Improved branching coverage in some parts

test/domains/DomainSelector.test.tsx

@@ -10,28 +10,40 @@ describe('<DomainSelector />', () => {
   let wrapper: ShallowWrapper;
   const domainsList = Mock.of<DomainsList>({
     domains: [
+      Mock.of<ShlinkDomain>({ domain: 'default.com', isDefault: true }),
       Mock.of<ShlinkDomain>({ domain: 'foo.com' }),
       Mock.of<ShlinkDomain>({ domain: 'bar.com' }),
     ],
   });
+  const createWrapper = (value = '') => {
+    wrapper = shallow(
+      <DomainSelector value={value} domainsList={domainsList} listDomains={jest.fn()} onChange={jest.fn()} />,
+    );
 
-  beforeEach(() => {
-    wrapper = shallow(<DomainSelector domainsList={domainsList} listDomains={jest.fn()} onChange={jest.fn()} />);
-  });
+    return wrapper;
+  };
 
   afterEach(jest.clearAllMocks);
   afterEach(() => wrapper.unmount());
 
-  it('shows dropdown by default', () => {
+  it.each([
+    [ '', 'Domain', 'domains-dropdown__toggle-btn' ],
+    [ 'my-domain.com', 'Domain: my-domain.com', 'domains-dropdown__toggle-btn--active' ],
+  ])('shows dropdown by default', (value, expectedText, expectedClassName) => {
+    const wrapper = createWrapper(value);
     const input = wrapper.find(InputGroup);
     const dropdown = wrapper.find(DropdownBtn);
 
     expect(input).toHaveLength(0);
     expect(dropdown).toHaveLength(1);
-    expect(dropdown.find(DropdownItem)).toHaveLength(4);
+    expect(dropdown.find(DropdownItem)).toHaveLength(5);
+    expect(dropdown.prop('text')).toEqual(expectedText);
+    expect(dropdown.prop('className')).toEqual(expectedClassName);
   });
 
-  it('allows to toggle between dropdown and input', () => {
+  it('allows toggling between dropdown and input', () => {
+    const wrapper = createWrapper();
+
     wrapper.find(DropdownItem).last().simulate('click');
     expect(wrapper.find(InputGroup)).toHaveLength(1);
     expect(wrapper.find(DropdownBtn)).toHaveLength(0);
@@ -40,4 +52,14 @@ describe('<DomainSelector />', () => {
     expect(wrapper.find(InputGroup)).toHaveLength(0);
     expect(wrapper.find(DropdownBtn)).toHaveLength(1);
   });
+
+  it.each([
+    [ 0, 'default.com<span class="float-right text-muted">default</span>' ],
+    [ 1, 'foo.com' ],
+    [ 2, 'bar.com' ],
+  ])('shows expected content on every item', (index, expectedContent) => {
+    const item = createWrapper().find(DropdownItem).at(index);
+
+    expect(item.html()).toContain(expectedContent);
+  });
 });

test/visits/reducers/visitsOverview.test.ts

@@ -43,9 +43,13 @@ describe('visitsOverviewReducer', () => {
       expect(visitsCount).toEqual(100);
     });
 
-    it('returns updated amounts on CREATE_VISITS', () => {
+    it.each([
+      [ 50, 53 ],
+      [ 0, 3 ],
+      [ undefined, 3 ],
+    ])('returns updated amounts on CREATE_VISITS', (providedOrphanVisitsCount, expectedOrphanVisitsCount) => {
       const { visitsCount, orphanVisitsCount } = reducer(
-        state({ visitsCount: 100, orphanVisitsCount: 50 }),
+        state({ visitsCount: 100, orphanVisitsCount: providedOrphanVisitsCount }),
         {
           type: CREATE_VISITS,
           createdVisits: [
@@ -65,7 +69,7 @@ describe('visitsOverviewReducer', () => {
       );
 
       expect(visitsCount).toEqual(102);
-      expect(orphanVisitsCount).toEqual(53);
+      expect(orphanVisitsCount).toEqual(expectedOrphanVisitsCount);
     });
   });