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Adding tests for the Exposed Dropdown Menu.
PiperOrigin-RevId: 246509842
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‎testing/java/com/google/android/material/testapp/AndroidManifest.xml‎

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android:name=".ExpandableTransformationActivity"
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android:theme="@style/Theme.AppCompat.NoActionBar"/>
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<activity
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android:name=".ExposedDropdownMenuActivity"
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android:theme="@style/Theme.MaterialComponents.NoActionBar"
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android:exported="false"/>
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<activity
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android:name=".NavigationViewActivity"
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android:theme="@style/Theme.AppCompat.NoActionBar"/>

‎testing/java/com/google/android/material/testapp/ExposedDropdownMenuActivity.java‎

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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.material.testapp;
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import android.os.Bundle;
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import com.google.android.material.testapp.base.BaseTestActivity;
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import android.widget.ArrayAdapter;
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import android.widget.AutoCompleteTextView;
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/** Test activity that has the different variations of the Exposed Dropdown Menu. */
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public class ExposedDropdownMenuActivity extends BaseTestActivity {
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@Override
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protected int getContentViewLayoutResId() {
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return R.layout.exposed_dropdown_menu;
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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ArrayAdapter<String> adapter =
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new ArrayAdapter<>(
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this,
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R.layout.exposed_dropdown_popup_item,
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getResources().getStringArray(R.array.exposed_dropdown_content));
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AutoCompleteTextView editTextFilledExposedDropdown = findViewById(R.id.edittext_filled);
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editTextFilledExposedDropdown.setAdapter(adapter);
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AutoCompleteTextView editTextFilledEditableExposedDropdown =
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findViewById(R.id.edittext_filled_editable);
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editTextFilledEditableExposedDropdown.setAdapter(adapter);
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}
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}

‎testing/java/com/google/android/material/testapp/res/layout/exposed_dropdown_menu.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright (C) 2019 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:orientation="vertical"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<com.google.android.material.textfield.TextInputLayout
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android:id="@+id/filled_dropdown"
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style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.ExposedDropdownMenu"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:hint="@string/textinput_hint"
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app:errorEnabled="true">
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<AutoCompleteTextView
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android:id="@+id/edittext_filled"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:editable="false"
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android:imeOptions="flagNoExtractUi"/>
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</com.google.android.material.textfield.TextInputLayout>
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<com.google.android.material.textfield.TextInputLayout
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android:id="@+id/filled_editable_dropdown"
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style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.ExposedDropdownMenu"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:hint="@string/textinput_hint"
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app:errorEnabled="true">
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<AutoCompleteTextView
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android:id="@+id/edittext_filled_editable"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:imeOptions="flagNoExtractUi"/>
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</com.google.android.material.textfield.TextInputLayout>
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</LinearLayout>

‎testing/java/com/google/android/material/testapp/res/layout/exposed_dropdown_popup_item.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright 2019 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<TextView xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/dropdown_item"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:padding="16dp"
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android:ellipsize="end"
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android:singleLine="true"
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android:textAppearance="?attr/textAppearanceSubtitle1"/>

‎testing/java/com/google/android/material/testapp/res/values/strings.xml‎

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<string name="textinput_helper">Helper text to the user</string>
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<string name="textinput_helper_not_enabled">Helper text to the user, helper not enabled</string>
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<string name="textinput_custom_end_icon">Custom end icon</string>
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<string-array name="exposed_dropdown_content">
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<item>Item 1</item>
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<item>Item 2</item>
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<item>Item 3</item>
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<item>Item 4</item>
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</string-array>
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</resources>

‎tests/javatests/com/google/android/material/testutils/TextInputLayoutActions.java‎

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import android.text.method.PasswordTransformationMethod;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.AutoCompleteTextView;
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import android.widget.EditText;
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import androidx.test.espresso.UiController;
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import androidx.test.espresso.ViewAction;
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}
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};
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}
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/** Skips any animations on the layout. */
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public static ViewAction skipAnimations() {
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return new ViewAction() {
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@Override
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public Matcher<View> getConstraints() {
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return ViewMatchers.isAssignableFrom(TextInputLayout.class);
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}
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@Override
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public String getDescription() {
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return "Skips any animations.";
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}
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@Override
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public void perform(UiController uiController, View view) {
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view.jumpDrawablesToCurrentState();
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}
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};
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}
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/** Shows the dropdown popup. */
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public static ViewAction showDropdown() {
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return new ViewAction() {
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@Override
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public Matcher<View> getConstraints() {
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return ViewMatchers.isAssignableFrom(TextInputLayout.class);
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}
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@Override
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public String getDescription() {
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return "Shows the dropdown popup.";
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}
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@Override
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public void perform(UiController uiController, View view) {
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TextInputLayout item = (TextInputLayout) view;
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((AutoCompleteTextView) item.getEditText()).showDropDown();
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view.jumpDrawablesToCurrentState();
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CheckableImageButton iconView = item.findViewById(R.id.text_input_end_icon);
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iconView.setChecked(true);
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}
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};
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}
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}

