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fs from "fs/promises"import path from "path"import { describe, expect } from "bun:test"import { Effect, Exit, Layer, Schema } from "effect"import { AppNodeBuilder } from "@opencode/core/effect/app-node-builder"import { LayerNode } from "@opencode/util/effect/layer-node"import { Environment } from "@opencode/core/environment/index"import { Formatter } from "@opencode/core/formatter"import { FileMutation } from "@opencode/core/file-mutation"import { Location } from "@opencode/core/location"import { FileAccess } from "@opencode/core/file-access"import { Model } from "@opencode/core/model"import { Permission } from "@opencode/core/permission"import { Provider } from "@opencode/core/provider"import { AbsolutePath } from "@opencode/core/schema"import { Session } from "@opencode/core/session"import { Tool } from "@opencode/core/tool"import { PatchTool } from "@opencode/core/tool/plugin/patch"import type { SessionHooks } from "@opencode/plugin/effect/session"import { transformEnvironmentFiles } from "./fixture/environment"import { location } from "./fixture/location"import { tmpdir } from "./fixture/tmpdir"import { makeLocationNode } from "@opencode/util/effect/app-node"import { testEffect } from "./lib/effect"import { permissionLayer } from "./lib/permission"import { toolIdentity, executeTool, registerToolPlugin, toolDefinitions } from "./lib/tool"
const sessionHooks = new Map<string, (event: SessionHooks["context"]) => Effect.Effect<void>>()const patchToolNode = makeLocationNode({ name: "test/patch-tool-plugin", layer: Layer.effectDiscard( registerToolPlugin(PatchTool.Plugin, { session: { hook: (name, callback) => Effect.sync(() => { sessionHooks.set(name, callback as (event: SessionHooks["context"]) => Effect.Effect<void>) return { dispose: Effect.void } }), }, }), ), deps: [ Tool.node, FileAccess.node, FileMutation.node, Environment.node, Formatter.node, Location.node, Permission.node, ],})
const sessionID = Session.ID.make("ses_patch_tool_test")const assertions: Permission.AssertInput[] = []let denyAction: string | undefinedlet failRemoveTarget: string | undefinedlet failRemoveErrorTarget: string | undefinedlet failWriteTarget: string | undefinedlet readsBeforeEditApproval = 0let editApproved = falselet afterEditApproval = (): Effect.Effect<void> => Effect.voidlet formatFile = (_target: string): Effect.Effect<boolean> => Effect.succeed(false)
const permission = permissionLayer({ assert: (input) => Effect.sync(() => { assertions.push(input) if (input.action === "edit") editApproved = true }).pipe( Effect.andThen(input.action === "edit" ? Effect.suspend(afterEditApproval) : Effect.void), Effect.andThen( input.action === denyAction ? Effect.fail( new Permission.BlockedError({ rules: [], permission: input.action, resources: input.resources, }), ) : Effect.void, ), ),})
const formatter = Layer.mock(Formatter.Service, { file: (target) => formatFile(target),})
const reset = () => { assertions.length = 0 denyAction = undefined failRemoveTarget = undefined failRemoveErrorTarget = undefined failWriteTarget = undefined readsBeforeEditApproval = 0 editApproved = false afterEditApproval = () => Effect.void formatFile = () => Effect.succeed(false)}
const withTool = <A, E, R>( directory: string, body: (registry: Tool.Interface) => Effect.Effect<A, E, R>, projectDirectory = directory,) => { const activeLocation = Layer.succeed( Location.Service, Location.Service.of( location({ directory: AbsolutePath.make(directory) }, { projectDirectory: AbsolutePath.make(projectDirectory) }), ), ) return Effect.gen(function* () { return yield* body(yield* Tool.Service) }).pipe( Effect.provide( AppNodeBuilder.build(LayerNode.group([Tool.node, FileAccess.node, FileMutation.node, patchToolNode]), [ Environment.node.replace( transformEnvironmentFiles((files) => ({ read: (target, range) => Effect.sync(() => { if (!editApproved) readsBeforeEditApproval++ }).pipe(Effect.andThen(files.read(target, range))), remove: (target) => { if (failRemoveTarget && path.basename(target) === failRemoveTarget) return Effect.die("forced remove failure") if (failRemoveErrorTarget && path.basename(target) === failRemoveErrorTarget) return Effect.fail(new Environment.Failed({ path: target, cause: new Error("forced remove failure") })) return files.remove(target) }, write: (target, content) => { if (failWriteTarget && path.basename(target) === failWriteTarget) return Effect.fail(new Environment.Failed({ path: target, cause: new Error("forced write failure") })) return files.write(target, content) }, })), ), Location.node.replace(activeLocation), Formatter.node.replace(formatter), Permission.node.replace(permission), ]), ), )}
