feat: add Multivariate Test

Squashed commit of the following:

commit 210940d035f16a9d1dd136cb7744b9ef884897d8
Author: Hudo Assenco <[email protected]>
Date:   Tue Oct 13 15:56:01 2020 -0300

    docs: add @kelvinmaues as a contributor

commit 457c4fac8a99d469830abba0257c4427e6d854a3
Author: Hudo Assenco <[email protected]>
Date:   Tue Oct 13 15:53:19 2020 -0300

    build: remove unnecessary files

commit 0a0d5a1
Author: Kelvin Maues <[email protected]>
Date:   Mon Oct 12 12:18:15 2020 -0300

    Add lib to git ignore

commit 2f92156
Author: Kelvin Maues <[email protected]>
Date:   Mon Oct 12 12:08:35 2020 -0300

    Replace correct  markdown to image

commit 430fa3a
Author: Kelvin Maues <[email protected]>
Date:   Mon Oct 12 12:05:49 2020 -0300

    Add a new test to multivariate

commit 1587714
Author: Kelvin Maues <[email protected]>
Date:   Mon Oct 12 11:55:36 2020 -0300

    Add the documentation about the multivariante test and how to use it

commit 5bd2eb8
Author: Kelvin Maues <[email protected]>
Date:   Mon Oct 12 11:34:46 2020 -0300

    Add the feature to allow multivariate testing with variants

commit decae29
Author: Kelvin Maues <[email protected]>
Date:   Wed Sep 16 11:26:09 2020 -0300

    Removing prop types out of the component

commit 602d59d
Author: Kelvin Maues <[email protected]>
Date:   Wed Sep 16 10:46:12 2020 -0300

    New build improving the conditional

commit 64ade37
Author: Kelvin Maues <[email protected]>
Date:   Wed Sep 16 10:45:17 2020 -0300

    Conditional improved

commit 21aed44
Merge: 8b64802 114dbe2
Author: Kelvin Maues <[email protected]>
Date:   Wed Sep 16 10:37:42 2020 -0300

    Merge pull request #1 from kelvinmaues/feature/mvt-experiments

    Improved Experiment component with a new feature to mtv experiments, …

commit 114dbe2
Author: Kelvin Maues <[email protected]>
Date:   Wed Sep 16 10:26:15 2020 -0300

    Improved Experiment component with a new feature to mtv experiments,
    new types added and script changed

Author: hudovisk

.all-contributorsrc

@@ -38,6 +38,16 @@
       "contributions": [
         "review"
       ]
+    },
+    {
+      "login": "kelvinmaues",
+      "name": "Kelvin Maues",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/11196828?v=4",
+      "profile": "https://kelvinmaues.github.io/",
+      "contributions": [
+        "code",
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -1,9 +1,7 @@
 # react-optimize
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-
-[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
-
+[![All Contributors](https://img.shields.io/badge/all_contributors-4-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 [![Build Status](https://github.com/hudovisk/react-optimize/workflows/Build/badge.svg)](https://github.com/hudovisk/react-optimize/actions) [![Greenkeeper badge](https://badges.greenkeeper.io/hudovisk/react-optimize.svg)](https://greenkeeper.io/)
@@ -21,8 +19,6 @@ Docs:
 yarn add react-optimize
 ```
 
-## How to use
-
 You first need to add the gtag snippet with the optimize container id in it. If you are using [create-react-app](https://github.com/facebook/create-react-app)
 you can add the following to `public/index.html`
 
@@ -44,7 +40,10 @@ REACT_APP_GA_ID=UA-xyz
 REACT_APP_OPTIMIZE_ID=GTM-abc
 ```
 
-After that you can use the lib like the following:
+## How to use
+
+#### A/B Test
+If the experience is a **A/B testing** you can use the lib like the following:
 
 ```
 import React from 'react';
@@ -69,6 +68,64 @@ class App extends React.Component {
 }
 ```
 
