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| 1 | +// npx jest src/api/transform/caching/__tests__/anthropic.test.ts |
| 2 | + |
| 3 | +import OpenAI from "openai" |
| 4 | + |
| 5 | +import { addCacheBreakpoints } from "../anthropic" |
| 6 | + |
| 7 | +describe("addCacheBreakpoints (Anthropic)", () => { |
| 8 | + const systemPrompt = "You are a helpful assistant." |
| 9 | + |
| 10 | + it("should always add a cache breakpoint to the system prompt", () => { |
| 11 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 12 | + { role: "system", content: systemPrompt }, |
| 13 | + { role: "user", content: "Hello" }, |
| 14 | + ] |
| 15 | + |
| 16 | + addCacheBreakpoints(systemPrompt, messages) |
| 17 | + |
| 18 | + expect(messages[0].content).toEqual([ |
| 19 | + { type: "text", text: systemPrompt, cache_control: { type: "ephemeral" } }, |
| 20 | + ]) |
| 21 | + }) |
| 22 | + |
| 23 | + it("should not add breakpoints to user messages if there are none", () => { |
| 24 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [{ role: "system", content: systemPrompt }] |
| 25 | + const originalMessages = JSON.parse(JSON.stringify(messages)) |
| 26 | + |
| 27 | + addCacheBreakpoints(systemPrompt, messages) |
| 28 | + |
| 29 | + expect(messages[0].content).toEqual([ |
| 30 | + { type: "text", text: systemPrompt, cache_control: { type: "ephemeral" } }, |
| 31 | + ]) |
| 32 | + |
| 33 | + expect(messages.length).toBe(originalMessages.length) |
| 34 | + }) |
| 35 | + |
| 36 | + it("should add a breakpoint to the only user message if only one exists", () => { |
| 37 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 38 | + { role: "system", content: systemPrompt }, |
| 39 | + { role: "user", content: "User message 1" }, |
| 40 | + ] |
| 41 | + |
| 42 | + addCacheBreakpoints(systemPrompt, messages) |
| 43 | + |
| 44 | + expect(messages[1].content).toEqual([ |
| 45 | + { type: "text", text: "User message 1", cache_control: { type: "ephemeral" } }, |
| 46 | + ]) |
| 47 | + }) |
| 48 | + |
| 49 | + it("should add breakpoints to both user messages if only two exist", () => { |
| 50 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 51 | + { role: "system", content: systemPrompt }, |
| 52 | + { role: "user", content: "User message 1" }, |
| 53 | + { role: "user", content: "User message 2" }, |
| 54 | + ] |
| 55 | + |
| 56 | + addCacheBreakpoints(systemPrompt, messages) |
| 57 | + |
| 58 | + expect(messages[1].content).toEqual([ |
| 59 | + { type: "text", text: "User message 1", cache_control: { type: "ephemeral" } }, |
| 60 | + ]) |
| 61 | + |
| 62 | + expect(messages[2].content).toEqual([ |
| 63 | + { type: "text", text: "User message 2", cache_control: { type: "ephemeral" } }, |
| 64 | + ]) |
| 65 | + }) |
| 66 | + |
| 67 | + it("should add breakpoints to the last two user messages when more than two exist", () => { |
| 68 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 69 | + { role: "system", content: systemPrompt }, |
| 70 | + { role: "user", content: "User message 1" }, // Should not get breakpoint. |
| 71 | + { role: "user", content: "User message 2" }, // Should get breakpoint. |
| 72 | + { role: "user", content: "User message 3" }, // Should get breakpoint. |
| 73 | + ] |
| 74 | + addCacheBreakpoints(systemPrompt, messages) |
| 75 | + |
| 76 | + expect(messages[1].content).toEqual([{ type: "text", text: "User message 1" }]) |
| 77 | + |
| 78 | + expect(messages[2].content).toEqual([ |
| 79 | + { type: "text", text: "User message 2", cache_control: { type: "ephemeral" } }, |
| 80 | + ]) |
| 81 | + |
| 82 | + expect(messages[3].content).toEqual([ |
| 83 | + { type: "text", text: "User message 3", cache_control: { type: "ephemeral" } }, |
| 84 | + ]) |
| 85 | + }) |
| 86 | + |
| 87 | + it("should handle assistant messages correctly when finding last two user messages", () => { |
| 88 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 89 | + { role: "system", content: systemPrompt }, |
| 90 | + { role: "user", content: "User message 1" }, // Should not get breakpoint. |
| 91 | + { role: "assistant", content: "Assistant response 1" }, |
