Phase 1A done

tests/legacy-consumer-migration-planner.test.ts

@@ -0,0 +1,57 @@
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import {
+  inferSectionKeyFromEquipmentIdentifier,
+  inferSectionKeyFromLegacyInput,
+  normalizeCircuitNumber,
+} from "../src/domain/services/legacy-consumer-migration-planner.js";
+
+describe("legacy consumer migration planner", () => {
+  it("normalizes valid circuit numbers and rejects invalid formats", () => {
+    assert.equal(normalizeCircuitNumber(" -2f12 "), "-2F12");
+    assert.equal(normalizeCircuitNumber("2F12"), null);
+    assert.equal(normalizeCircuitNumber(""), null);
+    assert.equal(normalizeCircuitNumber(null), null);
+  });
+
+  it("infers section from equipment identifier prefix", () => {
+    assert.equal(inferSectionKeyFromEquipmentIdentifier("-1F4"), "lighting");
+    assert.equal(inferSectionKeyFromEquipmentIdentifier("-2F8"), "single_phase");
+    assert.equal(inferSectionKeyFromEquipmentIdentifier("-3F1"), "three_phase");
+    assert.equal(inferSectionKeyFromEquipmentIdentifier("-9F1"), null);
+  });
+
+  it("infers section from category/phase when circuit number is missing", () => {
+    assert.equal(
+      inferSectionKeyFromLegacyInput({
+        id: "1",
+        circuitNumber: null,
+        category: "Beleuchtung",
+        phaseType: null,
+        phaseCount: null,
+      }),
+      "lighting"
+    );
+    assert.equal(
+      inferSectionKeyFromLegacyInput({
+        id: "2",
+        circuitNumber: null,
+        category: null,
+        phaseType: "three-phase",
+        phaseCount: null,
+      }),
+      "three_phase"
+    );
+    assert.equal(
+      inferSectionKeyFromLegacyInput({
+        id: "3",
+        circuitNumber: null,
+        category: null,
+        phaseType: null,
+        phaseCount: null,
+      }),
+      null
+    );
+  });
+});
+