+#### Multivariate Test
+If the experience is a **multivariate testing** to test variants with two or more different sections. You can use the lib like the following applying the props **asMtvExperiment (confirm that is multivariate)** and the **indexSectionPosition** on google optimize like the image below:
+
+![google optimize multivariate test](./google-optimize-test.png)
+
+```
+import React from 'react';
+import { Experiment, Variant } from "react-optimize";
+
+class App extends React.Component {
+  render() {
+    return(
+      <Experiment 
+        id="<experiment-id>"
+        asMtvExperiment
+        indexSectionPosition="0"
+      >
+        <Variant id="0">
+          Original
+        </Variant>
+        <Variant id="1">
+          Variant 1
+        </Variant>
+      </Experiment>
+
+      <Experiment 
+        id="<experiment-id>"
+        asMtvExperiment
+        indexSectionPosition="1"
+      >
+        <Variant id="0">
+          Original
+        </Variant>
+        <Variant id="1">
+          Variant 1
+        </Variant>
+        <Variant id="2">
+          Variant 2
+        </Variant>
+      </Experiment>
+
+      <Experiment 
+        id="<experiment-id>"
+        asMtvExperiment
+        indexSectionPosition="2"
+      >
+        <Variant id="0">
+          Original
+        </Variant>
+        <Variant id="1">
+          Variant 1
+        </Variant>
+      </Experiment>
+    )
+  }
+}
+```
+
 ## Contributors ✨
 
 Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
@@ -78,15 +135,15 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 <!-- markdownlint-disable -->
 <table>
   <tr>
-    <td align="center"><a href="https://github.com/hudovisk"><img src="https://avatars2.githubusercontent.com/u/5161722?v=4" width="100px;" alt=""/><br /><sub><b>Hudo Assenco</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/commits?author=hudovisk" title="Code">💻</a> <a href="https://github.com/hudovisk/react-optimize/commits?author=hudovisk" title="Documentation">📖</a></td>
-    <td align="center"><a href="http://dobesv.com"><img src="https://avatars2.githubusercontent.com/u/327833?v=4" width="100px;" alt=""/><br /><sub><b>Dobes Vandermeer</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/commits?author=dobesv" title="Code">💻</a> <a href="https://github.com/hudovisk/react-optimize/commits?author=dobesv" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/tlaak"><img src="https://avatars0.githubusercontent.com/u/1674055?v=4" width="100px;" alt=""/><br /><sub><b>Timo Laak</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/pulls?q=is%3Apr+reviewed-by%3Atlaak" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://github.com/hudovisk"><img src="https://avatars2.githubusercontent.com/u/5161722?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hudo Assenco</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/commits?author=hudovisk" title="Code">💻</a> <a href="https://github.com/hudovisk/react-optimize/commits?author=hudovisk" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://dobesv.com"><img src="https://avatars2.githubusercontent.com/u/327833?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dobes Vandermeer</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/commits?author=dobesv" title="Code">💻</a> <a href="https://github.com/hudovisk/react-optimize/commits?author=dobesv" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/tlaak"><img src="https://avatars0.githubusercontent.com/u/1674055?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Timo Laak</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/pulls?q=is%3Apr+reviewed-by%3Atlaak" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://kelvinmaues.github.io/"><img src="https://avatars0.githubusercontent.com/u/11196828?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kelvin Maues</b></sub></a><br /><a href="https://github.com/hudovisk/react-optimize/commits?author=kelvinmaues" title="Code">💻</a> <a href="https://github.com/hudovisk/react-optimize/commits?author=kelvinmaues" title="Documentation">📖</a></td>
   </tr>
 </table>
 
-<!-- markdownlint-enable -->
+<!-- markdownlint-restore -->
 <!-- prettier-ignore-end -->
-
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!

