wear/compose/compose-material/src/androidAndroidTest/kotlin/androidx/wear/compose/material/ButtonTest.kt - platform/frameworks/support - Git at Google

 /*
  * Copyright 2021 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package androidx.wear.compose.material

 import android.os.Build
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.testutils.assertShape
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.compositeOver
 import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.semantics.SemanticsProperties
 import androidx.compose.ui.test.SemanticsMatcher
 import androidx.compose.ui.test.assert
 import androidx.compose.ui.test.assertHasClickAction
 import androidx.compose.ui.test.assertHeightIsEqualTo
 import androidx.compose.ui.test.assertIsEnabled
 import androidx.compose.ui.test.assertIsNotEnabled
 import androidx.compose.ui.test.assertWidthIsEqualTo
 import androidx.compose.ui.test.captureToImage
 import androidx.compose.ui.test.hasText
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import androidx.compose.ui.test.junit4.createComposeRule
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.onNodeWithText
 import androidx.compose.ui.test.performClick
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.test.filters.SdkSuppress
 import org.junit.Assert.assertEquals
 import org.junit.Rule
 import org.junit.Test

 class ButtonBehaviourTest {
  @get:Rule
  val rule = createComposeRule()

  @Test
  fun supports_testtag_on_button_for_image() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertExists()
  }

  @Test
  fun supports_testtag_on_button_for_text() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertExists()
  }

  @Test
  fun supports_testtag_on_compactbutton_for_image() {
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertExists()
  }

  @Test
  fun supports_testtag_on_compactbutton_for_text() {
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertExists()
  }

  @Test
  fun has_clickaction_when_enabled_for_image() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
  }

  @Test
  fun has_clickaction_when_enabled_for_text() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
  }

  @Test
  fun has_clickaction_when_disabled_for_image() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
  }

  @Test
  fun has_clickaction_when_disabled_for_text() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
  }

  @Test
  fun is_correctly_enabled_when_enabled_equals_true() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertIsEnabled()
  }

  @Test
  fun is_correctly_disabled_when_enabled_equals_false() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).assertIsNotEnabled()
  }

  @Test
  fun responds_to_click_when_enabled_on_compact_button() {
  var clicked = false

  rule.setContentWithTheme {
  CompactButton(
  onClick = { clicked = true },
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).performClick()

  rule.runOnIdle {
  assertEquals(true, clicked)
  }
  }

  @Test
  fun responds_to_click_when_enabled_on_button() {
  var clicked = false

  rule.setContentWithTheme {
  Button(
  onClick = { clicked = true },
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG).performClick()

  rule.runOnIdle {
  assertEquals(true, clicked)
  }
  }

  @Test
  fun does_not_respond_to_click_when_disabled_on_compact_button() {
  var clicked = false

  rule.setContentWithTheme {
  CompactButton(
  onClick = { clicked = true },
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).performClick()

  rule.runOnIdle {
  assertEquals(false, clicked)
  }
  }

  @Test
  fun does_not_respond_to_click_when_disabled_on_button() {
  var clicked = false

  rule.setContentWithTheme {
  Button(
  onClick = { clicked = true },
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG).performClick()

  rule.runOnIdle {
  assertEquals(false, clicked)
  }
  }

  @Test
  fun has_role_button_for_compact_image() {
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  TestImage()
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .assert(
  SemanticsMatcher.expectValue(
  SemanticsProperties.Role,
  Role.Button
  )
  )
  }

  @Test
  fun has_role_button_for_text() {
  rule.setContentWithTheme {
  Button(
  onClick = {},
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .assert(
  SemanticsMatcher.expectValue(
  SemanticsProperties.Role,
  Role.Button
  )
  )
  }

  @Test
  fun contains_text_for_button() {
  val text = "Test"
  rule.setContentWithTheme {
  Button(
  onClick = {},
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithText(text).assertExists()
  }

  @Test
  fun contains_text_for_compact_button() {
  val text = "Test"
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  ) {
  Text("Test")
  }
  }

  rule.onNodeWithText(text).assertExists()
  }

  @Test
  fun matches_has_text_for_button() {
  val text = "Test"
  rule.setContentWithTheme {
  Button(
  onClick = {},
  ) {
  Text("Test")
  }
  }

  rule.onNode(hasText(text)).assertExists()
  }

  @Test
  fun matches_has_text_for_compactbutton() {
  val text = "Test"
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  ) {
  Text("Test")
  }
  }

  rule.onNode(hasText(text)).assertExists()
  }

  @Test
  fun is_circular_under_ltr_for_button() =
  rule.isCircular(LayoutDirection.Ltr) {
  Button(
  modifier = Modifier.testTag(TEST_TAG),
  onClick = {},
  ) {
  // omit content to allow us to validate the shape by pixel checking.
  }
  }