const call = (patchText: string, id = "call-patch") => ({ sessionID, ...toolIdentity, call: { type: "tool-call" as const, id, name: "patch", input: { patchText } },})
const exists = (target: string) => Effect.promise(() => fs.stat(target).then( () => true, () => false, ), )const it = testEffect(Layer.empty)const withTempTool = <A, E, R>(body: (directory: string, registry: Tool.Interface) => Effect.Effect<A, E, R>) => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() return withTool(tmp.path, (registry) => body(tmp.path, registry)) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), )
describe("PatchTool", () => { it.live("selects the same edit tools for compaction and generate requests as the agent loop", () => withTempTool(() => Effect.gen(function* () { const event = (id: string): SessionHooks["context"] => ({ sessionID, agent: toolIdentity.agent, model: Model.Ref.make({ providerID: Provider.ID.make("test"), id: Model.ID.make(id) }), system: [], messages: [], tools: Object.fromEntries( ["patch", "edit", "write", "read"].map((name) => [name, { description: name, input: { type: "object" } }]), ), options: {}, }) for (const name of ["context", "compaction", "generate"]) { const hook = sessionHooks.get(name) expect(hook).toBeDefined() const claude = event("claude-sonnet-4") yield* hook!(claude) expect(Object.keys(claude.tools)).toEqual(["edit", "write", "read"]) const gpt = event("gpt-5") yield* hook!(gpt) expect(Object.keys(gpt.tools)).toEqual(["patch", "read"]) } }), ), )
it.live("registers and sequentially applies add, update, and delete hunks", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const update = path.join(tmp.path, "update.txt") const remove = path.join(tmp.path, "remove.txt") return Effect.promise(() => Promise.all([fs.writeFile(update, "before\n"), fs.writeFile(remove, "remove\n")]), ).pipe( Effect.andThen( withTool(tmp.path, (registry) => Effect.gen(function* () { expect((yield* toolDefinitions(registry)).map((tool) => tool.name)).toEqual(["patch", "execute"]) const settled = yield* executeTool( registry, call( "*** Begin Patch\n*** Add File: nested/new.txt\n+created\n*** Update File: update.txt\n@@\n-before\n+after\n*** Delete File: remove.txt\n*** End Patch", ), ) expect(settled.status).toBe("completed") if (settled.status !== "completed") return expect(settled.content).toEqual([ { type: "text", text: "Success. Updated the following files:\nA nested/new.txt\nM update.txt\nD remove.txt", }, ]) const modelText = settled.content?.[0]?.type === "text" ? settled.content[0].text : "" if (process.platform === "win32") expect(modelText).not.toContain("\\") expect(settled.output).toMatchObject({ applied: [ { type: "add", resource: "nested/new.txt" }, { type: "update", resource: "update.txt" }, { type: "delete", resource: "remove.txt" }, ], files: [ { file: "nested/new.txt", status: "added", additions: 1, deletions: 0, patch: expect.stringContaining("+created"), }, { file: "update.txt", status: "modified", additions: 1, deletions: 1, patch: expect.stringContaining("-before\n+after"), }, { file: "remove.txt", status: "deleted", additions: 0, deletions: 1, patch: expect.stringContaining("-remove"), }, ], }) expect(assertions).toMatchObject([ { sessionID, action: "edit", resources: ["nested/new.txt", "update.txt", "remove.txt"], save: ["*"], metadata: { filepath: "nested/new.txt, update.txt, remove.txt", diff: expect.stringContaining("Index:"), files: expect.any(Array), }, }, ]) expect(readsBeforeEditApproval).toBe(2) expect(yield* Effect.promise(() => fs.readFile(path.join(tmp.path, "nested/new.txt"), "utf8"))).toBe( "created\n", ) expect(yield* Effect.promise(() => fs.readFile(update, "utf8"))).toBe("after\n") expect(yield* exists(remove)).toBe(false) }), ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("replaces a file with a directory containing an added file", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => fs.writeFile(path.join(directory, "parent"), "before\n")) const settled = yield* executeTool( registry, call("*** Begin Patch\n*** Delete File: parent\n*** Add File: parent/child.txt\n+after\n*** End Patch"), ) expect(settled.status).toBe("completed") expect(yield* Effect.promise(() => fs.readFile(path.join(directory, "parent/child.txt"), "utf8"))).toBe( "after\n", ) }), ), )
