use jest for CI

test/rule/onError.spec.js

@@ -0,0 +1,60 @@
+const { basicProxyRequest, proxyServerWithRule, } = require('../util.js');
+
+const jestMockErrorFn = jest.fn();
+const jestMockConnectErrorFn = jest.fn();
+
+const ERROR_PAGE_IN_RULE = 'this is my error page';
+const rule = {
+  onConnectError: jestMockConnectErrorFn,
+  *onError(requestDetail, error) {
+    jestMockErrorFn(requestDetail, error);
+    return {
+      response: {
+        statusCode: '200',
+        header: {},
+        body: ERROR_PAGE_IN_RULE,
+      }
+    };
+  },
+  *beforeDealHttpsRequest(requestDetail) {
+    return requestDetail.host.indexOf('intercept') === 0;
+  },
+};
+
+describe('Rule replaceResponseData', () => {
+  let proxyServer;
+  let proxyPort;
+  let proxyHost;
+  
+  beforeAll(async () => {
+    proxyServer = await proxyServerWithRule(rule);
+    proxyPort = proxyServer.proxyPort;
+    proxyHost = `http://localhost:${proxyPort}`;
+  });
+
+  afterAll(() => {
+    return proxyServer && proxyServer.close();
+  });
+
+  it('should get error', async () => {
+    const url = 'https://intercept.anyproxy_not_exists.io/some_path';
+    const result = await basicProxyRequest(proxyHost, 'GET', url);
+    const proxyRes = result.response;
+    const body = result.body;
+    expect(proxyRes.statusCode).toBe(200);
+    expect(body).toBe(ERROR_PAGE_IN_RULE);
+    expect(jestMockErrorFn.mock.calls.length).toBe(1);
+  });
+
+  it('should get connec error', async () => {
+    const url = 'https://anyproxy_not_exists.io/do_not_intercept';
+    let e;
+    try {
+      await basicProxyRequest(proxyHost, 'GET', url);
+    } catch (err) {
+      e = err;
+    }
+    expect(e).not.toBeUndefined();
+    expect(jestMockConnectErrorFn.mock.calls.length).toBe(1);
+  });
+});