  @Test
  fun is_circular_under_rtl_for_button() =
  rule.isCircular(LayoutDirection.Rtl) {
  Button(
  modifier = Modifier.testTag(TEST_TAG),
  onClick = {},
  ) {
  // omit content to allow us to validate the shape by pixel checking.
  }
  }
 }

 class ButtonSizeTest {
  @get:Rule
  val rule = createComposeRule()

  @Test
  fun gives_compactbutton_correct_tapsize() {
  rule.verifyTapSize(TapSize.Small) {
  CompactButton(
  onClick = {},
  ) {
  Text("xs")
  }
  }
  }

  @Test
  fun gives_button_correct_tapsize() {
  rule.verifyTapSize(TapSize.Default) {
  Button(
  onClick = {},
  ) {
  Text("abc")
  }
  }
  }

  @Test
  fun gives_small_button_correct_tapsize() {
  rule.verifyTapSize(TapSize.Small) {
  Button(
  onClick = {},
  modifier = Modifier.size(ButtonDefaults.SmallButtonSize)
  ) {
  TestImage()
  }
  }
  }

  @Test
  fun gives_large_button_correct_tapsize() {
  rule.verifyTapSize(TapSize.Large) {
  Button(
  onClick = {},
  modifier = Modifier.size(ButtonDefaults.LargeButtonSize)
  ) {
  TestImage()
  }
  }
  }
 }

 class ButtonColorTest {
  @get:Rule
  val rule = createComposeRule()

  @Test
  fun gives_enabled_button_primary_colors() =
  verifyButtonColors(
  Status.Enabled,
  { ButtonDefaults.primaryButtonColors() },
  { MaterialTheme.colors.primary },
  { MaterialTheme.colors.onPrimary },
  )

  @Test
  fun gives_enabled_compact_button_primary_colors() =
  verifyCompactButtonColors(
  Status.Enabled,
  { ButtonDefaults.primaryButtonColors() },
  { MaterialTheme.colors.primary },
  { MaterialTheme.colors.onPrimary },
  )

  @Test
  fun gives_disabled_button_primary_colors() =
  verifyButtonColors(
  Status.Disabled,
  { ButtonDefaults.primaryButtonColors() },
  { MaterialTheme.colors.primary },
  { MaterialTheme.colors.onPrimary },
  )

  @Test
  fun gives_disabled_compact_button_primary_colors() =
  verifyCompactButtonColors(
  Status.Disabled,
  { ButtonDefaults.primaryButtonColors() },
  { MaterialTheme.colors.primary },
  { MaterialTheme.colors.onPrimary },
  )

  @Test
  fun gives_enabled_button_secondary_colors() =
  verifyButtonColors(
  Status.Enabled,
  { ButtonDefaults.secondaryButtonColors() },
  { MaterialTheme.colors.surface },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_enabled_compact_button_secondary_colors() =
  verifyCompactButtonColors(
  Status.Enabled,
  { ButtonDefaults.secondaryButtonColors() },
  { MaterialTheme.colors.surface },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_disabled_button_secondary_colors() =
  verifyButtonColors(
  Status.Disabled,
  { ButtonDefaults.secondaryButtonColors() },
  { MaterialTheme.colors.surface },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_disabled_compact_button_secondary_colors() =
  verifyCompactButtonColors(
  Status.Disabled,
  { ButtonDefaults.secondaryButtonColors() },
  { MaterialTheme.colors.surface },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_enabled_button_icon_colors() =
  verifyButtonColors(
  Status.Enabled,
  { ButtonDefaults.iconButtonColors() },
  { Color.Transparent },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_enabled_compact_button_icon_colors() =
  verifyCompactButtonColors(
  Status.Enabled,
  { ButtonDefaults.iconButtonColors() },
  { Color.Transparent },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_disabled_button_icon_colors() =
  verifyButtonColors(
  Status.Disabled,
  { ButtonDefaults.iconButtonColors() },
  { Color.Transparent },
  { MaterialTheme.colors.onSurface },
  )