| 92 | + { role: "user", content: "User message 2" }, // Should get breakpoint (second to last user). |
| 93 | + { role: "assistant", content: "Assistant response 2" }, |
| 94 | + { role: "user", content: "User message 3" }, // Should get breakpoint (last user). |
| 95 | + { role: "assistant", content: "Assistant response 3" }, |
| 96 | + ] |
| 97 | + addCacheBreakpoints(systemPrompt, messages) |
| 98 | + |
| 99 | + const userMessages = messages.filter((m) => m.role === "user") |
| 100 | + |
| 101 | + expect(userMessages[0].content).toEqual([{ type: "text", text: "User message 1" }]) |
| 102 | + |
| 103 | + expect(userMessages[1].content).toEqual([ |
| 104 | + { type: "text", text: "User message 2", cache_control: { type: "ephemeral" } }, |
| 105 | + ]) |
| 106 | + |
| 107 | + expect(userMessages[2].content).toEqual([ |
| 108 | + { type: "text", text: "User message 3", cache_control: { type: "ephemeral" } }, |
| 109 | + ]) |
| 110 | + }) |
| 111 | + |
| 112 | + it("should add breakpoint to the last text part if content is an array", () => { |
| 113 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 114 | + { role: "system", content: systemPrompt }, |
| 115 | + { role: "user", content: "User message 1" }, |
| 116 | + { |
| 117 | + role: "user", |
| 118 | + content: [ |
| 119 | + { type: "text", text: "This is the last user message." }, |
| 120 | + { type: "image_url", image_url: { url: "data:image/png;base64,..." } }, |
| 121 | + { type: "text", text: "This part should get the breakpoint." }, |
| 122 | + ], |
| 123 | + }, |
| 124 | + ] |
| 125 | + |
| 126 | + addCacheBreakpoints(systemPrompt, messages) |
| 127 | + |
| 128 | + expect(messages[1].content).toEqual([ |
| 129 | + { type: "text", text: "User message 1", cache_control: { type: "ephemeral" } }, |
| 130 | + ]) |
| 131 | + |
| 132 | + expect(messages[2].content).toEqual([ |
| 133 | + { type: "text", text: "This is the last user message." }, |
| 134 | + { type: "image_url", image_url: { url: "data:image/png;base64,..." } }, |
| 135 | + { type: "text", text: "This part should get the breakpoint.", cache_control: { type: "ephemeral" } }, |
| 136 | + ]) |
| 137 | + }) |
| 138 | + |
| 139 | + it("should add a placeholder text part if the target message has no text parts", () => { |
| 140 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 141 | + { role: "system", content: systemPrompt }, |
| 142 | + { role: "user", content: "User message 1" }, |
| 143 | + { |
| 144 | + role: "user", |
| 145 | + content: [{ type: "image_url", image_url: { url: "data:image/png;base64,..." } }], |
| 146 | + }, |
| 147 | + ] |
| 148 | + |
| 149 | + addCacheBreakpoints(systemPrompt, messages) |
| 150 | + |
| 151 | + expect(messages[1].content).toEqual([ |
| 152 | + { type: "text", text: "User message 1", cache_control: { type: "ephemeral" } }, |
| 153 | + ]) |
| 154 | + |
| 155 | + expect(messages[2].content).toEqual([ |
| 156 | + { type: "image_url", image_url: { url: "data:image/png;base64,..." } }, |
| 157 | + { type: "text", text: "...", cache_control: { type: "ephemeral" } }, // Placeholder added. |
| 158 | + ]) |
| 159 | + }) |
| 160 | + |
| 161 | + it("should ensure content is array format even if no breakpoint added", () => { |
| 162 | + const messages: OpenAI.Chat.ChatCompletionMessageParam[] = [ |
| 163 | + { role: "system", content: systemPrompt }, |
| 164 | + { role: "user", content: "User message 1" }, // String content, no breakpoint. |
| 165 | + { role: "user", content: "User message 2" }, // Gets breakpoint. |
| 166 | + { role: "user", content: "User message 3" }, // Gets breakpoint. |
| 167 | + ] |
| 168 | + |
| 169 | + addCacheBreakpoints(systemPrompt, messages) |
| 170 | + |
| 171 | + expect(messages[1].content).toEqual([{ type: "text", text: "User message 1" }]) |
| 172 | + |
| 173 | + expect(messages[2].content).toEqual([ |
| 174 | + { type: "text", text: "User message 2", cache_control: { type: "ephemeral" } }, |
| 175 | + ]) |
| 176 | + |
| 177 | + expect(messages[3].content).toEqual([ |
| 178 | + { type: "text", text: "User message 3", cache_control: { type: "ephemeral" } }, |
| 179 | + ]) |
| 180 | + }) |
| 181 | +}) |
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