fix: RtlScrollConverter test on high dpi systems in fast-web-utilities (

#6857) * fix RtlScrollConverter test for high dpi systems - Adjusts the scrollLeft check to consider the devicePixelRatio * Change files
microsoft · Nov 8, 2023 · a7a3c89 · a7a3c89
1 parent 0eb5c61
commit a7a3c89
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diff --git a/change/@microsoft-fast-web-utilities-14b2f190-1571-4498-ba72-68bbafb26a20.json b/change/@microsoft-fast-web-utilities-14b2f190-1571-4498-ba72-68bbafb26a20.json
@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "fix RtlScrollConverter test for high dpi systems",
+  "packageName": "@microsoft/fast-web-utilities",
+  "email": "[email protected]",
+  "dependentChangeType": "none"
+}
diff --git a/packages/utilities/fast-web-utilities/src/rtl-scroll-converter.spec.ts b/packages/utilities/fast-web-utilities/src/rtl-scroll-converter.spec.ts
@@ -103,12 +103,13 @@ describe("RtlScrollConverter", (): void => {
     });
 
     it("invertedGetRtlScrollConverter returns correct value", () => {
+        const scale = window.devicePixelRatio;
         const testElement: HTMLDivElement = getDummyDiv();
         document.body.appendChild(testElement);
         testElement.scrollLeft = 1;
 
         expect(RtlScrollConverter["invertedGetRtlScrollConverter"](testElement)).to.equal(
-            -1
+            -1 / scale
         );
     });