it.live("counts deleted lines with and without a trailing newline", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => Promise.all([ fs.writeFile(path.join(directory, "trailing.txt"), "remove\n"), fs.writeFile(path.join(directory, "unterminated.txt"), "remove"), ]), ) const settled = yield* executeTool( registry, call("*** Begin Patch\n*** Delete File: trailing.txt\n*** Delete File: unterminated.txt\n*** End Patch"), ) expect(settled.status).toBe("completed") if (settled.status !== "completed") return expect(settled.output.files).toMatchObject([ { file: "trailing.txt", additions: 0, deletions: 1 }, { file: "unterminated.txt", additions: 0, deletions: 1 }, ]) }), ), )
it.live("serializes concurrent patch transactions", () => withTempTool((directory, registry) => { const target = path.join(directory, "concurrent.txt") afterEditApproval = () => assertions.filter((input) => input.action === "edit").length === 1 ? Effect.sleep("50 millis") : Effect.void return Effect.promise(() => fs.writeFile(target, "one\ntwo\n")).pipe( Effect.andThen( Effect.all( [ executeTool( registry, call( "*** Begin Patch\n*** Update File: concurrent.txt\n@@\n-one\n+ONE\n*** End Patch", "call-patch-one", ), ), executeTool( registry, call( "*** Begin Patch\n*** Update File: concurrent.txt\n@@\n-two\n+TWO\n*** End Patch", "call-patch-two", ), ), ], { concurrency: "unbounded" }, ), ), Effect.andThen((results) => Effect.gen(function* () { expect(results.map((result) => result.status)).toEqual(["completed", "completed"]) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("ONE\nTWO\n") }), ), ) }), )
it.live("returns file diffs for final formatted content", () => withTempTool((directory, registry) => { const target = path.join(directory, "formatted.txt") formatFile = (file) => Effect.promise(async () => { await fs.writeFile(file, (await fs.readFile(file, "utf8")).replace("created", "FORMATTED")) return true }) return Effect.gen(function* () { const settled = yield* executeTool( registry, call("*** Begin Patch\n*** Add File: formatted.txt\n+created\n*** End Patch"), ) expect(settled.status).toBe("completed") if (settled.status !== "completed") return expect(settled.output.files[0]?.patch).toContain("+FORMATTED") expect(settled.metadata?.files?.[0]?.patch).toContain("+FORMATTED") expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("FORMATTED\n") }) }), )
it.live("moves and updates a file", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const source = path.join(tmp.path, "old.txt") return Effect.promise(() => fs.writeFile(source, "before\n")).pipe( Effect.andThen( withTool(tmp.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call( "*** Begin Patch\n*** Add File: created.txt\n+created\n*** Update File: old.txt\n*** Move to: moved.txt\n@@\n-before\n+after\n*** End Patch", ), ), ).toMatchObject({ status: "completed", content: [ { type: "text", text: "Success. Updated the following files:\nA created.txt\nM moved.txt" }, ], }) expect(yield* exists(source)).toBe(false) expect(yield* Effect.promise(() => fs.readFile(path.join(tmp.path, "moved.txt"), "utf8"))).toBe( "after\n", ) expect(yield* Effect.promise(() => fs.readFile(path.join(tmp.path, "created.txt"), "utf8"))).toBe( "created\n", ) }), ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("moves a file over an existing destination", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const source = path.join(tmp.path, "old.txt") const destination = path.join(tmp.path, "nested", "moved.txt") return Effect.promise(() => Promise.all([ fs.writeFile(source, "before\n"), fs .mkdir(path.dirname(destination), { recursive: true }) .then(() => fs.writeFile(destination, "existing\n")), ]), ).pipe( Effect.andThen( withTool(tmp.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: old.txt\n*** Move to: nested/moved.txt\n@@\n-before\n+after\n*** End Patch", ), ), ).toMatchObject({ status: "completed" }) expect(yield* exists(source)).toBe(false) expect(yield* Effect.promise(() => fs.readFile(destination, "utf8"))).toBe("after\n") }), ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("moves a file without changing its contents", () => withTempTool((directory, registry) => Effect.gen(function* () { const source = path.join(directory, "old.txt") const destination = path.join(directory, "moved.txt") yield* Effect.promise(() => fs.writeFile(source, "same\n")) expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: old.txt\n*** Move to: moved.txt\n@@\n same\n*** End Patch"), ), ).toMatchObject({ status: "completed", content: [{ type: "text", text: "Success. Updated the following files:\nM moved.txt" }], }) expect(yield* exists(source)).toBe(false) expect(yield* Effect.promise(() => fs.readFile(destination, "utf8"))).toBe("same\n") }), ), )
