TypeError: Cannot read properties of undefined (reading 'split')"

Question

how to perform "split" test with Angular ?

I'm trying to run a test on a method that has a "split" but I end up getting this error

follow below method , and test class spec.ts

  getCellData(row: any, column: any): any {
    const nestedProperties: string[] = column.property.split('.');
    let value: any = row;
    for (const prop of nestedProperties) {
      value = value[prop];
    }
    return value;
  }

 fdescribe('getCellData:', () => {
      const column: any = [{
        property: 'address.street',
        label: 'Rua',
        type: 'boolean',
      }];

      const columnItem: any =[{
        name: 'teste',
        address:{
          street: 'Rua dos Alfeneiros, nº 4'
        }
      }]
     
      let value: any = columnItem;
    
      it('teste A', () => {
        const nestedProperties: string[] = column.property.split('.');
        expect(component.getCellData(column, value)).toEqual(nestedProperties);

      });
    });