Using a Plug-in

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Using a Plug-in
Concordia Compiler uses plug-ins for:
1.setting the testing environment up;
2.generating and executing test scripts;
3.converting and reporting test results.
Every plug-in can generate test scripts for a different testing framework or programming language.
Plug-ins
Name (concordialang-...)
Target platform
Needs Java?
RTS*
​codeceptjs-testcafe​
web
No
No
​codeceptjs-playwright​
web
No
No
​codeceptjs-webdriverio​
web
Yes, Java 8+
Yes
​codeceptjs-appium​
Android, iOS, Windows
It depends**
Yes
Notes:
(*) RTS means "Requires a Testing Server", that is, if it requires a testing server to run the test scripts (e.g., Selenium Standalone).
(**) Appium requires Java for testing web-based mobile applications or using  the Android SDK.
codeceptjs-testcafe uses the frameworks CodeceptJS and TestCafé, and works with probably any browser.
codeceptjs-playwright uses the frameworks CodeceptJS and Playwright, 
requires Node 10.14 or above, and works with Chromium, Firefox, and Safari.
codeceptjs-webdriverio uses the frameworks CodeceptJS and WebDriverIO, and works with Chrome, Firefox, IE, and Edge.
codeceptjs-appium uses the frameworks CodeceptJS and Appium, and requires some additional configuration to work.
codeceptjs-testcafe and codeceptjs-playwright are only available for Concordia Compiler 2 or above.
Installation
Use --plugin-install plus the plug-in name. Example:
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npx concordia --plugin-install codeceptjs-testcafe
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You can also use NPM for installing a plug-in. In this case, you must prefix the plug-in name withconcordialang- . Example: npm install -D concordialang-codeceptjs-testcafe.
Upgrade
Just uninstall the plug-in and then install it again. Example:
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npx concordia --plugin-uninstall codeceptjs-playwright
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npx concordia --plugin-install codeceptjs-playwright 
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How to use a plug-in
Concordia has the following plug-in commands:
plugin-install to install a plug-in
plugin-uninstallto uninstall a plug-in
plugin-serve to start a testing server using the plug-in
plugin to use a plug-in
plugin-info to show information about a plug-in
plugin-list to list installed plug-ins
All but the latter command (plugin-list) require a plug-in name.
👉 Whether you have a configuration file with the property plugin defined, you can omit the plugin name from a command. Example:
.concordiarc
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{
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  "plugin": "codeceptjs-playwright"
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}
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​
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Commonly used commands
You can omit the argument <plugin> if you have a configuration file with the property "plugin" defined.
Starting a testing server
Some plug-ins (WebDriverIO, Appium) require a testing server to execute test scripts. A testing server controls a browser or an emulator during tests.
We recommend to open a new terminal/console and then start the testing server:
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npx concordia --plugin-serve <plugin>
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Naturally, you must replace <plugin> with the plugin name. 
The testing server will remain open. To stop it later, type Ctrl + C.
Generating and executing test scripts
Whether your plug-in needs a testing server, start it beforehand.
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npx concordia --plugin <plugin>
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Generating test scripts without executing them
You can use --no-run to avoid running test scripts and use --no-result to avoid reading the last report with test results. Test scripts will be generated but not executed.
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npx concordia --plugin <plugin> --no-run --no-result
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Executing existing test scripts (without generating them)
You can use --no-script to avoid generating test scripts. Only existing test scripts will be executed.
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npx concordia --plugin <plugin> --no-script
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See also
​Configuration file​
​Commands for plug-ins​
​Creating a plug-in​
​
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Contents
Commonly used commands
Starting a testing server
Generating and executing test scripts
Generating test scripts without executing them
Executing existing test scripts (without generating them)