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.
55 lines
1.5 KiB
TypeScript
55 lines
1.5 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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export function testParameterName(action: (parameterName: string) => string) {
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describe('name', () => {
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describe('sets as expected', () => {
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// arrange
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const expectedValues: readonly string[] = [
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'lowercase',
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'onlyLetters',
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'l3tt3rsW1thNumb3rs',
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];
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for (const expected of expectedValues) {
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it(expected, () => {
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// act
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const value = action(expected);
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// assert
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expect(value).to.equal(expected);
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});
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}
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});
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describe('throws if invalid', () => {
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// arrange
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const testScenarios: readonly {
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readonly description: string;
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readonly value: string;
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readonly expectedError: string;
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}[] = [
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{
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description: 'empty Name',
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value: '',
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expectedError: 'missing parameter name',
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},
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{
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description: 'has @',
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value: 'b@d',
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expectedError: 'parameter name must be alphanumeric but it was "b@d"',
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},
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{
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description: 'has {',
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value: 'b{a}d',
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expectedError: 'parameter name must be alphanumeric but it was "b{a}d"',
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},
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];
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for (const { description, value, expectedError } of testScenarios) {
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it(description, () => {
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// act
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const act = () => action(value);
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// assert
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expect(act).to.throw(expectedError);
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});
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}
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});
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});
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}
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