it.live("moves a symlink without deleting its target", () => withTempTool((directory, registry) => Effect.gen(function* () { if (process.platform === "win32") return const target = path.join(directory, "target.txt") const source = path.join(directory, "link.txt") const moved = path.join(directory, "moved.txt") yield* Effect.promise(() => fs.writeFile(target, "before\n")) yield* Effect.promise(() => fs.symlink(target, source)) yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: link.txt\n*** Move to: moved.txt\n@@\n-before\n+after\n*** End Patch", ), ) expect(yield* exists(source)).toBe(false) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("before\n") expect(yield* Effect.promise(() => fs.readFile(moved, "utf8"))).toBe("after\n") }), ), )
it.live("includes move file info in output and metadata", () => withTempTool((directory, registry) => Effect.gen(function* () { const source = path.join(directory, "old", "name.txt") yield* Effect.promise(() => fs.mkdir(path.dirname(source), { recursive: true })) yield* Effect.promise(() => fs.writeFile(source, "old content\n")) const settled = yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: old/name.txt\n*** Move to: renamed/dir/name.txt\n@@\n-old content\n+new content\n*** End Patch", ), ) expect(settled.status).toBe("completed") if (settled.status !== "completed") return expect(settled.output).toMatchObject({ applied: [{ type: "update", resource: "renamed/dir/name.txt" }], files: [ { file: "renamed/dir/name.txt", status: "modified", patch: expect.stringContaining(`Index: ${source}`), }, ], }) }), ), )
it.live("includes the move destination in edit permission resources", () => withTempTool((directory, registry) => Effect.gen(function* () { const source = path.join(directory, "old", "name.txt") yield* Effect.promise(() => fs.mkdir(path.dirname(source), { recursive: true })) yield* Effect.promise(() => fs.writeFile(source, "old content\n")) yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: old/name.txt\n*** Move to: renamed/dir/name.txt\n@@\n-old content\n+new content\n*** End Patch", ), ) expect(assertions).toMatchObject([ { action: "edit", resources: ["old/name.txt", "renamed/dir/name.txt"], }, ]) }), ), )
it.live("uses Location-relative resources for move targets in a nested Location", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const active = path.join(tmp.path, "nested", "location") const source = path.join(active, "old.txt") return Effect.promise(() => fs.mkdir(active, { recursive: true }).then(() => fs.writeFile(source, "before\n")), ).pipe( Effect.andThen( withTool( active, (registry) => Effect.gen(function* () { const settled = yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: old.txt\n*** Move to: moved.txt\n@@\n-before\n+after\n*** End Patch", ), ) expect(settled).toMatchObject({ status: "completed", output: { applied: [{ resource: "moved.txt" }] }, }) expect(assertions).toMatchObject([{ action: "edit", resources: ["old.txt", "moved.txt"] }]) }), tmp.path, ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("inserts lines with an insert-only hunk", () => withTempTool((directory, registry) => Effect.gen(function* () { const target = path.join(directory, "insert-only.txt") yield* Effect.promise(() => fs.writeFile(target, "alpha\nomega\n")) yield* executeTool( registry, call("*** Begin Patch\n*** Update File: insert-only.txt\n@@\n alpha\n+beta\n omega\n*** End Patch"), ) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("alpha\nbeta\nomega\n") }), ), )
it.live("rejects deleting a directory", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => fs.mkdir(path.join(directory, "dir"))) expect( yield* executeTool(registry, call("*** Begin Patch\n*** Delete File: dir\n*** End Patch")), ).toMatchObject({ status: "error" }) expect(yield* exists(path.join(directory, "dir"))).toBe(true) }), ), )
