wehub-resource-sync
49 lines
2.3 KiB
TypeScript
49 lines
2.3 KiB
TypeScript
import { test } from "node:test";
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import assert from "node:assert/strict";
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import {
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smartFilterText,
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clampMcpAccessibilityConfig,
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} from "../../../open-sse/services/compression/engines/mcpAccessibility/index.ts";
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import { DEFAULT_MCP_ACCESSIBILITY_CONFIG } from "../../../open-sse/services/compression/engines/mcpAccessibility/constants.ts";
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// smartFilterText reserves 300 chars for the truncation tail/notice, so any maxTextChars below
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// that leaves headSize <= 0 and the whole tool result is replaced by the notice (total data
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// loss). The DB normalizer floored maxTextChars only at > 0, and the production read path in
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// server.ts bypassed bounding entirely. clampMcpAccessibilityConfig is the shared guard.
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test("clamps maxTextChars below the tail reserve to the default", () => {
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for (const bad of [1, 50, 300, 599]) {
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assert.equal(
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clampMcpAccessibilityConfig({ maxTextChars: bad }).maxTextChars,
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DEFAULT_MCP_ACCESSIBILITY_CONFIG.maxTextChars,
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`maxTextChars=${bad} must fall back to default`
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);
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}
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});
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test("keeps a sane maxTextChars (>= 600)", () => {
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assert.equal(clampMcpAccessibilityConfig({ maxTextChars: 600 }).maxTextChars, 600);
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assert.equal(clampMcpAccessibilityConfig({ maxTextChars: 1000 }).maxTextChars, 1000);
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assert.equal(clampMcpAccessibilityConfig({ maxTextChars: 1234.9 }).maxTextChars, 1234);
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});
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test("bounds the other numeric fields and honors enabled", () => {
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const c = clampMcpAccessibilityConfig({
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collapseThreshold: -5,
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minLengthToProcess: 0,
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collapseKeepHead: -1,
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enabled: false,
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});
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assert.equal(c.collapseThreshold, DEFAULT_MCP_ACCESSIBILITY_CONFIG.collapseThreshold);
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assert.equal(c.minLengthToProcess, DEFAULT_MCP_ACCESSIBILITY_CONFIG.minLengthToProcess);
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assert.equal(c.collapseKeepHead, DEFAULT_MCP_ACCESSIBILITY_CONFIG.collapseKeepHead);
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assert.equal(c.enabled, false);
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});
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test("a clamped config never lets smartFilterText truncate the whole text away", () => {
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// The previously-dangerous stored value: maxTextChars=50 → clamps to default, so a
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// 1000-char tool result is NOT replaced wholesale by the truncation notice.
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const cfg = clampMcpAccessibilityConfig({ maxTextChars: 50, minLengthToProcess: 1 });
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const out = smartFilterText("A".repeat(1000), cfg);
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assert.ok(out.includes("A".repeat(500)), "content preserved (not nuked by a tiny maxTextChars)");
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});
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