| /* |
| * Copyright (C) 2014 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.google.android.apps.common.testing.ui.espresso; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.android.apps.common.testing.ui.espresso.util.HumanReadables; |
| import com.google.common.base.Optional; |
| import com.google.common.collect.Lists; |
| |
| import android.view.View; |
| |
| import org.hamcrest.Matcher; |
| |
| import java.util.List; |
| |
| /** |
| * Indicates that a given matcher did not match any elements in the view hierarchy. |
| * <p> |
| * Contains details about the matcher and the current view hierarchy to aid in debugging. |
| * </p> |
| * <p> |
| * Since this is usually an unrecoverable error this exception is a runtime exception. |
| * </p> |
| * <p> |
| * References to the view and failing matcher are purposefully not included in the state of this |
| * object - since it will most likely be created on the UI thread and thrown on the instrumentation |
| * thread, it would be invalid to touch the view on the instrumentation thread. Also the view |
| * hierarchy may have changed since exception creation (leading to more confusion). |
| * </p> |
| */ |
| public final class NoMatchingViewException extends RuntimeException implements EspressoException { |
| |
| private Matcher<? super View> viewMatcher; |
| private View rootView; |
| private List<View> adapterViews = Lists.newArrayList(); |
| private boolean includeViewHierarchy = true; |
| private Optional<String> adapterViewWarning = Optional.<String>absent(); |
| |
| private NoMatchingViewException(String description) { |
| super(description); |
| } |
| |
| private NoMatchingViewException(Builder builder) { |
| super(getErrorMessage(builder)); |
| this.viewMatcher = builder.viewMatcher; |
| this.rootView = builder.rootView; |
| this.adapterViews = builder.adapterViews; |
| this.adapterViewWarning = builder.adapterViewWarning; |
| this.includeViewHierarchy = builder.includeViewHierarchy; |
| } |
| |
| private static String getErrorMessage(Builder builder) { |
| String errorMessage = ""; |
| if (builder.includeViewHierarchy) { |
| String message = String.format("No views in hierarchy found matching: %s", |
| builder.viewMatcher); |
| if (builder.adapterViewWarning.isPresent()) { |
| message = message + builder.adapterViewWarning.get(); |
| } |
| errorMessage = HumanReadables.getViewHierarchyErrorMessage(builder.rootView, |
| null /* problemViews */, |
| message, |
| null /* problemViewSuffix */); |
| } else { |
| errorMessage = String.format("Could not find a view that matches %s" , builder.viewMatcher); |
| } |
| return errorMessage; |
| } |
| |
| /** Builder for {@link NoMatchingViewException}. */ |
| public static class Builder { |
| |
| private Matcher<? super View> viewMatcher; |
| private View rootView; |
| private List<View> adapterViews = Lists.newArrayList(); |
| private boolean includeViewHierarchy = true; |
| private Optional<String> adapterViewWarning = Optional.<String>absent(); |
| |
| public Builder from(NoMatchingViewException exception) { |
| this.viewMatcher = exception.viewMatcher; |
| this.rootView = exception.rootView; |
| this.adapterViews = exception.adapterViews; |
| this.adapterViewWarning = exception.adapterViewWarning; |
| this.includeViewHierarchy = exception.includeViewHierarchy; |
| return this; |
| } |
| |
| public Builder withViewMatcher(Matcher<? super View> viewMatcher) { |
| this.viewMatcher = viewMatcher; |
| return this; |
| } |
| |
| public Builder withRootView(View rootView) { |
| this.rootView = rootView; |
| return this; |
| } |
| |
| public Builder withAdapterViews(List<View> adapterViews) { |
| this.adapterViews = adapterViews; |
| return this; |
| } |
| |
| public Builder includeViewHierarchy(boolean includeViewHierarchy) { |
| this.includeViewHierarchy = includeViewHierarchy; |
| return this; |
| } |
| |
| public Builder withAdapterViewWarning(Optional<String> adapterViewWarning) { |
| this.adapterViewWarning = adapterViewWarning; |
| return this; |
| } |
| |
| public NoMatchingViewException build() { |
| checkNotNull(viewMatcher); |
| checkNotNull(rootView); |
| checkNotNull(adapterViews); |
| checkNotNull(adapterViewWarning); |
| return new NoMatchingViewException(this); |
| } |
| } |
| } |