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Testcontainers Brings Real Dependency Testing to .NET Integration Suites

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Integration testing in .NET has traditionally relied on shared environments or mocked services, both of which can produce unreliable or misleading results. Testcontainers addresses this by allowing developers to spin up real dependencies — such as SQL databases, Kafka brokers, and Redis — inside lightweight Docker containers directly from test code. The library supports a wide range of services including RabbitMQ, Elasticsearch, and custom Docker images, making it broadly applicable. Because containers are created and destroyed per test run, state pollution between tests is eliminated and results more closely reflect production behaviour. Testcontainers runs on any machine with Docker installed, offering portability across development and CI environments.

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