Merged in chore/price-calculation-tests (pull request #3072)

chore: Add more price calculation tests

* Add tests and refactor types for getVoucherPrice

* Add tests for sumPackagesRequestedPrice

* Add tests for calculateVat


Approved-by: Joakim Jäderberg

packages/booking-flow/lib/stores/enter-details/helpers.test.ts

@@ -2,7 +2,11 @@ import { describe, expect, it } from "vitest"
 
 import { CurrencyEnum } from "@scandic-hotels/common/constants/currency"
 
-import { getAdditionalPrice, getRedemptionPrice } from "./helpers"
+import {
+  getAdditionalPrice,
+  getRedemptionPrice,
+  getVoucherPrice,
+} from "./helpers"
 
 type GetAdditionalPriceParams = Parameters<typeof getAdditionalPrice>
 describe("getAdditionalPrice", () => {
@@ -307,3 +311,150 @@ describe("getRedemptionPrice", () => {
     })
   })
 })
+
+describe("getVoucherPrice", () => {
+  it("returns price 0 and default currency when rooms are empty", () => {
+    const result = getVoucherPrice([], 1)
+
+    expect(result).toEqual({
+      local: { price: 0, currency: CurrencyEnum.Voucher },
+      requested: undefined,
+    })
+  })
+
+  it("returns price for single room with voucher price", () => {
+    const nights = 1
+    const result = getVoucherPrice(
+      [
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            voucher: {
+              numberOfVouchers: 1,
+            },
+          },
+        },
+      ],
+      nights
+    )
+
+    expect(result).toEqual({
+      local: {
+        price: 1,
+        currency: CurrencyEnum.Voucher,
+        additionalPrice: 0,
+      },
+      requested: undefined,
+    })
+  })
+
+  it("returns price for single room with multiple nights", () => {
+    const nights = 3
+    const result = getVoucherPrice(
+      [
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            voucher: {
+              numberOfVouchers: 3,
+            },
+          },
+        },
+      ],
+      nights
+    )
+
+    expect(result).toEqual({
+      local: {
+        price: 3,
+        currency: CurrencyEnum.Voucher,
+        additionalPrice: 0,
+      },
+      requested: undefined,
+    })
+  })
+
+  it("returns price for multiple rooms with multiple nights", () => {
+    const nights = 3
+    const result = getVoucherPrice(
+      [
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            voucher: {
+              numberOfVouchers: 3,
+            },
+          },
+        },
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            voucher: {
+              numberOfVouchers: 2,
+            },
+          },
+        },
+      ],
+      nights
+    )
+
+    expect(result).toEqual({
+      local: {
+        price: 5,
+        currency: CurrencyEnum.Voucher,
+        additionalPrice: 0,
+      },
+      requested: undefined,
+    })
+  })
+
+  it("does not return price for room without voucher", () => {
+    const nights = 3
+    const result = getVoucherPrice(
+      [
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            redemption: {
+              localPrice: {
+                pointsPerStay: 150,
+                currency: CurrencyEnum.POINTS,
+                additionalPricePerStay: 0,
+              },
+            },
+          },
+        },
+        {
+          adults: 1,
+          breakfast: false,
+          roomFeatures: [],
+          roomRate: {
+            voucher: {
+              numberOfVouchers: 2,
+            },
+          },
+        },
+      ],
+      nights
+    )
+
+    expect(result).toEqual({
+      local: {
+        price: 2,
+        currency: CurrencyEnum.Voucher,
+        additionalPrice: 0,
+      },
+      requested: undefined,
+    })
+  })
+})

packages/booking-flow/lib/stores/enter-details/helpers.ts

@@ -14,7 +14,6 @@ import type {
   CorporateChequeProduct,
   PriceProduct,
   Product,
-  VoucherProduct,
 } from "@scandic-hotels/trpc/types/roomAvailability"
 import type { User } from "@scandic-hotels/trpc/types/user"
 
@@ -417,13 +416,17 @@ function getCorporateChequePrice(rooms: TRoom[], nights: number) {
     )
 }
 
-interface TRoomVoucher extends TRoom {
-  roomRate: VoucherProduct
+type VoucherRoom = PriceCalculationRoom & {
+  roomRate: {
+    voucher: {
+      numberOfVouchers: number
+    }
+  }
 }
 
-function getVoucherPrice(rooms: TRoom[], nights: number) {
+export function getVoucherPrice(rooms: PriceCalculationRoom[], nights: number) {
   return rooms
-    .filter((room): room is TRoomVoucher => "voucher" in room.roomRate)
+    .filter((room): room is VoucherRoom => "voucher" in room.roomRate)
     .reduce<Price>(
       (total, room) => {
         const voucher = room.roomRate.voucher
@@ -450,7 +453,7 @@ function getVoucherPrice(rooms: TRoom[], nights: number) {
     )
 }
 
