/
AccessibilityCheckResultUtils.java
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/
AccessibilityCheckResultUtils.java
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/*
* Copyright (C) 2014 Google Inc.
*
* 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.google.android.apps.common.testing.accessibility.framework;
import static org.hamcrest.Matchers.equalTo;
import android.view.View;
import com.google.android.apps.common.testing.accessibility.framework.AccessibilityCheckResult.AccessibilityCheckResultType;
import com.google.android.apps.common.testing.accessibility.framework.checks.ClickableSpanCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.DuplicateClickableBoundsCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.DuplicateSpeakableTextCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.EditableContentDescCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.RedundantDescriptionCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.SpeakableTextPresentCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.TextContrastCheck;
import com.google.android.apps.common.testing.accessibility.framework.checks.TouchTargetSizeCheck;
import com.google.android.apps.common.testing.accessibility.framework.uielement.ViewHierarchyElement;
import com.google.common.collect.ImmutableBiMap;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.Matchers;
import org.hamcrest.TypeSafeMatcher;
/** Utility class for dealing with {@code AccessibilityCheckResult}s */
public final class AccessibilityCheckResultUtils {
/**
* Mapping from the names of obsolete AccessibilityViewHierarchyCheck to the replacement
* AccessibilityHierarchyCheck.
*/
private static final ImmutableBiMap<String, Class<?>> VIEW_CHECK_ALIASES =
ImmutableBiMap.<String, Class<?>>builder()
.put("ClickableSpanViewCheck", ClickableSpanCheck.class)
.put("DuplicateClickableBoundsViewCheck", DuplicateClickableBoundsCheck.class)
.put("DuplicateSpeakableTextViewHierarchyCheck", DuplicateSpeakableTextCheck.class)
.put("EditableContentDescViewCheck", EditableContentDescCheck.class)
.put("RedundantContentDescViewCheck", RedundantDescriptionCheck.class)
.put("SpeakableTextPresentViewCheck", SpeakableTextPresentCheck.class)
.put("TextContrastViewCheck", TextContrastCheck.class)
.put("TouchTargetSizeViewCheck", TouchTargetSizeCheck.class)
.buildOrThrow();
private AccessibilityCheckResultUtils() {
}
/**
* Takes a list of {@code AccessibilityCheckResult}s and returns a list with only results obtained
* from the given {@code AccessibilityCheck}.
* <p>
* NOTE: This method explicitly does not take subtypes of {@code checkClass} into account when
* filtering results.
*
* @param results a list of {@code AccessibilityCheckResult}s
* @param checkClass the {@code Class} of the {@code AccessibilityCheck} to get results for
* @return a list of {@code AccessibilityCheckResult}s obtained from the given
* {@code AccessibilityCheck}.
*/
public static <T extends AccessibilityCheckResult> List<T> getResultsForCheck(
Iterable<T> results, Class<? extends AccessibilityCheck> checkClass) {
return AccessibilityCheckResultBaseUtils.getResultsForCheck(results, checkClass);
}
/**
* Filters {@link AccessibilityCheckResult}s and returns a list with only results which match the
* given {@link AccessibilityCheckResultType}.
*
* @param results an {@link Iterable} of {@link AccessibilityCheckResult}s
* @param type the {@link AccessibilityCheckResultType} for the results to be returned
* @return a list of {@link AccessibilityCheckResult}s with the given
* {@link AccessibilityCheckResultType}.
*/
public static <T extends AccessibilityCheckResult> List<T> getResultsForType(
Iterable<T> results, AccessibilityCheckResultType type) {
return AccessibilityCheckResultBaseUtils.getResultsForType(results, type);
}
/**
* Filters {@code AccessibilityCheckResult}s and returns a list with only results which match the
* given {@link AccessibilityCheckResultType}s.
*
* @param results an {@link Iterable} of {@code AccessibilityCheckResult}s
* @param types a {@link Set} of {@link AccessibilityCheckResultType}s that should be returned in
* the filtered list
* @return a {@link List} containing only the {@link AccessibilityHierarchyCheckResult}s from
* {@code results} which are of a type included in {@code types}
*/
public static <T extends AccessibilityCheckResult> List<T> getResultsForTypes(
Iterable<T> results, Set<AccessibilityCheckResultType> types) {
return AccessibilityCheckResultBaseUtils.getResultsForTypes(results, types);
}
/**
* Takes a list of {@code AccessibilityCheckResult}s and returns a list with only results
* pertaining to the given {@code View}.
*
* @param results a list of {@code AccessibilityCheckResult}s
* @param view the {@code View} to get results for
* @return a list of {@code AccessibilityCheckResult}s pertaining to the given {@code View}.