  @Test
  fun gives_disabled_compact_button_icon_colors() =
  verifyCompactButtonColors(
  Status.Disabled,
  { ButtonDefaults.iconButtonColors() },
  { Color.Transparent },
  { MaterialTheme.colors.onSurface },
  )

  @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
  @Test
  fun allows_button_custom_enabled_background_color_override() {
  val overrideColor = Color.Yellow
  rule.setContentWithTheme {
  Box(modifier = Modifier.fillMaxSize()) {
  Button(
  onClick = {},
  colors = ButtonDefaults.buttonColors(backgroundColor = overrideColor),
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  }
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertContainsColor(overrideColor, 50.0f)
  }

  @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
  @Test
  fun allows_compactbutton_custom_enabled_background_color_override() {
  val overrideColor = Color.Yellow
  rule.setContentWithTheme {
  Box(modifier = Modifier.fillMaxSize()) {
  CompactButton(
  onClick = {},
  colors = ButtonDefaults.buttonColors(backgroundColor = overrideColor),
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  }
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertContainsColor(overrideColor, 25.0f)
  }

  @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
  @Test
  fun allows_button_custom_disabled_background_color_override() {
  val overrideColor = Color.Yellow
  rule.setContentWithTheme {
  Box(modifier = Modifier.fillMaxSize()) {
  Button(
  onClick = {},
  colors = ButtonDefaults.buttonColors(disabledBackgroundColor = overrideColor),
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  }
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertContainsColor(overrideColor, 50.0f)
  }

  @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
  @Test
  fun allows_compactbutton_custom_disabled_background_color_override() {
  val overrideColor = Color.Yellow
  rule.setContentWithTheme {
  Box(modifier = Modifier.fillMaxSize()) {
  CompactButton(
  onClick = {},
  colors = ButtonDefaults.buttonColors(disabledBackgroundColor = overrideColor),
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  }
  }
  }

  rule.onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertContainsColor(overrideColor, 25.0f)
  }

  @Test
  fun allows_button_custom_enabled_content_color_override() {
  val overrideColor = Color.Red
  var actualContentColor = Color.Transparent
  rule.setContentWithTheme {
  Button(
  onClick = {},
  colors = ButtonDefaults.buttonColors(contentColor = overrideColor),
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualContentColor = LocalContentColor.current
  }
  }

  assertEquals(overrideColor, actualContentColor)
  }

  @Test
  fun allows_compactbutton_custom_enabled_content_color_override() {
  val overrideColor = Color.Red
  var actualContentColor = Color.Transparent
  rule.setContentWithTheme {
  CompactButton(
  onClick = {},
  colors = ButtonDefaults.buttonColors(contentColor = overrideColor),
  enabled = true,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualContentColor = LocalContentColor.current
  }
  }

  assertEquals(overrideColor, actualContentColor)
  }

  @Test
  fun allows_button_custom_disabled_content_color_override() {
  val overrideColor = Color.Yellow
  var actualContentColor = Color.Transparent
  rule.setContentWithTheme {
  Button(
  onClick = {},
  colors = ButtonDefaults.buttonColors(disabledContentColor = overrideColor),
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualContentColor = LocalContentColor.current
  }
  }

  assertEquals(overrideColor, actualContentColor)
  }

  @Test
  fun allows_compactbutton_custom_disabled_content_color_override() {
  val overrideColor = Color.Yellow
  var actualContentColor = Color.Transparent
  rule.setContentWithTheme {
  Button(
  onClick = {},
  colors = ButtonDefaults.buttonColors(disabledContentColor = overrideColor),
  enabled = false,
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualContentColor = LocalContentColor.current
  }
  }

  assertEquals(overrideColor, actualContentColor)
  }

  fun verifyButtonColors(
  status: Status,
  buttonColors: @Composable () -> ButtonColors,
  backgroundColor: @Composable () -> Color,
  contentColor: @Composable () -> Color,
  ) {
  verifyColors(
  status,
  backgroundColor,
  contentColor,
  ) {
  var actualColor = Color.Transparent
  Button(
  onClick = {},
  colors = buttonColors(),
  enabled = status.enabled(),
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualColor = LocalContentColor.current
  }
  return@verifyColors actualColor
  }
  }

  fun verifyCompactButtonColors(
  status: Status,
  buttonColors: @Composable () -> ButtonColors,
  backgroundColor: @Composable () -> Color,
  contentColor: @Composable () -> Color,
  ) {
  verifyColors(
  status,
  backgroundColor,
  contentColor,
  ) {
  var actualColor = Color.Transparent
  CompactButton(
  onClick = {},
  backgroundPadding = 0.dp,
  colors = buttonColors(),
  enabled = status.enabled(),
  modifier = Modifier.testTag(TEST_TAG)
  ) {
  actualColor = LocalContentColor.current
  }
  return@verifyColors actualColor
  }
  }

