Alexander Maryanovsky
6 months ago
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GitHub
2 changed files with 1 additions and 79 deletions
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# UI Testing |
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The API for unit testing in Compose for Desktop is nearly identical to the [Jetpack Compose Android testing API](https://developer.android.com/jetpack/compose/testing). We highly recommended reading that first before moving on to this tutorial. |
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## Setting up |
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To start using the testing API, you will need to add the dependency on `compose.uiTestJUnit4` to your `build.gradle` file and create the directory for your tests. |
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If the module is desktop-only (`kotlin("jvm")` is applied), add the dependency via: |
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``` kotlin |
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dependencies { |
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testImplementation(compose.desktop.uiTestJUnit4) |
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testImplementation(compose.desktop.currentOs) |
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} |
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``` |
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and the directory for tests will be `src/test/kotlin` |
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If the module is multiplatform (`kotlin(“multiplatform”)` is applied), add it via: |
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``` kotlin |
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kotlin { |
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sourceSets { |
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val desktopTest by getting { |
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dependencies { |
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implementation(compose.desktop.uiTestJUnit4) |
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implementation(compose.desktop.currentOs) |
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} |
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} |
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} |
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} |
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``` |
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And the directory for tests will be `src/desktopTest/kotlin` |
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## Creating your first test |
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In the tests directory, create a file named `ExampleTest.kt` and paste this code into it: |
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```kotlin |
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import androidx.compose.material.* |
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import androidx.compose.runtime.* |
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import androidx.compose.ui.Modifier |
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import androidx.compose.ui.test.* |
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import androidx.compose.ui.platform.testTag |
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import androidx.compose.ui.test.junit4.createComposeRule |
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import org.junit.Rule |
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import org.junit.Test |
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class ExampleTest { |
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@get:Rule |
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val rule = createComposeRule() |
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@Test |
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fun myTest(){ |
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rule.setContent { |
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var text by remember { mutableStateOf("Hello") } |
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Text( |
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text = text, |
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modifier = Modifier.testTag("text") |
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) |
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Button( |
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onClick = { text = "Compose" }, |
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modifier = Modifier.testTag("button") |
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){ |
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Text("Click me") |
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} |
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} |
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rule.onNodeWithTag("text").assertTextEquals("Hello") |
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rule.onNodeWithTag("button").performClick() |
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rule.onNodeWithTag("text").assertTextEquals("Compose") |
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} |
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} |
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``` |
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Now you can run the test by either clicking ![run](https://github.com/JetBrains/compose-multiplatform/assets/5963351/2eac4041-757e-48b0-9dc2-baef82f21a7b) button in your IDE, or from the command line with |
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``` |
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./gradlew test |
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``` |
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