Increase coverage in TagSelector

config/test/setupTests.ts

@@ -25,3 +25,4 @@ afterEach(() => {
 (global as any).scrollTo = () => {};
 (global as any).prompt = () => {};
 (global as any).matchMedia = (media: string) => ({ matches: false, media });
+(global as any).HTMLElement.prototype.scrollIntoView = () => {};

shlink-web-component/src/short-urls/ShortUrlForm.tsx

@@ -11,7 +11,6 @@ import { Button, FormGroup, Input, Row } from 'reactstrap';
 import type { InputType } from 'reactstrap/types/lib/Input';
 import type { ShlinkCreateShortUrlData, ShlinkDeviceLongUrls, ShlinkEditShortUrlData } from '../api-contract';
 import type { DomainSelectorProps } from '../domains/DomainSelector';
-import { normalizeTag } from '../tags/helpers';
 import type { TagsSelectorProps } from '../tags/helpers/TagsSelector';
 import { IconInput } from '../utils/components/IconInput';
 import type { DateTimeInputProps } from '../utils/dates/DateTimeInput';
@@ -54,7 +53,7 @@ export const ShortUrlForm = (
   const isEdit = mode === 'edit';
   const isCreation = isCreationData(shortUrlData);
   const isBasicMode = mode === 'create-basic';
-  const changeTags = (tags: string[]) => setShortUrlData({ ...shortUrlData, tags: tags.map(normalizeTag) });
+  const changeTags = (tags: string[]) => setShortUrlData({ ...shortUrlData, tags });
   const setResettableValue = (value: string, initialValue?: any) => {
     if (hasValue(value)) {
       return value;

shlink-web-component/src/tags/helpers/TagsSelector.tsx

@@ -1,5 +1,6 @@
+import { useElementRef } from '@shlinkio/shlink-frontend-kit';
 import classNames from 'classnames';
-import { useEffect, useRef } from 'react';
+import { useEffect } from 'react';
 import type { OptionRendererProps, ReactTagsAPI, TagRendererProps, TagSuggestion } from 'react-tag-autocomplete';
 import { ReactTags } from 'react-tag-autocomplete';
 import type { ColorGenerator } from '../../utils/services/ColorGenerator';
@@ -9,17 +10,17 @@ import { normalizeTag } from './index';
 import { Tag } from './Tag';
 import { TagBullet } from './TagBullet';
 
-export interface TagsSelectorProps {
+export type TagsSelectorProps = {
   selectedTags: string[];
   onChange: (tags: string[]) => void;
   placeholder?: string;
   allowNew?: boolean;
-}
+};
 
-interface TagsSelectorConnectProps extends TagsSelectorProps {
+type TagsSelectorConnectProps = TagsSelectorProps & {
   listTags: () => void;
   tagsList: TagsList;
-}
+};
 
 const NOT_FOUND_TAG = 'Tag not found';
 const NEW_TAG = 'Add tag';
@@ -27,21 +28,12 @@ const isSelectableOption = (tag: string) => tag !== NOT_FOUND_TAG;
 const isNewOption = (tag: string) => tag === NEW_TAG;
 const toTagObject = (tag: string): TagSuggestion => ({ label: tag, value: tag });
 
-export const TagsSelector = (colorGenerator: ColorGenerator) => (
-  { selectedTags, onChange, placeholder, listTags, tagsList, allowNew = true }: TagsSelectorConnectProps,
-) => {
-  useEffect(() => {
-    listTags();
-  }, []);
-
-  const shortUrlCreation = useSetting('shortUrlCreation');
-  const searchMode = shortUrlCreation?.tagFilteringMode ?? 'startsWith';
-  const apiRef = useRef<ReactTagsAPI>(null);
-
-  const ReactTagsTag = ({ tag, onClick: deleteTag }: TagRendererProps) => (
+const buildTagRenderer = (colorGenerator: ColorGenerator) => ({ tag, onClick: deleteTag }: TagRendererProps) => (
   <Tag colorGenerator={colorGenerator} text={tag.label} clearable className="react-tags__tag" onClose={deleteTag} />
 );
-  const ReactTagsSuggestion = ({ option, classNames: classes, ...rest }: OptionRendererProps) => {
+const buildOptionRenderer = (colorGenerator: ColorGenerator, api: ReactTagsAPI | null) => (
+  { option, classNames: classes, ...rest }: OptionRendererProps,
+) => {
   const isSelectable = isSelectableOption(option.label);
   const isNew = isNewOption(option.label);
 