  @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
  private fun verifyColors(
  status: Status,
  backgroundColor: @Composable () -> Color,
  contentColor: @Composable () -> Color,
  threshold: Float = 50.0f,
  content: @Composable () -> Color,
  ) {
  val testBackground = Color.White
  var expectedBackground = Color.Transparent
  var expectedContent = Color.Transparent
  var actualContent = Color.Transparent

  rule.setContentWithTheme {
  if (status.enabled()) {
  expectedBackground = backgroundColor()
  expectedContent = contentColor()
  } else {
  expectedBackground =
  backgroundColor()
  .copy(alpha = ContentAlpha.disabled).compositeOver(testBackground)
  expectedContent = contentColor().copy(alpha = ContentAlpha.disabled)
  }
  Box(
  modifier = Modifier
  .fillMaxSize()
  .background(testBackground)
  ) {
  actualContent = content()
  }
  }

  assertEquals(expectedContent, actualContent)

  rule.onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertContainsColor(
  if (expectedBackground != Color.Transparent) expectedBackground else testBackground,
  threshold
  )
  }
 }

 class ButtonTextStyleTest {
  @get:Rule
  val rule = createComposeRule()

  @Test
  fun gives_button_correct_font() {
  var actualTextStyle = TextStyle.Default
  var expectedTextStyle = TextStyle.Default

  rule.setContentWithTheme {
  expectedTextStyle = MaterialTheme.typography.button
  Button(
  onClick = {},
  ) {
  actualTextStyle = LocalTextStyle.current
  }
  }

  assertEquals(expectedTextStyle, actualTextStyle)
  }

  @Test
  fun gives_compactbutton_correct_font() {
  var actualTextStyle = TextStyle.Default
  var expectedTextStyle = TextStyle.Default

  rule.setContentWithTheme {
  expectedTextStyle = MaterialTheme.typography.button
  CompactButton(
  onClick = {},
  ) {
  actualTextStyle = LocalTextStyle.current
  }
  }

  assertEquals(expectedTextStyle, actualTextStyle)
  }
 }

 private fun ComposeContentTestRule.verifyTapSize(
  expected: TapSize,
  content: @Composable () -> Unit
 ) {
  setContentWithThemeForSizeAssertions {
  content()
  }
  .assertHeightIsEqualTo(expected.size)
  .assertWidthIsEqualTo(expected.size)
 }

 @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
 private fun ComposeContentTestRule.isCircular(
  layoutDirection: LayoutDirection,
  padding: Dp = 0.dp,
  content: @Composable () -> Unit
 ) {
  var background = Color.Transparent
  var surface = Color.Transparent
  setContentWithTheme {
  background = MaterialTheme.colors.primary
  surface = MaterialTheme.colors.surface
  CompositionLocalProvider(LocalLayoutDirection provides layoutDirection) {
  Box(
  Modifier
  .padding(padding)
  .background(surface)
  ) {
  content()
  }
  }
  }

  onNodeWithTag(TEST_TAG)
  .captureToImage()
  .assertShape(
  density = density,
  shape = CircleShape,
  horizontalPadding = padding,
  verticalPadding = padding,
  backgroundColor = surface,
  shapeColor = background
  )
 }

 internal enum class TapSize(val size: Dp) {
  Small(48.dp),
  Default(52.dp),
  Large(60.dp)
 }

 enum class Status {
  Enabled,
  Disabled;

  fun enabled() = this == Enabled
 }
	/*
	* Copyright 2021 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package androidx.wear.compose.material

