fix: add UTs

Author: kobenguyent

.github/workflows/npm-publish.yml

@@ -10,6 +10,7 @@ on:
       - master
 
 jobs:
+
   publish-npm:
     runs-on: ubuntu-latest
     steps:

.github/workflows/test.yml

@@ -0,0 +1,23 @@
+name: Unit tests
+
+on: [push]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x, 18.x]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: run unit tests
+        run: |
+          npm i
+          npm test

.gitignore

@@ -63,3 +63,4 @@ typings/
 #webstorm
 .idea
 dist
+coverage

__test__/index.spec.ts

@@ -0,0 +1,77 @@
+import ResembleHelper from "../src";
+const { container } = require('codeceptjs');
+const helpers = container.helpers();
+
+let helper = new ResembleHelper({	baseFolder: 'string',
+    diffFolder: 'string',
+    screenshotFolder: 'string',
+    prepareBaseImage: 'string'})
+
+describe('_getHelper()', () => {
+    test('should return error when no matching helper found', () => {
+        try {
+            helper._getHelper()
+        } catch (e: any) {
+            expect(e.message).toEqual('No matching helper found. Supported helpers: Playwright/Puppeteer/WebDriver/TestCafe/Appium')
+        }
+    });
+
+    test('should return matching helper', () => {
+        helpers['Playwright'] = { hello: 1 }
+        expect(helper._getHelper()).toEqual({ hello: 1 })
+    });
+})
+
+
+describe('_getPrepareBaseImage()', () => {
+    beforeAll(() => {
+        helpers['Playwright'] = { hello: 1 }
+    })
+    test('should return false when no prepareBaseImage is provided', () => {
+        expect(helper._getPrepareBaseImage({ hello: 1 })).toBeFalsy()
+    });
+
+    test('should return true when prepareBaseImage matched with config', () => {
+        expect(helper._getPrepareBaseImage({ prepareBaseImage: 'string' })).toBeTruthy()
+    });
+})
+
+describe('_getDiffImagePath()', () => {
+    beforeAll(() => {
+        helpers['Playwright'] = { hello: 1 }
+    })
+    test('should return diffImagePath', () => {
+        expect(helper._getDiffImagePath('hello')).toContain('Diff_hello.png')
+    });
+
+})
+
+describe('_getActualImagePath()', () => {
+    beforeAll(() => {
+        helpers['Playwright'] = { hello: 1 }
+    })
+    test('should return ActualImagePath', () => {
+        expect(helper._getActualImagePath('hello')).toContain('hello')
+    });
+
+})
+
+describe('_getBaseImagePath()', () => {
+    beforeAll(() => {
+        helpers['Playwright'] = { hello: 1 }
+    })
+    test('should return BaseImagePath', () => {
+        expect(helper._getBaseImagePath('hello', {})).toContain('hello')
+    });
+
+})
+
+describe('resolvePath()', () => {
+    beforeAll(() => {
+        helpers['Playwright'] = { hello: 1 }
+    })
+    test('should return resolvePath', () => {
+        expect(helper.resolvePath('hello')).toContain('hello')
+    });
+
+})

jest.config.js

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+};