tests: added integration tests for the api endpoints

refactor: added request helper function to reduce code duplication

.github/workflows/test.yml

@@ -0,0 +1,36 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+
+      - name: Cache node modules
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-node-modules
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-npm-cache-
+
+      - name: Install & Test
+        run: |
+          npm install
+          npm run test

.gitignore

@@ -1,3 +1,4 @@
 .vercel
 .env
-node_modules
+node_modules
+package-lock.json

.vercelignore

@@ -1 +1,2 @@
-.env
+.env
+package-lock.json

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Anurag Hazra
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

api/index.js

@@ -1,145 +1,20 @@
-const axios = require("axios");
-const { renderError, kFormatter } = require("../utils");
 require("dotenv").config();
-
-async function fetchStats(username) {
-  if (!username) throw Error("Invalid username");
-
-  const res = await axios({
-    url: "https://api.github.com/graphql",
-    method: "post",
-    headers: {
-      Authorization: `bearer ${process.env.GITHUB_TOKEN}`,
-    },
-    data: {
-      query: `
-        query userInfo($login: String!) {
-          user(login: $login) {
-            name
-            repositoriesContributedTo(first: 100, contributionTypes: [COMMIT, ISSUE, PULL_REQUEST, REPOSITORY]) {
-              totalCount
-            }
-            contributionsCollection {
-              totalCommitContributions
-            }
-            pullRequests(first: 100) {
-              totalCount
-            }
-            issues(first: 100) {
-              totalCount
-            }
-            repositories(first: 100) {
-              nodes {
-                stargazers {
-                  totalCount
-                }
-              }
-            }
-          }
-        }
-      `,
-      variables: {
-        login: username,
-      },
-    },
-  });
-
-  const stats = {
-    name: "",
-    totalPRs: 0,
-    totalCommits: 0,
-    totalIssues: 0,
-    totalStars: 0,
-    contributedTo: 0,
-  };
-
-  if (res.data.errors) {
-    console.log(res.data.errors);
-    throw Error("Could not fetch user");
-  }
-
-  const user = res.data.data.user;
-
-  stats.name = user.name;
-  stats.totalIssues = user.issues.totalCount;
-  stats.totalCommits = user.contributionsCollection.totalCommitContributions;
-  stats.totalPRs = user.pullRequests.totalCount;
-  stats.contributedTo = user.repositoriesContributedTo.totalCount;
-
-  stats.totalStars = user.repositories.nodes.reduce((prev, curr) => {
-    return prev + curr.stargazers.totalCount;
-  }, 0);
-
-  return stats;
-}
-
-const createTextNode = (icon, label, value, lheight) => {
-  const classname = icon === "★" && "star-icon";
-  return `
-    <tspan x="25" dy="${lheight}" class="stat bold">
-    <tspan class="icon ${classname}" fill="#4C71F2">${icon}</tspan> ${label}:</tspan>
-    <tspan x="155" dy="0" class="stat">${kFormatter(value)}</tspan>
-  `;
-};
-
-const renderSVG = (stats, options) => {
-  const {
-    name,
-    totalStars,
-    totalCommits,
-    totalIssues,
-    totalPRs,
-    contributedTo,
-  } = stats;
-  const { hide, show_icons, hide_border, line_height } = options || {};
-
-  const lheight = line_height || 25;
-
-  const STAT_MAP = {
-    stars: createTextNode("★", "Total Stars", totalStars, lheight),
-    commits: createTextNode("🕗", "Total Commits", totalCommits, lheight),
-    prs: createTextNode("🔀", "Total PRs", totalPRs, lheight),
-    issues: createTextNode("ⓘ", "Total Issues", totalIssues, lheight),
-    contribs: createTextNode("📕", "Contributed to", contributedTo, lheight),
-  };
-
-  const statItems = Object.keys(STAT_MAP)
-    .filter((key) => !hide.includes(key))
-    .map((key) => STAT_MAP[key]);
-
-  const height = 45 + (statItems.length + 1) * lheight;
-
-  return `
-    <svg width="495" height="${height}" viewBox="0 0 495 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
-      <style>
-      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
-      .stat { font: 600 14px 'Segoe UI', Ubuntu, Sans-Serif; fill: #333 }
-      .star-icon { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; }
-      .bold { font-weight: 700 }
-      .icon {
-        display: none;
-        ${!!show_icons && "display: block"}
-      }
-      </style>
-      ${
-        !hide_border &&
-        `<rect x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>`
-      }
-     
-      <text x="25" y="35" class="header">${name}'s GitHub Stats</text>
-      <text y="45">
-        ${statItems}
-      </text>
-    </svg>
-  `;
-};
+const { renderError } = require("../src/utils");
+const fetchStats = require("../src/fetchStats");
+const renderStatsCard = require("../src/renderStatsCard");
 
 module.exports = async (req, res) => {
-  const username = req.query.username;
-  const hide = req.query.hide;
-  const hide_border = req.query.hide_border;
-  const show_icons = req.query.show_icons;
-  const line_height = req.query.line_height;
+  const {
+    username,
+    hide,
+    hide_border,
+    show_icons,
+    line_height,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+  } = req.query;
   let stats;
 
   res.setHeader("Content-Type", "image/svg+xml");
@@ -150,11 +25,15 @@ module.exports = async (req, res) => {
   }
 
   res.send(
-    renderSVG(stats, {
+    renderStatsCard(stats, {
       hide: JSON.parse(hide || "[]"),
       show_icons,
       hide_border,
       line_height,
+      title_color,
+      icon_color,
+      text_color,
+      bg_color,
     })
   );
 };