	import android.os.Build
	import androidx.compose.foundation.background
	import androidx.compose.foundation.layout.Box
	import androidx.compose.foundation.layout.fillMaxSize
	import androidx.compose.foundation.layout.padding
	import androidx.compose.foundation.layout.size
	import androidx.compose.foundation.shape.CircleShape
	import androidx.compose.runtime.Composable
	import androidx.compose.runtime.CompositionLocalProvider
	import androidx.compose.testutils.assertShape
	import androidx.compose.ui.Modifier
	import androidx.compose.ui.graphics.Color
	import androidx.compose.ui.graphics.compositeOver
	import androidx.compose.ui.platform.LocalLayoutDirection
	import androidx.compose.ui.platform.testTag
	import androidx.compose.ui.semantics.Role
	import androidx.compose.ui.semantics.SemanticsProperties
	import androidx.compose.ui.test.SemanticsMatcher
	import androidx.compose.ui.test.assert
	import androidx.compose.ui.test.assertHasClickAction
	import androidx.compose.ui.test.assertHeightIsEqualTo
	import androidx.compose.ui.test.assertIsEnabled
	import androidx.compose.ui.test.assertIsNotEnabled
	import androidx.compose.ui.test.assertWidthIsEqualTo
	import androidx.compose.ui.test.captureToImage
	import androidx.compose.ui.test.hasText
	import androidx.compose.ui.test.junit4.ComposeContentTestRule
	import androidx.compose.ui.test.junit4.createComposeRule
	import androidx.compose.ui.test.onNodeWithTag
	import androidx.compose.ui.test.onNodeWithText
	import androidx.compose.ui.test.performClick
	import androidx.compose.ui.text.TextStyle
	import androidx.compose.ui.unit.Dp
	import androidx.compose.ui.unit.LayoutDirection
	import androidx.compose.ui.unit.dp
	import androidx.test.filters.SdkSuppress
	import org.junit.Assert.assertEquals
	import org.junit.Rule
	import org.junit.Test

	class ButtonBehaviourTest {
	@get:Rule
	val rule = createComposeRule()

	@Test
	fun supports_testtag_on_button_for_image() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertExists()
	}

	@Test
	fun supports_testtag_on_button_for_text() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertExists()
	}

	@Test
	fun supports_testtag_on_compactbutton_for_image() {
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertExists()
	}

	@Test
	fun supports_testtag_on_compactbutton_for_text() {
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertExists()
	}

	@Test
	fun has_clickaction_when_enabled_for_image() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
	}

	@Test
	fun has_clickaction_when_enabled_for_text() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
	}

	@Test
	fun has_clickaction_when_disabled_for_image() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
	}

	@Test
	fun has_clickaction_when_disabled_for_text() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertHasClickAction()
	}

	@Test
	fun is_correctly_enabled_when_enabled_equals_true() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertIsEnabled()
	}

	@Test
	fun is_correctly_disabled_when_enabled_equals_false() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).assertIsNotEnabled()
	}

	@Test
	fun responds_to_click_when_enabled_on_compact_button() {
	var clicked = false

	rule.setContentWithTheme {
	CompactButton(
	onClick = { clicked = true },
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).performClick()

	rule.runOnIdle {
	assertEquals(true, clicked)
	}
	}

	@Test
	fun responds_to_click_when_enabled_on_button() {
	var clicked = false

	rule.setContentWithTheme {
	Button(
	onClick = { clicked = true },
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG).performClick()

	rule.runOnIdle {
	assertEquals(true, clicked)
	}
	}

	@Test
	fun does_not_respond_to_click_when_disabled_on_compact_button() {
	var clicked = false

	rule.setContentWithTheme {
	CompactButton(
	onClick = { clicked = true },
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).performClick()

	rule.runOnIdle {
	assertEquals(false, clicked)
	}
	}

	@Test
	fun does_not_respond_to_click_when_disabled_on_button() {
	var clicked = false

	rule.setContentWithTheme {
	Button(
	onClick = { clicked = true },
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG).performClick()

	rule.runOnIdle {
	assertEquals(false, clicked)
	}
	}

	@Test
	fun has_role_button_for_compact_image() {
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	TestImage()
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.assert(
	SemanticsMatcher.expectValue(
	SemanticsProperties.Role,
	Role.Button
	)
	)
	}

	@Test
	fun has_role_button_for_text() {
	rule.setContentWithTheme {
	Button(
	onClick = {},
	modifier = Modifier.testTag(TEST_TAG)
	) {
	Text("Test")
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.assert(
	SemanticsMatcher.expectValue(
	SemanticsProperties.Role,
	Role.Button
	)
	)
	}

