test(css-dimensions-util): add test boilerplate

src/utils/__tests__/cssDimensions.test.js

@@ -13,3 +13,9 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
+
+import { test } from 'vitest';
+
+test.for([
+])('ensureUnit returns %expected with input $dimension', () => {
+});