# Can't test my Angular App with Karma and Jasmine
**URL:** https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432
**Category:** General
**Created:** [June 2, 2024, 6:20pm UTC](https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432 "2024-06-02T18:20:35Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Thunder](https://community.firebasestudio.dev/u/Thunder)
#### Post date: [June 2, 2024, 6:20pm UTC](https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432/1 "2024-06-02T18:20:35Z")
Hello, I am trying to test my Angular application in Project IDX, but I am encountering this error when I run `ng test`:
```auto
amgularapp-3920773:~/amgularapp$ ng test
✔ Browser application bundle generation complete.
02 06 2024 18:16:39.452:WARN [karma]: No captured browser, open http://localhost:9876/
02 06 2024 18:16:39.502:INFO [karma-server]: Karma v6.4.3 server started at http://localhost:9876/
02 06 2024 18:16:39.507:INFO [launcher]: Launching browsers Chrome with concurrency unlimited
02 06 2024 18:16:39.513:INFO [launcher]: Starting browser Chrome
02 06 2024 18:16:39.514:ERROR [launcher]: No binary for Chrome browser on your platform.
Please, set "CHROME_BIN" env variable.
```
This is my karma.conf.js:
```auto
module.exports = function(config) {
config.set({
basePath: '',
frameworks: ['jasmine', '@angular-devkit/build-angular'],
plugins: [
require('karma-jasmine'),
require('karma-chrome-launcher'),
require('karma-jasmine-html-reporter'),
require('@angular-devkit/build-angular/plugins/karma')
],
client: {
clearContext: false
},
coverageIstanbulReporter: {
dir: require('path').join(__dirname, './coverage/nombre-proyecto'),
reports: ['html', 'lcovonly', 'text-summary'],
fixWebpackSourcePaths: true
},
reporters: ['progress', 'kjhtml'],
port: 9876,
colors: true,
logLevel: config.LOG_DEBUG,
autoWatch: true,
browsers: ['CustomChromeHeadless'],
singleRun: false,
restartOnFileChange: true,
browserDisconnectTimeout: 10000,
browserDisconnectTolerance: 3,
browserNoActivityTimeout: 60000,
customLaunchers: {
CustomChromeHeadless: {
base: 'ChromeHeadless',
flags: ['--no-sandbox']
}
}
});
};
```
---
### Author:  [@Matias\_Vergara](https://community.firebasestudio.dev/u/Matias_Vergara)
#### Post date: [June 20, 2024, 8:37pm UTC](https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432/2 "2024-06-20T20:37:49Z")
Having the same issue
---
### Author:  [@Sunny](https://community.firebasestudio.dev/u/Sunny)
#### Post date: [June 25, 2024, 9:01pm UTC](https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432/3 "2024-06-25T21:01:06Z")
Try installing chromium by adding the following snippet into `dev.nix`
```auto
packages = [
# What you already have
pkg.chromium
];
env = {
# What you already have
CHROME_BIN="/usr/bin/chromium";
};
```
---
### Author:  [@msofteng](https://community.firebasestudio.dev/u/msofteng)
#### Post date: [February 1, 2025, 4:25am UTC](https://community.firebasestudio.dev/t/cant-test-my-angular-app-with-karma-and-jasmine/432/4 "2025-02-01T04:25:25Z")
```auto
> angular-app@0.0.0 test
> ng test --no-watch --code-coverage
✔ Browser application bundle generation complete.
30 01 2025 03:56:40.608:INFO [karma-server]: Karma v6.4.4 server started at http://localhost:9876/
30 01 2025 03:56:40.620:INFO [launcher]: Launching browsers Chrome with concurrency unlimited
30 01 2025 03:56:40.628:INFO [launcher]: Starting browser Chrome
30 01 2025 03:56:42.092:ERROR [launcher]: Cannot start Chrome
[5912:5960:0130/035642.081972:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5912:5912:0130/035642.082476:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5912:5912:0130/035642.082493:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.092:ERROR [launcher]: Chrome stdout:
30 01 2025 03:56:42.092:ERROR [launcher]: Chrome stderr: [5912:5960:0130/035642.081972:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5912:5912:0130/035642.082476:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5912:5912:0130/035642.082493:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.098:INFO [launcher]: Trying to start Chrome again (1/2).
30 01 2025 03:56:42.257:ERROR [launcher]: Cannot start Chrome
[5965:5988:0130/035642.250554:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5965:5965:0130/035642.252362:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5965:5965:0130/035642.252384:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.257:ERROR [launcher]: Chrome stdout:
30 01 2025 03:56:42.258:ERROR [launcher]: Chrome stderr: [5965:5988:0130/035642.250554:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5965:5965:0130/035642.252362:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5965:5965:0130/035642.252384:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.262:INFO [launcher]: Trying to start Chrome again (2/2).
30 01 2025 03:56:42.417:ERROR [launcher]: Cannot start Chrome
[5995:6019:0130/035642.408742:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5995:5995:0130/035642.411078:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5995:5995:0130/035642.411101:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.418:ERROR [launcher]: Chrome stdout:
30 01 2025 03:56:42.419:ERROR [launcher]: Chrome stderr: [5995:6019:0130/035642.408742:ERROR:bus.cc(407)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[5995:5995:0130/035642.411078:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[5995:5995:0130/035642.411101:ERROR:env.cc(257)] The platform failed to initialize. Exiting.
30 01 2025 03:56:42.423:ERROR [launcher]: Chrome failed 2 times (cannot start). Giving up.
```