wehub-resource-sync
47 lines
2.3 KiB
TypeScript
47 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 { appendToolCallArgumentDelta } from "../../open-sse/utils/toolCallArguments.ts";
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/**
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* Helper: reduce a list of incremental delta fragments the way the streaming
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* accumulators do (sseParser / responsesTransformer / translators).
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*/
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function accumulate(fragments: string[]): string {
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return fragments.reduce<string>((acc, frag) => appendToolCallArgumentDelta(acc, frag), "");
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}
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test("appendToolCallArgumentDelta concatenates incremental fragments verbatim", () => {
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assert.equal(accumulate(['{"q":"hel', 'lo"}']), '{"q":"hello"}');
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});
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test("appendToolCallArgumentDelta preserves repeated characters across fragment boundaries (#3701 anti-truncation)", () => {
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// The previous fuzzy-dedup heuristic dropped a byte here, turning the buffer's
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// trailing "x" + the next "x" into a single "x". Repeated chars must survive.
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assert.equal(accumulate(['{"a":"', "x", "x", '"}']), '{"a":"xx"}');
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// A shell command with a doubled letter must not be silently truncated
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// (`ls -ll` → `ls -l` was the real-world corruption).
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assert.equal(accumulate(['{"cmd":"l', 'l -l"}']), '{"cmd":"ll -l"}');
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// A doubled letter that straddles a single-char fragment boundary survives.
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assert.equal(accumulate(['{"path":"/a/bb', 'b/c"}']), '{"path":"/a/bbb/c"}');
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});
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test("appendToolCallArgumentDelta dedups an identical full-snapshot repeat", () => {
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const args = JSON.stringify({ command: "find /tmp -name test.txt" });
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assert.equal(appendToolCallArgumentDelta(args, args), args);
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});
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test("appendToolCallArgumentDelta replaces a growing full snapshot instead of concatenating", () => {
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assert.equal(appendToolCallArgumentDelta('{"a"', '{"a":1}'), '{"a":1}');
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assert.equal(appendToolCallArgumentDelta('{"command":"ec', '{"command":"echo hi"}'), '{"command":"echo hi"}');
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});
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test("appendToolCallArgumentDelta handles empty / non-string inputs", () => {
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assert.equal(appendToolCallArgumentDelta("", "x"), "x");
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assert.equal(appendToolCallArgumentDelta("x", ""), "x");
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assert.equal(appendToolCallArgumentDelta(undefined, "x"), "x");
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assert.equal(appendToolCallArgumentDelta("x", undefined), "x");
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assert.equal(appendToolCallArgumentDelta(null, null), "");
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assert.equal(appendToolCallArgumentDelta(42, "x"), "x");
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});
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