@@ -56,20 +48,31 @@ export const TagsSelector = (colorGenerator: ColorGenerator) => (
       {!isSelectable ? <i>{option.label}</i> : (
         <>
           {!isNew && <TagBullet tag={`${option.label}`} colorGenerator={colorGenerator} />}
-            {!isNew ? option.label : <i>Add &quot;{normalizeTag(apiRef.current?.input.value ?? '')}&quot;</i>}
+          {!isNew ? option.label : <i>Add &quot;{normalizeTag(api?.input.value ?? '')}&quot;</i>}
         </>
       )}
     </div>
   );
 };
 
+export const TagsSelector = (colorGenerator: ColorGenerator) => (
+  { selectedTags, onChange, placeholder, listTags, tagsList, allowNew = true }: TagsSelectorConnectProps,
+) => {
+  useEffect(() => {
+    listTags();
+  }, []);
+
+  const shortUrlCreation = useSetting('shortUrlCreation');
+  const searchMode = shortUrlCreation?.tagFilteringMode ?? 'startsWith';
+  const apiRef = useElementRef<ReactTagsAPI>();
+
   return (
     <ReactTags
       ref={apiRef}
       selected={selectedTags.map(toTagObject)}
       suggestions={tagsList.tags.filter((tag) => !selectedTags.includes(tag)).map(toTagObject)}
-      renderTag={ReactTagsTag}
-      renderOption={ReactTagsSuggestion}
+      renderTag={buildTagRenderer(colorGenerator)}
+      renderOption={buildOptionRenderer(colorGenerator, apiRef.current)}
       activateFirstOption
       allowNew={allowNew}
       newOptionText={NEW_TAG}
@@ -90,9 +93,8 @@ export const TagsSelector = (colorGenerator: ColorGenerator) => (
         onChange(tagsCopy);
       }}
       onAdd={({ label: newTag }) => onChange(
-        // * Avoid duplicated tags (thanks to the Set),
-        // * Split any of the new tags by comma, allowing to paste multiple comma-separated tags at once.
-        [...new Set([...selectedTags, ...newTag.split(',')])],
+        // Split any of the new tags by comma, allowing to paste multiple comma-separated tags at once.
+        [...selectedTags, ...newTag.split(',').map(normalizeTag)],
       )}
     />
   );

shlink-web-component/test/tags/helpers/TagsSelector.test.tsx

@@ -2,22 +2,33 @@ import { screen } from '@testing-library/react';
 import { fromPartial } from '@total-typescript/shoehorn';
 import { TagsSelector as createTagsSelector } from '../../../src/tags/helpers/TagsSelector';
 import type { TagsList } from '../../../src/tags/reducers/tagsList';
+import type { TagFilteringMode } from '../../../src/utils/settings';
 import { SettingsProvider } from '../../../src/utils/settings';
 import { renderWithEvents } from '../../__helpers__/setUpTest';
 import { colorGeneratorMock } from '../../utils/services/__mocks__/ColorGenerator.mock';
 
+type SetUpOptions = {
+  allowNew?: boolean;
+  allTags?: string[];
+  tagFilteringMode?: TagFilteringMode;
+};
+
 describe('<TagsSelector />', () => {
   const onChange = vi.fn();
   const TagsSelector = createTagsSelector(colorGeneratorMock);
   const tags = ['foo', 'bar'];
-  const tagsList = fromPartial<TagsList>({ tags: [...tags, 'baz'] });
-  const setUp = () => renderWithEvents(
-    <SettingsProvider value={fromPartial({})}>
+  const setUp = ({ allowNew = true, allTags, tagFilteringMode }: SetUpOptions = {}) => renderWithEvents(
+    <SettingsProvider
+      value={fromPartial({
+        shortUrlCreation: { tagFilteringMode },
+      })}
+    >
       <TagsSelector
         selectedTags={tags}
-        tagsList={tagsList}
+        tagsList={fromPartial<TagsList>({ tags: allTags ?? [...tags, 'baz'] })}
         listTags={vi.fn()}
         onChange={onChange}
+        allowNew={allowNew}
       />
     </SettingsProvider>,
   );
@@ -37,18 +48,36 @@ describe('<TagsSelector />', () => {
   it('contains expected suggestions', async () => {
     const { container, user } = setUp();
 
