Hi. How would I write a cucumber test for my compo...
# compose-desktopl
Lindsay Peters
12/22/2023, 4:15 AMHi. How would I write a cucumber test for my compose-desktop application? The only examples of any testing I've seen so far are unit tests using createComposeRule().
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Alexander Maryanovsky
12/22/2023, 4:23 AMWhat is a cucumber test?
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Lindsay Peters
12/22/2023, 4:27 AMIt's a framework for black-box (BDD) testing your application.
https://cucumber.io/
Each application feature you want to test is described by an executable "scenario", e.g. here are two scenarios
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Feature: Show a list of cases
Scenario: Should show the list of cases that have been stored by the server
Given a list of cases with the following names is stored on the server:
| Case1 |
| Case2 |
And I start the client application
Then I should see the following cases in the case list:
| Case1 |
| Case2 |
And stop the client application
Scenario: Should be able to select the last in a long list of cases
Given a list of 1000 cases is stored on the server
And I start the client application
When I select case Case_1000
Then I should see the case Case_1000 as the current case
And stop the client applicationa
Alexander Maryanovsky
12/22/2023, 4:39 AMHow does cucumber control the tested app, e.g. press a button?
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Lindsay Peters
12/22/2023, 4:46 AMIf the UI is implemented as a web app, then the steps are defined using Selenium or Playwright. If the UI is a thick client app, say in Swing, then the steps are defined using java Robot directly, or what we use is the assertj-swing framework https://joel-costigliola.github.io/assertj/assertj-swing.html which put button/key presses etc on the EDT and similarly finds and reads the state of components using the EDT. I'm looking for an equivalent form of testing for compose-desktop.
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Alexander Maryanovsky
12/22/2023, 4:49 AMRobot should work with Compose.
Alexander Maryanovsky
12/22/2023, 4:49 AMBut you won’t be able to find Swing/AWT components
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Lindsay Peters
12/22/2023, 4:53 AMRobot can perform mouse clicks and key presses on a composable, but how can you get the screen location of the composable button in order to click it, or the position of a TextField so you can click it and make it focusable for then entering text?
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Alexander Maryanovsky
12/22/2023, 4:56 AMYou can use the semantics tree to find nodes in the UI. https://developer.android.com/jetpack/compose/semantics
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Lindsay Peters
12/22/2023, 5:01 AMThanks, but is the only way to get access to the semantics true by using composeTestRule, i.e. in a JUnit test?
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Alexander Maryanovsky
12/22/2023, 5:06 AMI don’t think we’re currently exposing it outside of tests.
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Lindsay Peters
12/22/2023, 5:15 AMI guess I'm looking for a way to use the node matchers and assertions of composeTestRule, but outside the JUnit framework. In particular, in a higher-level test framework like cucumber.
I'd also like to be able to find the semantic tree if the composables are in a ComposePanel, whether using composeTestRule/Junit or not.
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Alexander Maryanovsky
12/22/2023, 5:23 AMTake a look at runComposeUiTest
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Lindsay Peters
12/22/2023, 5:28 AMWill do, thanks for your time and help.
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