introduce jest and travis-ci (#541)

introduce jest and travis-ci

test/lib/httpsServerMgr.spec.js

@@ -0,0 +1,17 @@
+const httpsServerMgr = require('../../lib/httpsServerMgr');
+
+describe('httpsServerMgr', () => {
+  it('get https server', async () => {
+    const serverMgr = new httpsServerMgr({
+      hostname: '127.0.0.1',
+      handler: () => {
+        console.log('this is handler');
+      },
+      wsHandler: () => {
+        console.log('this is handler');
+      },
+    });
+    await serverMgr.getSharedHttpsServer();
+    serverMgr.close();
+  });
+});

test/lib/ruleLoader.spec.js

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+const ruleLoader = require('../../lib/ruleLoader');
+const fs = require('fs');
+const path = require('path');
+
+const localModulePath = path.join(__dirname, '../fixtures/someRule.js');
+describe('ruleLoader', () => {
+  it('should successfully cache a remote file', async () => {
+    await ruleLoader.cacheRemoteFile('https://cdn.bootcss.com/lodash.js/4.16.4/lodash.min.js')
+      .then(filePath => {
+        let content;
+        if (filePath) {
+          content = fs.readFileSync(filePath, { encoding: 'utf8' });
+        }
+        expect(content && content.length > 100).toBe(true);
+      });
+  });
+
+  it('should load a local module ../util/CommonUtil', async () => {
+    await ruleLoader.loadLocalPath(localModulePath)
+      .then(module => {
+        expect(module.foo).not.toBeUndefined();
+      });
+  });
+
+  it('should smart load a remote module', done => {
+    ruleLoader.requireModule('https://cdn.bootcss.com/lodash.js/4.16.4/lodash.min.js')
+      .then(module => {
+        expect(module.VERSION).toEqual('4.16.4');
+        done();
+      })
+      .catch(done.fail);
+  });
+
+  it('should smart load a local module', done => {
+    ruleLoader.requireModule(localModulePath)
+      .then(module => {
+        expect(module.foo).not.toBeUndefined();
+        done();
+      })
+      .catch(done.fail);
+  });
+});

test/lib/util.spec.js

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+const util = require('../../lib/util');
+
+describe('utils', () => {
+  it('getFreePort', async () => {
+    const count = 100;
+    const tasks = [];
+    for (let i = 1; i <= count; i++) {
+      tasks.push(util.getFreePort());
+    }
+    await Promise.all(tasks)
+      .then((results) => {
+        // ensure ports are unique
+        const portMap = {};
+        results.map((portNumber) => {
+          portMap[portNumber] = true;
+        });
+        expect(Object.keys(portMap).length).toEqual(count);
+      });
+  });
+});