Function assertUnchanged

packages/dofs/src/provider.test.ts:486–489

(p: SQLiteWorkspaceProvider)

        p.mkdirSync("/dst", {});
      },
      assertUnchanged(p: SQLiteWorkspaceProvider) {
        expect(p.readFileSync("/src", "utf8")).toBe("new");
        expect(p.statSync("/dst").isDirectory()).toBe(true);
      },
    },
    {
      name: "symlink → existing empty dir",