Update tap anywhere to cancel selection test

Focus system removed the feature that tapping anywhere will clear focus.
And after this change, the SelectionContainer only cancels the selection
when user click inside the SelectionContainer.

This CL updates the test case so that it matches the current behavior.

Bug: 179770443
Test: ./gradlew compose:foundation:foundation:connectedAndroidTest
Change-Id: I8247fda1acb54c72685eee60e010ce47712c007f

Author: Haoyu Zhang

compose/foundation/foundation/src/androidAndroidTest/kotlin/androidx/compose/foundation/text/selection/SelectionContainerFocusTest.kt

@@ -36,6 +36,7 @@ import androidx.compose.ui.platform.LocalHapticFeedback
 import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.platform.LocalTextToolbar
 import androidx.compose.ui.platform.testTag
+import androidx.compose.ui.test.center
 import androidx.compose.ui.test.click
 import androidx.compose.ui.test.hasTestTag
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
@@ -49,7 +50,6 @@ import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import androidx.test.filters.FlakyTest
 import androidx.test.filters.LargeTest
 import com.google.common.truth.Truth.assertThat
 import com.nhaarman.mockitokotlin2.mock
@@ -78,11 +78,9 @@ class SelectionContainerFocusTest {
 
     private val hapticFeedback = mock<HapticFeedback>()
 
-    @FlakyTest(bugId = 179770443)
     @Test
-    fun click_anywhere_to_cancel() {
+    fun tap_to_cancel() {
         // Setup. Long press to create a selection.
-        // A reasonable number.
         createSelectionContainer()
         // Touch position. In this test, each character's width and height equal to fontSize.
         // Position is computed so that (position, position) is the center of the first character.
@@ -95,14 +93,9 @@ class SelectionContainerFocusTest {
             assertThat(selection1.value).isNotNull()
         }
 
-        // Touch position. In this test, each character's width and height equal to fontSize.
-        // Position is computed so that (position, position) is the center of the first character.
-        val positionInBox = with(Density(view.context)) {
-            boxSize.toPx() / 2
-        }
         // Act.
         rule.onNode(hasTestTag("box"))
-            .performGesture { click(Offset(x = positionInBox, y = positionInBox)) }
+            .performGesture { click(center) }
 
         // Assert.
         rule.runOnIdle {
@@ -118,7 +111,6 @@ class SelectionContainerFocusTest {
     @Test
     fun select_anotherContainer_cancelOld() {
         // Setup. Long press to create a selection.
-        // A reasonable number.
         createSelectionContainer()
         // Touch position. In this test, each character's width and height equal to fontSize.
         // Position is computed so that (position, position) is the center of the first character.
@@ -168,16 +160,19 @@ class SelectionContainerFocusTest {
                             selection1.value = it
                         }
                     ) {
-                        CoreText(
-                            AnnotatedString(textContent),
-                            Modifier.fillMaxWidth(),
-                            style = TextStyle(fontFamily = fontFamily, fontSize = fontSize),
-                            softWrap = true,
-                            overflow = TextOverflow.Clip,
-                            maxLines = Int.MAX_VALUE,
-                            inlineContent = mapOf(),
-                            onTextLayout = {}
-                        )
+                        Column {
+                            CoreText(
+                                AnnotatedString(textContent),
+                                Modifier.fillMaxWidth(),
+                                style = TextStyle(fontFamily = fontFamily, fontSize = fontSize),
+                                softWrap = true,
+                                overflow = TextOverflow.Clip,
+                                maxLines = Int.MAX_VALUE,
+                                inlineContent = mapOf(),
+                                onTextLayout = {}
+                            )
+                            Box(Modifier.size(boxSize, boxSize).testTag("box"))
+                        }
                     }
 
                     SelectionContainer(
@@ -200,8 +195,6 @@ class SelectionContainerFocusTest {
                             onTextLayout = {}
                         )
                     }
-
-                    Box(Modifier.size(boxSize, boxSize).testTag("box"))
                 }
             }
         }