WebStorm 2018.2 Help

Run/Debug Configuration: Karma

Run | Edit Configurations | icons general add svg | Karma


In this dialog box, create configurations for running and debugging JavaScript unit tests using the Karma test runner.

Getting access to the Run/Debug Configuration: Karma dialog

  1. Make sure the Node.js plugin is enabled. The plugin is activated by default. If the plugin is disabled, enable it on the Plugins settings page as described in Managing Plugins.

  2. Download and install Node.js that contains the Node Package Manager(npm).

  3. Using the Node Package Manager, install the Karma test runner as described in Karma.

  4. Make sure the Karma plugin is activated. The plugin is activated by default. If the plugin is disabled, enable it on the Plugins settings page as described in Managing Plugins.

Karma-specific configuration settings

Item

Description

Configuration file

In this field, specify the location of the Karma configuration file. Normally, the file has the extensions .conf.js

Browsers to start

In this field, specify the browsers from which Karma will access its server. To run or debug your tests in Headless Chrome, type ChromeHeadless, learn more from Automated testing with Headless Chrome. The field is optional, use it to override the default browsers settings from karma.conf.js.

Node interpreter

In this field, specify the Node.js interpreter to use. This can be a local Node.js interpreter or a Node.js on Windows Subsystem for Linux.

Node options

In this text box, type the Node.js-specific command line options to be passed to the Node.js executable file.
  • Use --require coffee-script/register to have CoffeeScript files compiled into JavaScript on the fly during run. This mode requires that the register.js file, which is a part of the coffee-script package, should be located inside the project. Therefore you need to install the coffee-script package on the Node.js page locally, as described in npm and Yarn.

  • Use --inspect parameter when you are using Node.js v7 for Chrome Debugging Protocol support. Otherwise, by default the debug process will use V8 Debugging Protocol.

Karma package

In this field, specify the Karma installation home /npm/node_modules/karma. If you installed Karma regularly through the Node Package Manager, WebStorm detects the Karma installation home itself. Alternatively, type the path to executable file manually, or click Browse browseButton.png and select the location in the dialog box, that opens.

Environment variables

In this field, optionally specify the environment variables for executing commands.

Tests

In this area, specify the tests to be executed. The available options are:
  • All tests: choose this option to run all the tests from the karma.conf.js configuration file.

  • Test file: choose this option to run only the tests from one file and specify the path to this file in the Test file field.

  • Suite: choose this option to run individual suites from a test file and specify the path to this file in the Test file field. Click the Suite name field and configure a list of suites to run. To add a suite to the list, click icons general add and type the name of the required suite. To remove a suite, select it in the list and click minusSign.png

  • Test: choose this option to run individual tests from a test file and specify the path to this file in the Test file field. Click the Test name field and configure a list of tests to run. To add a test to the list, click icons general add and type the name of the required test. To remove a test, select it in the list and click minusSign.png

Common options

When you edit a run configuration (but not a run configuration template), you can specify the following options for it:

Item

Description

Name

In this text box, specify the name for the run/debug configuration. The name will help you identify the created configuration when you choose to edit it later, or when you invoke it, for example. from the Run popup (Shift+Alt+F10).

Share

Select this check box to make the run/debug configuration available to other team members.

The shared run/debug configurations are kept in separate xml files under .idea\runConfigurations folder, while the local run/debug configurations are kept in the .idea\workspace.xml.

Toolbar

The tree view of run/debug configurations has a toolbar that helps you manage configurations available in your project as well as adjust default configurations templates.

Item

Shortcut

Description

icons general add svgAlt+Insert

Create a run/debug configuration.

icons general remove svgAlt+Delete

Delete the selected run/debug configuration. Note that you cannot delete default configurations.

icons actions copy svg

Ctrl+D

Create a copy of the selected run/debug configuration. Note that you create copies of default configurations.

icons general settings svg

Edit Templates

View and edit the default template for the selected run/debug configuration. The templates are used for newly created configurations.

icons actions moveUp svg/icons actions moveDown svg

Alt+Up/Alt+Down

Move the selected run/debug configuration up and down in the list.

The order of configurations in the list defines the order, in which the configurations appear when you choose a run/debug configuration.

Default templates of run/debug configurations are always sorted alphabetically.

icons actions newFolder svg

Move into new folder / Create new folder

You can group run/debug configurations by placing them into folders.

To create a folder, select the configurations within a category, click folder, and specify folder name. If only a category is in focus, an empty folder is created.

