Function expectDiff

core/edit/lazy/deterministic.test.ts:52–84

(file: string)

}

async function expectDiff(file: string) {
  const testFilePath = path.join(
    __dirname,
    "edit",
    "lazy",
    "test-examples",
    file + ".diff",
  );
  const testFileContents = fs.readFileSync(testFilePath, "utf-8");
  const [oldFile, newFile, expectedDiff] = testFileContents
    .split("\n---\n")
    .map((s) => s.replace(/^\n+/, "").trimEnd());
  const { ourDiffs: streamDiffs } = await collectDiffs(oldFile, newFile, file);
  const displayedDiff = displayDiff(streamDiffs);

  if (!expectedDiff || expectedDiff.trim() === "") {
    console.log(
      "Expected diff was empty. Writing computed diff to the test file",
    );
    fs.writeFileSync(
      testFilePath,
      `${oldFile}\n\n---\n\n${newFile}\n\n---\n\n${displayDiff(
        continueMyersDiff(oldFile, newFile),
      )}`,
    );

    throw new Error("Expected diff is empty");
  }

  expect(normalizeDisplayedDiff(displayedDiff)).toEqual(
    normalizeDisplayedDiff(expectedDiff),
  );
}

describe("deterministicApplyLazyEdit(", () => {
  test("no changes", async () => {