Haskell Stack Ghci test-suite

问题

I'm trying to use stack to load my test-suite in ghci and have it load the QuickCheck and hspec dependency.

How can I do this?

I'm using the franklinchen template.
https://github.com/commercialhaskell/stack-templates/blob/master/franklinchen.hsfiles

I have tried
stack ghci spec
stack ghci test-suite
stack ghci --main-is spec

I modified the test-suite spec to target the main-is: LibSpec.hs file

test-suite spec
  default-language:    Haskell2010
  ghc-options:         -Wall
  type:                exitcode-stdio-1.0
  hs-source-dirs:      test
  main-is:             LibSpec.hs
  build-depends:       base
                     , chapterexercises
                     , hspec
                     , QuickCheck

回答1:

stack ghci --test

Note that this will only work if there's a single test suite and no other executable. Otherwise it will give you a warning:

* * * * * * * *
The main module to load is ambiguous. Candidates are:
Package `project' component exe:project-exe with main-is file: T:\project\app\Main.hs
Package `project' component test:project-test with main-is file: T:\project\test\Spec.hs
None will be loaded. You can specify which one to pick by:
 1) Specifying targets to stack ghci e.g. stack ghci project:exe:project-exe
 2) Specifying what the main is e.g. stack ghci --main-is project:exe:project-exe
* * * * * * * *

In this case you have to use

stack ghci --test chapterexercises:test:spec

Without --test stack is going to ignore the tests. That's why you don't get the ambiguity error in the first place.

来源：https://stackoverflow.com/questions/34558002/haskell-stack-ghci-test-suite

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