test('extname', () => {
const failures = [] as string[];
const slashRE = /\//g;
[
[__filename, '.js'],
['', ''],
['/path/to/file', ''],
['/path/to/file.ext', '.ext'],
['/path.to/file.ext', '.ext'],
['/path.to/file', ''],
['/path.to/.file', ''],
['/path.to/.file.ext', '.ext'],
['/path/to/f.ext', '.ext'],
['/path/to/..ext', '.ext'],
['/path/to/..', ''],
['file', ''],
['file.ext', '.ext'],
['.file', ''],
['.file.ext', '.ext'],
['/file', ''],
['/file.ext', '.ext'],
['/.file', ''],
['/.file.ext', '.ext'],
['.path/file.ext', '.ext'],
['file.ext.ext', '.ext'],
['file.', '.'],
['.', ''],
['./', ''],
['.file.ext', '.ext'],
['.file', ''],
['.file.', '.'],
['.file..', '.'],
['..', ''],
['../', ''],
['..file.ext', '.ext'],
['..file', '.file'],
['..file.', '.'],
['..file..', '.'],
['...', '.'],
['...ext', '.ext'],
['....', '.'],
['file.ext/', '.ext'],
['file.ext//', '.ext'],
['file/', ''],
['file//', ''],
['file./', '.'],
['file.//', '.'],
].forEach((test) => {
const expected = test[1];
[path.posix.extname, path.win32.extname].forEach((extname) => {
let input = test[0];
let os;
if (extname === path.win32.extname) {
input = input.replace(slashRE, '\\');
os = 'win32';
} else {
os = 'posix';
}
const actual = extname(input);
const message = `path.${os}.extname(${JSON.stringify(input)})\n expect=${
JSON.stringify(expected)}\n actual=${JSON.stringify(actual)}`;
if (actual !== expected) {
failures.push(`\n${message}`);
}
});
{
const input = `C:${test[0].replace(slashRE, '\\')}`;
const actual = path.win32.extname(input);
const message = `path.win32.extname(${JSON.stringify(input)})\n expect=${
JSON.stringify(expected)}\n actual=${JSON.stringify(actual)}`;
if (actual !== expected) {
failures.push(`\n${message}`);
}
}
});
assert.strictEqual(failures.length, 0, failures.join(''));
// On Windows, backslash is a path separator.
assert.strictEqual(path.win32.extname('.\\'), '');
assert.strictEqual(path.win32.extname('..\\'), '');
assert.strictEqual(path.win32.extname('file.ext\\'), '.ext');
assert.strictEqual(path.win32.extname('file.ext\\\\'), '.ext');
assert.strictEqual(path.win32.extname('file\\'), '');
assert.strictEqual(path.win32.extname('file\\\\'), '');
assert.strictEqual(path.win32.extname('file.\\'), '.');
assert.strictEqual(path.win32.extname('file.\\\\'), '.');
// On *nix, backslash is a valid name component like any other character.
assert.strictEqual(path.posix.extname('.\\'), '');
assert.strictEqual(path.posix.extname('..\\'), '.\\');
assert.strictEqual(path.posix.extname('file.ext\\'), '.ext\\');
assert.strictEqual(path.posix.extname('file.ext\\\\'), '.ext\\\\');
assert.strictEqual(path.posix.extname('file\\'), '');
assert.strictEqual(path.posix.extname('file\\\\'), '');
assert.strictEqual(path.posix.extname('file.\\'), '.\\');
assert.strictEqual(path.posix.extname('file.\\\\'), '.\\\\');
// Tests from VSCode
assert.equal(path.extname('far.boo'), '.boo');
//.........这里部分代码省略.........
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