Setup project for testing

Thanks @gatsbyjs for the guide:
https://www.gatsbyjs.org/docs/unit-testing/

4 files changed, 31 insertions, 2 deletions

diff --git a/jest-preprocess.js b/jest-preprocess.js
new file mode 100644
index 0000000..95114e5
--- /dev/null
+++ b/jest-preprocess.js
@@ -0,0 +1,5 @@
+const babelOptions = {
+  presets: ['babel-preset-gatsby']
+}
+
+module.exports = require('babel-jest').createTransformer(babelOptions)
diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 0000000..d32f2f6
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,16 @@
+module.exports = {
+  transform: {
+    '^.+\\.jsx?$': `<rootDir>/jest-preprocess.js`
+  },
+  moduleNameMapper: {
+    '.+\\.(css|styl|less|sass|scss)$': `identity-obj-proxy`,
+    '.+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$': `<rootDir>/__mocks__/file-mock.js`
+  },
+  testPathIgnorePatterns: [`node_modules`, `.cache`],
+  transformIgnorePatterns: [`node_modules/(?!(gatsby)/)`],
+  globals: {
+    __PATH_PREFIX__: ``
+  },
+  testURL: `http://localhost`,
+  setupFiles: [`<rootDir>/loadershim.js`]
+}
diff --git a/loadershim.js b/loadershim.js
new file mode 100644
index 0000000..772dcc4
--- /dev/null
+++ b/loadershim.js
@@ -0,0 +1,3 @@
+global.___loader = {
+  enqueue: jest.fn()
+}
diff --git a/package.json b/package.json
index b3cbba8..e98148d 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,9 @@
     "@fortawesome/fontawesome-svg-core": "^1.2.15",
     "@fortawesome/free-brands-svg-icons": "^5.7.2",
     "@fortawesome/free-solid-svg-icons": "^5.7.2",
+    "babel-jest": "^24.5.0",
+    "babel-preset-gatsby": "^0.1.10",
+    "browser-monads": "^1.0.0",
     "emotion": "^10.0.9",
     "emotion-theming": "^10.0.10",
     "gatsby": "^2.1.30",
@@ -22,11 +25,13 @@
     "gatsby-source-filesystem": "^2.0.24",
     "gatsby-transformer-sharp": "^2.1.16",
     "html-pdf": "^2.2.0",
+    "identity-obj-proxy": "^3.0.0",
     "jest": "^24.5.0",
     "prop-types": "^15.7.2",
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
-    "react-helmet": "^5.2.0"
+    "react-helmet": "^5.2.0",
+    "react-test-renderer": "^16.8.5"
   },
   "devDependencies": {
     "prettier": "^1.16.4"
@@ -38,7 +43,7 @@
     "format": "prettier --write src/**/*.{js,jsx}",
     "start": "npm run develop",
     "serve": "gatsby serve",
-    "test": "exit 0"
+    "test": "jest"
   },
   "repository": {
     "type": "git",