From 49bfecae6b02b66677ff06d3c00f255adc856c17 Mon Sep 17 00:00:00 2001
From: Vincent Voyer <wouaren@gmail.com>
Date: Wed, 16 Nov 2016 10:28:45 +0100
Subject: [PATCH] fix(transformData): always call transformData (#1555)

Event when data does not changes, we now call transformData, so that
if the transformedData changes, there will be a new render.

fixes #1538
---
 .../__tests__/RefinementList-test.js          |  2 +-
 src/components/Template.js                    | 17 ++++++++++++++---
 src/components/__tests__/Template-test.js     | 17 ++++++++---------
 src/decorators/__tests__/headerFooter-test.js |  6 +++---
 .../__tests__/refinement-list-test.js         | 19 -------------------
 .../__tests__/currentToggle-test.js           | 15 ---------------
 6 files changed, 26 insertions(+), 50 deletions(-)

diff --git a/src/components/RefinementList/__tests__/RefinementList-test.js b/src/components/RefinementList/__tests__/RefinementList-test.js
index 5c2dd5d8d0..f69162b3fb 100644
--- a/src/components/RefinementList/__tests__/RefinementList-test.js
+++ b/src/components/RefinementList/__tests__/RefinementList-test.js
@@ -235,7 +235,7 @@ describe('RefinementList', () => {
 
       // When
       const root = shallowRender(props);
-      const actual = root.find('Template').filter({templateKey: 'show-more-inactive'});
+      const actual = root.find('[templateKey="show-more-inactive"]');
 
       // Then
       expect(actual.length).toEqual(1);
diff --git a/src/components/Template.js b/src/components/Template.js
index 002ce0147d..730abfc12c 100644
--- a/src/components/Template.js
+++ b/src/components/Template.js
@@ -8,7 +8,7 @@ import hogan from 'hogan.js';
 
 import isEqual from 'lodash/isEqual';
 
-class Template extends React.Component {
+export class Template extends React.Component {
   shouldComponentUpdate(nextProps) {
     return !isEqual(this.props.data, nextProps.data) || this.props.templateKey !== nextProps.templateKey;
   }
@@ -22,7 +22,7 @@ class Template extends React.Component {
       templateKey: this.props.templateKey,
       compileOptions,
       helpers: this.props.templatesConfig.helpers,
-      data: transformData(this.props.transformData, this.props.templateKey, this.props.data),
+      data: this.props.data,
     });
 
     if (content === null) {
@@ -137,4 +137,15 @@ function transformHelpersToHogan(helpers, compileOptions, data) {
   );
 }
 
-export default Template;
+// Resolve transformData before Template, so transformData is always called
+// even if the data is the same. Allowing you to dynamically inject conditions in
+// transformData that will force re-rendering
+const withTransformData =
+  TemplateToWrap =>
+    props =>
+      <TemplateToWrap
+        {...props}
+        data={transformData(props.transformData, props.templateKey, props.data)} // eslint-disable-line react/prop-types
+      />;
+
+export default withTransformData(Template);
diff --git a/src/components/__tests__/Template-test.js b/src/components/__tests__/Template-test.js
index 0315f41f14..24f563e7ab 100644
--- a/src/components/__tests__/Template-test.js
+++ b/src/components/__tests__/Template-test.js
@@ -4,7 +4,7 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import expect from 'expect';
 import TestUtils from 'react-addons-test-utils';
-import Template from '../Template';
+import TemplateWithTransformData, {Template} from '../Template';
 import sinon from 'sinon';
 import expectJSX from 'expect-jsx';
 expect.extend(expectJSX);
@@ -120,11 +120,10 @@ describe('Template', () => {
         },
       });
 
-      renderer.render(<Template {...props} />);
+      renderer.render(<TemplateWithTransformData {...props} />);
 
       const out = renderer.getRenderOutput();
-      const content = 'it supports transformData';
-      const expectedJSX = <div dangerouslySetInnerHTML={{__html: content}}></div>;
+      const expectedJSX = <Template {...props} data={{feature: 'transformData'}} />;
 
       expect(out).toEqualJSX(expectedJSX);
     });
@@ -144,7 +143,7 @@ describe('Template', () => {
         },
       });
 
-      renderer.render(<Template {...props} />);
+      renderer.render(<TemplateWithTransformData {...props} />);
       expect(called).toBe(true);
     });
 
@@ -165,7 +164,7 @@ describe('Template', () => {
         },
       });
 
-      renderer.render(<Template {...props} />);
+      renderer.render(<TemplateWithTransformData {...props} />);
       expect(called).toBe(true);
     });
 
@@ -177,7 +176,7 @@ describe('Template', () => {
       });
 
       expect(() => {
-        renderer.render(<Template {...props} />);
+        renderer.render(<TemplateWithTransformData {...props} />);
       }).toThrow('`transformData` must return a `object`, got `undefined`.');
     });
 
@@ -191,7 +190,7 @@ describe('Template', () => {
       });
 
       expect(() => {
-        renderer.render(<Template {...props} />);
+        renderer.render(<TemplateWithTransformData {...props} />);
       }).toNotThrow();
     });
 
