assertthat/build/lib/formatErrorMessage.js

assertthat provides fluent TDD.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.formatErrorMessage = void 0;
const chalk_1 = __importDefault(require("chalk"));
const propagateDiffSymbols_1 = require("./prettyPrint/utils/propagateDiffSymbols");
const common_tags_1 = require("common-tags");
const formatErrorMessage = function ({ message, expected, actual, diff }) {
    // Some test libraries (e.g. mocha) print the errors thrown in tests in red.
    // Since our diff makes use of color, we want to guarantee that our error
    // message is displayed as intended. To achieve this, we reset all color in
    // the beginning.
    let errorMessage = chalk_1.default.reset(message);
    if (expected) {
        errorMessage += `\n\n${(0, common_tags_1.source) `
      --- EXPECTED --------

        ${expected}
    `}`;
    }
    if (actual) {
        errorMessage += `\n\n${(0, common_tags_1.source) `
      --- ACTUAL ----------

        ${actual}
    `}`;
    }
    if (diff) {
        errorMessage += `\n\n${(0, common_tags_1.source) `
      --- DIFF ------------
      ${chalk_1.default.green('+++ must be added')}
      ${chalk_1.default.red('--- must be removed')}
    `}\n${(0, propagateDiffSymbols_1.propagateDiffSymbols)((0, common_tags_1.source) `
      *** contains changes

        ${diff}
    `)}`;
    }
    return errorMessage;
};
exports.formatErrorMessage = formatErrorMessage;