Check if demo and MUI mappers uses the same versions

- otherwise it will cause styling troubles

Author: rvsia

packages/mui-component-mapper/src/tests/dependencies.test.js

@@ -0,0 +1,10 @@
+import MUIJson from '../../package.json';
+import DEMOJson from '../../../react-renderer-demo/package.json';
+
+describe('package.json', () => {
+  it('mui-mapper has the same version as react-renderer-demo', () => {
+    expect(MUIJson.devDependencies['@material-ui/core']).toEqual(DEMOJson.dependencies['@material-ui/core']);
+    expect(MUIJson.devDependencies['@material-ui/icons']).toEqual(DEMOJson.dependencies['@material-ui/icons']);
+    expect(MUIJson.devDependencies['@material-ui/styles']).toEqual(DEMOJson.dependencies['@material-ui/styles']);
+  });
+});