add macos references

package.json

@@ -26,11 +26,11 @@
   "scripts": {
     "build": "node tasks/prepare-binaries.js",
     "test": "npm run test:smoke && npm run test:js",
-    "test:smoke": "./bin/asciidoctor-pdf --version",
+    "test:smoke": "./bin/asciidoctor-web-pdf --version",
     "test:js": "mocha test/**_test.js",
     "lint": "standard lib/**.js test/**.js tasks/**js",
     "publish": "node tasks/publish.js",
-    "test:update-reference": "docker build -f test/Dockerfile -t asciidoctor-web-pdf/test . && docker run --name asciidoctorwebpdftest asciidoctor-web-pdf/test:latest && docker cp asciidoctorwebpdftest:/app/test/output ./test/reference/"
+    "test:update-linux-reference": "docker build -f test/Dockerfile -t asciidoctor-web-pdf/test . && docker run --name asciidoctorwebpdftest asciidoctor-web-pdf/test:latest && docker cp asciidoctorwebpdftest:/app/test/output ./test/reference/linux/"
   },
   "repository": {
     "type": "git",

test/helper.js

@@ -1,5 +1,6 @@
 const ospath = require('path')
 const fs = require('fs')
+const os = require('os')
 const childProcess = require('child_process')
 const PNG = require('pngjs').PNG
 const pixelmatch = require('pixelmatch')
@@ -23,11 +24,12 @@ function computeImageDifferences (referenceBuffer, actualBuffer, diffFilename) {
 }
 
 function toVisuallyMatch (referenceFilename, actualPath) {
+  const platform = os.platform() === 'darwin' ? 'macos' : 'linux'
   let referencePath
   if (ospath.isAbsolute(referenceFilename)) {
     referencePath = referenceFilename
   } else {
-    referencePath = ospath.join(__dirname, 'reference', referenceFilename)
+    referencePath = ospath.join(__dirname, 'reference', platform, referenceFilename)
   }
 
   if (!fs.existsSync(actualPath)) {
@@ -45,7 +47,7 @@ function toVisuallyMatch (referenceFilename, actualPath) {
   let pixels = 0
   const tmpFiles = [actualPath]
 
-  const currentFilenameRegexp = new RegExp(`${actualBasename}-(?:actual|reference)-([0-9]+).png`)
+  const currentFilenameRegexp = new RegExp(`${actualBasename}-(?:actual|reference)-(\\d+).png`)
   const files = fs.readdirSync(imagesOutputDir)
   const indexes = new Set(files
     .filter((name) => name.match(currentFilenameRegexp))