🎉 ✅ setup tests and add some

test/mockCategories.json

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+[
+  {
+    "title": "CSS",
+    "slug": "/css",
+    "resources": [
+      {
+        "title": "CSS Grid Generator",
+        "desc": "Visually create your css grid and export the code.",
+        "url": "https://cssgrid-generator.netlify.com/",
+        "tags": ["generator", "grid", "layout", "visual tool"]
+      },
+      {
+        "title": "Keyframes Editor",
+        "desc": "An insanely simple way to create CSS animations",
+        "url": "https://keyframes.app/editor/",
+        "tags": ["generator", "animation", "visual tool"]
+      },
+      {
+        "title": "Flexbox Froggy",
+        "desc": "A game to learn Flexbox",
+        "url": "https://flexboxfroggy.com",
+        "tags": ["educational", "beginner"]
+      }
+    ]
+  },
+  {
+    "title": "Design",
+    "slug": "/design",
+    "resources": [
+      {
+        "title": "UX/UI Designer Roadmap 2017",
+        "desc": "Roadmap to becoming a UI/UX Designer in 2017",
+        "url": "https://github.com/togiberlin/ui-ux-designer-roadmap",
+        "tags": ["career", "ui", "ux"]
+      },
+      {
+        "title": "Undraw",
+        "desc": "Free vector illustrations for your website.",
+        "url": "https://undraw.co",
+        "tags": ["illustration", "svg", "ui"]
+      },
+      {
+        "title": "Practical UI tips",
+        "desc": "7 Tips to boost your UI design.",
+        "url": "https://medium.com/refactoring-ui/7-practical-tips-for-cheating-at-design-40c736799886",
+        "tags": ["ui", "tips", "tricks"]
+      }
+    ]
+  }
+]

test/pure.test.js

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+import * as P from '../utils/pure.js'
+
+test('includesElOf 1', () => {
+  expect(P.includesElOf([1, 2])([2])).toBeTruthy
+})
+
+test('includesElOf 2', () => {
+  expect(P.includesElOf([1, 2])([3])).toBeFalsy
+})
+
+test('includesElOf 3', () => {
+  expect(P.includesElOf(['a', 'b'])(['a'])).toBeTruthy
+})
+
+test('includesElOf 4', () => {
+  expect(P.includesElOf(['aa', 'b'])(['a'])).toBeFalsy
+})
+
+test('partiallyIncludesElOf 1', () => {
+  expect(P.partiallyIncludesElOf(['a', 'b'], ['a'])).toBeTruthy
+})
+
+test('partiallyIncludesElOf 2', () => {
+  expect(P.partiallyIncludesElOf(['aa', 'b'], ['a'])).toBeTruthy
+})
+
+test('partiallyIncludesElOf 3', () => {
+  expect(P.partiallyIncludesElOf(['aa', 'b'], ['c'])).toBeFalsy
+})