@@ -203,7 +202,7 @@ describe('Template', () => {
       });
 
       expect(() => {
-        renderer.render(<Template {...props} />);
+        renderer.render(<TemplateWithTransformData {...props} />);
       }).toThrow('`transformData` must return a `object`, got `boolean`.');
     });
   });
diff --git a/src/decorators/__tests__/headerFooter-test.js b/src/decorators/__tests__/headerFooter-test.js
index f2b026904b..33755962da 100644
--- a/src/decorators/__tests__/headerFooter-test.js
+++ b/src/decorators/__tests__/headerFooter-test.js
@@ -64,7 +64,7 @@ describe('headerFooter', () => {
     const out = render(defaultProps);
     // Then
     const templateProps = {
-      data: {},
+      data: undefined,
       templateKey: 'header',
       transformData: null,
       templates: {
@@ -90,7 +90,7 @@ describe('headerFooter', () => {
     const out = render(defaultProps);
     // Then
     const templateProps = {
-      data: {},
+      data: undefined,
       templateKey: 'footer',
       transformData: null,
       templates: {
@@ -118,7 +118,7 @@ describe('headerFooter', () => {
         footer: 'yo footer',
       };
       templateProps = {
-        data: {},
+        data: undefined,
         transformData: null,
         templates: {
           header: 'yo header',
diff --git a/src/widgets/refinement-list/__tests__/refinement-list-test.js b/src/widgets/refinement-list/__tests__/refinement-list-test.js
index ad7465d2d5..ae72a7e3b0 100644
--- a/src/widgets/refinement-list/__tests__/refinement-list-test.js
+++ b/src/widgets/refinement-list/__tests__/refinement-list-test.js
@@ -1,18 +1,12 @@
 /* eslint-env mocha */
 
-import React from 'react';
 import expect from 'expect';
 import sinon from 'sinon';
 
-import {createRenderer} from 'react-addons-test-utils';
-
 import expectJSX from 'expect-jsx';
 expect.extend(expectJSX);
 
 import refinementList from '../refinement-list.js';
-import Template from '../../../components/Template.js';
-import createHelpers from '../../../lib/createHelpers.js';
-import defaultTemplates from '../defaultTemplates.js';
 
 describe('refinementList()', () => {
   let autoHideContainer;
@@ -21,8 +15,6 @@ describe('refinementList()', () => {
   let options;
   let widget;
   let ReactDOM;
-  const renderer = createRenderer();
-  const helpers = createHelpers('en-US');
 
   beforeEach(() => {
     container = document.createElement('div');
@@ -187,17 +179,6 @@ describe('refinementList()', () => {
       createURL = () => '#';
     });
 
-    it('formats counts', () => {
-      const props = {
-        templatesConfig: {helpers},
-        templates: defaultTemplates,
-      };
-      renderer.render(<Template data={{count: 1000}} {...props} templateKey="item" />);
-      const out = renderer.getRenderOutput();
-      // eslint-disable-next-line max-len
-      expect(out).toEqualJSX(<div dangerouslySetInnerHTML={{__html: '<label class="">\n <input type="checkbox" class="" value="" />\n <span class="">1,000</span>\n</label>'}} />);
-    });
-
     context('cssClasses', () => {
       it('should call the component with the correct classes', () => {
         // Given
diff --git a/src/widgets/toggle/implementations/__tests__/currentToggle-test.js b/src/widgets/toggle/implementations/__tests__/currentToggle-test.js
index ed5a7e3d39..1cf96d8f7a 100644
--- a/src/widgets/toggle/implementations/__tests__/currentToggle-test.js
+++ b/src/widgets/toggle/implementations/__tests__/currentToggle-test.js
@@ -4,20 +4,13 @@ import React from 'react';
 import expect from 'expect';
 import sinon from 'sinon';
 
-import {createRenderer} from 'react-addons-test-utils';
-
 import currentToggle from '../currentToggle.js';
 import defaultTemplates from '../../defaultTemplates.js';
-import Template from '../../../../components/Template';
 
 import expectJSX from 'expect-jsx';
 expect.extend(expectJSX);
-import createHelpers from '../../../../lib/createHelpers.js';
 
 describe('currentToggle()', () => {
-  const helpers = createHelpers('en-US');
-  const renderer = createRenderer();
-
   context('good usage', () => {
     let ReactDOM;
     let containerNode;
@@ -102,14 +95,6 @@ describe('currentToggle()', () => {
         expect(ReactDOM.render.secondCall.args[1]).toEqual(containerNode);
       });
 
-      it('formats counts', () => {
-        templateProps.templatesConfig = {helpers};
-        renderer.render(<Template data={{count: 1000}} {...templateProps} templateKey="item" />);
-        const out = renderer.getRenderOutput();
-        // eslint-disable-next-line max-len
-        expect(out).toEqualJSX(<div dangerouslySetInnerHTML={{__html: '<label class="">\n <input type="checkbox" class="" value="" />\n <span class="">1,000</span>\n</label>'}} />);
-      });
-
       it('understands cssClasses', () => {
         results = {
           hits: [{Hello: ', world!'}],