Files
oh-my-pi/packages/coding-agent/test/modes/context-usage.test.ts
T
can1357 a050474af7 feat: migrated validation schemas and tool definitions from Zod to ArkType
- Migrated all wire protocol, schema definitions, and tools validation from Zod to ArkType across multiple packages.
- Updated extension runtimes, custom tools loader, and TypeBox compatibility shim to expose and use ArkType instances.
- Added a comprehensive ArkType migration guide, validation parity tests, and helper utilities.
- Removed redundant PDF asset routing and parsing implementations from the read tool.
2026-06-18 00:59:53 +02:00

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/**
* Contract: tool schema token estimation reflects the wire JSON Schema.
*
* Tools authored with arktype must be counted by the JSON Schema providers
* actually receive — not by stringifying the arktype instance's enumerable
* internals, which massively overcounts.
*/
import { describe, expect, it } from "bun:test";
import { arkToWireSchema } from "@oh-my-pi/pi-ai/utils/schema";
import {
type ContextBreakdown,
estimateToolSchemaTokens,
renderContextUsage,
} from "@oh-my-pi/pi-coding-agent/modes/utils/context-usage";
import { type } from "arktype";
describe("estimateToolSchemaTokens", () => {
it("counts arktype tool schemas by their wire JSON Schema, not arktype internals", () => {
const parameters = type({
"query /** search query */": "string",
"limit?": "number",
});
const arktypeEstimate = estimateToolSchemaTokens([
{ name: "web_search", description: "Searches the web.", parameters } as never,
]);
const wireEstimate = estimateToolSchemaTokens([
{ name: "web_search", description: "Searches the web.", parameters: arkToWireSchema(parameters) } as never,
]);
expect(arktypeEstimate).toBe(wireEstimate);
});
});
/**
* Contract: the /context panel surfaces estimated snapcompact wire savings —
* applied swaps show "saves" figures, inactive states say why.
*/
describe("renderContextUsage snapcompact section", () => {
const themeStub = {
fg: (_color: string, text: string) => text,
bold: (text: string) => text,
} as never;
function breakdownWith(snapcompact: ContextBreakdown["snapcompact"]): ContextBreakdown {
return {
model: { id: "test-model", name: "Test Model", contextWindow: 200000 } as never,
contextWindow: 200000,
categories: [],
usedTokens: 27929,
autoCompactBufferTokens: 0,
freeTokens: 172071,
snapcompact,
};
}
it("renders savings, skip reasons, and the wire total", () => {
const output = renderContextUsage(
breakdownWith({
visionCapable: true,
systemPrompt: {
applied: true,
scope: "all",
textTokens: 9768,
frames: 2,
imageTokens: 6600,
savedTokens: 3168,
},
toolResults: { total: 3, swapped: 0, textTokens: 0, frames: 0, imageTokens: 0, savedTokens: 0 },
savedTokens: 3168,
}),
themeStub,
);
expect(output).toContain("Snapcompact (estimated wire savings)");
expect(output).toContain("System prompt (all): saves ~3.2K (9.8K text → 2 frames ≈ 6.6K)");
expect(output).toContain("Tool results: none imaged (3 in history)");
// 27929 logical − 3168 saved ≈ 25K on the wire.
expect(output).toContain("Next request: ~25K tokens on the wire");
});
it("reports text-only models as inactive", () => {
const output = renderContextUsage(breakdownWith({ visionCapable: false, savedTokens: 0 }), themeStub);
expect(output).toContain("Snapcompact: inactive (model has no image input)");
});
it("omits the section entirely when no snapcompact setting is on", () => {
const output = renderContextUsage(breakdownWith(undefined), themeStub);
expect(output).not.toContain("Snapcompact");
});
});