100 lines
3.3 KiB
TypeScript
100 lines
3.3 KiB
TypeScript
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import { describe, expect, test } from 'bun:test';
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import { normalizePath } from './pathNormalization';
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describe('normalizePath', () => {
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describe('non-string inputs', () => {
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test('returns null for null', () => {
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expect(normalizePath(null)).toBeNull();
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});
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test('returns null for undefined', () => {
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expect(normalizePath(undefined)).toBeNull();
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});
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test('returns null for empty string', () => {
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expect(normalizePath('')).toBeNull();
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});
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test('returns null for whitespace-only', () => {
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expect(normalizePath(' ')).toBeNull();
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});
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});
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describe('backslashes', () => {
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test('converts backslashes to forward slashes', () => {
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expect(normalizePath('C:\\Users\\me\\project')).toBe('C:/Users/me/project');
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});
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});
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describe('drive letter casing', () => {
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test('uppercases lowercase Windows drive letter', () => {
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expect(normalizePath('c:\\Users\\me\\project')).toBe('C:/Users/me/project');
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});
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test('preserves already-uppercase drive letter', () => {
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expect(normalizePath('C:\\Users\\me\\project')).toBe('C:/Users/me/project');
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});
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test('does not match multi-character tokens before colon', () => {
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expect(normalizePath('abc:def')).toBe('abc:def');
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});
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test('does not touch drive letter in middle of path', () => {
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// Only the leading drive letter is touched; a "c:" later in the
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// path is left alone (no upper-casing, no backslash conversion of
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// the surrounding characters beyond the backslash-to-slash step).
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expect(normalizePath('/foo/c:\\bar')).toBe('/foo/c:/bar');
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});
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});
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describe('trailing slashes', () => {
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test('strips a single trailing slash', () => {
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expect(normalizePath('C:/Users/me/')).toBe('C:/Users/me');
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});
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test('strips multiple trailing slashes', () => {
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expect(normalizePath('C:/Users/me///')).toBe('C:/Users/me');
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});
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test('preserves root /', () => {
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expect(normalizePath('/')).toBe('/');
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});
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test('preserves single-char after slash strip', () => {
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expect(normalizePath('C:/')).toBe('C:');
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});
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});
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describe('degenerate slash-only inputs', () => {
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// '///' → stays '///' after backslash replace → trailing-slash strip
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// yields '' → null. This is the new defensive behavior.
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test('returns null for multiple forward slashes', () => {
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expect(normalizePath('///')).toBeNull();
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});
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// '\\\\' in source = 2 backslash chars → replace to '//' → strip → '' → null.
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test('returns null for multiple backslashes', () => {
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expect(normalizePath('\\\\')).toBeNull();
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});
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// A single backslash '\\' is normalized to a single forward slash
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// and treated as the filesystem root, returned as '/'. (This is the
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// pre-existing behavior; the defensive fix only adds null for
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// slash-only inputs that strip down to ''.)
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test('normalizes a single backslash to the root "/"', () => {
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expect(normalizePath('\\')).toBe('/');
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});
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});
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describe('Unix paths', () => {
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test('passes through a Unix path unchanged', () => {
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expect(normalizePath('/home/user/project')).toBe('/home/user/project');
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});
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test('strips trailing slashes from Unix paths', () => {
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expect(normalizePath('/home/user/project/')).toBe('/home/user/project');
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});
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});
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});
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