fix: update cost tests to match new calculateApiCost signature

Both calculateApiCostAnthropic and calculateApiCostOpenAI now return a number directly (the total cost) instead of an object with totalCost, totalInputTokens, and totalOutputTokens properties.

Author: hannesrudolph

src/utils/__tests__/cost.spec.ts

@@ -131,9 +131,7 @@ describe("Cost Utility", () => {
 			// Input cost: (3.0 / 1_000_000) * 1000 = 0.003
 			// Output cost: (15.0 / 1_000_000) * 500 = 0.0075
 			// Total: 0.003 + 0.0075 = 0.0105
-			expect(result.totalCost).toBe(0.0105)
-			expect(result.totalInputTokens).toBe(1000)
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0.0105)
 		})
 
 		it("should handle cache writes cost", () => {
@@ -143,9 +141,7 @@ describe("Cost Utility", () => {
 			// Output cost: (15.0 / 1_000_000) * 500 = 0.0075
 			// Cache writes: (3.75 / 1_000_000) * 2000 = 0.0075
 			// Total: 0.003 + 0.0075 + 0.0075 = 0.018
-			expect(result.totalCost).toBeCloseTo(0.018, 6)
-			expect(result.totalInputTokens).toBe(3000) // Total already includes cache
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBeCloseTo(0.018, 6)
 		})
 
 		it("should handle cache reads cost", () => {
@@ -155,9 +151,7 @@ describe("Cost Utility", () => {
 			// Output cost: (15.0 / 1_000_000) * 500 = 0.0075
 			// Cache reads: (0.3 / 1_000_000) * 3000 = 0.0009
 			// Total: 0.003 + 0.0075 + 0.0009 = 0.0114
-			expect(result.totalCost).toBe(0.0114)
-			expect(result.totalInputTokens).toBe(4000) // Total already includes cache
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0.0114)
 		})
 
 		it("should handle all cost components together", () => {
@@ -168,9 +162,7 @@ describe("Cost Utility", () => {
 			// Cache writes: (3.75 / 1_000_000) * 2000 = 0.0075
 			// Cache reads: (0.3 / 1_000_000) * 3000 = 0.0009
 			// Total: 0.003 + 0.0075 + 0.0075 + 0.0009 = 0.0189
-			expect(result.totalCost).toBe(0.0189)
-			expect(result.totalInputTokens).toBe(6000) // Total already includes cache
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0.0189)
 		})
 
 		it("should handle missing prices gracefully", () => {
@@ -181,16 +173,12 @@ describe("Cost Utility", () => {
 			}
 
 			const result = calculateApiCostOpenAI(modelWithoutPrices, 1000, 500, 2000, 3000)
-			expect(result.totalCost).toBe(0)
-			expect(result.totalInputTokens).toBe(1000) // Total already includes cache
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0)
 		})
 
 		it("should handle zero tokens", () => {
 			const result = calculateApiCostOpenAI(mockModelInfo, 0, 0, 0, 0)
-			expect(result.totalCost).toBe(0)
-			expect(result.totalInputTokens).toBe(0)
-			expect(result.totalOutputTokens).toBe(0)
+			expect(result).toBe(0)
 		})
 
 		it("should handle undefined cache values", () => {
@@ -199,9 +187,7 @@ describe("Cost Utility", () => {
 			// Input cost: (3.0 / 1_000_000) * 1000 = 0.003
 			// Output cost: (15.0 / 1_000_000) * 500 = 0.0075
 			// Total: 0.003 + 0.0075 = 0.0105
-			expect(result.totalCost).toBe(0.0105)
-			expect(result.totalInputTokens).toBe(1000)
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0.0105)
 		})
 
 		it("should handle missing cache prices", () => {
@@ -217,9 +203,7 @@ describe("Cost Utility", () => {
 			// Input cost: (3.0 / 1_000_000) * (6000 - 2000 - 3000) = 0.003
 			// Output cost: (15.0 / 1_000_000) * 500 = 0.0075
 			// Total: 0.003 + 0.0075 = 0.0105
-			expect(result.totalCost).toBe(0.0105)
-			expect(result.totalInputTokens).toBe(6000) // Total already includes cache
-			expect(result.totalOutputTokens).toBe(500)
+			expect(result).toBe(0.0105)
 		})
 	})
 })