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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.base.test.transit;
import static androidx.test.espresso.Espresso.onView;
import static androidx.test.espresso.assertion.ViewAssertions.doesNotExist;
import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
import static org.hamcrest.CoreMatchers.allOf;
import static org.hamcrest.CoreMatchers.any;
import android.content.res.Resources;
import android.view.View;
import androidx.test.espresso.AmbiguousViewMatcherException;
import androidx.test.espresso.NoMatchingRootException;
import androidx.test.espresso.NoMatchingViewException;
import androidx.test.espresso.UiController;
import androidx.test.espresso.ViewAction;
import androidx.test.espresso.ViewInteraction;
import androidx.test.platform.app.InstrumentationRegistry;
import org.hamcrest.Matcher;
import org.hamcrest.StringDescription;
import java.util.ArrayList;
import java.util.regex.Pattern;
/** {@link Condition}s related to Android {@link View}s. */
public class ViewConditions {
/** Fulfilled when a single matching View exists and is displayed. */
public static class DisplayedCondition extends ExistsCondition {
public DisplayedCondition(Matcher<View> matcher) {
super(allOf(matcher, isDisplayed()));
}
}
/**
* Fulfilled when a single matching View exists and is displayed, but ignored if |gate| returns
* true.
*/
public static class GatedDisplayedCondition extends InstrumentationThreadCondition {
private final DisplayedCondition mDisplayedCondition;
private final Condition mGate;
public GatedDisplayedCondition(Matcher<View> matcher, Condition gate) {
super();
mDisplayedCondition = new DisplayedCondition(matcher);
mGate = gate;
}
@Override
public ConditionStatus check() throws Exception {
ConditionStatus gateStatus = mGate.check();
String gateMessage = gateStatus.getMessageAsGate();
if (!gateStatus.isFulfilled()) {
return fulfilled(gateMessage);
}
ConditionStatus status = mDisplayedCondition.check();
status.amendMessage(gateMessage);
return status;
}
@Override
public String buildDescription() {
return String.format(
"%s (if %s)", mDisplayedCondition.buildDescription(), mGate.buildDescription());
}
}
/** Fulfilled when a single matching View exists. */
public static class ExistsCondition extends InstrumentationThreadCondition {
private final Matcher<View> mMatcher;
private View mViewMatched;
public ExistsCondition(Matcher<View> matcher) {
super();
this.mMatcher = matcher;
}
@Override
public String buildDescription() {
return "View: " + ViewConditions.createMatcherDescription(mMatcher);
}
@Override
public ConditionStatus check() {
ViewInteraction viewInteraction = onView(mMatcher);
String[] message = new String[1];
try {
viewInteraction.perform(
new ViewAction() {
@Override
public Matcher<View> getConstraints() {
return any(View.class);
}
@Override
public String getDescription() {
return "check exists and consistent";
}
@Override
public void perform(UiController uiController, View view) {
if (mViewMatched != null && mViewMatched != view) {
message[0] =
String.format(
"Matched a different view, was %s, now %s",
mViewMatched, view);
}
mViewMatched = view;
}
});
return fulfilled(message[0]);
} catch (NoMatchingViewException
| NoMatchingRootException
| AmbiguousViewMatcherException e) {
if (mViewMatched != null) {
throw new IllegalStateException(
String.format(
"Had matched a view (%s), but now got %s",
mViewMatched, e.getClass().getSimpleName()),
e);
}
return notFulfilled(e.getClass().getSimpleName());
}
}
}
/** Fulfilled when no matching Views exist and are displayed. */
public static class NotDisplayedAnymoreCondition extends InstrumentationThreadCondition {
private final Matcher<View> mMatcher;
public NotDisplayedAnymoreCondition(Matcher<View> matcher) {
super();
mMatcher = allOf(matcher, isDisplayed());
}
@Override
public String buildDescription() {
return "No more view: " + ViewConditions.createMatcherDescription(mMatcher);
}
@Override
public ConditionStatus check() {
try {
onView(mMatcher).check(doesNotExist());
return fulfilled();
} catch (AssertionError e) {
return notFulfilled();
}
}
}
private static String getResourceName(int resId) {
return InstrumentationRegistry.getInstrumentation()
.getContext()
.getResources()
.getResourceName(resId);
}
/** Generates a description for the matcher that replaces raw ids with resource names. */
private static String createMatcherDescription(Matcher<View> matcher) {
StringDescription d = new StringDescription();
matcher.describeTo(d);
String description = d.toString();
Pattern numberPattern = Pattern.compile("[0-9]+");
java.util.regex.Matcher numberMatcher = numberPattern.matcher(description);
ArrayList<Integer> starts = new ArrayList<>();
ArrayList<Integer> ends = new ArrayList<>();
ArrayList<String> resourceNames = new ArrayList<>();
while (numberMatcher.find()) {
int resourceId = Integer.parseInt(numberMatcher.group());
if (resourceId > 0xFFFFFF) {
// Build-time Android resources have ids > 0xFFFFFF
starts.add(numberMatcher.start());
ends.add(numberMatcher.end());
String resourceDescription = createResourceDescription(resourceId);
resourceNames.add(resourceDescription);
} else {
resourceNames.add(numberMatcher.group());
}
}
if (starts.size() == 0) return description;
String newDescription = description.substring(0, starts.get(0));
for (int i = 0; i < starts.size(); i++) {
newDescription += resourceNames.get(i);
int nextStart = (i == starts.size() - 1) ? description.length() : starts.get(i + 1);
newDescription += description.substring(ends.get(i), nextStart);
}
return newDescription;
}
private static String createResourceDescription(int possibleResourceId) {
try {
return getResourceName(possibleResourceId);
} catch (Resources.NotFoundException e) {
return String.valueOf(possibleResourceId);
}
}
}
|