it.live("rejects a missing second chunk context", () => withTempTool((directory, registry) => Effect.gen(function* () { const target = path.join(directory, "two-chunks.txt") yield* Effect.promise(() => fs.writeFile(target, "a\nb\nc\nd\n")) expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: two-chunks.txt\n@@\n-b\n+B\n\n-d\n+D\n*** End Patch"), ), ).toMatchObject({ status: "error" }) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("a\nb\nc\nd\n") }), ), )
it.live("requires patchText", () => withTempTool((_directory, registry) => Effect.gen(function* () { expect(yield* executeTool(registry, call(""))).toEqual({ status: "error", error: { type: "tool.execution", message: "patchText is required" }, }) }), ), )
it.live("rejects invalid patch format", () => withTempTool((_directory, registry) => Effect.gen(function* () { expect(yield* executeTool(registry, call("invalid patch"))).toEqual({ status: "error", error: { type: "tool.execution", message: "patch verification failed: The first line of the patch must be '*** Begin Patch'", }, }) expect(yield* executeTool(registry, call("*** Begin Patch\n*** Add File: foo\n+hello"))).toEqual({ status: "error", error: { type: "tool.execution", message: "patch verification failed: The last line of the patch must be '*** End Patch'", }, }) }), ), )
it.live("rejects an empty patch", () => withTempTool((_directory, registry) => Effect.gen(function* () { for (const patchText of [ "*** Begin Patch\n*** End Patch", " *** Begin Patch \n *** End Patch ", "<<EOF\n*** Begin Patch\n*** End Patch\nEOF", "*** Begin Patch\n*** Environment ID: remote\n*** End Patch", ]) { expect(yield* executeTool(registry, call(patchText))).toEqual({ status: "error", error: { type: "tool.execution", message: "patch rejected: empty patch" }, }) } }), ), )
it.live("rejects an invalid hunk header", () => withTempTool((_directory, registry) => Effect.gen(function* () { expect(yield* executeTool(registry, call("*** Begin Patch\n*** Frobnicate File: foo\n*** End Patch"))).toEqual({ status: "error", error: { type: "tool.execution", message: "patch verification failed: Invalid hunk at line 2: '*** Frobnicate File: foo' is not a valid hunk header. Valid hunk headers: '*** Add File: {path}', '*** Delete File: {path}', '*** Update File: {path}'", }, }) }), ), )
it.live("applies successive update operations to one file", () => withTempTool((directory, registry) => Effect.gen(function* () { const target = path.join(directory, "successive.txt") yield* Effect.promise(() => fs.writeFile(target, "a\nb\n")) yield* executeTool( registry, call( "*** Begin Patch\n*** Update File: successive.txt\n@@\n-a\n+A\n*** Update File: successive.txt\n@@\n-b\n+B\n*** End Patch", ), ) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("A\nB\n") }), ), )
it.live("does not invent a first-line diff for BOM files", () => withTempTool((directory, registry) => Effect.gen(function* () { const bom = "\uFEFF" const target = path.join(directory, "example.cs") yield* Effect.promise(() => fs.writeFile(target, `${bom}using System;\n\nclass Test {}\n`)) formatFile = (file) => Effect.promise(async () => { await fs.writeFile(file, (await fs.readFile(file, "utf8")).replace(/^\uFEFF/, "")) return true }) const settled = yield* executeTool( registry, call("*** Begin Patch\n*** Update File: example.cs\n@@\n class Test {}\n+class Next {}\n*** End Patch"), ) expect(settled.status).toBe("completed") if (settled.status !== "completed") return const output = Schema.decodeUnknownSync(PatchTool.Output)(settled.output) expect(output.files[0]?.patch).not.toContain(bom) expect(output.files[0]?.patch).not.toContain("-using System;") expect(output.files[0]?.patch).not.toContain("+using System;") expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe( `${bom}using System;\n\nclass Test {}\nclass Next {}\n`, ) }), ), )
it.live("rejects an update with missing context", () => withTempTool((directory, registry) => Effect.gen(function* () { const target = path.join(directory, "unchanged.txt") yield* Effect.promise(() => fs.writeFile(target, "line1\nline2\n")) expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: unchanged.txt\n@@\n-missing\n+changed\n*** End Patch"), ), ).toMatchObject({ status: "error", error: { type: "tool.execution", message: "patch verification failed: Failed to find expected lines in unchanged.txt:\nmissing", }, }) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("line1\nline2\n") }), ), )
