denoland-deno/fs/path/relative_test.ts

// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/

import { test } from "../../testing/mod.ts";
import { assertEquals } from "../../testing/asserts.ts";
import * as path from "./mod.ts";

const relativeTests = {
  win32:
    // arguments                     result
    [
      ["c:/blah\\blah", "d:/games", "d:\\games"],
      ["c:/aaaa/bbbb", "c:/aaaa", ".."],
      ["c:/aaaa/bbbb", "c:/cccc", "..\\..\\cccc"],
      ["c:/aaaa/bbbb", "c:/aaaa/bbbb", ""],
      ["c:/aaaa/bbbb", "c:/aaaa/cccc", "..\\cccc"],
      ["c:/aaaa/", "c:/aaaa/cccc", "cccc"],
      ["c:/", "c:\\aaaa\\bbbb", "aaaa\\bbbb"],
      ["c:/aaaa/bbbb", "d:\\", "d:\\"],
      ["c:/AaAa/bbbb", "c:/aaaa/bbbb", ""],
      ["c:/aaaaa/", "c:/aaaa/cccc", "..\\aaaa\\cccc"],
      ["C:\\foo\\bar\\baz\\quux", "C:\\", "..\\..\\..\\.."],
      [
        "C:\\foo\\test",
        "C:\\foo\\test\\bar\\package.json",
        "bar\\package.json"
      ],
      ["C:\\foo\\bar\\baz-quux", "C:\\foo\\bar\\baz", "..\\baz"],
      ["C:\\foo\\bar\\baz", "C:\\foo\\bar\\baz-quux", "..\\baz-quux"],
      ["\\\\foo\\bar", "\\\\foo\\bar\\baz", "baz"],
      ["\\\\foo\\bar\\baz", "\\\\foo\\bar", ".."],
      ["\\\\foo\\bar\\baz-quux", "\\\\foo\\bar\\baz", "..\\baz"],
      ["\\\\foo\\bar\\baz", "\\\\foo\\bar\\baz-quux", "..\\baz-quux"],
      ["C:\\baz-quux", "C:\\baz", "..\\baz"],
      ["C:\\baz", "C:\\baz-quux", "..\\baz-quux"],
      ["\\\\foo\\baz-quux", "\\\\foo\\baz", "..\\baz"],
      ["\\\\foo\\baz", "\\\\foo\\baz-quux", "..\\baz-quux"],
      ["C:\\baz", "\\\\foo\\bar\\baz", "\\\\foo\\bar\\baz"],
      ["\\\\foo\\bar\\baz", "C:\\baz", "C:\\baz"]
    ],
  posix:
    // arguments          result
    [
      ["/var/lib", "/var", ".."],
      ["/var/lib", "/bin", "../../bin"],
      ["/var/lib", "/var/lib", ""],
      ["/var/lib", "/var/apache", "../apache"],
      ["/var/", "/var/lib", "lib"],
      ["/", "/var/lib", "var/lib"],
      ["/foo/test", "/foo/test/bar/package.json", "bar/package.json"],
      ["/Users/a/web/b/test/mails", "/Users/a/web/b", "../.."],
      ["/foo/bar/baz-quux", "/foo/bar/baz", "../baz"],
      ["/foo/bar/baz", "/foo/bar/baz-quux", "../baz-quux"],
      ["/baz-quux", "/baz", "../baz"],
      ["/baz", "/baz-quux", "../baz-quux"]
    ]
};

test(function relative() {
  relativeTests.posix.forEach(function(p) {
    const expected = p[2];
    const actual = path.posix.relative(p[0], p[1]);
    assertEquals(actual, expected);
  });
});

test(function relativeWin32() {
  relativeTests.win32.forEach(function(p) {
    const expected = p[2];
    const actual = path.win32.relative(p[0], p[1]);
    assertEquals(actual, expected);
  });
});