api/pin.js

@@ -1,129 +1,17 @@
-const axios = require("axios");
-const { renderError, kFormatter } = require("../utils");
 require("dotenv").config();
-
-async function fetchRepo(username, reponame) {
-  const res = await axios({
-    url: "https://api.github.com/graphql",
-    method: "post",
-    headers: {
-      Authorization: `bearer ${process.env.GITHUB_TOKEN}`,
-    },
-    data: {
-      query: `
-        query getRepo($login: String!, $repo: String!) {
-          user(login: $login) {
-            repository(name: $repo) {
-              name
-              stargazers {
-                totalCount
-              }
-              description
-              primaryLanguage {
-                color
-                id
-                name
-              }
-              forkCount
-            }
-          }
-          organization(login: $login) {
-            repository(name: $repo) {
-              name
-              stargazers {
-                totalCount
-              }
-              description
-              primaryLanguage {
-                color
-                id
-                name
-              }
-              forkCount
-            }
-          }
-        }
-      `,
-      variables: {
-        login: username,
-        repo: reponame,
-      },
-    },
-  });
-
-  const data = res.data.data;
-
-  console.log(res.data);
-  if (!data.user && !data.organization) {
-    throw new Error("Not found");
-  }
-
-  if (data.organization === null && data.user) {
-    if (!data.user.repository) {
-      throw new Error("User Repository Not found");
-    }
-    return data.user.repository;
-  }
-
-  if (data.user === null && data.organization) {
-    if (!data.organization.repository) {
-      throw new Error("Organization Repository Not found");
-    }
-    return data.organization.repository;
-  }
-}
-
-const renderRepoCard = (repo) => {
-  const { name, description, primaryLanguage, stargazers, forkCount } = repo;
-  const height = 120;
-
-  const shiftText = primaryLanguage.name.length > 15 ? 0 : 30;
-  return `
-    <svg width="400" height="${height}" viewBox="0 0 400 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
-      <style>
-      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
-      .stat { font: 600 14px 'Segoe UI', Ubuntu, Sans-Serif; fill: #333 }
-      .star-icon { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; }
-      .bold { font-weight: 700 }
-      .description { font: 400 13px 'Segoe UI', Ubuntu, Sans-Serif; fill: #586069 }
-      .gray { font: 400 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: #586069 }
-      </style>
-      <rect x="0.5" y="0.5" width="399" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>
-      <svg x="25" y="25" viewBox="0 0 16 16" version="1.1" width="16" height="16" fill="#586069">
-        <path fill-rule="evenodd" d="M2 2.5A2.5 2.5 0 014.5 0h8.75a.75.75 0 01.75.75v12.5a.75.75 0 01-.75.75h-2.5a.75.75 0 110-1.5h1.75v-2h-8a1 1 0 00-.714 1.7.75.75 0 01-1.072 1.05A2.495 2.495 0 012 11.5v-9zm10.5-1V9h-8c-.356 0-.694.074-1 .208V2.5a1 1 0 011-1h8zM5 12.25v3.25a.25.25 0 00.4.2l1.45-1.087a.25.25 0 01.3 0L8.6 15.7a.25.25 0 00.4-.2v-3.25a.25.25 0 00-.25-.25h-3.5a.25.25 0 00-.25.25z"></path>
-      </svg>
-
-      <text x="50" y="38" class="header">${name}</text>
-      <text class="description" x="25" y="70">${
-        description ? description.slice(0, 60) : "No description provided"
-      }..</text>
-      
-
-      <g transform="translate(30, 100)">
-        <circle cx="0" cy="-5" r="6" fill="${primaryLanguage.color}" />
-        <text class="gray" x="15">${primaryLanguage.name}</text>
-      </g>
-      
-      <g transform="translate(${155 - shiftText}, 100)">
-        <svg y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16" fill="#586069">
-          <path fill-rule="evenodd" d="M8 .25a.75.75 0 01.673.418l1.882 3.815 4.21.612a.75.75 0 01.416 1.279l-3.046 2.97.719 4.192a.75.75 0 01-1.088.791L8 12.347l-3.766 1.98a.75.75 0 01-1.088-.79l.72-4.194L.818 6.374a.75.75 0 01.416-1.28l4.21-.611L7.327.668A.75.75 0 018 .25zm0 2.445L6.615 5.5a.75.75 0 01-.564.41l-3.097.45 2.24 2.184a.75.75 0 01.216.664l-.528 3.084 2.769-1.456a.75.75 0 01.698 0l2.77 1.456-.53-3.084a.75.75 0 01.216-.664l2.24-2.183-3.096-.45a.75.75 0 01-.564-.41L8 2.694v.001z"></path>
-        </svg>
-        <text class="gray" x="25">${kFormatter(stargazers.totalCount)}</text>
-      </g>
-
-      <g transform="translate(${220 - shiftText}, 100)">
-        <svg y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16" fill="#586069">
-          <path fill-rule="evenodd" d="M5 3.25a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm0 2.122a2.25 2.25 0 10-1.5 0v.878A2.25 2.25 0 005.75 8.5h1.5v2.128a2.251 2.251 0 101.5 0V8.5h1.5a2.25 2.25 0 002.25-2.25v-.878a2.25 2.25 0 10-1.5 0v.878a.75.75 0 01-.75.75h-4.5A.75.75 0 015 6.25v-.878zm3.75 7.378a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm3-8.75a.75.75 0 100-1.5.75.75 0 000 1.5z"></path>
-        </svg>
-        <text class="gray" x="25">${kFormatter(forkCount)}</text>
-      </g>
-    </svg>
-  `;
-};
+const { renderError } = require("../src/utils");
+const fetchRepo = require("../src/fetchRepo");
+const renderRepoCard = require("../src/renderRepoCard");
 
 module.exports = async (req, res) => {
-  const username = req.query.username;
-  const repo = req.query.repo;
+  const {
+    username,
+    repo,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+  } = req.query;
 
   let repoData;
   res.setHeader("Content-Type", "image/svg+xml");
@@ -135,5 +23,12 @@ module.exports = async (req, res) => {
     return res.send(renderError(err.message));
   }
 
