fix test

Author: f-idiris

src/__tests__/units/helpers/format.test.tsx

@@ -90,7 +90,7 @@ describe('Test format helper', () => {
         peaks: any, layout: string, decimal: number, shift: any, isAscend: boolean,
         isIntensity: boolean, boundary: any,
         integration: any, atIndex: number,
-        fixedWavelength: number
+        fixedWavelength: string
       }
       let params: ParamForPeaks
       beforeEach(() => {
@@ -102,7 +102,7 @@ describe('Test format helper', () => {
           isAscend: false,
           isIntensity: false, boundary: {},
           integration: null, atIndex: 0,
-          fixedWavelength: 10,
+          fixedWavelength: '10',
         }
       })