test: basic tests for BodyClassManager, CSSUtils tests cleanup

src/modules/esl-utils/dom/body-cls.ts

@@ -18,7 +18,7 @@ export abstract class BodyClassManager {
    * */
   public static addCls(cls: string | null | undefined, lock: HTMLElement) {
     CSSUtil.splitTokens(cls).forEach((className) => {
-      this.lock(className, lock);
+      BodyClassManager.lock(className, lock);
       document.body.classList.add(className);
     });
   }
@@ -30,7 +30,7 @@ export abstract class BodyClassManager {
    * */
   public static removeCls(cls: string | null | undefined, lock: HTMLElement) {
     CSSUtil.splitTokens(cls).forEach((className) => {
-      if (!this.unlock(className, lock)) return;
+      if (!BodyClassManager.unlock(className, lock)) return;
       document.body.classList.remove(className);
     });
   }

src/modules/esl-utils/dom/test/body-cls.test.ts

@@ -0,0 +1,20 @@
+import {BodyClassManager} from '../body-cls';
+
+describe('dom/styles tests', () => {
+
+  const list = document.body.classList;
+  const lock1 = document.createElement('div');
+  const lock2 = document.createElement('div');
+
+  test('test case', () => {
+    BodyClassManager.toggleClsTo('a', lock1, true);
+    expect(list.contains('a')).toBeTruthy();
+    BodyClassManager.toggleClsTo('a',  lock2, true);
+    expect(list.contains('a')).toBeTruthy();
+
+    BodyClassManager.toggleClsTo('a',  lock1, false);
+    expect(list.contains('a')).toBeTruthy();
+    BodyClassManager.toggleClsTo('a',  lock2, false);
+    expect(list.contains('a')).toBeFalsy();
+  });
+});

src/modules/esl-utils/dom/test/styles.test.ts

@@ -1,6 +1,6 @@
 import {CSSUtil} from '../styles';
 
-describe('dom/styles helper tests', () => {
+describe('CSSUtil tests', () => {
   test('styles: crud simple', () => {
     const el = document.createElement('div');
 
@@ -35,7 +35,7 @@ describe('dom/styles helper tests', () => {
 
   test.each([
     [''], [' '], [null], [undefined]
-  ])('styles: safe check', (val) => {
+  ])('add %p safe check', (val) => {
     const el = document.createElement('div');
     expect(el.classList.length).toBe(0);
     CSSUtil.addCls(el, val);