Add Windows CI (#6)

* add windows build

* operating system differences

* hardcode regexp

Author: mfix-stripe

.github/workflows/validate.yml

@@ -4,7 +4,10 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1

tests/index.test.js

@@ -7,6 +7,16 @@ const loader = require('../src/loader');
 
 const source = fs.readFileSync(require.resolve('./fixture.md'), 'utf-8');
 
+function normalizeOperatingSystemPaths(s) {
+  const cwd = process
+    .cwd()
+    .replace(/^[a-zA-Z]:/, '') // replace C: for Windows
+    .split(path.sep)
+    .join(path.posix.sep);
+
+  return s.replace(cwd, '.').replace(/\\r\\n/g, '\\n');
+}
+
 function evaluate(output) {
   const {code} = babel.transformSync(output);
   const exports = {};
@@ -90,7 +100,7 @@ test('should fail build if invalid `schemaPath` is used', async () => {
 test('file output is correct', async () => {
   const output = await callLoader(options(), source);
 
-  expect(output.replace(process.cwd(), '.')).toMatchSnapshot();
+  expect(normalizeOperatingSystemPaths(output)).toMatchSnapshot();
 
   const page = evaluate(output);
 
@@ -184,7 +194,7 @@ test('HMR', async () => {
     source
   );
 
-  expect(output.replace(process.cwd(), '.')).toMatchSnapshot();
+  expect(normalizeOperatingSystemPaths(output)).toMatchSnapshot();
 });
 
 test('mode="server"', async () => {