tests: add JsonViewer basic unit tests

src/components/JsonViewer/index.tsx

@@ -0,0 +1 @@
+export * from './JsonViewer';

src/components/__tests__/JsonViewer.tsx

@@ -0,0 +1,44 @@
+import * as React from 'react';
+import { mount, ReactWrapper } from 'enzyme';
+
+import { JsonViewer } from '../';
+import { withTheme } from '../testProviders';
+
+import { ClipboardService } from '../../services/ClipboardService';
+
+const origCopySelected = ClipboardService.copySelected;
+
+describe('Components', () => {
+  describe('JsonViewer', () => {
+    let component: ReactWrapper;
+    const data = { a: 1, b: { c: 'hello' } };
+    beforeEach(() => {
+      component = mount(withTheme(<JsonViewer data={data} />));
+      ClipboardService.copySelected = origCopySelected;
+    });
+
+    test('should render inner HTML', () => {
+      expect(component.html()).toContain('class="redoc-json"');
+    });
+
+    test('should collapse/uncollapse', () => {
+      expect(component.html()).not.toContain('class="hoverable"'); // all are collapesed by default
+      const expandAll = component.find('div > span[children=" Expand all "]');
+      expandAll.simulate('click');
+      expect(component.html()).toContain('class="hoverable"'); // all are collapesed
+
+      const collapseAll = component.find('div > span[children=" Collapse all "]');
+      collapseAll.simulate('click');
+      expect(component.html()).not.toContain('class="hoverable"'); // all are collapesed
+    });
+
+    test('should collapse/uncollapse', () => {
+      ClipboardService.copySelected = jest.fn();
+
+      const copy = component.find('span[onClick]').first();
+      copy.simulate('click');
+
+      expect(ClipboardService.copySelected as jest.Mock).toHaveBeenCalled();
+    });
+  });
+});

src/components/index.ts

@@ -6,6 +6,7 @@ export * from './SearchBox/SearchBox';
 export * from './Operation/Operation';
 export * from './Loading/Loading';
 export * from './RedocStandalone';
+export * from './JsonViewer';
 
 export * from './ErrorBoundary';
 export * from './StoreProvider';

src/components/testProviders.tsx

@@ -0,0 +1,13 @@
+import * as React from 'react';
+import { ThemeProvider } from 'styled-components';
+import defaultTheme from '../theme';
+
+export default class TestThemeProvider extends React.Component {
+  render() {
+    return <ThemeProvider theme={defaultTheme}>{this.props.children}</ThemeProvider>;
+  }
+}
+
+export function withTheme(children) {
+  return <TestThemeProvider>{children}</TestThemeProvider>;
+}