parser.test.js

const parser = require("./parser");

test("Parse tokens", done => {
  const tokens = [
    { name: "lbra", index: 0, raw: "[" },
    { name: "number", index: 1, raw: "1" },
    { name: "number", index: 3, raw: "2" },
    { name: "number", index: 5, raw: "3" },
    { name: "rbra", index: 6, raw: "]" },
    { name: "map", index: 10, raw: "-> *" },
    { name: "symbol", index: 15, raw: "mul" },
    { name: "number", index: 19, raw: "2" },
    { name: "flow_end", raw: "flow_end", index: 20 },
    { name: "map", index: 23, raw: "-> *" },
    { name: "symbol", index: 28, raw: "add" },
    { name: "number", index: 32, raw: "1" },
    { name: "flow_end", raw: "flow_end", index: 33 },
    { name: "pipe", index: 36, raw: "->" },
    { name: "symbol", index: 39, raw: "print" },
    { name: "flow_end", raw: "flow_end", index: 45 },
    { name: "lbra", index: 46, raw: "[" },
    { name: "number", index: 47, raw: "1" },
    { name: "number", index: 49, raw: "2" },
    { name: "number", index: 51, raw: "3" },
    { name: "rbra", index: 52, raw: "]" },
    { name: "map", index: 56, raw: "-> *" },
    { name: "symbol", index: 61, raw: "mul" },
    { name: "number", index: 65, raw: "2" },
    { name: "flow_end", raw: "flow_end", index: 66 },
    { name: "map", index: 69, raw: "-> *" },
    { name: "symbol", index: 74, raw: "add" },
    { name: "number", index: 78, raw: "1" },
    { name: "flow_end", raw: "flow_end", index: 79 },
    { name: "map", index: 82, raw: "-> *" },
    { name: "symbol", index: 87, raw: "print" },
    { name: "flow_end", raw: "flow_end", index: 92 },
    { name: "eof", raw: "eof", index: 92 }
  ];
  const [_, output] = parser.parse(tokens);
  expect(output[0].name).toBe("clio");
  done();
});