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test(core): cover multi-line patch summaries

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Kit Langton
2026-07-20 15:37:32 -04:00
parent a9bc065996
commit cf7f182091
1 changed files with 19 additions and 2 deletions
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packages/core/test/tool-patch.test.ts
+19 -2
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@@ -1,8 +1,8 @@
import fs from "fs/promises"
import path from "path"
import { describe, expect } from "bun:test"
import { describe, expect, test } from "bun:test"
import { Deferred, Effect, Exit, Fiber, Layer, Schema } from "effect"
import { parsePatch } from "diff"
import { createTwoFilesPatch, parsePatch } from "diff"
import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
import { LayerNode } from "@opencode-ai/core/effect/layer-node"
import { FileMutation } from "@opencode-ai/core/file-mutation"
@@ -15,6 +15,7 @@ import { SessionV2 } from "@opencode-ai/core/session"
import { ToolRegistry } from "@opencode-ai/core/tool/registry"
import { ToolOutputStore } from "@opencode-ai/core/tool-output-store"
import { PatchTool } from "@opencode-ai/core/tool/patch"
import { ToolStructured } from "@opencode-ai/core/tool/structured"
import { location } from "./fixture/location"
import { tmpdir } from "./fixture/tmpdir"
import { makeLocationNode } from "@opencode-ai/core/effect/app-node"
@@ -146,6 +147,22 @@ const exists = (target: string) =>
const it = testEffect(Layer.empty)
describe("PatchTool", () => {
test("summarizes multi-line truncation without fabricating unchanged context", () => {
const before = Array.from({ length: 100 }, (_, index) => `old-${index}`).join("\n")
const after = Array.from({ length: 100 }, (_, index) => `new-${index}`).join("\n")
const summary = ToolStructured.patch(createTwoFilesPatch("large.txt", "large.txt", before, after), 500)
const hunk = parsePatch(summary)[0]?.hunks[0]
expect(hunk?.lines.some((line) => line.startsWith(" "))).toBe(false)
expect(hunk?.lines).toEqual([
"-old-0",
"+new-0",
"-... 99 removed lines omitted ...",
"+... 99 added lines omitted ...",
])
expect(hunk).toMatchObject({ oldLines: 2, newLines: 2 })
})
it.live("registers and sequentially applies add, update, and delete hunks", () =>
Effect.acquireUseRelease(
Effect.promise(() => tmpdir()),