mapOfItemsToSuppliersByGSCollections

gistfile1.java

    @Test
    public void mapOfItemsToSuppliersByGSCollections()
    {
        final MutableMultimap<String, Supplier> itemsToSuppliers =
            ArrayAdapter.adapt(this.company.getSuppliers())
            .groupByEach(s -> ArrayAdapter.adapt(s.getItemNames()));

        Verify.assertIterableSize(
            "should be 2 suppliers for sofa",
            2,
            itemsToSuppliers.get("sofa"));
    }