create-expo-cljs-app/template/node_modules/metro/src/ModuleGraph/test-helpers.js

Create a react native application with Expo and Shadow-CLJS!

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */
"use strict";

const generate = require("@babel/generator").default;

const _require = require("jest-snapshot"),
  toMatchSnapshot = _require.toMatchSnapshot;

const generateOptions = {
  concise: true,
  sourceType: "module"
};

const codeFromAst = ast => generate(ast, generateOptions).code;

const comparableCode = code => code.trim().replace(/\s+/g, " ");

function toEqualComparableCode(received, expected) {
  const comparableExpected = comparableCode(expected);
  const pass = received === comparableExpected;
  const options = {
    isNot: this.isNot,
    promise: this.promise
  };
  const message = pass
    ? () =>
        this.utils.matcherHint(
          "toEqualComparableCode",
          undefined,
          undefined,
          options
        ) +
        "\n\n" +
        `Expected: not ${this.utils.printExpected(comparableExpected)}\n` +
        `Received: ${this.utils.printReceived(received)}`
    : () => {
        const diffString = this.utils.printDiffOrStringify(
          comparableExpected,
          received,
          "expected",
          "received",
          this.expand
        );
        return (
          this.utils.matcherHint(
            "toEqualComparableCode",
            undefined,
            undefined,
            options
          ) +
          "\n\n" +
          diffString
        );
      };
  return {
    actual: received,
    message,
    pass
  };
} // See https://superuser.com/questions/380772/removing-ansi-color-codes-from-text-stream

const ANSI_PATTERN = /\x1b\[[0-9;]*m/g;

function trimANSICodes(input) {
  return input.replace(ANSI_PATTERN, "");
}
/**
 * Matches a text that contains ANSI control codes (e.g. [39m^) against a snapshot.
 * Usage: Call expect.extend({toMatchCodeFrameSnapshot}) to add the matcher in your test
 */

function toMatchCodeFrameSnapshot(received) {
  return toMatchSnapshot.call(
    this,
    trimANSICodes(received),
    "toMatchCodeFrameSnapshot"
  );
}

module.exports = {
  codeFromAst,
  comparableCode,
  toEqualComparableCode,
  toMatchCodeFrameSnapshot
};