content: /*
   * Copyright 2015, 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 com.example.android.testing.espresso.CustomMatcherSample;
  
  import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
  import static androidx.test.espresso.Espresso.onView;
  import static androidx.test.espresso.action.ViewActions.click;
  import static androidx.test.espresso.action.ViewActions.closeSoftKeyboard;
  import static androidx.test.espresso.action.ViewActions.typeText;
  import static androidx.test.espresso.assertion.ViewAssertions.matches;
  import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
  import static androidx.test.espresso.matcher.ViewMatchers.withId;
  import static androidx.test.espresso.matcher.ViewMatchers.withText;
  import static org.hamcrest.Matchers.anyOf;
  import static org.hamcrest.Matchers.endsWith;
  import static org.hamcrest.Matchers.not;
  
  import androidx.test.ext.junit.rules.ActivityScenarioRule;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.filters.LargeTest;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.robolectric.annotation.LooperMode;
  import org.robolectric.annotation.TextLayoutMode;
  
  /**
   * Tests for {@link MainActivity} showcasing the use of custom matchers (see
   * {@link HintMatcher#withHint}).
   */
  @RunWith(AndroidJUnit4.class)
  @LargeTest
  // Configure Robolectric to use the more realistic text layout and threading model.
  // These annotations can be removed once this is default behavior in Robolectric
  @TextLayoutMode(TextLayoutMode.Mode.REALISTIC)
  @LooperMode(LooperMode.Mode.PAUSED)
  public class HintMatchersTest {
  
      private static final String INVALID_STRING_TO_BE_TYPED = "Earl Grey";
  
      private static final String COFFEE_ENDING = "coffee?";
  
      private static final String COFFEE_INVALID_ENDING = "tea?";
  
      // A valid string with a valid ending
      private String mStringWithValidEnding;
  
      // A valid string from the coffee preparations
      private String mValidStringToBeTyped;
  
      /**
       * {@link ActivityScenarioRule} will create and launch of the activity for you.
       */
      @Rule public ActivityScenarioRule<MainActivity> activityScenarioRule =
          new ActivityScenarioRule<MainActivity>(MainActivity.class);
  
      @Before
      public void initValidStrings() {
          // Produce a string with valid ending.
          mStringWithValidEnding = "Random " + MainActivity.VALID_ENDING;
  
          // Get one of the available coffee preparations.
          mValidStringToBeTyped = MainActivity.COFFEE_PREPARATIONS.get(0);
      }
  
      /**
       * Uses a custom matcher {@link HintMatcher#withHint}, with a {@link String} as the argument.
       */
      @Test
      public void hint_isDisplayedInEditText() {
          String hintText = getApplicationContext().getResources().getString(R.string.hint);
  
          onView(withId(R.id.editText)).check(matches(HintMatcher.withHint(hintText)));
      }
  
      /**
       * Same as above but using a {@link org.hamcrest.Matcher} as the argument.
       */
      @SuppressWarnings("unchecked")
      @Test
      public void hint_endsWith() {
          // This check will probably fail if the app is localized and the language is changed. Avoid
          // string literals in code!
          onView(withId(R.id.editText)).check(matches(HintMatcher.withHint(anyOf(
                  endsWith(COFFEE_ENDING), endsWith(COFFEE_INVALID_ENDING)))));
      }
  
      @Test
      public void editText_canBeTypedInto() {
          onView(withId(R.id.editText))
                  .perform(typeText(mValidStringToBeTyped), closeSoftKeyboard())
                  .check(matches(withText(mValidStringToBeTyped)));
      }
  
      @Test
      public void validation_resultIsOneOfTheValidStrings() {
          // Type a valid string and click on the button.
          onView(withId(R.id.editText))
                  .perform(typeText(mValidStringToBeTyped), closeSoftKeyboard());
          onView(withId(R.id.button)).perform(click());
  
          // Check that the correct sign is displayed.
          onView(withId(R.id.inputValidationSuccess)).check(matches(isDisplayed()));
          onView(withId(R.id.inputValidationError)).check(matches(not(isDisplayed())));
      }
  
      @Test
      public void validation_resultHasCorrectEnding() {
          // Type a string with a valid ending and click on the button.
          onView(withId(R.id.editText))
                  .perform(typeText(mStringWithValidEnding), closeSoftKeyboard());
          onView(withId(R.id.button)).perform(click());
  
          // Check that the correct sign is displayed.
          onView(withId(R.id.inputValidationSuccess)).check(matches(isDisplayed()));
          onView(withId(R.id.inputValidationError)).check(matches(not(isDisplayed())));
      }
  
      @Test
      public void validation_resultIsIncorrect() {
          // Type a valid string and click on the button.
          onView(withId(R.id.editText))
                  .perform(typeText(INVALID_STRING_TO_BE_TYPED), closeSoftKeyboard());
          onView(withId(R.id.button)).perform(click());
  
          // Check that the correct sign is displayed.
          onView(withId(R.id.inputValidationError)).check(matches(isDisplayed()));
          onView(withId(R.id.inputValidationSuccess)).check(matches(not(isDisplayed())));
      }
  }