test: add test for data-placeholder-background

ApoorvSaxena · Jul 24, 2020 · a12994d · a12994d
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Showing 4 changed files with 14 additions and 3 deletions.
diff --git a/dist/lozad.es.js b/dist/lozad.es.js
@@ -1,4 +1,4 @@
-/*! lozad.js - v1.15.0 - 2020-07-02
+/*! lozad.js - v1.15.0 - 2020-07-24
 * https://github.com/ApoorvSaxena/lozad.js
 * Copyright (c) 2020 Apoorv Saxena; Licensed MIT */
 

diff --git a/dist/lozad.js b/dist/lozad.js
@@ -1,4 +1,4 @@
-/*! lozad.js - v1.15.0 - 2020-07-02
+/*! lozad.js - v1.15.0 - 2020-07-24
 * https://github.com/ApoorvSaxena/lozad.js
 * Copyright (c) 2020 Apoorv Saxena; Licensed MIT */
 

diff --git a/dist/lozad.min.js b/dist/lozad.min.js
diff --git a/test/index.js b/test/index.js
@@ -206,6 +206,17 @@ describe('lozad', () => {
         'background-image: url(photo.jpg);'
       )
     })
+    // Handle image background placeholder
+    it('should load the image with data-placeholder-background attribute', () => {
+      const image = document.querySelectorAll('img')[0]
+      const bgImageSetAttr = 'red'
+      image.setAttribute('class', 'lozad')
+      image.setAttribute('data-placeholder-background', bgImageSetAttr)
+      const observer = lozad()
+      observer.observe()
+      assert.strictEqual('true', image.dataset.loaded)
+      assert.strictEqual(image.style.cssText, 'background: red;')
+    })
   })
 
   describe('when passing options', () => {