From b0de7d1bc1373855b2b7197588d427b1e89f8383 Mon Sep 17 00:00:00 2001
From: Tom Fili <tom@cesium.com>
Date: Fri, 19 Jul 2019 13:15:38 -0400
Subject: [PATCH] Added test

---
 specs/lib/loadMtlSpec.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/specs/lib/loadMtlSpec.js b/specs/lib/loadMtlSpec.js
index 2af7f0a..72cedcd 100644
--- a/specs/lib/loadMtlSpec.js
+++ b/specs/lib/loadMtlSpec.js
@@ -321,6 +321,18 @@ describe('loadMtl', () => {
             expect(material.alphaMode).toBe('BLEND');
             expect(material.doubleSided).toBe(true);
         });
+
+        it('uses diffuse texture if diffuse and alpha are the same', () => {
+            options.metallicRoughness = true;
+
+            const material = loadMtl._createMaterial({
+                diffuseTexture : diffuseTexture,
+                alphaTexture : diffuseTexture
+            }, options);
+
+            const pbr = material.pbrMetallicRoughness;
+            expect(pbr.baseColorTexture).toBe(diffuseTexture);
+        });
     });
 
     describe('specularGlossiness', () => {