-type GetRedemptionPriceRoom = {
+type PriceCalculationRoom = {
   adults: number
   breakfast:
     | { localPrice: { price: number; currency?: CurrencyEnum } }
@@ -465,7 +468,7 @@ type GetRedemptionPriceRoom = {
   // We don't care about roomRate unless it's RedemptionProduct
   roomRate: object
 }
-type RedemptionRoom = GetRedemptionPriceRoom & {
+type RedemptionRoom = PriceCalculationRoom & {
   roomRate: {
     redemption: {
       localPrice: {
@@ -478,7 +481,7 @@ type RedemptionRoom = GetRedemptionPriceRoom & {
 }
 
 export function getRedemptionPrice(
-  rooms: GetRedemptionPriceRoom[],
+  rooms: PriceCalculationRoom[],
   nights: number,
   pointsCurrency?: CurrencyEnum
 ) {

packages/booking-flow/lib/utils/SelectRate/index.test.ts

@@ -4,7 +4,12 @@ import { AlertTypeEnum } from "@scandic-hotels/common/constants/alert"
 import { CurrencyEnum } from "@scandic-hotels/common/constants/currency"
 import { dt } from "@scandic-hotels/common/dt"
 
-import { filterOverlappingDates, sumPackages } from "./index"
+import {
+  calculateVat,
+  filterOverlappingDates,
+  sumPackages,
+  sumPackagesRequestedPrice,
+} from "./index"
 
 import type { specialAlertsSchema } from "@scandic-hotels/trpc/routers/hotels/schemas/hotel/specialAlerts"
 import type { z } from "zod"
@@ -98,3 +103,42 @@ describe("sumPackages", () => {
     expect(result).toEqual({ currency: CurrencyEnum.SEK, price: 350 })
   })
 })
+
+describe("sumPackagesRequestedPrice", () => {
+  it("returns 0 price for null packages", () => {
+    const result = sumPackagesRequestedPrice(null)
+    expect(result).toEqual({ currency: undefined, price: 0 })
+  })
+
+  it("returns 0 price for undefined packages", () => {
+    const result = sumPackagesRequestedPrice(undefined)
+    expect(result).toEqual({ currency: undefined, price: 0 })
+  })
+
+  it("returns 0 price for empty packages", () => {
+    const result = sumPackagesRequestedPrice([])
+    expect(result).toEqual({ currency: undefined, price: 0 })
+  })
+
+  it("sums prices of packages", () => {
+    const result = sumPackagesRequestedPrice([
+      { requestedPrice: { totalPrice: 100, currency: CurrencyEnum.SEK } },
+      { requestedPrice: { totalPrice: 200, currency: CurrencyEnum.SEK } },
+      { requestedPrice: { totalPrice: 50, currency: CurrencyEnum.SEK } },
+    ])
+    expect(result).toEqual({ currency: CurrencyEnum.SEK, price: 350 })
+  })
+})
+
+describe("calculateVat", () => {
+  it("calculates VAT correctly", () => {
+    expect(calculateVat(100, 25)).toEqual({
+      priceExclVat: 80,
+      vatAmount: 20,
+    })
+    expect(calculateVat(5, 100)).toEqual({
+      priceExclVat: 2.5,
+      vatAmount: 2.5,
+    })
+  })
+})

packages/booking-flow/lib/utils/SelectRate/index.tsx

@@ -9,7 +9,6 @@ import { ChildBedTypeEnum } from "@scandic-hotels/trpc/enums/childBedTypeEnum"
 import { RoomPackageCodeEnum } from "@scandic-hotels/trpc/enums/roomFilter"
 
 import type { CurrencyEnum } from "@scandic-hotels/common/constants/currency"
-import type { Packages } from "@scandic-hotels/trpc/types/packages"
 import type { JSX } from "react"
 
 import type { RoomPackageCodes } from "../../types/components/selectRate/roomFilter"
@@ -63,7 +62,12 @@ export function sumPackages(
   )
 }
 
-export function sumPackagesRequestedPrice(packages: Packages | null) {
+export function sumPackagesRequestedPrice(
+  packages:
+    | { requestedPrice: { totalPrice: number; currency?: CurrencyEnum } }[]
+    | null
+    | undefined
+) {
   if (!packages || !packages.length) {
     return {
       currency: undefined,