-  res.send(renderRepoCard(repoData));
+  res.send(
+    renderRepoCard(repoData, {
+      title_color,
+      icon_color,
+      text_color,
+      bg_color,
+    })
+  );
 };

jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  clearMocks: true,
+};

package-lock.json

@@ -1,46 +0,0 @@
-{
-  "name": "github-readme-stats",
-  "version": "1.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "axios": {
-      "version": "0.19.2",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
-      "integrity": "sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==",
-      "dev": true,
-      "requires": {
-        "follow-redirects": "1.5.10"
-      }
-    },
-    "debug": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-      "dev": true,
-      "requires": {
-        "ms": "2.0.0"
-      }
-    },
-    "dotenv": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
-      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
-    },
-    "follow-redirects": {
-      "version": "1.5.10",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
-      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
-      "dev": true,
-      "requires": {
-        "debug": "=3.1.0"
-      }
-    },
-    "ms": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
-      "dev": true
-    }
-  }
-}

package.json

@@ -1,15 +1,21 @@
 {
   "name": "github-readme-stats",
   "version": "1.0.0",
-  "description": "",
+  "description": "Dynamically generate stats for your github readmes",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest",
+    "test:watch": "jest --watch"
   },
   "author": "Anurag Hazra",
   "license": "MIT",
   "devDependencies": {
-    "axios": "^0.19.2"
+    "@testing-library/dom": "^7.20.0",
+    "@testing-library/jest-dom": "^5.11.0",
+    "axios": "^0.19.2",
+    "axios-mock-adapter": "^1.18.1",
+    "css-to-object": "^1.1.0",
+    "jest": "^26.1.0"
   },
   "dependencies": {
     "dotenv": "^8.2.0"

readme.md

@@ -1,11 +1,17 @@
 ## Github Readme stats
 
+[![Test](https://github.com/anuraghazra/github-readme-stats/workflows/Test/badge.svg)](https://github.com/anuraghazra/github-readme-stats/actions)
+[![GitHub issues](https://img.shields.io/github/issues/anuraghazra/github-readme-stats?color=0088ff)](https://github.com/anuraghazra/github-readme-stats/issues)
+[![GitHub pull requests](https://img.shields.io/github/issues-pr/anuraghazra/github-readme-stats?color=0088ff)](https://github.com/anuraghazra/github-readme-stats/pulls)
+
 Get dynamically generated GitHub stats on your readmes!
 
 # Features
 
 - [Github Stats Card](#github-stats-card)
 - [Github Extra Pins](#github-extra-pins)
+- [Customization](#customization)
+- [Deploy Yourself](#deploy-on-your-own-vercel-instance)
 
 # Github Stats Card
 
@@ -13,12 +19,6 @@ Copy paste this into your markdown content, and that's it. Simple!
 
 change the `?username=` value to your GitHubs's username
 
-```md
-![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra)
-```
-
-_Psst, you can also use this code so that `github-readme-stats` gets proper credit :D and other people can also try it out!_
-
 ```md
 [![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra)](https://github.com/anuraghazra/github-readme-stats)
 ```
@@ -46,6 +46,25 @@ Other options:
 - `&hide_border=true` hide the border box if you don't like it :D.
 - `&line_height=30` control the line-height between text.
 
+### Customization
+
+You can customize the appearance of your `Stats Card` or `Repo Card` however you want with url params.
+
+Customization Options:
+
+| Option      | type      | Stats Card (default)   | Repo Card (default)    |
+| ----------- | --------- | ---------------------- | ---------------------- |
+| title_color | hex color | #2f80ed                | #2f80ed                |
+| text_color  | hex color | #333                   | #333                   |
+| icon_color  | hex color | #4c71f2                | #586069                |
+| bg_color    | hex color | rgba(255, 255, 255, 0) | rgba(255, 255, 255, 0) |
+
+- You can also customize the cards to be compatible with dark mode
+
+```md
+![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra&show_icons=true&title_color=fff&icon_color=79ff97&text_color=9f9f9f&bg_color=151515)
+```
+
 ### Demo
 
 - Default
@@ -60,6 +79,14 @@ Other options:
 
 ![Anurag's github stats](https://github-readme-stats.vercel.app/api?username=anuraghazra&hide=["issues"]&show_icons=true)
 
+- Customizing stats card
+
+![Anurag's github stats](https://github-readme-stats.vercel.app/api/?username=anuraghazra&show_icons=true&title_color=fff&icon_color=79ff97&text_color=9f9f9f&bg_color=151515)
+
+- Customizing repo card
+
+![Customized Card](https://github-readme-stats.vercel.app/api/pin?username=anuraghazra&repo=github-readme-stats&title_color=fff&icon_color=f9f9f9&text_color=9f9f9f&bg_color=151515)
+
 # Github Extra Pins
 