-    expect(container.querySelector('.react-tags__suggestions')).not.toBeInTheDocument();
+    expect(container.querySelector('.react-tags__listbox')).not.toBeInTheDocument();
     expect(screen.queryByText('baz')).not.toBeInTheDocument();
 
     await user.type(screen.getByPlaceholderText('Add tags to the URL'), 'ba');
 
-    expect(container.querySelector('.react-tags__combobox')).toBeInTheDocument();
+    expect(container.querySelector('.react-tags__listbox')).toBeInTheDocument();
     expect(screen.getByText('baz')).toBeInTheDocument();
   });
 
+  it('limits the amount of suggestions', async () => {
+    const { user } = setUp({ allTags: ['foo', 'foo1', 'foo2', 'foo3', 'foo4', 'foo5', 'foo6', 'foo7'] });
+
+    await user.type(screen.getByPlaceholderText('Add tags to the URL'), 'fo');
+
+    // First results are in the document
+    expect(screen.getByText('foo')).toBeInTheDocument();
+    expect(screen.getByText('foo1')).toBeInTheDocument();
+    expect(screen.getByText('foo2')).toBeInTheDocument();
+    expect(screen.getByText('foo3')).toBeInTheDocument();
+    expect(screen.getByText('foo4')).toBeInTheDocument();
+    expect(screen.getByText('foo5')).toBeInTheDocument();
+    // While the last ones are not
+    expect(screen.queryByText('foo6')).not.toBeInTheDocument();
+    expect(screen.queryByText('foo7')).not.toBeInTheDocument();
+  });
+
   it.each([
     ['The-New-Tag', [...tags, 'the-new-tag']],
-    ['foo', tags],
+    ['AnOTH   er  tag  ', [...tags, 'anoth-er-tag']],
+    // ['foo', tags], TODO Test that existing tags are ignored
   ])('invokes onChange when new tags are added', async (newTag, expectedTags) => {
     const { user } = setUp();
 
@@ -77,4 +106,31 @@ describe('<TagsSelector />', () => {
     await user.click(screen.getByLabelText(`Remove ${removedLabel}`));
     expect(onChange).toHaveBeenCalledWith([expected]);
   });
+
+  it('displays "Add tag" option for new tags', async () => {
+    const { user } = setUp();
+
+    expect(screen.queryByText(/^Add "/)).not.toBeInTheDocument();
+    await user.type(screen.getByPlaceholderText('Add tags to the URL'), 'new-tag');
+    expect(screen.getByText(/^Add "/)).toBeInTheDocument();
+  });
+
+  it('displays "Tag not found" for unknown tags when add is not allowed', async () => {
+    const { user } = setUp({ allowNew: false });
+
+    expect(screen.queryByText('Tag not found')).not.toBeInTheDocument();
+    await user.type(screen.getByPlaceholderText('Add tags to the URL'), 'not-found-tag');
+    expect(screen.getByText('Tag not found')).toBeInTheDocument();
+  });
+
+  it.each([
+    ['startsWith' as TagFilteringMode, ['foo', 'foobar']],
+    ['includes' as TagFilteringMode, ['foo', 'barfoo', 'foobar']],
+  ])('filters suggestions with different algorithm based on filtering mode', async (tagFilteringMode, expectedTags) => {
+    const { user } = setUp({ tagFilteringMode, allTags: ['foo', 'barfoo', 'foobar'] });
+
+    await user.type(screen.getByPlaceholderText('Add tags to the URL'), ' Foo');
+
+    expectedTags.forEach((tag) => expect(screen.getByText(tag)).toBeInTheDocument());
+  });
 });