	@Test
	fun contains_text_for_button() {
	val text = "Test"
	rule.setContentWithTheme {
	Button(
	onClick = {},
	) {
	Text("Test")
	}
	}

	rule.onNodeWithText(text).assertExists()
	}

	@Test
	fun contains_text_for_compact_button() {
	val text = "Test"
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	) {
	Text("Test")
	}
	}

	rule.onNodeWithText(text).assertExists()
	}

	@Test
	fun matches_has_text_for_button() {
	val text = "Test"
	rule.setContentWithTheme {
	Button(
	onClick = {},
	) {
	Text("Test")
	}
	}

	rule.onNode(hasText(text)).assertExists()
	}

	@Test
	fun matches_has_text_for_compactbutton() {
	val text = "Test"
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	) {
	Text("Test")
	}
	}

	rule.onNode(hasText(text)).assertExists()
	}

	@Test
	fun is_circular_under_ltr_for_button() =
	rule.isCircular(LayoutDirection.Ltr) {
	Button(
	modifier = Modifier.testTag(TEST_TAG),
	onClick = {},
	) {
	// omit content to allow us to validate the shape by pixel checking.
	}
	}

	@Test
	fun is_circular_under_rtl_for_button() =
	rule.isCircular(LayoutDirection.Rtl) {
	Button(
	modifier = Modifier.testTag(TEST_TAG),
	onClick = {},
	) {
	// omit content to allow us to validate the shape by pixel checking.
	}
	}
	}

	class ButtonSizeTest {
	@get:Rule
	val rule = createComposeRule()

	@Test
	fun gives_compactbutton_correct_tapsize() {
	rule.verifyTapSize(TapSize.Small) {
	CompactButton(
	onClick = {},
	) {
	Text("xs")
	}
	}
	}

	@Test
	fun gives_button_correct_tapsize() {
	rule.verifyTapSize(TapSize.Default) {
	Button(
	onClick = {},
	) {
	Text("abc")
	}
	}
	}

	@Test
	fun gives_small_button_correct_tapsize() {
	rule.verifyTapSize(TapSize.Small) {
	Button(
	onClick = {},
	modifier = Modifier.size(ButtonDefaults.SmallButtonSize)
	) {
	TestImage()
	}
	}
	}

	@Test
	fun gives_large_button_correct_tapsize() {
	rule.verifyTapSize(TapSize.Large) {
	Button(
	onClick = {},
	modifier = Modifier.size(ButtonDefaults.LargeButtonSize)
	) {
	TestImage()
	}
	}
	}
	}

	class ButtonColorTest {
	@get:Rule
	val rule = createComposeRule()

	@Test
	fun gives_enabled_button_primary_colors() =
	verifyButtonColors(
	Status.Enabled,
	{ ButtonDefaults.primaryButtonColors() },
	{ MaterialTheme.colors.primary },
	{ MaterialTheme.colors.onPrimary },
	)

	@Test
	fun gives_enabled_compact_button_primary_colors() =
	verifyCompactButtonColors(
	Status.Enabled,
	{ ButtonDefaults.primaryButtonColors() },
	{ MaterialTheme.colors.primary },
	{ MaterialTheme.colors.onPrimary },
	)

	@Test
	fun gives_disabled_button_primary_colors() =
	verifyButtonColors(
	Status.Disabled,
	{ ButtonDefaults.primaryButtonColors() },
	{ MaterialTheme.colors.primary },
	{ MaterialTheme.colors.onPrimary },
	)

	@Test
	fun gives_disabled_compact_button_primary_colors() =
	verifyCompactButtonColors(
	Status.Disabled,
	{ ButtonDefaults.primaryButtonColors() },
	{ MaterialTheme.colors.primary },
	{ MaterialTheme.colors.onPrimary },
	)

	@Test
	fun gives_enabled_button_secondary_colors() =
	verifyButtonColors(
	Status.Enabled,
	{ ButtonDefaults.secondaryButtonColors() },
	{ MaterialTheme.colors.surface },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_enabled_compact_button_secondary_colors() =
	verifyCompactButtonColors(
	Status.Enabled,
	{ ButtonDefaults.secondaryButtonColors() },
	{ MaterialTheme.colors.surface },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_disabled_button_secondary_colors() =
	verifyButtonColors(
	Status.Disabled,
	{ ButtonDefaults.secondaryButtonColors() },
	{ MaterialTheme.colors.surface },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_disabled_compact_button_secondary_colors() =
	verifyCompactButtonColors(
	Status.Disabled,
	{ ButtonDefaults.secondaryButtonColors() },
	{ MaterialTheme.colors.surface },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_enabled_button_icon_colors() =
	verifyButtonColors(
	Status.Enabled,
	{ ButtonDefaults.iconButtonColors() },
	{ Color.Transparent },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_enabled_compact_button_icon_colors() =
	verifyCompactButtonColors(
	Status.Enabled,
	{ ButtonDefaults.iconButtonColors() },
	{ Color.Transparent },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_disabled_button_icon_colors() =
	verifyButtonColors(
	Status.Disabled,
	{ ButtonDefaults.iconButtonColors() },
	{ Color.Transparent },
	{ MaterialTheme.colors.onSurface },
	)