 Github extra pins allow you to pin more than 6 repositories in your profile using a GitHub readme profile.
@@ -93,6 +120,15 @@ You usually won't be able to layout the images side by side to do that you can u
 </a>
 ```
 
+## Deploy on your own vercel instance
+
+Since Github API only allows 5k requests per hour it is possible that my `https://github-readme-stats.vercel.app/api` could hit the rate limiter thats why if you want to host it on your own vercel server then you don't have to worry about anything. click on the deploy button to get started
+
+[![Deploy to Vercel](https://vercel.com/button)](https://vercel.com/import/project?template=https://github.com/anuraghazra/github-readme-stats)
+
+Make sure to add your own `GITHUB_TOKEN` in `Environment Variables`  
+[Github Docs: Creating a github personal token](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token)
+
 Contributions are welcomed! <3
 
 Made with :heart: and javascript.

src/fetchRepo.js

@@ -0,0 +1,63 @@
+const { request } = require("./utils");
+
+async function fetchRepo(username, reponame) {
+  if (!username || !reponame) {
+    throw new Error("Invalid username or reponame");
+  }
+
+  const res = await request({
+    query: `
+      fragment RepoInfo on Repository {
+        name
+        stargazers {
+          totalCount
+        }
+        description
+        primaryLanguage {
+          color
+          id
+          name
+        }
+        forkCount
+      }
+      query getRepo($login: String!, $repo: String!) {
+        user(login: $login) {
+          repository(name: $repo) {
+            ...RepoInfo
+          }
+        }
+        organization(login: $login) {
+          repository(name: $repo) {
+            ...RepoInfo
+          }
+        }
+      }
+    `,
+    variables: {
+      login: username,
+      repo: reponame,
+    },
+  });
+
+  const data = res.data.data;
+
+  if (!data.user && !data.organization) {
+    throw new Error("Not found");
+  }
+
+  if (data.organization === null && data.user) {
+    if (!data.user.repository) {
+      throw new Error("User Repository Not found");
+    }
+    return data.user.repository;
+  }
+
+  if (data.user === null && data.organization) {
+    if (!data.organization.repository) {
+      throw new Error("Organization Repository Not found");
+    }
+    return data.organization.repository;
+  }
+}
+
+module.exports = fetchRepo;

src/fetchStats.js

@@ -0,0 +1,66 @@
+const { request } = require("./utils");
+require("dotenv").config();
+
+async function fetchStats(username) {
+  if (!username) throw Error("Invalid username");
+
+  const res = await request({
+    query: `
+      query userInfo($login: String!) {
+        user(login: $login) {
+          name
+          repositoriesContributedTo(first: 100, contributionTypes: [COMMIT, ISSUE, PULL_REQUEST, REPOSITORY]) {
+            totalCount
+          }
+          contributionsCollection {
+            totalCommitContributions
+          }
+          pullRequests(first: 100) {
+            totalCount
+          }
+          issues(first: 100) {
+            totalCount
+          }
+          repositories(first: 100) {
+            nodes {
+              stargazers {
+                totalCount
+              }
+            }
+          }
+        }
+      }
+    `,
+    variables: { login: username }
+  });
+
+  const stats = {
+    name: "",
+    totalPRs: 0,
+    totalCommits: 0,
+    totalIssues: 0,
+    totalStars: 0,
+    contributedTo: 0,
+  };
+
+  if (res.data.errors) {
+    console.log(res.data.errors);
+    throw Error("Could not fetch user");
+  }
+
+  const user = res.data.data.user;
+
+  stats.name = user.name;
+  stats.totalIssues = user.issues.totalCount;
+  stats.totalCommits = user.contributionsCollection.totalCommitContributions;
+  stats.totalPRs = user.pullRequests.totalCount;
+  stats.contributedTo = user.repositoriesContributedTo.totalCount;
+
+  stats.totalStars = user.repositories.nodes.reduce((prev, curr) => {
+    return prev + curr.stargazers.totalCount;
+  }, 0);
+
+  return stats;
+}
+
+module.exports = fetchStats;

src/renderRepoCard.js

@@ -0,0 +1,66 @@
+const { kFormatter, encodeHTML, isValidHexColor } = require("../src/utils");
+
+const renderRepoCard = (repo, options = {}) => {
+  const { name, description, primaryLanguage, stargazers, forkCount } = repo;
+  const { title_color, icon_color, text_color, bg_color } = options;
+
+  const height = 120;
+  const shiftText = primaryLanguage.name.length > 15 ? 0 : 30;
+
+  let desc = description || "No description provided";
+  if (desc.length > 55) {
+    desc = `${description.slice(0, 55)}..`;
+  }
+
+  const titleColor =
+    (isValidHexColor(title_color) && `#${title_color}`) || "#2f80ed";
+  const iconColor =
+    (isValidHexColor(icon_color) && `#${icon_color}`) || "#586069";
+  const textColor = (isValidHexColor(text_color) && `#${text_color}`) || "#333";
+  const bgColor = (isValidHexColor(bg_color) && `#${bg_color}`) || "#FFFEFE";
+
+  const totalStars = kFormatter(stargazers.totalCount);
+  const totalForks = kFormatter(forkCount);
+  return `
+    <svg width="400" height="${height}" viewBox="0 0 400 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <style>
+      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${titleColor} }
+      .description { font: 400 13px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor} }
+      .gray { font: 400 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor} }
+      .icon { fill: ${iconColor} }
+      </style>
+      <rect data-testid="card-border" x="0.5" y="0.5" width="399" height="99%" rx="4.5" fill="${bgColor}" stroke="#E4E2E2"/>
