What could be causing this TypeError to appear in my Angular unit testing?

this.columnDefs.forEach((columnDef) => {
  columnDef.floatingFilter = this.hasFloatingFilter;
});
this.gridApi.setColumnDefs(this.columnDefs);

ERROR: 'ERROR', TypeError: this.gridApi.setColumnDefs is not a function TypeError: this.gridApi.setColumnDefs is not a function

I have initialized a variable gridApi, which is an instance of GridApi from the 'ag-grid-community' library. Despite setColumnDefs() being a valid function, I encountered the above error during unit testing.

Answer №1

To ensure the ag-grid plugin functions correctly in both unit tests and feature code, it is necessary to import the AgGridModule. Have you included it in the imports array within your TestBed setup?

  TestBed.configureTestingModule({
    imports: [
      AgGridModule  
    ],
    declarations: [
      ComponentToTest,
    ],
    ...

  }).compileComponents();

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