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Refactor to enforce strictNullChecks

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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.
This commit is contained in:
undergroundwires
2023-11-12 22:54:00 +01:00
parent 7ab16ecccb
commit 949fac1a7c
294 changed files with 2477 additions and 2738 deletions
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57
tests/unit/application/Common/Array.spec.ts
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@@ -1,36 +1,9 @@
import { describe, it, expect } from 'vitest';
import { scrambledEqual, sequenceEqual } from '@/application/Common/Array';
import { itEachAbsentObjectValue } from '@tests/unit/shared/TestCases/AbsentTests';
import { ComparerTestScenario } from './Array.ComparerTestScenario';
describe('Array', () => {
describe('scrambledEqual', () => {
describe('throws if arguments are absent', () => {
describe('first argument is absent', () => {
itEachAbsentObjectValue((absentValue) => {
// arrange
const expectedError = 'missing first array';
const firstArray = absentValue;
const secondArray = [];
// act
const act = () => scrambledEqual(firstArray, secondArray);
// assert
expect(act).to.throw(expectedError);
});
});
describe('second argument is absent', () => {
itEachAbsentObjectValue((absentValue) => {
// arrange
const expectedError = 'missing second array';
const firstArray = [];
const secondArray = absentValue;
// act
const act = () => scrambledEqual(firstArray, secondArray);
// assert
expect(act).to.throw(expectedError);
});
});
});
describe('returns as expected', () => {
// arrange
const scenario = new ComparerTestScenario()
@@ -49,43 +22,17 @@ describe('Array', () => {
});
});
describe('sequenceEqual', () => {
describe('throws if arguments are absent', () => {
describe('first argument is absent', () => {
itEachAbsentObjectValue((absentValue) => {
// arrange
const expectedError = 'missing first array';
const firstArray = absentValue;
const secondArray = [];
// act
const act = () => sequenceEqual(firstArray, secondArray);
// assert
expect(act).to.throw(expectedError);
});
});
describe('second argument is absent', () => {
itEachAbsentObjectValue((absentValue) => {
// arrange
const expectedError = 'missing second array';
const firstArray = [];
const secondArray = absentValue;
// act
const act = () => sequenceEqual(firstArray, secondArray);
// assert
expect(act).to.throw(expectedError);
});
});
});
describe('returns as expected', () => {
// arrange
const scenario = new ComparerTestScenario()
.addSameItemsWithSameOrder(true)
.addSameItemsWithDifferentOrder(true)
.addSameItemsWithDifferentOrder(false)
.addDifferentItemsWithSameLength(false)
.addDifferentItemsWithDifferentLength(false);
// act
scenario.forEachCase((testCase) => {
it(testCase.name, () => {
const actual = scrambledEqual(testCase.first, testCase.second);
const actual = sequenceEqual(testCase.first, testCase.second);
// assert
expect(actual).to.equal(testCase.expected);
});