feat(integration tests): issues/24 build testing (#25)

* distribution, build checks
* version output check

package.json

@@ -59,7 +59,7 @@
     "build": "run-s -l build:pre build:version build:js build:post test:integration",
     "build:js": "react-scripts build",
     "build:post": "sh ./scripts/build.sh",
-    "build:pre": "rm -rf -- \"$(pwd)\"/build",
+    "build:pre": "rm -rf -- \"$(pwd)\"/build; rm -rf -- \"$(pwd)\"/public/apps",
     "build:version": "sh ./scripts/version.sh",
     "release": "standard-version",
     "start": "sh ./scripts/dev.chrome.sh; run-p -l api:dev start:js",

tests/__snapshots__/dist.test.js.snap

@@ -0,0 +1,28 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Build distribution should match a specific file output 1`] = `
+Array [
+  "",
+  "./build/index.html",
+  "./build/locales/en.json",
+  "./build/locales/locales.json",
+  "./build/static/css/2*chunk*map",
+  "./build/static/css/2*chunk.css",
+  "./build/static/css/main*chunk*map",
+  "./build/static/css/main*chunk.css",
+  "./build/static/js/2*chunk*map",
+  "./build/static/js/2*chunk.js",
+  "./build/static/js/main*chunk*map",
+  "./build/static/js/main*chunk.js",
+  "./build/static/js/runtime",
+  "./build/static/js/runtime",
+  "./build/static/media/pfbg_2000*jpg",
+  "./build/static/media/pfbg_576*jpg",
+  "./build/static/media/pfbg_576@2x*jpg",
+  "./build/static/media/pfbg_768*jpg",
+  "./build/static/media/pfbg_768@2x*jpg",
+  "./build/static/media/pfbg_992@2x*jpg",
+  "main*js",
+  "main*js.map",
+]
+`;

tests/dist.test.js

@@ -10,10 +10,11 @@ describe('Build distribution', () => {
       .toString()
       .replace(/\s+|\n+|\r+/g, '')
       .replace(new RegExp(`./${outputDir}`, 'gi'), `~./${outputDir}`)
+      .replace(new RegExp(`~./${outputDir}/.DS_Store`, 'gi'), '')
       .replace(/\.([a-z0-9]+)\./gi, '*')
       .split('~')
       .sort();
 
-    expect(replacedGeneratedFilesMinsHash.length).toBeDefined();
+    expect(replacedGeneratedFilesMinsHash).toMatchSnapshot();
   });
 });

tests/version.test.js

@@ -0,0 +1,10 @@
+const fs = require('fs');
+
+describe('Version', () => {
+  const loadFile = file => (fs.existsSync(file) && fs.readFileSync(file, { encoding: 'utf-8' })) || '';
+
+  it('should have a specific version output', () => {
+    const fileContents = loadFile('./.env.production.local');
+    expect(/^UI_VERSION=\d\.\d\.\d\.[a-z0-9]{7}$/i.test(fileContents.trim())).toBe(true);
+  });
+});