Purepur

Generate tests from examples in your purescript-docs.

Given:

module Data.Array exposing …

-- | Convert a `Foldable` structure into an `Array`.
-- |
-- | ```purescript run
-- | > fromFoldable (Just 1)
-- | [1]
-- | ```
-- |
fromFoldable :: forall f. Foldable f => f ~> Array
fromFoldable = fromFoldableImpl foldr

purepur will generate:

module Test.Example.Data.Array where 

…

main :: Spec Unit
main = describe "ArrayEx" $ do 
    it "value spec in docs from:fromFoldable" $ show (fromFoldable (Just 1)) `shouldEqual` "[1]"

Usage

For purepur to recognize an example as a test, add ```purescript run to a comment in your purescript code, like shown here https://github.com/csicar/purescript-purepur/blob/master/example/src/ArrayEx.purs#L11. The syntax of the code-fence is identical to that of PSCI. This means that copying the terminal output from PSCI to a docs comment should directly work.

Now generate the test-files:

purepure -o test/docs --src "src/**/*.purs" --src "./README.md" $(spago sources)

• -o specifies the directory, where the test-files should be written to
• --src specified the glob, for which tests should be generated.

Now test/docs should look similar to this: https://github.com/csicar/purescript-purepur/blob/master/example/test/docs

In addition to the normal PSCI-Syntax, purepur allows multiline expressions and declarations:

```purescript run
> f x = 
    x + 1
> f 2
3
```

Building

git clone …
cd …
stack install

Testing

run in example

stack run -- -o test/docs --src "src/**/*.purs" (spago sources)

The project is forked from https://github.com/andyarvanitis/purescript-native