Create flow centralization and cleanup

tests/unit/createFlowPaths.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it } from "vitest";
+import {
+  CREATE_FLOW_SYNC_DRAFT_QUERY,
+  CREATE_FLOW_SYNC_DRAFT_VALUE,
+  CREATE_ROUTES,
+  createFlowStepPath,
+  createFlowStepPathAfterStrippingReviewReturn,
+  createFlowStepPathWithSyncDraft,
+} from "../../app/(app)/create/utils/createFlowPaths";
+import { CREATE_FLOW_REVIEW_RETURN_QUERY_KEY } from "../../app/(app)/create/utils/flowSteps";
+
+describe("createFlowPaths (CR-92 §2)", () => {
+  it("createFlowStepPath builds segment path", () => {
+    expect(createFlowStepPath("review")).toBe("/create/review");
+  });
+
+  it("createFlowStepPath encodes query", () => {
+    expect(
+      createFlowStepPath("completed", { celebrate: "1", foo: "bar" }),
+    ).toBe("/create/completed?celebrate=1&foo=bar");
+  });
+
+  it("createFlowStepPathWithSyncDraft", () => {
+    expect(createFlowStepPathWithSyncDraft("final-review")).toBe(
+      `/create/final-review?${CREATE_FLOW_SYNC_DRAFT_QUERY}=${CREATE_FLOW_SYNC_DRAFT_VALUE}`,
+    );
+  });
+
+  it("createFlowStepPathAfterStrippingReviewReturn drops reviewReturn only", () => {
+    const sp = new URLSearchParams(
+      `a=1&${CREATE_FLOW_REVIEW_RETURN_QUERY_KEY}=final-review&b=2`,
+    );
+    expect(createFlowStepPathAfterStrippingReviewReturn("final-review", sp)).toBe(
+      "/create/final-review?a=1&b=2",
+    );
+  });
+
+  it("CREATE_ROUTES constants", () => {
+    expect(CREATE_ROUTES.review).toBe("/create/review");
+    expect(CREATE_ROUTES.completed).toBe("/create/completed");
+  });
+});