fix(core): improve patch errors (#38016)

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Aiden Cline 2026-07-20 22:49:04 -05:00 committed by GitHub
commit 63e2054f50
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4 changed files with 102 additions and 27 deletions

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@ -1,10 +1,13 @@
import { describe, expect, test } from "bun:test"
import { Patch } from "@opencode-ai/core/patch"
import { Result } from "effect"
const parse = (input: string) => Result.getOrThrow(Patch.parse(input))
describe("Patch", () => {
test("parses add, update, and delete hunks", () => {
expect(
Patch.parse(
parse(
"*** Begin Patch\n*** Add File: add.txt\n+added\n*** Update File: update.txt\n@@ section\n-old\n+new\n*** Delete File: delete.txt\n*** End Patch",
),
).toEqual([
@ -21,7 +24,7 @@ describe("Patch", () => {
test("parses a file move", () => {
expect(
Patch.parse(
parse(
"*** Begin Patch\n*** Update File: old.txt\n*** Move to: new.txt\n@@\n-old\n+new\n*** End Patch",
),
).toEqual([
@ -34,18 +37,23 @@ describe("Patch", () => {
])
})
test("rejects invalid patch format", () => {
expect(() => Patch.parse("This is not a valid patch")).toThrow("Invalid patch format")
test("identifies the missing patch boundary", () => {
expect(() => parse("This is not a valid patch")).toThrow(
"The first line of the patch must be '*** Begin Patch'",
)
expect(() => parse("*** Begin Patch\n*** Add File: add.txt\n+added")).toThrow(
"The last line of the patch must be '*** End Patch'",
)
})
test("strips a heredoc wrapper", () => {
expect(Patch.parse("cat <<'EOF'\n*** Begin Patch\n*** Add File: add.txt\n+added\n*** End Patch\nEOF")).toEqual([
expect(parse("cat <<'EOF'\n*** Begin Patch\n*** Add File: add.txt\n+added\n*** End Patch\nEOF")).toEqual([
{ type: "add", path: "add.txt", contents: "added" },
])
})
test("strips a heredoc wrapper without cat", () => {
expect(Patch.parse("<<EOF\n*** Begin Patch\n*** Add File: add.txt\n+added\n*** End Patch\nEOF")).toEqual([
expect(parse("<<EOF\n*** Begin Patch\n*** Add File: add.txt\n+added\n*** End Patch\nEOF")).toEqual([
{ type: "add", path: "add.txt", contents: "added" },
])
})
@ -112,13 +120,13 @@ describe("Patch", () => {
})
test("matches V1 lenient parsing of malformed hunk bodies", () => {
expect(Patch.parse("*** Begin Patch\n*** Add File: add.txt\nmissing plus\n*** End Patch")).toEqual([
expect(parse("*** Begin Patch\n*** Add File: add.txt\nmissing plus\n*** End Patch")).toEqual([
{ type: "add", path: "add.txt", contents: "" },
])
expect(Patch.parse("*** Begin Patch\n*** Update File: update.txt\n*** End Patch")).toEqual([
expect(parse("*** Begin Patch\n*** Update File: update.txt\n*** End Patch")).toEqual([
{ type: "update", path: "update.txt", movePath: undefined, chunks: [] },
])
expect(Patch.parse("*** Begin Patch\n*** Delete File: delete.txt\nunexpected body\n*** End Patch")).toEqual([
expect(parse("*** Begin Patch\n*** Delete File: delete.txt\nunexpected body\n*** End Patch")).toEqual([
{ type: "delete", path: "delete.txt" },
])
})