Run test in CI

.travis.yml

@@ -6,5 +6,6 @@ cache: yarn
 script:
   - yarn
   - yarn typecheck
+  - yarn test
 notifications:
   email: false

__tests__/page.spec.ts

@@ -0,0 +1,12 @@
+jest.mock('puppeteer');
+import { PageProvider } from "../src/page";
+
+describe('PageProvider', () => {
+  it('should return the same page instance', async () => {
+    const pageProvider = new PageProvider();
+    const pageA = await pageProvider.getPage();
+    const pageB = await pageProvider.getPage();
+
+    expect(pageA).toEqual(pageB);
+  })
+});

package.json

@@ -13,13 +13,14 @@
     "build": "rm -rf dist && yarn build:es5 && yarn build:es2015",
     "build:example": "rm -rf example/dist && tsc --project build/tsconfig.example.json",
     "typecheck": "tsc --noEmit --project tsconfig.json",
-    "test": "jest"
+    "test": "jest -c ./build/jest.config.js"
   },
   "dependencies": {
     "puppeteer": "^1.13.0",
     "tslib": "^1.9.3"
   },
   "devDependencies": {
+    "@types/jest": "^24.0.11",
     "@types/puppeteer": "^1.12.3",
     "jest": "^24.5.0",
     "ts-node-dev": "^1.0.0-pre.32",

src/page.ts

@@ -1,5 +1,4 @@
-import puppeteer, { Browser } from 'puppeteer';
-import { Page } from "puppeteer";
+import puppeteer, { Browser, Page } from 'puppeteer';
 import { DEBUG } from './config';
 
 export class PageProvider {

tsconfig.json

@@ -1,28 +1,12 @@
 {
   "compilerOptions": {
     "lib": ["dom", "es6"],
-    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
-    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
-    // "allowJs": true,                       /* Allow javascript files to be compiled. */
-    // "checkJs": true,                       /* Report errors in .js files. */
-    "declaration": true,                   /* Generates corresponding '.d.ts' file. */
-    "removeComments": true,                /* Do not emit comments to output. */
-    "strict": true,                           /* Enable all strict type-checking options. */
-    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
-    // "strictNullChecks": true,              /* Enable strict null checks. */
-    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
-    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
-    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
-    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
-
-    /* Additional Checks */
-    // "noUnusedLocals": true,                /* Report errors on unused locals. */
-    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
-    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
-    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
-
-    "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    "target": "es5",
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "strict": true,
+    "moduleResolution": "node",
     "esModuleInterop": true
   }
 }

yarn.lock

@@ -314,6 +314,18 @@
   resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.0.tgz#2cc2ca41051498382b43157c8227fea60363f94a"
   integrity sha512-ohkhb9LehJy+PA40rDtGAji61NCgdtKLAlFoYp4cnuuQEswwdK3vz9SOIkkyc3wrk8dzjphQApNs56yyXLStaQ==
 
+"@types/jest-diff@*":
+  version "20.0.1"
+  resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
+  integrity sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==
+
+"@types/jest@^24.0.11":
+  version "24.0.11"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.11.tgz#1f099bea332c228ea6505a88159bfa86a5858340"
+  integrity sha512-2kLuPC5FDnWIDvaJBzsGTBQaBbnDweznicvK7UGYzlIJP4RJR2a4A/ByLUXEyEgag6jz8eHdlWExGDtH3EYUXQ==
+  dependencies:
+    "@types/jest-diff" "*"
+
 "@types/node@*":
   version "11.11.4"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.11.4.tgz#8808bd5a82bbf6f5d412eff1c228d178e7c24bb3"