chore: initialize from frontend template 4dc033c

tests/unit/boundary-mapper.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+
+import { mapOperationPayload } from "../../src/adapters/http/resource-mapper.ts";
+import {
+  composeBoundaryMapperRegistry,
+  mappingSuccess,
+} from "../../src/contracts/boundary-mapper.ts";
+
+describe("platform DTO mapper boundary", () => {
+  it("fails closed when no feature mapper was injected", () => {
+    expect(mapOperationPayload("UNKNOWN", {})).toEqual({
+      ok: false,
+      code: "MAPPING_INVARIANT_REJECTED",
+    });
+  });
+
+  it("rejects duplicate mapper contributions before installation", () => {
+    const mapper = {
+      mapperId: "ResourceMapper",
+      mapperVersion: 1,
+      inputSchemaId: "ResourcePayload",
+      outputContractId: "Resource",
+      owner: "test",
+      maxOutputItems: 1,
+      map: (input: unknown) => mappingSuccess(input),
+    };
+    expect(() =>
+      composeBoundaryMapperRegistry([
+        { ResourceMapper: mapper },
+        { ResourceMapper: mapper },
+      ]),
+    ).toThrow("duplicate boundary mapper");
+  });
+});