test: add Ut

Author: charlypa

package.json

@@ -26,7 +26,7 @@
     "lint:fix": "eslint --quiet --fix src test",
     "prepare": "husky install",
     "test": "npm run test:unit && npm run test:integ",
-    "test:unit": "mocha test/unit/*.spec.js test/unit/**/*.spec.js --timeout=3000",
+    "test:unit": "APP_CONFIG=./test/unit/utils/.app.json mocha test/unit/*.spec.js test/unit/**/*.spec.js  test/unit/**/*.spec.js  test/unit/**/**/*.spec.js --timeout=3000",
     "test:integ": "mocha test/integration/*.spec.js test/integration/**/*.spec.js --timeout=3000",
     "printReportsLink": "echo Detailed unit test coverage report: file:///$(pwd)/coverage-unit/index.html && echo Detailed integration test coverage report: file:///$(pwd)/coverage-integration/index.html",
     "cover": "npm run cover:unit",

test/unit/utils/.app.json

@@ -0,0 +1,12 @@
+{
+  "port": "5000",
+  "authKey": "YWxhZGRpbjpvcGVuc2VzYW1l",
+  "allowPublicAccess": false,
+  "mysql": {
+    "host": "localhost",
+    "port": "3306",
+    "database": "testdb",
+    "user": "root",
+    "password": "1234"
+  }
+}

test/unit/utils/configs-test.spec.js

@@ -0,0 +1,52 @@
+/*global describe, it*/
+import * as assert from 'assert';
+import * as chai from 'chai';
+import {deleteAppConfig, getConfigs} from "../../../src/utils/configs.js";
+
+let expect = chai.expect;
+
+describe('unit Tests', function () {
+
+    it('verify config fail if APP_CONFIG not set properly', function () {
+        const backEnv = process.env.APP_CONFIG;
+        delete process.env.APP_CONFIG;
+        deleteAppConfig();
+        let exceptionOccurred = false;
+        try {
+            getConfigs();
+        } catch (e) {
+            expect(e.toString()).eql('Error: Please provide valid app config file by setting APP_CONFIG' +
+                ' environment variable for example APP_CONFIG=./abc.json');
+            exceptionOccurred = true;
+        }
+        expect(exceptionOccurred).eql(true);
+        process.env.APP_CONFIG = backEnv;
+
+    });
+    it('getConfigShould pass', function () {
+        let configs = getConfigs();
+        _verifyConfigs(configs);
+        configs = getConfigs();
+        // call verify config second time
+        _verifyConfigs(configs);
+
+    });
+    it('default port should be 5000', function () {
+        let configs = getConfigs();
+        _verifyConfigs(configs);
+        configs = getConfigs();
+        // call verify config second time
+        _verifyConfigs(configs);
+    });
+});
+
+function _verifyConfigs(configs) {
+    expect(configs.port).to.eql('5000');
+    expect(configs.authKey.length).to.eql(24);
+    expect(configs.mysql.port).to.eql('3306');
+    expect(configs.mysql.user.length).to.gt(0);
+    expect(configs.mysql.password.length).to.gt(0);
+    expect(configs.mysql.host.length).to.gt(0);
+    expect(configs.mysql.database.length).to.gt(0);
+
+}