52 lines
1.4 KiB
TypeScript
52 lines
1.4 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import { computeSseSummary, extractSseValueAtPath } from "./summary";
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describe("extractSseValueAtPath", () => {
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it("supports simple paths", () => {
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expect(
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extractSseValueAtPath(
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JSON.stringify({ choices: [{ delta: { content: "hello" } }] }),
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"$.choices[0].delta.content",
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),
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).toBe("hello");
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});
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it("supports full JSONPath expressions", () => {
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expect(
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extractSseValueAtPath(
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JSON.stringify({
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choices: [
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{ delta: { role: "assistant" } },
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{ delta: { content: "hello" } },
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{ delta: { content: " world" } },
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],
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}),
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"$.choices[*].delta.content",
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),
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).toBe("hello world");
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});
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it("returns null when a JSONPath expression has no matches", () => {
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expect(extractSseValueAtPath(JSON.stringify({ delta: {} }), "$.delta.text")).toBeNull();
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});
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});
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describe("computeSseSummary", () => {
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it("concatenates JSONPath matches across SSE messages", () => {
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expect(
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computeSseSummary(
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[
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`data: ${JSON.stringify({ choices: [{ delta: { content: "hello" } }] })}`,
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"",
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`data: ${JSON.stringify({ choices: [{ delta: { content: " world" } }] })}`,
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"",
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].join("\n"),
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"$.choices[*].delta.content",
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),
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).toEqual({
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fragmentCount: 2,
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summary: "hello world",
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});
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});
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});
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