IssueTracker

DESCRIBE THE ISSUE IN DETAIL:

TouchInjectionScope.swipe[...] does nothing in ComposeContentTestRule.performTouchInput().

STEPS TO REPRODUCE:

Simple example:

import android.util.Log
import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.gestures.draggable
import androidx.compose.foundation.gestures.rememberDraggableState
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.testTag
import androidx.compose.ui.test.junit4.createComposeRule
import androidx.compose.ui.test.onNodeWithTag
import androidx.compose.ui.test.performTouchInput
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.test.espresso.action.ViewActions.swipeLeft
import org.junit.Rule
import org.junit.Test

class DummyTest {

  @get:Rule
  val testRule = createComposeRule()

  @Test
  fun testOne () {

    val dth = 100f

    testRule.setContent {
      var bg by remember { mutableStateOf(Color.White) }
      var drag = 0f

      MaterialTheme {
        Box (modifier = Modifier.background(bg).padding(20.dp).width(dth.dp * 3)
          .draggable (
            orientation = Orientation.Horizontal,
            state = rememberDraggableState { delta ->
              drag += delta        // Breakpoint #1
              if (drag > dth) {
                bg = Color.Yellow
                drag = 0f
              }
              if (drag < -dth) {
                bg = Color.Cyan
                drag = 0f
              }
            }
          ).testTag("draggable")
        ) {
          Text ("Hello World", color = Color.Black, fontSize = 20.sp)
        }
      }
    }

    testRule.waitForIdle()
    testRule.onNodeWithTag("draggable").assertExists().performTouchInput {
      swipeLeft()                            // Breakpoint #2
      Log.w("test", "swiped left")
    }
    testRule.waitUntil(30000) { false }
  }
}

"Breakpoint #2" fires, and the log entry is made, after the test loads, but the color change and "Breakpoint #1" only fire when the component is physically swiped.

• Studio Build: AI-241.18034.62.2411.12071903
• Version of Gradle Plugin: 8.5.1
• Version of Gradle: 8.7
• JVM: 17.0.11
• OS: Linux 6.9.6-100.fc39.x86_64 amd64