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import type { ModelInfo, ProviderEvent } from "@dispatch/kernel";
import { describe, expect, it } from "vitest";
import {
collectTextFromStream,
findVisionModelName,
formatConsultationTitle,
formatConsultResult,
formatImagePlaceholder,
formatNoVisionPlaceholder,
isVisionCapable,
} from "./pure.js";
describe("isVisionCapable", () => {
it("returns true when ModelInfo.vision is true", () => {
expect(isVisionCapable("umans/umans-kimi-k2.7", { id: "umans-kimi-k2.7", vision: true })).toBe(
true,
);
});
it("returns false when ModelInfo.vision is false (overrides name heuristic)", () => {
expect(isVisionCapable("umans/umans-kimi-k2.7", { id: "umans-kimi-k2.7", vision: false })).toBe(
false,
);
});
it("falls back to name heuristic when vision is absent (umans kimi + qwen)", () => {
expect(isVisionCapable("umans/umans-kimi-k2.7", undefined)).toBe(true);
expect(isVisionCapable("umans/umans-qwen3.6-35b-a3b", undefined)).toBe(true);
});
it("falls back to name heuristic when vision is absent (non-vision)", () => {
expect(isVisionCapable("umans/umans-glm-5.2", undefined)).toBe(false);
expect(isVisionCapable("umans/umans-coder", { id: "umans-coder" })).toBe(false);
});
it("returns false for undefined model name", () => {
expect(isVisionCapable(undefined, undefined)).toBe(false);
});
});
describe("findVisionModelName", () => {
const getInfo = async (name: string): Promise<ModelInfo | undefined> => {
const map: Record<string, ModelInfo> = {
"umans/umans-kimi-k2.7": { id: "umans-kimi-k2.7", vision: true },
"umans/umans-qwen3.6-35b-a3b": { id: "umans-qwen3.6-35b-a3b", vision: true },
"umans/umans-glm-5.2": { id: "umans-glm-5.2" },
"umans/llama-vision": { id: "llama-vision", vision: true },
};
return map[name];
};
it("finds the first umans kimi model via name heuristic", async () => {
const name = await findVisionModelName(
["umans/umans-glm-5.2", "umans/umans-kimi-k2.7", "umans/llama-vision"],
getInfo,
);
expect(name).toBe("umans/umans-kimi-k2.7");
});
it("finds a vision model via ModelInfo.vision when name heuristic misses", async () => {
const name = await findVisionModelName(["umans/umans-glm-5.2", "umans/llama-vision"], getInfo);
expect(name).toBe("umans/llama-vision");
});
it("skips the excluded model and finds the next vision model", async () => {
const name = await findVisionModelName(
["umans/umans-kimi-k2.7", "umans/umans-qwen3.6-35b-a3b"],
getInfo,
"umans/umans-kimi-k2.7",
);
expect(name).toBe("umans/umans-qwen3.6-35b-a3b");
});
it("returns undefined when no vision model is available", async () => {
const name = await findVisionModelName(["umans/umans-glm-5.2"], getInfo);
expect(name).toBeUndefined();
});
it("returns undefined for empty catalog", async () => {
const name = await findVisionModelName([], getInfo);
expect(name).toBeUndefined();
});
});
describe("collectTextFromStream", () => {
async function* stream(events: ProviderEvent[]): AsyncIterable<ProviderEvent> {
for (const e of events) yield e;
}
it("collects text-delta events into a single string", async () => {
const events: ProviderEvent[] = [
{ type: "text-delta", delta: "Hello " },
{ type: "text-delta", delta: "world!" },
];
const text = await collectTextFromStream(stream(events));
expect(text).toBe("Hello world!");
});
it("ignores non-text events", async () => {
const events: ProviderEvent[] = [
{ type: "reasoning-delta", delta: "thinking..." },
{ type: "text-delta", delta: "answer" },
{ type: "usage", usage: { inputTokens: 5, outputTokens: 1 } },
{ type: "finish", reason: "stop" },
];
const text = await collectTextFromStream(stream(events));
expect(text).toBe("answer");
});
it("throws on an error event", async () => {
const events: ProviderEvent[] = [
{ type: "text-delta", delta: "partial" },
{ type: "error", message: "boom" },
];
await expect(collectTextFromStream(stream(events))).rejects.toThrow("boom");
});
it("returns empty string for an empty stream", async () => {
const text = await collectTextFromStream(stream([]));
expect(text).toBe("");
});
});
describe("formatImagePlaceholder", () => {
it("includes the image ID and mentions consult_vision", () => {
const text = formatImagePlaceholder(1);
expect(text).toContain("Image 1");
expect(text).toContain("consult_vision");
expect(text).toContain("imageIds=[1]");
});
it("increments the ID for each image", () => {
expect(formatImagePlaceholder(2)).toContain("Image 2");
expect(formatImagePlaceholder(2)).toContain("imageIds=[2]");
});
});
describe("formatNoVisionPlaceholder", () => {
it("explains the limitation", () => {
const text = formatNoVisionPlaceholder();
expect(text).toContain("no vision-capable model");
});
});
describe("formatConsultResult", () => {
it("includes the conversation ID, the response, and the dispatch CLI hint", () => {
const result = formatConsultResult("abc-123", "The error is on line 12.");
expect(result).toContain("abc-123");
expect(result).toContain("The error is on line 12.");
expect(result).toContain("dispatch CLI");
});
it("trims the response", () => {
const result = formatConsultResult("c1", " spaced ");
expect(result).toContain("spaced");
expect(result).not.toContain("spaced ");
});
});
describe("formatConsultationTitle", () => {
it("prefixes the question with 'IMAGE - '", () => {
expect(formatConsultationTitle("What error is shown?")).toBe("IMAGE - What error is shown?");
});
it("truncates long questions to 80 chars with an ellipsis (matching the store's TITLE_MAX)", () => {
const long = "x".repeat(100);
const title = formatConsultationTitle(long);
expect(title).toBe(`IMAGE - ${"x".repeat(80)}…`);
expect(title.length).toBe("IMAGE - ".length + 80 + 1); // prefix + 80 + ellipsis
});
it("does not truncate questions at or under 80 chars", () => {
expect(formatConsultationTitle("x".repeat(80))).toBe(`IMAGE - ${"x".repeat(80)}`);
expect(formatConsultationTitle("x".repeat(79))).toBe(`IMAGE - ${"x".repeat(79)}`);
});
it("handles an empty question", () => {
expect(formatConsultationTitle("")).toBe("IMAGE - ");
});
});
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