[#164] Add workflow for running Windows tests on CI

Problem: we are not testing behavior of xrefcheck on Windows

Solution: and add workflow to run
golden and tasty tests on CI
via github-actions windows runner
Some subproblems appear:

1.
Problem: CI build fails beacuse it needs `pcre` package
Solution: add it (somehow), see `install pacman dependencies`
in ci.yml

2.
Problem: Network errors displayed different on different platforms
Solution: collect output from both and use
`assert_diff expected_linux.gold || assert_diff expected_windows.gold`

3:
Problem: "Config matches" test is failing because checkout action
clone files with CRLF, and test assert equality of two ByteStrings
Solution: manually remove CR

.github/workflows/ci.yml

@@ -0,0 +1,81 @@
+# SPDX-FileCopyrightText: 2020 Kowainik
+# SPDX-FileCopyrightText: 2022 Serokell <https://serokell.io/>
+#
+# SPDX-License-Identifier: MPL-2.0
+
+# Sources:
+# • https://github.com/kowainik/validation-selective/blob/5b46cd4810bbaa09b704062ebbfa2bb47137425d/.github/workflows/ci.yml
+# • https://kodimensional.dev/github-actions
+# •  https://github.com/serokell/tztime/blob/336f585c2c7125a8ba58ffbf3dbea4f36a7c40e7/.github/workflows/ci.yml
+
+name: CI
+
+on: [push]
+
+jobs:
+  xrefcheck-build-and-test:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        stack: ["2.7.5"]
+        ghc: ["9.0.2"]
+        include:
+          - ghc: "9.0.2"
+            stackyaml: stack.yaml
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: 'true'
+
+    - uses: haskell/actions/setup@v2.0.1
+      id: setup-haskell-stack
+      name: Setup Haskell Stack
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        stack-version: ${{ matrix.stack }}
+
+    - uses: actions/cache@v3
+      name: Cache stack root
+      with:
+        path: ~/AppData/Roaming/stack
+        key: ${{ runner.os }}-${{ matrix.ghc }}-stack
+
+    - uses: actions/cache@v3
+      name: Cache AppData/Local/Programs/stack
+      with:
+        path: ~/AppData/Local/Programs/stack
+        key: ${{ runner.os }}-${{ matrix.ghc }}-appdata-stack
+
+
+# When editing this action, make sure it can run without using cached folders.
+# Yes, it tries to install mingw-w64-x86_64-pcre twice
+    - name: install pacman dependencies
+      run: |
+        stack --system-ghc exec -- pacman -S --needed --noconfirm pkgconf;
+        stack --system-ghc exec -- pacman -S --needed --noconfirm msys2-keyring;
+        stack --system-ghc exec -- pacman --noconfirm -Syuu;
+        stack --system-ghc exec -- pacman -S --needed --noconfirm mingw-w64-x86_64-pcre;
+        stack --system-ghc exec -- pacman --noconfirm -Syuu;
+        stack --system-ghc exec -- pacman -S --needed --noconfirm mingw-w64-x86_64-pcre;
+        stack --system-ghc exec -- pacman -S --needed --noconfirm pcre-devel;
+
+    - name: Build
+      run: |
+        stack build --system-ghc --stack-yaml ${{ matrix.stackyaml }} --test --bench --no-run-tests --no-run-benchmarks --ghc-options '-Werror' --haddock --no-haddock-deps
+
+    - name: stack test xrefcheck:xrefcheck-tests
+      run: |
+        stack test --system-ghc --stack-yaml ${{ matrix.stackyaml }} xrefcheck:xrefcheck-tests
+
+    - name: install xrefcheck to use with golden tests
+      run: |
+        stack --system-ghc --stack-yaml ${{ matrix.stackyaml }} install;
+
+    - uses: mig4/setup-bats@v1
+      name: Setup bats
+
+    - name: Golden tests
+      run: |
+        export PATH=$PATH:/c/Users/runneradmin/AppData/Roaming/local/bin;
+        bats ./tests/golden/**
+      shell: bash

CHANGES.md

@@ -25,6 +25,10 @@ Unreleased
     as broken (with message `Link targets a local file outside repository`).
     Same for links that are using directories outside repository (e.g. `/../repo/a.md`),
     since such things are not supported by GitHub markdown renderer.
+* [#191](https://github.com/serokell/xrefcheck/pull/191)
+  + Now we consider slash `/` (and only it) as path separator in local links for all OS,
+    so xrefcheck's report is OS-independent
+  + Use utf-8 compatible codepage on Windows
 
