feat: add acquisition and pricing domain rules

2026-09-08 17:51:51 -04:00
parent d964b4f0ac
commit 8576c8f788
3 changed files with 177 additions and 0 deletions
@@ -0,0 +1,59 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  calculateAcquisitionCostBasis,
+  createAcquisition,
+} from '../../src/modules/acquisitions/domain/acquisition.js';
+import {
+  calculateMedianPriceMinor,
+  createPricingObservation,
+} from '../../src/modules/pricing/domain/pricing-observation.js';
+
+test('calculates acquisition cost basis from all cost components', () => {
+  const total = calculateAcquisitionCostBasis({
+    costMinor: 1000,
+    shippingMinor: 150,
+    taxMinor: 75,
+    otherFeesMinor: 50,
+    estimatedTradeValueMinor: 200,
+  });
+
+  assert.equal(total, 1075);
+});
+
+test('rejects negative acquisition values and missing identity fields', () => {
+  assert.throws(
+    () => createAcquisition({
+      inventoryItemId: 'inventory-item-id',
+      method: 'PURCHASE',
+      costMinor: -1,
+    }),
+    /must be a non-negative integer minor unit/,
+  );
+
+  assert.throws(
+    () => createAcquisition({
+      inventoryItemId: '',
+      method: 'PURCHASE',
+      costMinor: 1000,
+    }),
+    /Inventory item ID is required/,
+  );
+});
+
+test('creates pricing observations and calculates a median observed price', () => {
+  const observation = createPricingObservation({
+    productId: 'product-id',
+    inventoryItemId: 'inventory-item-id',
+    providerId: 'ebay',
+    priceMinor: 2499,
+    currency: 'USD',
+    sourceIdentifier: 'listing-1',
+    conditionId: 'condition-id',
+  });
+
+  assert.equal(observation.currency, 'USD');
+  assert.equal(observation.priceMinor, 2499);
+  assert.equal(calculateMedianPriceMinor([1199, 2499, 2000]), 2000);
+});