+      <svg class="icon" x="25" y="25" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+        <path fill-rule="evenodd" d="M2 2.5A2.5 2.5 0 014.5 0h8.75a.75.75 0 01.75.75v12.5a.75.75 0 01-.75.75h-2.5a.75.75 0 110-1.5h1.75v-2h-8a1 1 0 00-.714 1.7.75.75 0 01-1.072 1.05A2.495 2.495 0 012 11.5v-9zm10.5-1V9h-8c-.356 0-.694.074-1 .208V2.5a1 1 0 011-1h8zM5 12.25v3.25a.25.25 0 00.4.2l1.45-1.087a.25.25 0 01.3 0L8.6 15.7a.25.25 0 00.4-.2v-3.25a.25.25 0 00-.25-.25h-3.5a.25.25 0 00-.25.25z"></path>
+      </svg>
+
+      <text x="50" y="38" class="header">${name}</text>
+      <text class="description" x="25" y="70">${encodeHTML(desc)}</text>
+      
+      <g transform="translate(30, 100)">
+        <circle data-testid="lang-color" cx="0" cy="-5" r="6" fill="${
+          primaryLanguage.color
+        }" />
+        <text data-testid="lang" class="gray" x="15">${
+          primaryLanguage.name
+        }</text>
+      </g>
+
+      <g transform="translate(${155 - shiftText}, 100)">
+        <svg class="icon" y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+          <path fill-rule="evenodd" d="M8 .25a.75.75 0 01.673.418l1.882 3.815 4.21.612a.75.75 0 01.416 1.279l-3.046 2.97.719 4.192a.75.75 0 01-1.088.791L8 12.347l-3.766 1.98a.75.75 0 01-1.088-.79l.72-4.194L.818 6.374a.75.75 0 01.416-1.28l4.21-.611L7.327.668A.75.75 0 018 .25zm0 2.445L6.615 5.5a.75.75 0 01-.564.41l-3.097.45 2.24 2.184a.75.75 0 01.216.664l-.528 3.084 2.769-1.456a.75.75 0 01.698 0l2.77 1.456-.53-3.084a.75.75 0 01.216-.664l2.24-2.183-3.096-.45a.75.75 0 01-.564-.41L8 2.694v.001z"></path>
+        </svg>
+        <text data-testid="stargazers" class="gray" x="25">${totalStars}</text>
+      </g>
+
+      <g transform="translate(${220 - shiftText}, 100)">
+        <svg class="icon" y="-12" viewBox="0 0 16 16" version="1.1" width="16" height="16">
+          <path fill-rule="evenodd" d="M5 3.25a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm0 2.122a2.25 2.25 0 10-1.5 0v.878A2.25 2.25 0 005.75 8.5h1.5v2.128a2.251 2.251 0 101.5 0V8.5h1.5a2.25 2.25 0 002.25-2.25v-.878a2.25 2.25 0 10-1.5 0v.878a.75.75 0 01-.75.75h-4.5A.75.75 0 015 6.25v-.878zm3.75 7.378a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm3-8.75a.75.75 0 100-1.5.75.75 0 000 1.5z"></path>
+        </svg>
+        <text data-testid="forkcount" class="gray" x="25">${totalForks}</text>
+      </g>
+    </svg>
+  `;
+};
+
+module.exports = renderRepoCard;

src/renderStatsCard.js

@@ -0,0 +1,109 @@
+const { kFormatter, isValidHexColor } = require("../src/utils");
+
+const createTextNode = ({ icon, label, value, lineHeight, id }) => {
+  const classname = icon === "★" && "star-icon";
+  const kValue = kFormatter(value);
+  return `
+    <tspan x="25" dy="${lineHeight}" class="stat bold">
+    <tspan data-testid="icon" class="icon ${classname}">${icon}</tspan> ${label}:</tspan>
+    <tspan data-testid="${id}" x="155" dy="0" class="stat">${kValue}</tspan>
+  `;
+};
+
+const renderStatsCard = (stats = {}, options = { hide: [] }) => {
+  const {
+    name,
+    totalStars,
+    totalCommits,
+    totalIssues,
+    totalPRs,
+    contributedTo,
+  } = stats;
+  const {
+    hide = [],
+    show_icons = false,
+    hide_border = false,
+    line_height = 25,
+    title_color,
+    icon_color,
+    text_color,
+    bg_color,
+  } = options;
+
+  const lheight = parseInt(line_height);
+
+  const titleColor =
+    (isValidHexColor(title_color) && `#${title_color}`) || "#2f80ed";
+  const iconColor =
+    (isValidHexColor(icon_color) && `#${icon_color}`) || "#4c71f2";
+  const textColor = (isValidHexColor(text_color) && `#${text_color}`) || "#333";
+  const bgColor = (isValidHexColor(bg_color) && `#${bg_color}`) || "#FFFEFE";
+
+  const STAT_MAP = {
+    stars: createTextNode({
+      icon: "★",
+      label: "Total Stars",
+      value: totalStars,
+      lineHeight: lheight,
+      id: "stars",
+    }),
+    commits: createTextNode({
+      icon: "🕗",
+      label: "Total Commits",
+      value: totalCommits,
+      lineHeight: lheight,
+      id: "commits",
+    }),
+    prs: createTextNode({
+      icon: "🔀",
+      label: "Total PRs",
+      value: totalPRs,
+      lineHeight: lheight,
+      id: "prs",
+    }),
+    issues: createTextNode({
+      icon: "ⓘ",
+      label: "Total Issues",
+      value: totalIssues,
+      lineHeight: lheight,
+      id: "issues",
+    }),
+    contribs: createTextNode({
+      icon: "📕",
+      label: "Contributed to",
+      value: contributedTo,
+      lineHeight: lheight,
+      id: "contribs",
+    }),
+  };
+
+  const statItems = Object.keys(STAT_MAP)
+    .filter((key) => !hide.includes(key))
+    .map((key) => STAT_MAP[key]);
+
+  const height = 45 + (statItems.length + 1) * lheight;
+
+  const border = `<rect data-testid="card-border" x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="${bgColor}" stroke="#E4E2E2"/>`;
+  return `
+    <svg width="495" height="${height}" viewBox="0 0 495 ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <style>
+      .header { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${titleColor}; }
+      .stat { font: 600 14px 'Segoe UI', Ubuntu, Sans-Serif; fill: ${textColor}; }
+      .star-icon { font: 600 18px 'Segoe UI', Ubuntu, Sans-Serif; }
+      .bold { font-weight: 700 }
+      .icon {
+        fill: ${iconColor};
+        display: ${!!show_icons ? "block" : "none"};
+      }
+      </style>
+      ${hide_border ? "" : border}
+     
+      <text x="25" y="35" class="header">${name}'s GitHub Stats</text>
+      <text y="45">
+        ${statItems.toString().replace(/\,/gm, "")}
+      </text>
+    </svg>
+  `;
+};
+
+module.exports = renderStatsCard;

src/utils.js

@@ -0,0 +1,51 @@
+const axios = require("axios");
+
+const renderError = (message) => {
+  return `
+    <svg width="495" height="100" viewBox="0 0 495 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <style>
+    .text { font: 600 16px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
+    .small { font: 600 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: #252525 }
