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I'm going to build my own OpenClaw, with blackjack... and bun!
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TypeScript
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253/** * test/utils/preview-utils.test.ts – Tests for text preview utilities. * * Verifies buildPreviewLines(), countSoftLines(), splitLines(), and * line truncation behaviour used for agent draft/thought previews. */
import { describe, test, expect } from "bun:test";import "../helpers.js";
import { splitLines, buildPreviewLines, truncateLine, countSoftLines, countSoftLine,} from "../../src/utils/preview.js";
describe("preview utils", () => { test("splitLines normalizes and splits", () => { expect(splitLines("")).toEqual([]); expect(splitLines("one\ntwo")).toEqual(["one", "two"]); expect(splitLines("one\r\ntwo\rthree")).toEqual(["one", "two", "three"]); expect(splitLines("one\n")).toEqual(["one", ""]); });
test("truncateLine respects max length", () => { expect(truncateLine("short", 10)).toBe("short"); expect(truncateLine("longer", 3)).toBe("lon…"); expect(truncateLine("same", 0)).toBe("same"); });
test("buildPreviewLines returns preview and omitted count", () => { const { preview, omittedLines } = buildPreviewLines("a\nb\nc", { maxLines: 2, includeOmittedLine: true, }); expect(preview).toBe("a\nb\n… (1 more lines)"); expect(omittedLines).toBe(1); });
test("buildPreviewLines truncates long lines", () => { const { preview } = buildPreviewLines("abcdef", { maxLines: 1, maxLineLength: 3 }); expect(preview).toBe("abc…"); });
test("countSoftLine and countSoftLines", () => { expect(countSoftLine("", 5)).toBe(1); expect(countSoftLine("12345", 2)).toBe(3); expect(countSoftLines(["12345", ""], 2)).toBe(4); });});