	@Test
	fun gives_disabled_compact_button_icon_colors() =
	verifyCompactButtonColors(
	Status.Disabled,
	{ ButtonDefaults.iconButtonColors() },
	{ Color.Transparent },
	{ MaterialTheme.colors.onSurface },
	)

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	@Test
	fun allows_button_custom_enabled_background_color_override() {
	val overrideColor = Color.Yellow
	rule.setContentWithTheme {
	Box(modifier = Modifier.fillMaxSize()) {
	Button(
	onClick = {},
	colors = ButtonDefaults.buttonColors(backgroundColor = overrideColor),
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	}
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertContainsColor(overrideColor, 50.0f)
	}

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	@Test
	fun allows_compactbutton_custom_enabled_background_color_override() {
	val overrideColor = Color.Yellow
	rule.setContentWithTheme {
	Box(modifier = Modifier.fillMaxSize()) {
	CompactButton(
	onClick = {},
	colors = ButtonDefaults.buttonColors(backgroundColor = overrideColor),
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	}
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertContainsColor(overrideColor, 25.0f)
	}

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	@Test
	fun allows_button_custom_disabled_background_color_override() {
	val overrideColor = Color.Yellow
	rule.setContentWithTheme {
	Box(modifier = Modifier.fillMaxSize()) {
	Button(
	onClick = {},
	colors = ButtonDefaults.buttonColors(disabledBackgroundColor = overrideColor),
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	}
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertContainsColor(overrideColor, 50.0f)
	}

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	@Test
	fun allows_compactbutton_custom_disabled_background_color_override() {
	val overrideColor = Color.Yellow
	rule.setContentWithTheme {
	Box(modifier = Modifier.fillMaxSize()) {
	CompactButton(
	onClick = {},
	colors = ButtonDefaults.buttonColors(disabledBackgroundColor = overrideColor),
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	}
	}
	}

	rule.onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertContainsColor(overrideColor, 25.0f)
	}

	@Test
	fun allows_button_custom_enabled_content_color_override() {
	val overrideColor = Color.Red
	var actualContentColor = Color.Transparent
	rule.setContentWithTheme {
	Button(
	onClick = {},
	colors = ButtonDefaults.buttonColors(contentColor = overrideColor),
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualContentColor = LocalContentColor.current
	}
	}

	assertEquals(overrideColor, actualContentColor)
	}

	@Test
	fun allows_compactbutton_custom_enabled_content_color_override() {
	val overrideColor = Color.Red
	var actualContentColor = Color.Transparent
	rule.setContentWithTheme {
	CompactButton(
	onClick = {},
	colors = ButtonDefaults.buttonColors(contentColor = overrideColor),
	enabled = true,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualContentColor = LocalContentColor.current
	}
	}

	assertEquals(overrideColor, actualContentColor)
	}

	@Test
	fun allows_button_custom_disabled_content_color_override() {
	val overrideColor = Color.Yellow
	var actualContentColor = Color.Transparent
	rule.setContentWithTheme {
	Button(
	onClick = {},
	colors = ButtonDefaults.buttonColors(disabledContentColor = overrideColor),
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualContentColor = LocalContentColor.current
	}
	}

	assertEquals(overrideColor, actualContentColor)
	}

	@Test
	fun allows_compactbutton_custom_disabled_content_color_override() {
	val overrideColor = Color.Yellow
	var actualContentColor = Color.Transparent
	rule.setContentWithTheme {
	Button(
	onClick = {},
	colors = ButtonDefaults.buttonColors(disabledContentColor = overrideColor),
	enabled = false,
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualContentColor = LocalContentColor.current
	}
	}