+    </style>
+    <rect x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>
+    <text x="25" y="45" class="text">Something went wrong! file an issue at https://git.io/JJmN9</text>
+    <text id="message" x="25" y="65" class="text small">${message}</text>
+    </svg>
+  `;
+};
+
+// https://stackoverflow.com/a/48073476/10629172
+function encodeHTML(str) {
+  return str.replace(/[\u00A0-\u9999<>&](?!#)/gim, function (i) {
+    return "&#" + i.charCodeAt(0) + ";";
+  });
+}
+
+function kFormatter(num) {
+  return Math.abs(num) > 999
+    ? Math.sign(num) * (Math.abs(num) / 1000).toFixed(1) + "k"
+    : Math.sign(num) * Math.abs(num);
+}
+
+function isValidHexColor(hexColor) {
+  return new RegExp(
+    /^([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}|[A-Fa-f0-9]{4})$/
+  ).test(hexColor);
+}
+
+function request(data) {
+  return new Promise((resolve, reject) => {
+    axios({
+      url: "https://api.github.com/graphql",
+      method: "post",
+      headers: {
+        Authorization: `bearer ${process.env.GITHUB_TOKEN}`,
+      },
+      data,
+    })
+      .then((response) => resolve(response))
+      .catch((error) => reject(error));
+  });
+}
+
+module.exports = { renderError, kFormatter, encodeHTML, isValidHexColor, request };

tests/api.test.js

@@ -0,0 +1,122 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const api = require("../api/index");
+const renderStatsCard = require("../src/renderStatsCard");
+const { renderError } = require("../src/utils");
+
+const stats = {
+  name: "Anurag Hazra",
+  totalStars: 100,
+  totalCommits: 200,
+  totalIssues: 300,
+  totalPRs: 400,
+  contributedTo: 500,
+};
+
+const data = {
+  data: {
+    user: {
+      name: stats.name,
+      repositoriesContributedTo: { totalCount: stats.contributedTo },
+      contributionsCollection: { totalCommitContributions: stats.totalCommits },
+      pullRequests: { totalCount: stats.totalPRs },
+      issues: { totalCount: stats.totalIssues },
+      repositories: {
+        nodes: [{ stargazers: { totalCount: 100 } }],
+      },
+    },
+  },
+};
+
+const error = {
+  errors: [
+    {
+      type: "NOT_FOUND",
+      path: ["user"],
+      locations: [],
+      message: "Could not fetch user",
+    },
+  ],
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test /api/", () => {
+  it("should test the request", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderStatsCard(stats, { ...req.query }));
+  });
+
+  it("should render error card on error", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, error);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderError(error.errors[0].message));
+  });
+
+  it("should get the query options", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        hide: `["issues","prs","contribs"]`,
+        show_icons: true,
+        hide_border: true,
+        line_height: 100,
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    await api(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderStatsCard(stats, {
+        hide: ["issues", "prs", "contribs"],
+        show_icons: true,
+        hide_border: true,
+        line_height: 100,
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+      })
+    );
+  });
+});

tests/fetchRepo.test.js

@@ -0,0 +1,83 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const fetchRepo = require("../src/fetchRepo");
+
+const data_repo = {
+  repository: {
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+const data_user = {
+  data: {
+    user: { repository: data_repo },
+    organization: null,
+  },
+};
+const data_org = {
+  data: {
+    user: null,
+    organization: { repository: data_repo },
+  },
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test fetchRepo", () => {
+  it("should fetch correct user repo", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    let repo = await fetchRepo("anuraghazra", "convoychat");
+    expect(repo).toStrictEqual(data_repo);
+  });
+
+  it("should fetch correct org repo", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data_org);
+
+    let repo = await fetchRepo("anuraghazra", "convoychat");
+    expect(repo).toStrictEqual(data_repo);
+  });
+
+  it("should throw error if user is found but repo is null", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: { repository: null }, organization: null } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "User Repository Not found"
+    );
+  });
+
+  it("should throw error if org is found but repo is null", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: { repository: null } } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "Organization Repository Not found"
+    );
+  });
+
+  it("should throw error if both user & org data not found", async () => {
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: null } });
+
+    await expect(fetchRepo("anuraghazra", "convoychat")).rejects.toThrow(
+      "Not found"
+    );
+  });
+});

tests/fetchStats.test.js

@@ -0,0 +1,66 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const fetchStats = require("../src/fetchStats");
+
+const data = {
+  data: {
+    user: {
+      name: "Anurag Hazra",
+      repositoriesContributedTo: { totalCount: 61 },
+      contributionsCollection: { totalCommitContributions: 100 },
+      pullRequests: { totalCount: 300 },
+      issues: { totalCount: 200 },
+      repositories: {
+        nodes: [
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 100 } },
+          { stargazers: { totalCount: 50 } },
+          { stargazers: { totalCount: 50 } },
+        ],
+      },
+    },
+  },
+};
+
+const error = {
+  errors: [
+    {
+      type: "NOT_FOUND",
+      path: ["user"],
+      locations: [],
+      message: "Could not resolve to a User with the login of 'noname'.",
+    },
+  ],
