!1 Merge back to master

Merge pull request !1 from dev branch

client/tests/enzyme_setup.js

@@ -0,0 +1,4 @@
+import { configure } from "enzyme";
+import Adapter from "enzyme-adapter-react-15";
+
+configure({ adapter: new Adapter() });

client/tests/test_helper.js

@@ -0,0 +1,73 @@
+// function should be called after async operation is finished
+export function execFuncs(instance, execs) {
+  // instance: enzyme mounted component
+  // const execs = [
+  //   {
+  //     func: "componentWillMount",
+  //     args: []
+  //   }
+  // ];
+  return execs.reduce((prePromise, nextFunc) => {
+    return prePromise.then(() => instance[nextFunc.func](...nextFunc.args));
+  }, Promise.resolve());
+}
+
+export function execsToStr(execs) {
+  // const execs = [
+  //   {
+  //     func: "componentWillMount",
+  //     args: []
+  //   }
+  // ];
+  const execList = execs.map(
+    funcInfo => `${funcInfo.func}(${funcInfo.args.join(", ")})`
+  );
+
+  return execList.join(", ");
+}
+
+export function getDesc(componentName, testCase) {
+  // const testCase = {
+  //   execs: [
+  //     {
+  //       func: "onAddLocalFiles",
+  //       args: []
+  //     }
+  //   ],
+  //   state: {
+  //     filterFileName: ""
+  //   },
+  //   calls: [
+  //     {
+  //       func: "onAddLocalFiles",
+  //       count: 1
+  //     }
+  //   ]
+  // }
+  return `${componentName} should satisfy following by exec ${execsToStr(
+    testCase.execs
+  )}
+        state=${JSON.stringify(testCase.state)}
+        calls=${JSON.stringify(testCase.calls)} `;
+}
+
+export function verifyCalls(calls, stubs) {
+  // const calls: [
+  //   {
+  //     func: "funcName",
+  //     count: 1
+  //   }
+  // ];
+  // const stubs = {
+  //   funcName: jest.fn(),
+  // };
+  let err = null;
+  calls.forEach(called => {
+    if (stubs[called.func].mock.calls.length != called.count) {
+      err = `InfoBar: ${called.func} should be called ${called.count} but ${
+        stubs[called.func].mock.calls.length
+      }`;
+    }
+  });
+  return err;
+}