107171d46a
* renaming test files * add eslint plugin jest * enable linting rule and additional rules * fix a metric ton of linting errors * fix lint errors * remove export
36 lines
948 B
TypeScript
36 lines
948 B
TypeScript
import { findFirstDiffPos } from './flash-cell';
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describe('findFirstDiffPos', () => {
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it('Returns -1 for matching strings', () => {
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const a = 'test';
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const b = 'test';
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expect(findFirstDiffPos(a, b)).toEqual(-1);
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});
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it('Returns -1 if a string is undefined (just in case)', () => {
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const a = 'test';
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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const b = undefined as any as string;
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expect(findFirstDiffPos(a, b)).toEqual(-1);
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expect(findFirstDiffPos(b, a)).toEqual(-1);
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});
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it('Returns -1 if one string is empty', () => {
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const a = 'test';
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const b = '';
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expect(findFirstDiffPos(a, b)).toEqual(-1);
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expect(findFirstDiffPos(b, a)).toEqual(-1);
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});
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it('Happy path', () => {
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const a = 'test';
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expect(findFirstDiffPos(a, 'test')).toEqual(-1);
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expect(findFirstDiffPos(a, '!est')).toEqual(0);
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expect(findFirstDiffPos(a, 't!st')).toEqual(1);
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});
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});
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