	assertEquals(overrideColor, actualContentColor)
	}

	fun verifyButtonColors(
	status: Status,
	buttonColors: @Composable () -> ButtonColors,
	backgroundColor: @Composable () -> Color,
	contentColor: @Composable () -> Color,
	) {
	verifyColors(
	status,
	backgroundColor,
	contentColor,
	) {
	var actualColor = Color.Transparent
	Button(
	onClick = {},
	colors = buttonColors(),
	enabled = status.enabled(),
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualColor = LocalContentColor.current
	}
	return@verifyColors actualColor
	}
	}

	fun verifyCompactButtonColors(
	status: Status,
	buttonColors: @Composable () -> ButtonColors,
	backgroundColor: @Composable () -> Color,
	contentColor: @Composable () -> Color,
	) {
	verifyColors(
	status,
	backgroundColor,
	contentColor,
	) {
	var actualColor = Color.Transparent
	CompactButton(
	onClick = {},
	backgroundPadding = 0.dp,
	colors = buttonColors(),
	enabled = status.enabled(),
	modifier = Modifier.testTag(TEST_TAG)
	) {
	actualColor = LocalContentColor.current
	}
	return@verifyColors actualColor
	}
	}

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	private fun verifyColors(
	status: Status,
	backgroundColor: @Composable () -> Color,
	contentColor: @Composable () -> Color,
	threshold: Float = 50.0f,
	content: @Composable () -> Color,
	) {
	val testBackground = Color.White
	var expectedBackground = Color.Transparent
	var expectedContent = Color.Transparent
	var actualContent = Color.Transparent

	rule.setContentWithTheme {
	if (status.enabled()) {
	expectedBackground = backgroundColor()
	expectedContent = contentColor()
	} else {
	expectedBackground =
	backgroundColor()
	.copy(alpha = ContentAlpha.disabled).compositeOver(testBackground)
	expectedContent = contentColor().copy(alpha = ContentAlpha.disabled)
	}
	Box(
	modifier = Modifier
	.fillMaxSize()
	.background(testBackground)
	) {
	actualContent = content()
	}
	}

	assertEquals(expectedContent, actualContent)

	rule.onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertContainsColor(
	if (expectedBackground != Color.Transparent) expectedBackground else testBackground,
	threshold
	)
	}
	}

	class ButtonTextStyleTest {
	@get:Rule
	val rule = createComposeRule()

	@Test
	fun gives_button_correct_font() {
	var actualTextStyle = TextStyle.Default
	var expectedTextStyle = TextStyle.Default

	rule.setContentWithTheme {
	expectedTextStyle = MaterialTheme.typography.button
	Button(
	onClick = {},
	) {
	actualTextStyle = LocalTextStyle.current
	}
	}

	assertEquals(expectedTextStyle, actualTextStyle)
	}

	@Test
	fun gives_compactbutton_correct_font() {
	var actualTextStyle = TextStyle.Default
	var expectedTextStyle = TextStyle.Default

	rule.setContentWithTheme {
	expectedTextStyle = MaterialTheme.typography.button
	CompactButton(
	onClick = {},
	) {
	actualTextStyle = LocalTextStyle.current
	}
	}

	assertEquals(expectedTextStyle, actualTextStyle)
	}
	}

	private fun ComposeContentTestRule.verifyTapSize(
	expected: TapSize,
	content: @Composable () -> Unit
	) {
	setContentWithThemeForSizeAssertions {
	content()
	}
	.assertHeightIsEqualTo(expected.size)
	.assertWidthIsEqualTo(expected.size)
	}

	@SdkSuppress(minSdkVersion = Build.VERSION_CODES.O)
	private fun ComposeContentTestRule.isCircular(
	layoutDirection: LayoutDirection,
	padding: Dp = 0.dp,
	content: @Composable () -> Unit
	) {
	var background = Color.Transparent
	var surface = Color.Transparent
	setContentWithTheme {
	background = MaterialTheme.colors.primary
	surface = MaterialTheme.colors.surface
	CompositionLocalProvider(LocalLayoutDirection provides layoutDirection) {
	Box(
	Modifier
	.padding(padding)
	.background(surface)
	) {
	content()
	}
	}
	}

	onNodeWithTag(TEST_TAG)
	.captureToImage()
	.assertShape(
	density = density,
	shape = CircleShape,
	horizontalPadding = padding,
	verticalPadding = padding,
	backgroundColor = surface,
	shapeColor = background
	)
	}

	internal enum class TapSize(val size: Dp) {
	Small(48.dp),
	Default(52.dp),
	Large(60.dp)
	}

	enum class Status {
	Enabled,
	Disabled;

	fun enabled() = this == Enabled
	}