@IsTest
public class IconUtilTest {

  @IsTest
  static void getGetLightningIcon() {
    Test.startTest();
    for (Schema.SObjectType sObjectType : SObjectUtil.globalDescribe.values()) {
      String result = IconUtil.getLightningIcon(sObjectType.newSObject());
      System.assert(String.isNotBlank(result));
    }
    Test.stopTest();
  }

}