69 lines
2.5 KiB
TypeScript
69 lines
2.5 KiB
TypeScript
import { describe, expect, test } from "bun:test"
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import { Patch } from "@opencode-ai/core/patch"
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describe("Patch", () => {
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test("parses add, update, and delete hunks", () => {
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expect(
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Patch.parse(
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"*** 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",
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),
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).toEqual([
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{ type: "add", path: "add.txt", contents: "added" },
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{
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type: "update",
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path: "update.txt",
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chunks: [{ oldLines: ["old"], newLines: ["new"], changeContext: "section", endOfFile: undefined }],
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movePath: undefined,
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},
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{ type: "delete", path: "delete.txt" },
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])
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})
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test("strips a heredoc wrapper", () => {
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expect(Patch.parse("cat <<'EOF'\n*** Begin Patch\n*** Add File: add.txt\n+added\n*** End Patch\nEOF")).toEqual([
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{ type: "add", path: "add.txt", contents: "added" },
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])
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})
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test("derives fuzzy line updates while preserving BOM", () => {
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const update = Patch.derive("update.txt", [{ oldLines: [" old "], newLines: ["new"] }], "\uFEFFold\n")
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expect(update).toEqual({ content: "new\n", bom: true })
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expect(Patch.joinBom(update.content, update.bom)).toBe("\uFEFFnew\n")
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})
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test("matches EOF-anchored chunks from the end", () => {
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expect(
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Patch.derive(
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"update.txt",
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[{ oldLines: ["marker", "end"], newLines: ["marker changed", "end"], endOfFile: true }],
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"marker\nmiddle\nmarker\nend\n",
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).content,
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).toBe("marker\nmiddle\nmarker changed\nend\n")
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})
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test("parses the EOF marker inside update chunks", () => {
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expect(
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Patch.parse("*** Begin Patch\n*** Update File: update.txt\n@@\n-last\n+end\n*** End of File\n*** End Patch"),
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).toEqual([
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{
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type: "update",
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path: "update.txt",
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movePath: undefined,
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chunks: [{ oldLines: ["last"], newLines: ["end"], changeContext: undefined, endOfFile: true }],
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},
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])
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})
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test("rejects malformed hunk bodies", () => {
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expect(() => Patch.parse("*** Begin Patch\n*** Add File: add.txt\nmissing plus\n*** End Patch")).toThrow(
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"Invalid add file line",
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)
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expect(() => Patch.parse("*** Begin Patch\n*** Update File: update.txt\n*** End Patch")).toThrow(
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"expected at least one @@ chunk",
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)
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expect(() => Patch.parse("*** Begin Patch\n*** Delete File: delete.txt\nunexpected body\n*** End Patch")).toThrow(
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"Invalid patch line",
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)
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})
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})
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