refactor(breadcrumbs): map step-back route branches into renderer group

tests/phase22/breadcrumbs-route-map-structure.test.cjs

@@ -48,6 +48,12 @@ test("breadcrumbs/factory module includes expected mapped route definitions", as
         "Expected callback route renderer factory export"
     );
 
+    assert.strictEqual(
+        source.includes("export const createStepBackRouteRenderers ="),
+        true,
+        "Expected step-back route renderer factory export"
+    );
+
     assert.strictEqual(
         source.includes("export const createCaseDetailRouteRenderers ="),
         true,
@@ -114,6 +120,18 @@ test("breadcrumbs/factory module includes expected mapped route definitions", as
         "Expected /case to be mapped in createCallbackRouteRenderers"
     );
 
+    assert.strictEqual(
+        source.includes('"/newappeal/[appealtypes]": () => {'),
+        true,
+        "Expected /newappeal/[appealtypes] to be mapped in createStepBackRouteRenderers"
+    );
+
+    assert.strictEqual(
+        source.includes('"/myportal/[appealtypes]": () => {'),
+        true,
+        "Expected /myportal/[appealtypes] to be mapped in createStepBackRouteRenderers"
+    );
+
     assert.strictEqual(
         source.includes('"/case/[ticketnumber]": () =>'),
         true,
@@ -203,7 +221,7 @@ test("breadcrumbs/component composes mapped routes via imported factories and sh
     );
 
     assert.strictEqual(
-        /const\s+\{[\s\S]*simpleRouteRenderersByPath[\s\S]*newAppealRouteRenderersByPath[\s\S]*callbackRouteRenderersByPath[\s\S]*detailAndAccountRouteRenderersByPath[\s\S]*\}\s*=\s*createMappedRouteRendererGroups\s*\(/.test(
+        /const\s+\{[\s\S]*simpleRouteRenderersByPath[\s\S]*newAppealRouteRenderersByPath[\s\S]*callbackRouteRenderersByPath[\s\S]*stepBackRouteRenderersByPath[\s\S]*detailAndAccountRouteRenderersByPath[\s\S]*\}\s*=\s*createMappedRouteRendererGroups\s*\(/.test(
             source
         ),
         true,
@@ -290,6 +308,18 @@ test("breadcrumbs/component composes mapped routes via imported factories and sh
         "Expected /newappeal/selectappeal explicit branch to be removed after mapping"
     );
 
+    assert.strictEqual(
+        source.includes('isPath("/newappeal/[appealtypes]")'),
+        false,
+        "Expected /newappeal/[appealtypes] explicit branch to be removed after step-back mapping"
+    );
+
+    assert.strictEqual(
+        source.includes('isPath("/myportal/[appealtypes]")'),
+        false,
+        "Expected /myportal/[appealtypes] explicit branch to be removed after step-back mapping"
+    );
+
     assert.strictEqual(
         source.includes('isPath("/myportal/case/[ticketnumber]")'),
         false,
@@ -372,6 +402,9 @@ test("breadcrumbs/map builder preserves route map ordering", async () => {
     const callbackOrderIndex = mapBuilderSlice.indexOf(
         "callbackRouteRenderersByPath"
     );
+    const stepBackOrderIndex = mapBuilderSlice.indexOf(
+        "stepBackRouteRenderersByPath"
+    );
     const caseDetailOrderIndex = mapBuilderSlice.indexOf(
         "caseDetailRouteRenderersByPath"
     );
@@ -385,10 +418,11 @@ test("breadcrumbs/map builder preserves route map ordering", async () => {
             simpleMyPortalOrderIndex > simpleLinkTextPairOrderIndex &&
             newAppealOrderIndex > simpleMyPortalOrderIndex &&
             callbackOrderIndex > newAppealOrderIndex &&
-            caseDetailOrderIndex > callbackOrderIndex &&
+            stepBackOrderIndex > callbackOrderIndex &&
+            caseDetailOrderIndex > stepBackOrderIndex &&
             detailAndAccountOrderIndex > caseDetailOrderIndex,
         true,
-        "Expected map builder call to preserve explicit route-map ordering (simple -> link-text -> myportal -> new-appeal -> callback -> case detail -> detail/account)"
+        "Expected map builder call to preserve explicit route-map ordering (simple -> link-text -> myportal -> new-appeal -> callback -> step-back -> case detail -> detail/account)"
     );
 });