Add behavior specs

cliff.toml

@@ -18,7 +18,7 @@ body = """
     {% if previous.version %}\
         ## [{{ version | trim_start_matches(pat="v") }}](<REPO>/compare/{{ previous.version }}..{{ version }}) - {{ timestamp | date(format="%Y-%m-%d") }}
     {% else %}\
-        ## [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+        ## [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(timezone="America/New_York", format="%Y-%m-%d") }}
     {% endif %}\
 {% else %}\
     ## [unreleased]

packages/cfpb-design-system/src/utilities/atomic-helpers.spec.js

@@ -57,7 +57,7 @@ describe('atomic-helpers', () => {
         'Check that element is a DOM node with ' +
         `class ".${testClass}"`;
       /**
-       *
+       * Mock error function.
        */
       function errFunc() {
         checkDom(null, testClass);
@@ -68,7 +68,7 @@ describe('atomic-helpers', () => {
     it('should throw an error if element class not found', () => {
       const errMsg = 'mock-class not found on or in passed DOM node.';
       /**
-       *
+       * Mock error function.
        */
       function errFunc() {
         checkDom(componentDom, 'mock-class');

packages/cfpb-design-system/src/utilities/behavior/behavior.spec.js

@@ -0,0 +1,36 @@
+import { checkBehaviorDom, behaviorFind } from './behavior.js';
+
+let containerDom;
+
+const HTML_SNIPPET = `
+  <div id="container" data-js-hook="behavior_flyout-menu">
+    <button data-js-hook="behavior_flyout-menu_trigger">
+    <div data-js-hook="behavior_flyout-menu_content">…</div>
+  </div>
+`;
+
+describe('behaviors', () => {
+  beforeEach(() => {
+    document.body.innerHTML = HTML_SNIPPET;
+    containerDom = document.querySelector('#container');
+  });
+
+  describe('.checkBehaviorDom()', () => {
+    it('should return an HTML element', () => {
+      expect(
+        checkBehaviorDom(
+          containerDom,
+          'behavior_flyout-menu_content',
+        ).getAttribute('data-js-hook'),
+      ).toBe('behavior_flyout-menu_content');
+    });
+  });
+
+  describe('.behaviorFind()', () => {
+    it('should return an array with two items when selectors are found', () => {
+      const result = behaviorFind('flyout-menu', containerDom);
+      expect(result).toBeInstanceOf(NodeList);
+      expect(result.length).toBe(2);
+    });
+  });
+});