Add tests and update build generation

.github/workflows/size.yml

@@ -0,0 +1,17 @@
+name: "size"
+on:
+  pull_request:
+    branches:
+      - master
+jobs:
+  size:
+    runs-on: ubuntu-latest
+    env:
+      CI_JOB_NUMBER: 1
+    steps:
+      - uses: actions/checkout@v1
+      - run: |
+          git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
+      - uses: ./
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -1,20 +1,8 @@
 name: "test"
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
+on: [push, pull_request]
 jobs:
-  test:
+  size:
     runs-on: ubuntu-latest
-    env:
-      CI_JOB_NUMBER: 1
     steps:
       - uses: actions/checkout@v1
-      - run: |
-          git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
-      - uses: ./
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+      - run: npm run test

jest.config.js

@@ -1,11 +1,13 @@
+// @ts-nocheck
+
 module.exports = {
   clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
-  testEnvironment: 'node',
-  testMatch: ['**/*.test.ts'],
-  testRunner: 'jest-circus/runner',
+  moduleFileExtensions: ["js", "ts"],
+  testEnvironment: "node",
+  testMatch: ["**/*.spec.ts"],
+  testRunner: "jest-circus/runner",
   transform: {
-    '^.+\\.ts$': 'ts-jest'
+    "^.+\\.ts$": "ts-jest"
   },
   verbose: true
-}
+};

package.json

@@ -10,7 +10,7 @@
     "lint": "eslint src/**/*.ts",
     "test": "jest",
     "build": "ncc build src/main.ts -o dist",
-    "size": "size-limit --json"
+    "size": "npm run build && size-limit"
   },
   "size-limit": [
     {

src/Git.ts

@@ -12,7 +12,7 @@ class Git {
 
     await exec("npm install");
     await exec("npm run build");
-    const status = await exec("npx size-limit --json", [], {
+    const status = await exec("npm run size -- --json", [], {
       windowsVerbatimArguments: true,
       ignoreReturnCode: true,
       listeners: {

src/SizeLimit.spec.ts

@@ -0,0 +1,58 @@
+import SizeLimit from "./SizeLimit";
+
+describe("SizeLimit", () => {
+  test("should parse size-limit output properly", () => {
+    const limit = new SizeLimit();
+    const output = JSON.stringify([
+      {
+        name: "dist/index.js",
+        passed: true,
+        size: 110894,
+        running: 0.10210999999999999,
+        loading: 2.1658984375
+      }
+    ]);
+
+    expect(limit.parseResults(output)).toEqual({
+      "dist/index.js": {
+        loading: 2.1658984375,
+        name: "dist/index.js",
+        running: 0.10210999999999999,
+        size: 110894,
+        total: 2.2680084375000003
+      }
+    });
+  });
+
+  test("should format size-limit results properly", () => {
+    const limit = new SizeLimit();
+    const base = {
+      "dist/index.js": {
+        name: "dist/index.js",
+        size: 110894,
+        running: 0.10210999999999999,
+        loading: 2.1658984375,
+        total: 2.2680084375000003
+      }
+    };
+    const current = {
+      "dist/index.js": {
+        name: "dist/index.js",
+        size: 100894,
+        running: 0.20210999999999999,
+        loading: 2.5658984375,
+        total: 2.7680084375000003
+      }
+    };
+
+    expect(limit.formatResults(base, current)).toEqual([
+      [
+        "dist/index.js",
+        "98.53 KB (-9.92% 🔽)",
+        "2.6 s (+15.59% 🔺)",
+        "203 ms (+49.48% 🔺)",
+        "2.8 s"
+      ]
+    ]);
+  });
+});

src/main.ts

@@ -12,6 +12,7 @@ const TABLE_HEADER = [
   "Running time (snapdragon)",
   "Total time"
 ];
+const SIZE_LIMIT_URL = "https://github.com/ai/size-limit";
 
 async function run() {
   try {
@@ -34,7 +35,7 @@ async function run() {
     const number = context.payload.pull_request.number;
     const event = status > 0 ? "REQUEST_CHANGES" : "COMMENT";
     const body = [
-      "## [size-limit](https://github.com/ai/size-limit) report",
+      `## [size-limit](${SIZE_LIMIT_URL}) report`,
       table([TABLE_HEADER, ...limit.formatResults(base, current)])
     ].join("\r\n");