karma.conf.cjs

// Karma configuration
// Generated on Thu Jul 13 2017 11:01:30 GMT-0700 (PDT)
const fs = require("fs");

module.exports = function (config) {
    config.set({
        // base path that will be used to resolve all patterns (eg. files, exclude)
        basePath: "",

        // frameworks to use
        // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
        frameworks: ["jasmine", "karma-typescript"],

        // list of files / patterns to load in the browser
        files: [
            "packages/!(arcgis-rest-auth)/{src,test}/**/!(*.test.live).ts",
            "scripts/test-helpers.ts"
        ],

        // list of files to exclude
        exclude: [
            "packages/*/{src,test}/**/*.test.live.ts",
            "packages/*/dist/**/*"
        ],

        karmaTypescriptConfig: {
            coverageOptions: {
                instrumentation: true,
                threshold: {
                    global: {
                        statements: 100,
                        branches: 100,
                        functions: 100,
                        lines: 100
                    }
                }
            },
            reports: {
                json: {
                    directory: "coverage",
                    filename: "coverage.json"
                },
                html: "coverage"
            },
            compilerOptions: {
                module: "commonjs"
            },
            tsconfig: "./tsconfig.json",
            bundlerOptions: {
                transforms: [
                    require("karma-typescript-es6-transform")({
                        presets: [
                            [
                                "env",
                                {
                                    targets: {
                                        browsers: ["last 2 Chrome versions"]
                                    }
                                }
                            ]
                        ]
                    })
                ],
                resolve: {
                    // karmas resolver cant figure out the symlinked deps from lerna
                    // so we need to manually alias each package here.
                    alias: fs
                        .readdirSync("packages")
                        .filter((p) => p[0] !== ".")
                        .reduce(
                            (alias, p) => {
                                if (
                                    p !== "arcgis-rest-fetch" &&
                                    p !== "arcgis-rest-form-data"
                                ) {
                                    alias[`@esri/${p}`] = `packages/${p}/src/index.ts`;
                                }
                                return alias;
                            },
                            {
                                "@types/terraformer__arcgis": `packages/arcgis-rest-geocoding/node_modules/@terraformer/arcgis/dist/t-arcgis.esm.js`,
                                "@esri/arcgis-rest-fetch": `packages/arcgis-rest-fetch/browser-ponyfill.js`,
                                "@esri/arcgis-rest-form-data": `packages/arcgis-rest-form-data/browser-ponyfill.js`
                            }
                        )
                }
            }
        },

        // preprocess matching files before serving them to the browser
        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
        preprocessors: {
            "**/*.ts": ["karma-typescript"] // *.tsx for React Jsx
        },

        // test results reporter to use
        // possible values: 'dots', 'progress'
        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
        reporters: ["jasmine-diff", "dots", "karma-typescript"],

        // web server port
        port: 9876,

        // enable / disable colors in the output (reporters and logs)
        colors: true,

        // level of logging
        // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
        logLevel: config.LOG_INFO,

        // enable / disable watching file and executing tests whenever any file changes
        autoWatch: true,

        // start these browsers
        // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
        browsers: [
            // 'Chrome',
            // 'ChromeCanary',
            // 'Firefox',
            // 'Safari',
            // 'IE'
        ],

        // Continuous Integration mode
        // if true, Karma captures browsers, runs the tests and exits
        singleRun: false,

        // Concurrency level
        // how many browsers should be started simultaneously
        concurrency: Infinity,
        customLaunchers: {
            ChromeHeadlessCI: {
                base: "ChromeHeadless",
                flags: ["--no-sandbox"]
            },
            ChromeDebugging: {
                base: "Chrome",
                flags: ["--remote-debugging-port=9333"]
            }
        }
    });
};