it.live("rejects an update when the target file is missing", () => withTempTool((directory, registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: missing.txt\n@@\n-old\n+new\n*** End Patch"), ), ).toMatchObject({ status: "error", error: { message: expect.stringContaining( `patch verification failed: Failed to read file to update ${path.join(directory, "missing.txt")}: `, ), }, }) }), ), )
it.live("identifies a directory used as an update target", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => fs.mkdir(path.join(directory, "nested"))) expect( yield* executeTool(registry, call("*** Begin Patch\n*** Update File: nested\n@@\n-old\n+new\n*** End Patch")), ).toEqual({ status: "error", error: { type: "tool.execution", message: `patch verification failed: Failed to read file to update ${path.join(directory, "nested")}: path is a directory`, }, }) }), ), )
it.live("identifies a missing delete target", () => withTempTool((_directory, registry) => Effect.gen(function* () { expect( yield* executeTool(registry, call("*** Begin Patch\n*** Delete File: missing.txt\n*** End Patch")), ).toEqual({ status: "error", error: { type: "tool.execution", message: "patch verification failed: Failed to delete missing.txt: file does not exist", }, }) }), ), )
it.live("reports the failing destination and filesystem error", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => fs.writeFile(path.join(directory, "old.txt"), "before\n")) failWriteTarget = "new.txt" expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: old.txt\n*** Move to: new.txt\n@@\n-before\n+after\n*** End Patch"), ), ).toEqual({ status: "error", error: { type: "tool.execution", message: "Failed to write new.txt: forced write failure" }, }) expect(yield* Effect.promise(() => fs.readFile(path.join(directory, "old.txt"), "utf8"))).toBe("before\n") expect(yield* exists(path.join(directory, "new.txt"))).toBe(false) }), ), )
it.live("reports the successful prefix and filesystem error", () => withTempTool((directory, registry) => Effect.gen(function* () { failWriteTarget = "second.txt" expect( yield* executeTool( registry, call("*** Begin Patch\n*** Add File: first.txt\n+first\n*** Add File: second.txt\n+second\n*** End Patch"), ), ).toEqual({ status: "error", error: { type: "tool.execution", message: "Failed to write second.txt: forced write failure. Completed before failure: first.txt", }, }) expect(yield* Effect.promise(() => fs.readFile(path.join(directory, "first.txt"), "utf8"))).toBe("first\n") expect(yield* exists(path.join(directory, "second.txt"))).toBe(false) }), ), )
it.live("reports a destination written before move removal fails", () => withTempTool((directory, registry) => Effect.gen(function* () { yield* Effect.promise(() => fs.writeFile(path.join(directory, "old.txt"), "before\n")) failRemoveErrorTarget = "old.txt" expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: old.txt\n*** Move to: new.txt\n@@\n-before\n+after\n*** End Patch"), ), ).toEqual({ status: "error", error: { type: "tool.execution", message: "Wrote new.txt but failed to remove old.txt: forced remove failure", }, }) expect(yield* Effect.promise(() => fs.readFile(path.join(directory, "old.txt"), "utf8"))).toBe("before\n") expect(yield* Effect.promise(() => fs.readFile(path.join(directory, "new.txt"), "utf8"))).toBe("after\n") }), ), )
it.live("approves an external directory before reading and requests edit permission afterward", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() const repository = path.join(outside.path, "repository") const directory = path.join(repository, "nested") const target = path.join(directory, "external.txt") return Effect.promise(() => Promise.all([ fs.mkdir(path.join(repository, ".git"), { recursive: true }), fs.mkdir(directory, { recursive: true }).then(() => fs.writeFile(target, "before\n")), ]), ).pipe( Effect.andThen( withTool(active.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call(`*** Begin Patch\n*** Update File: ${target}\n@@\n-before\n+after\n*** End Patch`), ), ).toMatchObject({ status: "completed" }) expect(assertions.map((input) => input.action)).toEqual(["external_directory", "edit"]) expect(assertions[0]).toMatchObject({ resources: [path.join(directory, "*").replaceAll("\\", "/")], save: [path.join(repository, "*").replaceAll("\\", "/")], metadata: { filepath: target, parentDir: directory, }, }) expect(assertions[1]?.resources).toEqual([target.replaceAll("\\", "/")]) expect(readsBeforeEditApproval).toBe(1) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("after\n") }), ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("does not inspect an external file when external permission is denied", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() denyAction = "external_directory" const target = path.join(outside.path, "external.txt") return Effect.promise(() => fs.writeFile(target, "before\n")).pipe( Effect.andThen( withTool( active.