949fac1a7c
This commit applies `strictNullChecks` to the entire codebase to improve maintainability and type safety. Key changes include: - Remove some explicit null-checks where unnecessary. - Add necessary null-checks. - Refactor static factory functions for a more functional approach. - Improve some test names and contexts for better debugging. - Add unit tests for any additional logic introduced. - Refactor `createPositionFromRegexFullMatch` to its own function as the logic is reused. - Prefer `find` prefix on functions that may return `undefined` and `get` prefix for those that always return a value.
69 lines
2.8 KiB
TypeScript
69 lines
2.8 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { useClipboard } from '@/presentation/components/Shared/Hooks/Clipboard/UseClipboard';
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import { BrowserClipboard } from '@/presentation/components/Shared/Hooks/Clipboard/BrowserClipboard';
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import { ClipboardStub } from '@tests/unit/shared/Stubs/ClipboardStub';
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import { FunctionKeys } from '@/TypeHelpers';
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import { expectExists } from '@tests/shared/Assertions/ExpectExists';
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describe('useClipboard', () => {
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it(`returns an instance of ${BrowserClipboard.name}`, () => {
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// arrange
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const expectedType = BrowserClipboard;
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// act
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const clipboard = useClipboard();
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// assert
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expect(clipboard).to.be.instanceOf(expectedType);
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});
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it('does not create a new instance if one is provided', () => {
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// arrange
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const expectedClipboard = new ClipboardStub();
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// act
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const actualClipboard = useClipboard(expectedClipboard);
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// assert
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expect(actualClipboard).to.equal(expectedClipboard);
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});
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describe('supports object destructuring', () => {
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type ClipboardFunction = FunctionKeys<ReturnType<typeof useClipboard>>;
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const testScenarios: {
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readonly [FunctionName in ClipboardFunction]:
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Parameters<ReturnType<typeof useClipboard>[FunctionName]>;
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} = {
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copyText: ['text-arg'],
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};
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Object.entries(testScenarios).forEach(([functionName, testFunctionArgs]) => {
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describe(functionName, () => {
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it('binds the method to the instance', () => {
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// arrange
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const expectedArgs = testFunctionArgs;
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const clipboardStub = new ClipboardStub();
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// act
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const clipboard = useClipboard(clipboardStub);
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const { [functionName as ClipboardFunction]: testFunction } = clipboard;
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// assert
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testFunction(...expectedArgs);
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const call = clipboardStub.callHistory.find((c) => c.methodName === functionName);
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expectExists(call);
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expect(call.args).to.deep.equal(expectedArgs);
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});
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it('ensures method retains the clipboard instance context', () => {
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// arrange
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const clipboardStub = new ClipboardStub();
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const expectedThisContext = clipboardStub;
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let actualThisContext: typeof expectedThisContext | undefined;
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// eslint-disable-next-line func-names
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clipboardStub[functionName] = function () {
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// eslint-disable-next-line @typescript-eslint/no-this-alias
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actualThisContext = this;
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};
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// act
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const clipboard = useClipboard(clipboardStub);
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const { [functionName as ClipboardFunction]: testFunction } = clipboard;
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// assert
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testFunction(...testFunctionArgs);
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expect(expectedThisContext).to.equal(actualThisContext);
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});
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});
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});
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});
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});
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