babel/packages/babel-types/test/asserts.js

import * as t from "../lib";

describe("asserts", () => {
  const consoleTrace = console.trace;

  beforeEach(() => {
    console.trace = () => {};
  });

  afterEach(() => {
    console.trace = consoleTrace;
  });

  Object.keys(t).forEach(k => {
    if (k.startsWith("assert") && k !== "assertNode") {
      const nodeType = k.replace("assert", "");

      it(nodeType, () => {
        expect(() => {
          t[k]({ type: "FlavorTownDeclaration" }, {});
        }).toThrow(
          `Expected type "${nodeType}" with option {}, but instead got "FlavorTownDeclaration".`,
        );
      });
    }
  });
});