 0.2.1
 ==========

README.md

@@ -164,7 +164,17 @@ Currently supported options include:
 ## Build instructions [↑](#xrefcheck)
 
 Run `stack install` to build everything and install the executable.
-If you want to use cabal, you need to run (`stack2cabal`)[https://hackage.haskell.org/package/stack2cabal] first!
+If you want to use cabal, you need to run [`stack2cabal`](https://hackage.haskell.org/package/stack2cabal) first!
+
+### Run on Windows [↑](#xrefcheck)
+On Windows, executable requires some dynamic libraries (DLLs).
+They are shipped together with executable in [releases page](https://github.com/serokell/xrefcheck/releases).
+If you have builded executable from source using `stack install`,
+those DLLs are downloaded by stack to location is not on `%PATH%` by default.
+There are several ways to fix this:
+- Add `%LocalAppData%\Programs\stack\x86_64-windows\msys2-<...>\mingw64\bin` to your PATH
+- run `stack exec xrefcheck.exe -- <args>` instead of `xrefcheck.exe <args>`
+- add DLLs from archive from releases page to a folder containing `xrefcheck.exe`
 
 ### CI and nix [↑](#xrefcheck)
 
@@ -179,7 +189,6 @@ You can do that too if you wish.
 
 ## For further work [↑](#xrefcheck)
 
-- [ ] Support for non-Unix systems.
 - [ ] Support link detection in different languages, not only Markdown.
   - [ ] Haskell Haddock is first in turn.
 

tests/Test/Xrefcheck/ConfigSpec.hs

@@ -10,7 +10,7 @@ import Universum
 import Control.Concurrent (forkIO, killThread)
 import Control.Exception qualified as E
 
-import Data.ByteString qualified as BS
+import Data.ByteString.Char8 qualified as BS
 import Data.List (isInfixOf)
 import Data.Yaml (ParseException (..), decodeEither')
 import Network.HTTP.Types (Status (..))
@@ -37,7 +37,9 @@ test_config =
     -- stack exec xrefcheck -- dump-config -t GitHub -o tests/configs/github-config.yaml
       [ testCase "Config matches" $ do
         config <- BS.readFile "tests/configs/github-config.yaml"
-        when (config /= defConfigText GitHub) $
+        -- On Windows, git clone can replace \n with \r\n in some files
+        let removeCR = BS.filter (/= '\r')
+        when (removeCR config /= removeCR (defConfigText GitHub)) $
           assertFailure $ toString $ unwords
             [ "Config does not match the expected format."
             , "Run"

tests/golden/check-ignoreRefs/check-ignoreRefs.bats

@@ -22,7 +22,7 @@ load '../helpers'
     -c config-check-enabled.yaml \
     -r .
 
-  assert_diff expected.gold
+  assert_diff expected_linux.gold || assert_diff expected_windows.gold
 }
 
 @test "Ignore localhost, no config specified" {

tests/golden/check-ignoreRefs/expected_windows.gold

@@ -0,0 +1,43 @@
+=== Invalid references found ===
+
+  ➥  In file check-ignoreRefs.md
+     bad reference (external) at src:7:10-53:
+       - text: "web-site"
+       - link: https://localhost:20000/web-site
+       - anchor: -
+
+     ⛂  InternalException (HostCannotConnect "localhost" [Network.Socket.connect: <socket: N>: failed (Connection refused (WSAECONNREFUSED)),Network.Socket.connect: <socket: N>: failed (Connection refused (WSAECONNREFUSED))])
+
+
+
+  ➥  In file check-ignoreRefs.md
+     bad reference (external) at src:9:10-45:
+       - text: "team"
+       - link: https://127.0.0.1:20000/team
+       - anchor: -
+
+     ⛂  InternalException (HostCannotConnect "127.0.0.1" [Network.Socket.connect: <socket: N>: failed (Connection refused (WSAECONNREFUSED))])
+
+
+
+  ➥  In file check-ignoreRefs.md
+     bad reference (external) at src:11:10-44:
+       - text: "blog"
+       - link: http://localhost:20000/blog
+       - anchor: -
+
+     ⛂  ConnectionFailure Network.Socket.connect: <socket: N>: failed (Connection refused (WSAECONNREFUSED))
+
+
+
+  ➥  In file check-ignoreRefs.md
+     bad reference (external) at src:13:10-44:
+       - text: "labs"
+       - link: http://127.0.0.1:20000/labs
+       - anchor: -
+
+     ⛂  ConnectionFailure Network.Socket.connect: <socket: N>: failed (Connection refused (WSAECONNREFUSED))
+
+
+
+Invalid references dumped, 4 in total.