feat(shopping): removeRecipeFromCart

tests/integration/shopping-repository.test.ts

@@ -3,6 +3,7 @@ import { openInMemoryForTest } from '../../src/lib/server/db';
 import { insertRecipe } from '../../src/lib/server/recipes/repository';
 import {
   addRecipeToCart,
+  removeRecipeFromCart,
   listShoppingList
 } from '../../src/lib/server/shopping/repository';
 import type { Recipe } from '../../src/lib/types';
@@ -63,3 +64,23 @@ describe('addRecipeToCart', () => {
     expect(listShoppingList(db).recipes[0].servings).toBe(4);
   });
 });
+
+describe('removeRecipeFromCart', () => {
+  it('deletes only the given recipe', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(db, recipe({ title: 'A' }));
+    const b = insertRecipe(db, recipe({ title: 'B' }));
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+    removeRecipeFromCart(db, a);
+    const snap = listShoppingList(db);
+    expect(snap.recipes).toHaveLength(1);
+    expect(snap.recipes[0].recipe_id).toBe(b);
+  });
+
+  it('is idempotent when recipe is not in cart', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe());
+    expect(() => removeRecipeFromCart(db, id)).not.toThrow();
+  });
+});