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Operating microservices-based development environments presents unique testing challenges. To ease this problem for developers, Richard North developed an open source solution called Testcontainers in 2015. Today, the open source project is used by companies such as Uber, Netflix, Spotify and Capital One.
North and co-founder Sergey Egorov (who was co-maintainer of TestContainers) founded AtomicJar in 2021 to build a commercial company on open source utilities. They took the original idea a step further by creating a cloud-based version to expand the tool’s capabilities and move some resource-intensive testing from a developer’s laptop to the cloud.
Today, the company announced a $25 million Series A and public beta opening of Testcontainers Cloud. GA may come later this year.
According to the startup’s CEO Egorov, a big test case for developers is that they use representations of test components instead of actual software, and they often believe that these tests are reproducing what happens in reality. Live environment. Test containers replace testing with real versions of dependent pieces of software.
If I’m developing my application with Postgres, Kafka, and Redis, I’m testing how it would look in production with real Postgres, real Kafka, and real Redis. And then I try with real databases, and the same technologies that do not give me enough confidence are not just some mockery. [that they will work the same way in production]” Egorov told TechCrunch.
TestContainers Cloud moves the resource-heavy parts of the testing process to the cloud while allowing developers to use the tools they’re used to on their laptops. “It gives developers a tool they can use. It’s not a framework. It’s something that tells them how to develop software. It’s a generic tool. They can add it to any stack they like and start testing, where they used to use emulators for real dependencies,” he said.
Additionally, TestContainers Cloud is built for teams rather than a lone developer working on a laptop. “The commercial version allows companies to consistently adopt Testcontainers in development environments and CI environments. It also brings improvements to those testing approaches because the open source version is limited to a single machine where tests run.”
Today the company has 23 employees. Egorov is hiring, and the job market is stabilizing, and he’s seeing high-quality talent in the pipeline. The company said it hired a recruiter in November, who is helping it focus more on diversity and inclusion in its hiring.
Today’s $25 million round was led by Insight Partners with participation from existing investors Bolstart Ventures, Tribe Capital, Chalfen Ventures and Scenic founder Guy Podjarny and Scenic CEO Peter McKay. The company previously raised a $4 million seed round in 2021.
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