test(unescape): add test coverage

Author: char0n

test/unescape.js

@@ -0,0 +1,33 @@
+import { assert } from 'chai';
+
+import { unescape } from '../src/index.js';
+
+describe('unescape', function () {
+  it('should replace "~1" with "/"', function () {
+    assert.strictEqual(unescape('foo~1bar'), 'foo/bar');
+  });
+
+  it('should replace "~0" with "~"', function () {
+    assert.strictEqual(unescape('foo~0bar'), 'foo~bar');
+  });
+
+  it('should replace both "~1" and "~0" correctly', function () {
+    assert.strictEqual(unescape('foo~1bar~0baz'), 'foo/bar~baz');
+  });
+
+  it('should handle multiple occurrences of "~1" and "~0"', function () {
+    assert.strictEqual(unescape('~1foo~0bar~1baz~0qux'), '/foo~bar/baz~qux');
+  });
+
+  it('should return the same string if there are no "~1" or "~0" sequences', function () {
+    assert.strictEqual(unescape('foobar'), 'foobar');
+  });
+
+  it('should handle an empty string correctly', function () {
+    assert.strictEqual(unescape(''), '');
+  });
+
+  it('should not modify unrelated characters', function () {
+    assert.strictEqual(unescape('foo-bar_baz~9'), 'foo-bar_baz~9');
+  });
+});