Java. - Source: dev.to / 6 months ago
  • How To Test Integrations with APIs Using WireMock in .NET
    As we don't have other services running during integration testing - we need to somehow simulate these services. And here is where a WireMock library comes into play. WireMock allows mocking the APIs your service depends on. - Source: dev.to / 7 months ago
View more

MockServer mentions (4)

  • MockServer: Easy mocking of any system you integrate (HTTP or HTTPS)
    There are several strategies to solve this kind of challenge, but today we will see MockServer as a tool to resolve it. - Source: dev.to / 7 months ago
  • Please recommend a good API Mocking tool
    The open-source examples are mockoon, mock-server.com, etc. Source: almost 2 years ago
  • Testing with MockServer
    I've just found out MockServer and it looks awesome 🤩 so I wanted to check it out repeating the steps of my previous demo WireMock Testing which (as you can expect) uses WireMock, another fantastic tool to mock APIs. - Source: dev.to / almost 3 years ago
  • How to unit test successful Oauth requests of 3rd party API's?
    I tend to use MockServer. With MockServer you can define inputs, so you can say that the request should look like this with that URL, etc etc. That way you can verify that the request looks okay. Source: about 3 years ago

What are some alternatives?

When comparing WireMock and MockServer, you can also consider the following products

Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.

Webhook.site - Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.

Mockoon - Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.

Mockable - Quickly define some REST or SOAP endpoints and have them return json/xml (dummy) data.

Request inspector - Debug web hooks, http clients

Postman - The Collaboration Platform for API Development