*/
public static List<AccessibilityViewCheckResult> getResultsForView(
Iterable<AccessibilityViewCheckResult> results, View view) {
List<AccessibilityViewCheckResult> resultsForView = new ArrayList<>();
for (AccessibilityViewCheckResult result : results) {
if (result.getView() == view) {
resultsForView.add(result);
}
}
return resultsForView;
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityCheckResult} whose result type matches the
* given matcher for {@link AccessibilityCheckResultType}.
*
* @param typeMatcher a {@code Matcher} for an {@code AccessibilityCheckResultType}
* @return a {@code Matcher} for an {@code AccessibilityCheckResult}
*/
public static Matcher<AccessibilityCheckResult> matchesTypes(
final Matcher<? super AccessibilityCheckResultType> typeMatcher) {
return AccessibilityCheckResultBaseUtils.matchesTypes(typeMatcher);
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityCheckResult} whose source check class is
* equal to the given check class.
*
* <p>This is syntactic sugar for {@code matchesChecks(equalTo(checkClass))}.
*/
public static Matcher<AccessibilityCheckResult> matchesCheck(
Class<? extends AccessibilityCheck> checkClass) {
return matchesChecks(equalTo(checkClass));
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityCheckResult} whose source check class
* matches the given matcher.
* <p>
* Note: Do not use {@link Matchers#is} for a {@link Class}, as the deprecated form will match
* only objects of that class instead of the class object itself. Use {@link Matchers#equalTo}
* instead.
*
* @param classMatcher a {@code Matcher} for a {@code Class<? extends AccessibilityCheck>}.
* Note: strict typing not enforced for Java 7 compatibility
* @return a {@code Matcher} for a {@code AccessibilityCheckResult}
*/
public static Matcher<AccessibilityCheckResult> matchesChecks(final Matcher<?> classMatcher) {
return AccessibilityCheckResultBaseUtils.matchesChecks(classMatcher);
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityCheckResult} whose source check class has
* a simple name that matches the given matcher for a {@code String}.
*
* @param classNameMatcher a {@code Matcher} for a {@code String}
* @return a {@code Matcher} for an {@code AccessibilityCheckResult}
*/
public static Matcher<AccessibilityCheckResult> matchesCheckNames(
final Matcher<? super String> classNameMatcher) {
return AccessibilityCheckResultBaseUtils.matchesCheckNames(
classNameMatcher, VIEW_CHECK_ALIASES);
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityViewCheckResult} whose view matches the
* given matcher for a {@link View}.
*
* @param viewMatcher a {@code Matcher} for a {@code View}
* @return a {@code Matcher} for an {@code AccessibilityViewCheckResult}
*/
public static Matcher<AccessibilityViewCheckResult> matchesViews(
final Matcher<? super View> viewMatcher) {
return new TypeSafeMemberMatcher<AccessibilityViewCheckResult>("View", viewMatcher) {
@Override
public boolean matchesSafely(AccessibilityViewCheckResult result) {
View view = result.getView();
return (view != null) && viewMatcher.matches(view);
}
};
}
/**
* Returns a {@link Matcher} for an {@link AccessibilityViewCheckResult} whose element matches the
* given matcher for a {@link ViewHierarchyElement}.
*
* @param elementMatcher a {@code Matcher} for a {@code ViewHierarchyElement}
* @return a {@code Matcher} for an {@code AccessibilityViewCheckResult}
*/
public static Matcher<AccessibilityViewCheckResult> matchesElements(
final Matcher<? super ViewHierarchyElement> elementMatcher) {
return new TypeSafeMemberMatcher<AccessibilityViewCheckResult>("Element", elementMatcher) {
@Override
public boolean matchesSafely(AccessibilityViewCheckResult result) {
ViewHierarchyElement element = result.getElement();
return (element != null) && elementMatcher.matches(element);
}
};
}
/**
* Returns a {@link Matcher} that matches if the given Integer matcher matches the {@link
* AccessibilityViewCheckResult#getResultId()} of the examined {@code
* AccessibilityViewCheckResult}.
*
* @param resultIdMatcher a {@code Matcher} for result ID values
* @return a {@code Matcher} for an {@code AccessibilityViewCheckResult}
*/
public static Matcher<AccessibilityViewCheckResult> matchesResultId(
final Matcher<Integer> resultIdMatcher) {
return new TypeSafeMemberMatcher<AccessibilityViewCheckResult>("result id", resultIdMatcher) {
@Override
public boolean matchesSafely(AccessibilityViewCheckResult result) {
return resultIdMatcher.matches(result.getResultId());
}
};
}
private abstract static class TypeSafeMemberMatcher<T> extends TypeSafeMatcher<T> {
private final String memberDescription;
private final Matcher<?> matcher;
public TypeSafeMemberMatcher(String member, Matcher<?> matcher) {
memberDescription = String.format("with %s: ", member);
this.matcher = matcher;
}
@Override
public void describeTo(Description description) {
description.appendText(memberDescription);
matcher.describeTo(description);
}
}
}