1 files changed, 32 insertions, 0 deletions
diff --git a/spec/javascripts/lib/utils/image_utility_spec.js b/spec/javascripts/lib/utils/image_utility_spec.js
new file mode 100644
index 00000000000..75addfcc833
--- /dev/null
+++ b/spec/javascripts/lib/utils/image_utility_spec.js
@@ -0,0 +1,32 @@
+import * as imageUtility from '~/lib/utils/image_utility';
+
+describe('imageUtility', () => {
+  describe('isImageLoaded', () => {
+    it('should return false when image.complete is false', () => {
+      const element = {
+        complete: false,
+        naturalHeight: 100,
+      };
+
+      expect(imageUtility.isImageLoaded(element)).toEqual(false);
+    });
+
+    it('should return false when naturalHeight = 0', () => {
+      const element = {
+        complete: true,
+        naturalHeight: 0,
+      };
+
+      expect(imageUtility.isImageLoaded(element)).toEqual(false);
+    });
+
+    it('should return true when image.complete and naturalHeight != 0', () => {
+      const element = {
+        complete: true,
+        naturalHeight: 100,
+      };
+
+      expect(imageUtility.isImageLoaded(element)).toEqual(true);
+    });
+  });
+});