Run/Debug Configuration: Mocha
In this dialog, create configurations for running and debugging JavaScript unit tests using the Mocha test framework.
Before you start
Download and install Node.js.
Install and enable the Node.js plugin on the Settings/Preferences | Plugins page, tab Marketplace, as described in Installing plugins from JetBrains repository.
Install the Mocha test framework as described in Mocha.
Mocha-specific configuration settings
Item | Description |
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Node.js interpreter | In this field, specify the Node.js interpreter to use. Choose one of the configured interpreters or click and configure a new one as described in Configuring a local Node.js interpreter. If you choose the |
Node options | In this field, type the Node.js-specific command-line options to be passed to the Node.js executable file. See Node Parameters for details. |
Working directory | In this field, specify the working directory of the application. By default, the Working directory field shows the project root folder. To change this predefined setting, specify the path to the desired folder or choose a previously used folder from the list. |
Environment variables | In this field, specify the environment variables for the Node.js executable file, if applicable. Click Browse to the right of the field and configure a list of variables in the Environment Variables dialog, that opens:
The definitions of variables are displayed in the Environment variables read-only field with semicolons as separators, for example:
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Mocha package | In this field, specify the Mocha installation home /npm/node_modules/mocha. If you installed Mocha regularly through the Node Package Manager, IntelliJ IDEA detects the Mocha installation home itself. Alternatively, type the path to executable file manually, or click Browse and select the location in the dialog, that opens. |
User interface | From this list, choose the interface according to which the tests in the test folder are written. IntelliJ IDEA will recognize only tests that comply with the chosen interface. If during test execution IntelliJ IDEA runs against a test of another interface, the test session will be canceled with an error. This means that all the tests in the specified test folder must be written according to the same interface and this interface must be chosen from the list. |
Extra Mocha options | In this field, specify additional Mocha command-line options. For example, add a As a result, any test in the current run configuration restarts automatically on changing the related source code, without clicking the Rerun button . |
Tests | In this area, specify the tests to be executed. The available options are:
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Common settings
When you edit a run configuration (but not a run configuration template), you can specify the following options:
Item | Description |
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Name | Specify a name for the run/debug configuration to quickly identify it when editing or running the configuration, for example, from the Run popup Alt+Shift+F10. |
Store as project file | Save the file with the run configuration settings to share it with other team members. The default location is .idea/runConfigurations. However, if you do not want to share the .idea directory, you can save the configuration to any other directory within the project. By default, it is disabled, and IntelliJ IDEA stores run configuration settings in .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 |
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Alt+Insert | Create a run/debug configuration. | |
Alt+Delete | Delete the selected run/debug configuration. Note that you cannot delete default configurations. | |
Ctrl+D | Create a copy of the selected run/debug configuration. Note that you create copies of default configurations. | |
The button is displayed only when you select a temporary configuration. Click this button to save a temporary configuration as permanent. | ||
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 , and specify the 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 or and buttons. To remove grouping, select a folder and click . | ||
Click this button to sort configurations in the alphabetical order. |
Before launch
In this area, you can specify tasks to be performed before starting the selected run/debug configuration. The tasks are performed in the order they appear in the list.
Item | Shortcut | Description |
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Alt+Insert | Click this icon to add one of the following available tasks:
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Alt+Delete | Click this icon to remove the selected task from the list. | |
Enter | Click this icon to edit the selected task. Make the necessary changes in the dialog that opens. | |
/ | 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 | By default this checkbox is selected and the Run or the Debug tool window opens when you start the run/debug configuration. Otherwise, if the checkbox is cleared, the tool window is hidden. However, when the configuration is running, you can open the corresponding tool window for it yourself by pressing Alt+4 or Alt+5. |