- Testing: Separate tests into unit/ui; split UI tests by specific domain;

setup browser-bug folder and ui issues folder
- Testing: Create test utilities for selecting English and visiting and
  approving storage
- Testing: Add test for tool selection

cypress/integration/unit/units.js

@@ -0,0 +1,93 @@
+import '../../../instrumented/jquery.min.js';
+
+import * as units from '../../../instrumented/units.js';
+
+describe('units', function () {
+  /**
+   * Set up tests, supplying mock data.
+   * @returns {void}
+   */
+  beforeEach(() => {
+    document.body.textContent = '';
+    const anchor = document.createElement('div');
+    anchor.id = 'anchor';
+    anchor.style.visibility = 'hidden';
+
+    const elementsContainer = document.createElement('div');
+    elementsContainer.id = 'elementsContainer';
+
+    const uniqueId = document.createElement('div');
+    uniqueId.id = 'uniqueId';
+    uniqueId.style.visibility = 'hidden';
+
+    const nonUniqueId = document.createElement('div');
+    nonUniqueId.id = 'nonUniqueId';
+    nonUniqueId.style.visibility = 'hidden';
+
+    elementsContainer.append(uniqueId, nonUniqueId);
+
+    document.body.append(anchor, elementsContainer);
+
+    units.init(
+      /**
+      * @implements {module:units.ElementContainer}
+      */
+      {
+        getBaseUnit () { return 'cm'; },
+        getHeight () { return 600; },
+        getWidth () { return 800; },
+        getRoundDigits () { return 4; },
+        getElement (elementId) { return document.getElementById(elementId); }
+      }
+    );
+  });
+
+  it('Test svgedit.units package', function () {
+    assert.ok(units);
+    assert.equal(typeof units, typeof {});
+  });
+
+  it('Test svgedit.units.shortFloat()', function () {
+    assert.ok(units.shortFloat);
+    assert.equal(typeof units.shortFloat, typeof function () { /* */ });
+
+    const {shortFloat} = units;
+    assert.equal(shortFloat(0.00000001), 0);
+    assert.equal(shortFloat(1), 1);
+    assert.equal(shortFloat(3.45678), 3.4568);
+    assert.equal(shortFloat(1.23443), 1.2344);
+    assert.equal(shortFloat(1.23455), 1.2346);
+  });
+
+  it('Test svgedit.units.isValidUnit()', function () {
+    assert.ok(units.isValidUnit);
+    assert.equal(typeof units.isValidUnit, typeof function () { /* */ });
+
+    const {isValidUnit} = units;
+    assert.ok(isValidUnit('0'));
+    assert.ok(isValidUnit('1'));
+    assert.ok(isValidUnit('1.1'));
+    assert.ok(isValidUnit('-1.1'));
+    assert.ok(isValidUnit('.6mm'));
+    assert.ok(isValidUnit('-.6cm'));
+    assert.ok(isValidUnit('6000in'));
+    assert.ok(isValidUnit('6px'));
+    assert.ok(isValidUnit('6.3pc'));
+    assert.ok(isValidUnit('-0.4em'));
+    assert.ok(isValidUnit('-0.ex'));
+    assert.ok(isValidUnit('40.123%'));
+
+    assert.equal(isValidUnit('id', 'uniqueId', document.getElementById('uniqueId')), true);
+    assert.equal(isValidUnit('id', 'newId', document.getElementById('uniqueId')), true);
+    assert.equal(isValidUnit('id', 'uniqueId'), false);
+    assert.equal(isValidUnit('id', 'uniqueId', document.getElementById('nonUniqueId')), false);
+  });
+
+  it('Test svgedit.units.convertUnit()', function () {
+    assert.ok(units.convertUnit);
+    assert.equal(typeof units.convertUnit, typeof function () { /* */ });
+    // cm in default setup
+    assert.equal(units.convertUnit(42), 1.1113);
+    assert.equal(units.convertUnit(42, 'px'), 42);
+  });
+});