get data-*, aria-*, and role attributes

components/_util/__tests__/util.test.js

@@ -1,5 +1,5 @@
 import throttleByAnimationFrame from '../throttleByAnimationFrame';
-import getDataAttributes from '../getDataAttributes';
+import getDataOrAriaProps from '../getDataOrAriaProps';
 
 describe('Test utils function', () => {
   beforeAll(() => {
@@ -34,19 +34,54 @@ describe('Test utils function', () => {
     expect(callback).not.toBeCalled();
   });
 
-  describe('getDataAttributes', () => {
+  describe('getDataOrAriaProps', () => {
     it('returns all data-* properties from an object', () => {
       const props = {
         onClick: () => {},
         isOpen: true,
         'data-test': 'test-id',
         'data-id': 1234,
       };
-      const results = getDataAttributes(props);
+      const results = getDataOrAriaProps(props);
       expect(results).toEqual({
         'data-test': 'test-id',
         'data-id': 1234,
       });
     });
+
+    it('does not return data-__ properties from an object', () => {
+      const props = {
+        onClick: () => {},
+        isOpen: true,
+        'data-__test': 'test-id',
+        'data-__id': 1234,
+      };
+      const results = getDataOrAriaProps(props);
+      expect(results).toEqual({});
+    });
+
+    it('returns all aria-* properties from an object', () => {
+      const props = {
+        onClick: () => {},
+        isOpen: true,
+        'aria-labelledby': 'label-id',
+        'aria-label': 'some-label',
+      };
+      const results = getDataOrAriaProps(props);
+      expect(results).toEqual({
+        'aria-labelledby': 'label-id',
+        'aria-label': 'some-label',
+      });
+    });
+
+    it('returns role property from an object', () => {
+      const props = {
+        onClick: () => {},
+        isOpen: true,
+        role: 'search',
+      };
+      const results = getDataOrAriaProps(props);
+      expect(results).toEqual({ role: 'search' });
+    });
   });
 });

components/_util/getDataOrAriaProps.ts

@@ -0,0 +1,11 @@
+export default function getDataOrAriaProps(props: any) {
+  return Object.keys(props).reduce((prev: any, key: string) => {
+    if (
+      (key.substr(0, 5) === 'data-' || key.substr(0, 5) === 'aria-' || key === 'role') &&
+      key.substr(0, 7) !== 'data-__'
+    ) {
+      prev[key] = props[key];
+    }
+    return prev;
+  }, {});
+}