‎tests/javatests/com/google/android/material/textfield/ExposedDropdownMenuTest.java‎

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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.material.textfield;
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import static com.google.android.material.testutils.TestUtilsActions.waitFor;
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import static com.google.android.material.testutils.TextInputLayoutActions.clickIcon;
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import static com.google.android.material.testutils.TextInputLayoutActions.showDropdown;
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import static com.google.android.material.testutils.TextInputLayoutActions.skipAnimations;
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import static com.google.android.material.testutils.TextInputLayoutMatchers.endIconHasContentDescription;
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import static androidx.test.espresso.Espresso.onView;
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import static androidx.test.espresso.action.ViewActions.clearText;
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import static androidx.test.espresso.action.ViewActions.click;
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import static androidx.test.espresso.action.ViewActions.typeText;
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import static androidx.test.espresso.action.ViewActions.typeTextIntoFocusedView;
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import static androidx.test.espresso.assertion.ViewAssertions.matches;
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import static androidx.test.espresso.contrib.AccessibilityChecks.accessibilityAssertion;
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import static androidx.test.espresso.matcher.ViewMatchers.isDescendantOfA;
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import static androidx.test.espresso.matcher.ViewMatchers.isRoot;
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import static androidx.test.espresso.matcher.ViewMatchers.withId;
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import static org.hamcrest.MatcherAssert.assertThat;
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import static org.hamcrest.Matchers.allOf;
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import static org.hamcrest.core.Is.is;
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import android.app.Activity;
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import com.google.android.material.testapp.ExposedDropdownMenuActivity;
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import com.google.android.material.testapp.R;
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import android.widget.AutoCompleteTextView;
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import androidx.test.filters.MediumTest;
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import androidx.test.rule.ActivityTestRule;
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import androidx.test.runner.AndroidJUnit4;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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@MediumTest
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@RunWith(AndroidJUnit4.class)
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public class ExposedDropdownMenuTest {
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@Rule
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public final ActivityTestRule<ExposedDropdownMenuActivity> activityTestRule =
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new ActivityTestRule<>(ExposedDropdownMenuActivity.class);
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private static final String INPUT_TEXT = "I";
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@Test
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public void testEndIconClickShowsDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled);
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onView(withId(R.id.filled_dropdown)).perform(clickIcon(true));
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onView(withId(R.id.filled_dropdown)).perform(skipAnimations());
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assertThat(editText.isPopupShowing(), is(true));
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}
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@Test
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public void testEndIconClickHidesDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled);
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onView(withId(R.id.filled_dropdown)).perform(showDropdown());
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onView(withId(R.id.filled_dropdown)).perform(clickIcon(true));
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onView(withId(R.id.filled_dropdown)).perform(skipAnimations());
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assertThat(editText.isPopupShowing(), is(false));
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}
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@Test
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public void testLayoutClickShowsDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled);
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onView(withId(R.id.filled_dropdown)).perform(click());
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onView(withId(R.id.filled_dropdown)).perform(skipAnimations());
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assertThat(editText.isPopupShowing(), is(true));
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}
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@Test
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public void testLayoutClickHidesDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled);
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onView(withId(R.id.filled_dropdown)).perform(showDropdown());
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onView(withId(R.id.filled_dropdown)).perform(click());
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onView(withId(R.id.filled_dropdown)).perform(skipAnimations());
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assertThat(editText.isPopupShowing(), is(false));
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}
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@Test
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public void testTextInputShowsDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled_editable);
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// Makes sure dropdown is not showing before entering input.
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onView(withId(R.id.filled_editable_dropdown)).perform(clickIcon(true));
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onView(withId(R.id.filled_editable_dropdown)).perform(clickIcon(true));
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onView(withId(R.id.filled_editable_dropdown)).perform(skipAnimations());
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onView(isRoot()).perform(waitFor(2000));
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onView(withId(R.id.edittext_filled_editable)).perform(typeTextIntoFocusedView(INPUT_TEXT));
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onView(isRoot()).perform(waitFor(2000));
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assertThat(editText.isPopupShowing(), is(true));
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}
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@Test
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public void testClearingTextInputHidesDropdownPopup() {
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final Activity activity = activityTestRule.getActivity();
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final AutoCompleteTextView editText = activity.findViewById(R.id.edittext_filled_editable);
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onView(withId(R.id.edittext_filled_editable)).perform(typeText(INPUT_TEXT));
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onView(withId(R.id.edittext_filled_editable)).perform(clearText());
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assertThat(editText.isPopupShowing(), is(false));
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}
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@Test
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public void testEndIconHasDefaultContentDescription() {
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onView(withId(R.id.filled_dropdown)).check(matches(endIconHasContentDescription()));
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}
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@Test
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public void testEndIconIsAccessible() {
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onView(allOf(withId(R.id.text_input_end_icon), isDescendantOfA(withId(R.id.filled_dropdown))))
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.check(accessibilityAssertion());
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}
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}

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