22541 extract breadcrumb route-map helpers and add precedence guard tests

components/breadcrumbs.js

@@ -13,6 +13,10 @@ import {
     setRepresentationSubmit
 } from "../store/currentView/action";
 import { resolveCaseBreadcrumbState } from "../lib/routing/routeState";
+import {
+    buildBreadcrumbRendererMaps,
+    resolveMappedRouteRenderer as resolveMappedRouteRendererByMaps
+} from "../lib/routing/breadcrumbRouteMaps";
 const Breadcrumbs = (props) => {
     const {
         currentView,
@@ -206,27 +210,14 @@ const Breadcrumbs = (props) => {
         )
     };
 
-    const mappedRouteRendererMaps = [
+    const mappedRouteRendererMaps = buildBreadcrumbRendererMaps({
         simpleRouteRenderersByPath,
         simpleLinkTextPairRenderersByPath,
         simpleMyPortalRouteRenderersByPath
-    ];
-
-    const getMappedRendererByPath = (path, routeRendererMap) =>
-        routeRendererMap[path] || null;
+    });
 
     const resolveMappedRouteRenderer = (path) => {
-        for (const routeRendererMap of mappedRouteRendererMaps) {
-            const routeRenderer = getMappedRendererByPath(
-                path,
-                routeRendererMap
-            );
-            if (routeRenderer) {
-                return routeRenderer;
-            }
-        }
-
-        return null;
+        return resolveMappedRouteRendererByMaps(path, mappedRouteRendererMaps);
     };
 
     const renderMappedRoute = (path, resolver = resolveMappedRouteRenderer) => {