Then, to move a configuration into a folder, between the folders or out of a folder, use drag-and-drop or icons actions moveUp svg and icons actions moveDown svg buttons.

To remove grouping, select a folder and click icons general remove svg.

icons objectBrowser sorted svg

Sort configurations

Click this button to sort configurations in the alphabetical order.

Templates

Under the Templates node in the tree view of run configurations, you can select a run configuration template and edit its default settings. This will not affect the configurations that are already created, but will be used as defaults when creating new configurations of the corresponding type.

When you select the Templates node itself, you will be able to adjust general settings that apply to all run/debug configurations:

Item

Description

Configurations available in Run Dashboard

In this section you can create a list of run configurations available in the Run Dashboard — a tool window that helps you execute and manage multiple run/debug configurations.

Note that the dashboard will only display the configuration types for which you have created one ore more configurations.
Thus, if you add a configuration type for which no configurations exist in the project, this type will not be displayed on the dashboard until you create a configuration of this type.

Confirm rerun with process termination

The behavior of this checkbox depends on whether the Single instance only option is selected for a particular run/debug configuration.
  • If this checkbox is selected, in case of a single instance, launching a new process (for example, by clicking icons toolwindows toolWindowRun on the main toolbar) while another process is still running, results in showing a dialog box prompting to terminate the current process before launching a new one.

  • If this checkbox is not selected (or in case of multiple instances), WebStorm starts the new process silently.

Temporary configurations limit

Specify the maximum number of temporary configurations to be stored and shown in the Select Run/Debug Configuration drop-down list.

Before Launch options

In this area you can specify tasks that must be be performed before starting the selected run/debug configuration. The tasks are performed in the order they appear in the list.

Item

Shortcut

Description

icons general add svgAlt+Insert Click this icon to add one of the following available tasks:
  • Run External tool: select to run an external application. In the dialog that opens, select one or multiple applications you want to run. If it is not defined in WebStorm yet, add its definition. For more information, see Configuring Third-Party Tools and External Tools.

  • Run Another Configuration: select to execute another run/debug configuration. In the dialog that opens, select the configuration to be run.

  • Run File Watchers: select this option to have WebStorm apply all the currently active file watchers.

  • Run Grunt task: select this option to run a Grunt task. In the Grunt task dialog box that opens, specify the Gruntfile.js where the required task is defined, select the task to execute, and specify the arguments to pass to the Grunt tool.

    Specify the location of the Node.js interpreter, the parameters to pass to it, and the path to the grunt-cli package.

  • Run Gulp task: select this option to run a Gulp task. In the Gulp task dialog box that opens, specify the Gulpfile.js where the required task is defined, select the task to execute, and specify the arguments to pass to the Gulp tool.

    Specify the location of the Node.js interpreter, the parameters to pass to it, and the path to the gulp package.

  • Run npm Script: select this option to execute an npm script. In the NPM Script dialog box that opens, specify the npm run/debug configuration settings.

  • Compile TypeScript: select to run the built-in TypeScript compiler and thus make sure that all the changes you made to your TypeScript code are reflected in the generated JavaScript files. In the TypeScript Compile Settings dialog that opens, select or clear the Check errors checkbox to configure the behaviour of the compiler in case any errors are detected:
    • If the Check errors checkbox is selected, the compiler will show all the errors and the run configuration will not start.

    • If the Check errors checkbox is cleared, the compiler will show all the detected errors but the run configuration still will be launched.

  • Generate CoffeeScript Source Maps: select this option to generate the source maps for your CoffeeScript sources. In the dialog that opens, specify where your CoffeeScript source files are located.

icons general remove svgAlt+Delete

Click this icon to remove the selected task from the list.

icons actions edit svg

Enter

Click this icon to edit the selected task. Make the necessary changes in the dialog that opens.

icons actions moveUp svg/icons actions moveDown svg

Alt+Up/Alt+Down

Click these icons to move the selected task one line up or down in the list. (The tasks are performed in the order that they appear in the list.)

Show this page

Select this checkbox to show the run/debug configuration settings prior to actually starting the run/debug configuration.

Activate tool window

If this checkbox is selected, which it is by default, the Run or the Debug tool window opens when you start the run/debug configuration.

Otherwise, the tool window isn't shown. However, when the configuration is running, you can open the corresponding tool window for it yourself by pressing Alt+4 or Alt+5.

Last modified: 24 September 2018

See Also