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test fetchStats", () => {
+  it("should fetch correct stats", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, data);
+
+    let stats = await fetchStats("anuraghazra");
+    expect(stats).toStrictEqual({
+      contributedTo: 61,
+      name: "Anurag Hazra",
+      totalCommits: 100,
+      totalIssues: 200,
+      totalPRs: 300,
+      totalStars: 400,
+    });
+  });
+
+  it("should throw error", async () => {
+    mock.onPost("https://api.github.com/graphql").reply(200, error);
+
+    await expect(fetchStats("anuraghazra")).rejects.toThrow(
+      "Could not fetch user"
+    );
+  });
+});

tests/pin.test.js

@@ -0,0 +1,123 @@
+require("@testing-library/jest-dom");
+const axios = require("axios");
+const MockAdapter = require("axios-mock-adapter");
+const pin = require("../api/pin");
+const renderRepoCard = require("../src/renderRepoCard");
+const { renderError } = require("../src/utils");
+
+const data_repo = {
+  repository: {
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+const data_user = {
+  data: {
+    user: { repository: data_repo.repository },
+    organization: null,
+  },
+};
+
+const mock = new MockAdapter(axios);
+
+afterEach(() => {
+  mock.reset();
+});
+
+describe("Test /api/pin", () => {
+  it("should test the request", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderRepoCard(data_repo.repository));
+  });
+
+  it("should get the query options", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+        title_color: "fff",
+        icon_color: "fff",
+        text_color: "fff",
+        bg_color: "fff",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock.onPost("https://api.github.com/graphql").reply(200, data_user);
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderRepoCard(data_repo.repository, { ...req.query })
+    );
+  });
+
+  it("should render error card if user repo not found", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: { repository: null }, organization: null } });
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(renderError("User Repository Not found"));
+  });
+
+  it("should render error card if org repo not found", async () => {
+    const req = {
+      query: {
+        username: "anuraghazra",
+        repo: "convoychat",
+      },
+    };
+    const res = {
+      setHeader: jest.fn(),
+      send: jest.fn(),
+    };
+    mock
+      .onPost("https://api.github.com/graphql")
+      .reply(200, { data: { user: null, organization: { repository: null } } });
+
+    await pin(req, res);
+
+    expect(res.setHeader).toBeCalledWith("Content-Type", "image/svg+xml");
+    expect(res.send).toBeCalledWith(
+      renderError("Organization Repository Not found")
+    );
+  });
+});

tests/renderRepoCard.test.js

@@ -0,0 +1,139 @@
+require("@testing-library/jest-dom");
+const cssToObject = require("css-to-object");
+const renderRepoCard = require("../src/renderRepoCard");
+
+const { queryByTestId } = require("@testing-library/dom");
+
+const data_repo = {
+  repository: {
+    name: "convoychat",
+    stargazers: { totalCount: 38000 },
+    description: "Help us take over the world! React + TS + GraphQL Chat App",
+    primaryLanguage: {
+      color: "#2b7489",
+      id: "MDg6TGFuZ3VhZ2UyODc=",
+      name: "TypeScript",
+    },
+    forkCount: 100,
+  },
+};
+
+describe("Test renderRepoCard", () => {
+  it("should render correctly", () => {
+    document.body.innerHTML = renderRepoCard(data_repo.repository);
+
+    expect(document.getElementsByClassName("header")[0]).toHaveTextContent(
+      "convoychat"
+    );
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Help us take over the world! React + TS + GraphQL Chat .."
+    );
+    expect(queryByTestId(document.body, "stargazers")).toHaveTextContent("38k");
+    expect(queryByTestId(document.body, "forkcount")).toHaveTextContent("100");
+    expect(queryByTestId(document.body, "lang")).toHaveTextContent(
+      "TypeScript"
+    );
+    expect(queryByTestId(document.body, "lang-color")).toHaveAttribute(
+      "fill",
+      "#2b7489"
+    );
+  });
+
+  it("should trim description", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      description:
+        "Very long long long long long long long long text it should trim it",
+    });
+
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Very long long long long long long long long text it sh.."
+    );
+
+    // Should not trim
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      description: "Small text should not trim",
+    });
+
+    expect(document.getElementsByClassName("description")[0]).toHaveTextContent(
+      "Small text should not trim"
+    );
+  });
+
+  it("should shift the text position depending on language length", () => {
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      primaryLanguage: {
+        ...data_repo.repository.primaryLanguage,
+        name: "Jupyter Notebook",
+      },
+    });
+
+    expect(document.getElementsByTagName("g")[1]).toHaveAttribute(
+      "transform",
+      "translate(155, 100)"
+    );
+
+    // Small lang
+    document.body.innerHTML = renderRepoCard({
+      ...data_repo.repository,
+      primaryLanguage: {
+        ...data_repo.repository.primaryLanguage,
+        name: "Ruby",
+      },
+    });
+
+    expect(document.getElementsByTagName("g")[1]).toHaveAttribute(
+      "transform",
+      "translate(125, 100)"
+    );
+  });
+
+  it("should render default colors properly", () => {
+    document.body.innerHTML = renderRepoCard(data_repo.repository);
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".description"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe("#2f80ed");
+    expect(statClassStyles.fill).toBe("#333");
+    expect(iconClassStyles.fill).toBe("#586069");
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#FFFEFE"
+    );