google-optimize-test.png

@@ -13,7 +13,7 @@
     "test:node": "mocha --require @babel/register test/test.node.js",
     "test:browser": "cross-env NODE_ENV=test karma start",
     "test": "yarn run test:node && yarn run test:browser && yarn run lint",
-    "build": "webpack",
+    "build": "rm -Rf lib && webpack",
     "watch": "webpack --watch",
     "prepublishOnly": "yarn run build"
   },

package.json

@@ -3,18 +3,6 @@ import PropTypes from "prop-types";
 import OptimizeContext from "./OptimizeContext";
 
 class Experiment extends React.Component {
-  static defaultProps = {
-    loader: null,
-    timeout: 3000,
-  };
-
-  static propTypes = {
-    id: PropTypes.string.isRequired,
-    loader: PropTypes.node,
-    timeout: PropTypes.number,
-    children: PropTypes.node,
-  };
-
   state = {
     variant: null,
   };
@@ -32,12 +20,25 @@ class Experiment extends React.Component {
     }
   };
 
+  applyMtvExperiment = (value) => {
+    const sections = value.split("-");
+    const variant = sections[this.props.indexSectionPosition];
+    this.updateVariant(variant);
+  };
+
   updateVariantFromGlobalState = () => {
-    const value =
+    const googleOptimizeExperimentValue =
       typeof window !== "undefined" && window.google_optimize
         ? window.google_optimize.get(this.props.id)
         : null;
-    this.updateVariant(value);
+    const isAMtvExperiment =
+      this.props.asMtvExperiment && googleOptimizeExperimentValue;
+
+    if (isAMtvExperiment) {
+      this.applyMtvExperiment(googleOptimizeExperimentValue);
+    } else {
+      this.updateVariant(googleOptimizeExperimentValue);
+    }
   };
 
   setupOptimizeCallback = () => {
@@ -99,4 +100,19 @@ class Experiment extends React.Component {
   }
 }
 
+Experiment.propTypes = {
+  id: PropTypes.string.isRequired,
+  loader: PropTypes.node,
+  timeout: PropTypes.number,
+  children: PropTypes.node,
+  asMtvExperiment: PropTypes.bool,
+  indexSectionPosition: PropTypes.string,
+};
+
+Experiment.defaultProps = {
+  loader: null,
+  timeout: 3000,
+  asMtvExperiment: false,
+};
+
 export default Experiment;

src/Experiment.js

@@ -3,11 +3,6 @@ import PropTypes from "prop-types";
 import OptimizeContext from "./OptimizeContext";
 
 class Variant extends React.Component {
-  static propTypes = {
-    id: PropTypes.string.isRequired,
-    children: PropTypes.node,
-  };
-
   render() {
     return (
       <OptimizeContext.Consumer>
@@ -17,4 +12,9 @@ class Variant extends React.Component {
   }
 }
 
+Variant.propTypes = {
+  id: PropTypes.string.isRequired,
+  children: PropTypes.node,
+};
+
 export default Variant;

src/Variant.js

@@ -1,10 +1,12 @@
-declare module 'react-optimize' {
-  import { ComponentType, ReactNode } from 'react';
+declare module "react-optimize" {
+  import { ComponentType, ReactNode } from "react";
   interface ExperimentProps {
     children: ReactNode;
     id: string;
     loader?: ReactNode;
     timeout?: number;
+    asMtvExperiment?: boolean;
+    indexSectionPosition?: string | number;
   }
 
   const Experiment: ComponentType<ExperimentProps>;

src/index.d.ts

@@ -27,6 +27,19 @@ describe("experiment", () => {
 
       delete window.google_optimize;
     });
+
+    it("should get multivariante test variants", () => {
+      window.google_optimize = { get: sinon.stub().returns("1-2-1") };
+
+      const wrapper = shallow(
+        <Experiment asMtvExperiment indexSectionPosition="0" id="abc" />
+      );
+
+      expect(window.google_optimize.get.calledWith("abc")).to.be.true;
+      expect(wrapper.state("variant")).to.be.equal("1");
+
+      delete window.google_optimize;
+    });
   });
 
   describe("on optimize not loaded yet", () => {