tests: add test coverage

lib/DonorFilter/PluggableDonorFilter.test.js

@@ -10,7 +10,7 @@ jest.mock('../Donors', () => ({
   ...jest.requireActual('../Donors'),
   useFetchDonors: jest.fn(() => ({
     isLoading: false,
-    donors: [],
+    donors: [{ id: '1', name: 'Amazon' }],
   })),
   DonorsLookup: jest.fn(({ children, ...rest }) => {
     return (
@@ -43,7 +43,7 @@ const renderFilter = (props) => (render(
     id="donor"
     activeFilters={[]}
     labelId={labelId}
-    name="donor"
+    name={mockVendorData.name}
     onChange={() => {}}
     {...props}
   />,
@@ -67,6 +67,26 @@ describe('PluggableDonorFilter', () => {
 
     expect(addDonorsButton).toBeDefined();
     user.click(addDonorsButton);
-    expect(mockOnAddDonors).toHaveBeenCalledWith({ name: 'donor', values: [mockVendorData.id] });
+    expect(mockOnAddDonors).toHaveBeenCalledWith({
+      name: mockVendorData.name,
+      values: [mockVendorData.id],
+    });
+  });
+
+  it('should clear all donors', () => {
+    const mockOnAddDonors = jest.fn();
+    const { getAllByRole } = renderFilter({
+      onChange: mockOnAddDonors,
+      activeFilters: [mockVendorData.id],
+    });
+
+    const clearAllButton = getAllByRole('button')[1];
+
+    expect(clearAllButton).toBeDefined();
+    user.click(clearAllButton);
+    expect(mockOnAddDonors).toHaveBeenCalledWith({
+      name: mockVendorData.name,
+      values: [],
+    });
   });
 });