+  });
+
+  it("should render custom colors properly", () => {
+    const customColors = {
+      title_color: "5a0",
+      icon_color: "1b998b",
+      text_color: "9991",
+      bg_color: "252525",
+    };
+
+    document.body.innerHTML = renderRepoCard(data_repo.repository, {
+      ...customColors,
+    });
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".description"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe(`#${customColors.title_color}`);
+    expect(statClassStyles.fill).toBe(`#${customColors.text_color}`);
+    expect(iconClassStyles.fill).toBe(`#${customColors.icon_color}`);
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#252525"
+    );
+  });
+});

tests/renderStatsCard.test.js

@@ -0,0 +1,100 @@
+require("@testing-library/jest-dom");
+const cssToObject = require("css-to-object");
+const renderStatsCard = require("../src/renderStatsCard");
+
+const { getByTestId, queryByTestId } = require("@testing-library/dom");
+
+describe("Test renderStatsCard", () => {
+  const stats = {
+    name: "Anurag Hazra",
+    totalStars: 100,
+    totalCommits: 200,
+    totalIssues: 300,
+    totalPRs: 400,
+    contributedTo: 500,
+  };
+
+  it("should render correctly", () => {
+    document.body.innerHTML = renderStatsCard(stats);
+
+    expect(document.getElementsByClassName("header")[0].textContent).toBe(
+      "Anurag Hazra's GitHub Stats"
+    );
+
+    expect(
+      document.body.getElementsByTagName("svg")[0].getAttribute("height")
+    ).toBe("195");
+    expect(getByTestId(document.body, "stars").textContent).toBe("100");
+    expect(getByTestId(document.body, "commits").textContent).toBe("200");
+    expect(getByTestId(document.body, "issues").textContent).toBe("300");
+    expect(getByTestId(document.body, "prs").textContent).toBe("400");
+    expect(getByTestId(document.body, "contribs").textContent).toBe("500");
+    expect(queryByTestId(document.body, "card-border")).toBeInTheDocument();
+  });
+
+  it("should hide individual stats", () => {
+    document.body.innerHTML = renderStatsCard(stats, {
+      hide: "['issues', 'prs', 'contribs']",
+    });
+
+    expect(
+      document.body.getElementsByTagName("svg")[0].getAttribute("height")
+    ).toBe("120");
+    expect(queryByTestId(document.body, "stars")).toBeDefined();
+    expect(queryByTestId(document.body, "commits")).toBeDefined();
+    expect(queryByTestId(document.body, "issues")).toBeNull();
+    expect(queryByTestId(document.body, "prs")).toBeNull();
+    expect(queryByTestId(document.body, "contribs")).toBeNull();
+  });
+
+  it("should hide_border", () => {
+    document.body.innerHTML = renderStatsCard(stats, { hide_border: true });
+
+    expect(queryByTestId(document.body, "card-border")).not.toBeInTheDocument();
+  });
+
+  it("should render default colors properly", () => {
+    document.body.innerHTML = renderStatsCard(stats);
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".stat"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe("#2f80ed");
+    expect(statClassStyles.fill).toBe("#333");
+    expect(iconClassStyles.fill).toBe("#4c71f2");
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#FFFEFE"
+    );
+  });
+
+  it("should render custom colors properly", () => {
+    const customColors = {
+      title_color: "5a0",
+      icon_color: "1b998b",
+      text_color: "9991",
+      bg_color: "252525",
+    };
+
+    document.body.innerHTML = renderStatsCard(stats, { ...customColors });
+
+    const styleTag = document.querySelector("style");
+    const stylesObject = cssToObject(styleTag.innerHTML);
+
+    const headerClassStyles = stylesObject[".header"];
+    const statClassStyles = stylesObject[".stat"];
+    const iconClassStyles = stylesObject[".icon"];
+
+    expect(headerClassStyles.fill).toBe(`#${customColors.title_color}`);
+    expect(statClassStyles.fill).toBe(`#${customColors.text_color}`);
+    expect(iconClassStyles.fill).toBe(`#${customColors.icon_color}`);
+    expect(queryByTestId(document.body, "card-border")).toHaveAttribute(
+      "fill",
+      "#252525"
+    );
+  });
+});

tests/utils.test.js

@@ -0,0 +1,26 @@
+const { kFormatter, encodeHTML, renderError } = require("../src/utils");
+
+describe("Test utils.js", () => {
+  it("should test kFormatter", () => {
+    expect(kFormatter(1)).toBe(1);
+    expect(kFormatter(-1)).toBe(-1);
+    expect(kFormatter(500)).toBe(500);
+    expect(kFormatter(1000)).toBe("1k");
+    expect(kFormatter(10000)).toBe("10k");
+    expect(kFormatter(12345)).toBe("12.3k");
+    expect(kFormatter(9900000)).toBe("9900k");
+  });
+
+  it("should test encodeHTML", () => {
+    expect(encodeHTML(`<html>hello world<,.#4^&^@%!))`)).toBe(
+      "&#60;html&#62;hello world&#60;,.#4^&#38;^@%!))"
+    );
+  });
+
+  it("should test renderError", () => {
+    document.body.innerHTML = renderError("Something went wrong");
+    expect(document.getElementById("message").textContent).toBe(
+      "Something went wrong"
+    );
+  });
+});

utils.js

@@ -1,21 +0,0 @@
-const renderError = (message) => {
-  return `
-    <svg width="495" height="100" viewBox="0 0 495 100" fill="none" xmlns="http://www.w3.org/2000/svg">
-    <style>
-    .text { font: 600 16px 'Segoe UI', Ubuntu, Sans-Serif; fill: #2F80ED }
-    .small { font: 600 12px 'Segoe UI', Ubuntu, Sans-Serif; fill: #252525 }
-    </style>
-    <rect x="0.5" y="0.5" width="494" height="99%" rx="4.5" fill="#FFFEFE" stroke="#E4E2E2"/>
-    <text x="25" y="45" class="text">Something went wrong! file an issue at https://git.io/JJmN9</text>
-    <text x="25" y="65" class="text small">${message}</text>
-    </svg>
-  `;
-};
-
-function kFormatter(num) {
-  return Math.abs(num) > 999
-    ? Math.sign(num) * (Math.abs(num) / 1000).toFixed(1) + "k"
-    : Math.sign(num) * Math.abs(num);
-}
-
-module.exports = { renderError, kFormatter };