testMerge3

tcmts.cli.merge.testMerge3 · #vpyh35d7 · term

import { merge3 } from "#codebase/tcmts/cli/merge";

export const testMerge3 = () => {
  const lines = (s: string) => s.split(" ");
  const m = (b: string, o: string, t: string) => merge3(lines(b), lines(o), lines(t))?.join(" ");
  // edits in different places combine
  if (m("a b c d e", "a B c d e", "a b c D e") !== "a B c D e") throw new Error("both edits");
  // one side's edit, and both sides' same edit
  if (m("a b c", "a b c", "a X c") !== "a X c") throw new Error("theirs only");
  if (m("a b c", "a X c", "a X c") !== "a X c") throw new Error("the same edit");
  // additions apart, and a deletion beside an edit elsewhere
  if (m("a b c d", "a o b c d", "a b c t d") !== "a o b c t d") throw new Error("additions apart");
  if (m("a b c d", "a c d", "a b c D") !== "a c D") throw new Error("a deletion and an edit");
  // the same line changed differently, or two additions at one place: a conflict
  if (m("a b c", "a O c", "a T c") !== undefined) throw new Error("a conflict");
  if (m("a c", "a o c", "a t c") !== undefined) throw new Error("additions at one place");
  // a side that changed nothing takes the other's whole
  if (m("a", "x y", "a") !== "x y") throw new Error("all of ours");
}

uses

• tcmts.cli.merge.merge3