stack:tldr:0a3c7
The command "stack test" is used in the context of Haskell programming language along with the tool called "Stack".
Stack is a build tool and package manager for Haskell that helps in managing project dependencies, building, and running tests for Haskell projects.
When you run the command "stack test" in the terminal, it performs the following actions:
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It checks the project's local configuration file called "stack.yaml" to determine the appropriate versions of GHC (Glasgow Haskell Compiler) and package dependencies for the project.
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It fetches the required package dependencies from the package index specified in the configuration file.
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It builds the project, compiling all the source code files in the project and linking them together.
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It then runs the test suite specified in the project.
The "stack test" command ensures that all the necessary dependencies are available, builds the project, and runs the test suite so that you can verify that your code and any associated tests are functioning correctly.
By running "stack test", you can quickly and easily run the test suite for your Haskell project and get feedback on the success or failure of your tests.