Function compareFun

src/cdk/collections/selection.spec.ts:340–340

(x: Item, y: Item)

    const v1: Item = {key: 1, value: 'blue'};
    const v2: Item = {key: 1, value: 'green'};
    const compareFun = (x: Item, y: Item) => x.key === y.key;
    const model = new SelectionModel<Item>(false, [v1], false, compareFun);
    model.deselect(v2);
    expect(model.selected.length).toBe(0);