How do you test a statement with no return React Jest Enzyme

Question

I am learning jest, enzyme and i just cant figure out something so simple. My problem is that this condition is inside of another function. I need to check if the state obj is not null then assign some variables and test it. When I check code coverage it shows that the if statement is not covered. thanks

async handleButton() {

if (this.state.obj !== null) {
   var employee = this.state.obj.employee.name;
   var employeeId = this.state.obj.employee.id;
 }
await this.setState({
   updateObj: {...someOldObj, employee, employeeId};
 });
}