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call(`*** Begin Patch\n*** Update File: ${target}\n@@\n-before\n+after\n*** End Patch`), ), ).toMatchObject({ status: "error", error: { type: "permission.rejected" } }) expect(assertions.map((input) => input.action)).toEqual(["external_directory"]) expect(readsBeforeEditApproval).toBe(0) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("before\n") }), path.parse(active.path).root, ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("preserves edit permission rejection", () => withTempTool((directory, registry) => Effect.gen(function* () { const target = path.join(directory, "target.txt") yield* Effect.promise(() => fs.writeFile(target, "before\n")) denyAction = "edit" expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: target.txt\n@@\n-before\n+after\n*** End Patch"), ), ).toMatchObject({ status: "error", error: { type: "permission.rejected" } }) expect(assertions.map((input) => input.action)).toEqual(["edit"]) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("before\n") }), ), )
it.live("treats a sibling path inside the project worktree as internal", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const active = path.join(tmp.path, "active") const target = path.join(tmp.path, "sibling.txt") return Effect.promise(() => Promise.all([fs.mkdir(active), fs.writeFile(target, "before\n")])).pipe( Effect.andThen( withTool( active, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: ../sibling.txt\n@@\n-before\n+after\n*** End Patch"), ), ).toMatchObject({ status: "completed" }) expect(assertions.map((input) => input.action)).toEqual(["edit"]) expect(assertions[0]?.resources).toEqual(["../sibling.txt"]) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("after\n") }), tmp.path, ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("follows an internal symlink to an external file without external permission", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() if (process.platform === "win32") return Effect.void const target = path.join(outside.path, "external.txt") const link = path.join(active.path, "link.txt") return Effect.promise(() => fs.writeFile(target, "before\n")).pipe( Effect.andThen(Effect.promise(() => fs.symlink(target, link))), Effect.andThen( withTool(active.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call("*** Begin Patch\n*** Update File: link.txt\n@@\n-before\n+after\n*** End Patch"), ), ).toMatchObject({ status: "completed" }) expect(assertions.map((input) => input.action)).toEqual(["edit"]) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("after\n") }), ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("approves a relative external target before reading and requests edit permission afterward", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() const target = path.join(outside.path, "external.txt") const relative = path.relative(active.path, target) return Effect.promise(() => fs.writeFile(target, "before\n")).pipe( Effect.andThen( withTool(active.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call(`*** Begin Patch\n*** Update File: ${relative}\n@@\n-before\n+after\n*** End Patch`), ), ).toMatchObject({ status: "completed" }) expect(assertions.map((input) => input.action)).toEqual(["external_directory", "edit"]) expect(readsBeforeEditApproval).toBe(1) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("after\n") }), ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("uses canonical external permissions and resources for a move destination", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() const source = path.join(active.path, "source.txt") const destination = path.join(outside.path, "moved.txt") return Effect.promise(() => fs.writeFile(source, "before\n")).pipe( Effect.andThen( withTool(active.path, (registry) => Effect.gen(function* () { const settled = yield* executeTool( registry, call( `*** Begin Patch\n*** Update File: source.txt\n*** Move to: ${destination}\n@@\n-before\n+after\n*** End Patch`, ), ) expect(settled).toMatchObject({ status: "completed", output: { applied: [{ resource: destination.replaceAll("\\", "/") }] }, }) expect(assertions).toMatchObject([ { action: "external_directory", resources: [path.join(outside.path, "*").replaceAll("\\", "/")], save: [path.join(outside.path, "*").replaceAll("\\", "/")], metadata: { filepath: destination, parentDir: outside.path }, }, { action: "edit", resources: ["source.txt", destination.replaceAll("\\", "/")], }, ]) expect(yield* exists(source)).toBe(false) expect(yield* Effect.promise(() => fs.readFile(destination, "utf8"))).toBe("after\n") }), ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("approves each external file under the same parent", () => Effect.acquireUseRelease( Effect.promise(() => Promise.all([tmpdir(), tmpdir()])), ([active, outside]) => { reset() const first = path.join(outside.path, "first.txt") const second = path.join(outside.path, "second.txt") return Effect.promise(() => Promise.all([fs.writeFile(first, "before\n"), fs.writeFile(second, "before\n")]), ).pipe( Effect.andThen( withTool(active.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call( `*** Begin Patch\n*** Update File: ${first}\n@@\n-before\n+after\n*** Update File: ${second}\n@@\n-before\n+after\n*** End Patch`, ), ), ).toMatchObject({ status: "completed" }) expect(assertions.map((input) => input.action)).toEqual([ "external_directory", "external_directory", "edit", ]) expect(assertions[0]?.resources).toEqual([ path.join(yield* Effect.promise(() => fs.realpath(outside.path)), "*").replaceAll("\\", "/"), ]) expect(assertions[1]?.resources).toEqual(assertions[0]?.resources) }), ), ), ) }, ([active, outside]) => Effect.promise(() => Promise.all([active[Symbol.asyncDispose](), outside[Symbol.asyncDispose]()]).then(() => undefined), ), ), )
it.live("rejects invalid later update before applying an earlier add", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() return withTool(tmp.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call( "*** Begin Patch\n*** Add File: created.txt\n+created\n*** Update File: missing.txt\n@@\n-before\n+after\n*** End Patch", ), ), ).toMatchObject({ status: "error", error: { message: expect.stringContaining("patch verification failed: Failed to read file to update"), }, }) expect(yield* exists(path.join(tmp.path, "created.txt"))).toBe(false) }), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("adds files by overwriting existing targets", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const target = path.join(tmp.path, "existing.txt") return Effect.promise(() => fs.writeFile(target, "sentinel\n")).pipe( Effect.andThen( withTool(tmp.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call("*** Begin Patch\n*** Add File: existing.txt\n+replacement\n*** End Patch"), ), ).toMatchObject({ status: "completed" }) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("replacement\n") }), ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("overwrites an add target that appears during permission approval", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const target = path.join(tmp.path, "appeared.txt") afterEditApproval = () => Effect.promise(() => fs.writeFile(target, "winner\n")).pipe(Effect.orDie) return withTool(tmp.path, (registry) => Effect.gen(function* () { expect( yield* executeTool( registry, call("*** Begin Patch\n*** Add File: appeared.txt\n+replacement\n*** End Patch"), ), ).toMatchObject({ status: "completed" }) expect(yield* Effect.promise(() => fs.readFile(target, "utf8"))).toBe("replacement\n") }), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )
it.live("preserves a later commit defect after earlier sequential applications", () => Effect.acquireUseRelease( Effect.promise(() => tmpdir()), (tmp) => { reset() const first = path.join(tmp.path, "first.txt") const second = path.join(tmp.path, "second.txt") failRemoveTarget = path.basename(second) return Effect.promise(() => Promise.all([fs.writeFile(first, "first"), fs.writeFile(second, "second")])).pipe( Effect.andThen( withTool(tmp.path, (registry) => Effect.gen(function* () { expect( Exit.isFailure( yield* executeTool( registry, call("*** Begin Patch\n*** Delete File: first.txt\n*** Delete File: second.txt\n*** End Patch"), ).pipe(Effect.exit), ), ).toBe(true) expect(yield* exists(first)).toBe(false) expect(yield* exists(second)).toBe(true) }), ), ), ) }, (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()), ), )})