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/*
* Copyright 2013 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.common.jimfs;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import com.google.common.collect.ImmutableMap;
import java.io.IOException;
import java.nio.file.attribute.FileAttributeView;
import java.util.Map;
import java.util.Set;
import org.junit.Before;
/**
* Abstract base class for tests of individual {@link AttributeProvider} implementations.
*
* @author Colin Decker
*/
public abstract class AbstractAttributeProviderTest<P extends AttributeProvider> {
protected static final ImmutableMap<String, FileAttributeView> NO_INHERITED_VIEWS =
ImmutableMap.of();
protected P provider;
protected File file;
/** Create the provider being tested. */
protected abstract P createProvider();
/** Creates the set of providers the provider being tested depends on. */
protected abstract Set<? extends AttributeProvider> createInheritedProviders();
protected FileLookup fileLookup() {
return new FileLookup() {
@Override
public File lookup() throws IOException {
return file;
}
};
}
@Before
public void setUp() {
this.provider = createProvider();
this.file = Directory.create(0);
Map<String, ?> defaultValues = createDefaultValues();
setDefaultValues(file, provider, defaultValues);
Set<? extends AttributeProvider> inheritedProviders = createInheritedProviders();
for (AttributeProvider inherited : inheritedProviders) {
setDefaultValues(file, inherited, defaultValues);
}
}
private static void setDefaultValues(
File file, AttributeProvider provider, Map<String, ?> defaultValues) {
Map<String, ?> defaults = provider.defaultValues(defaultValues);
for (Map.Entry<String, ?> entry : defaults.entrySet()) {
int separatorIndex = entry.getKey().indexOf(':');
String view = entry.getKey().substring(0, separatorIndex);
String attr = entry.getKey().substring(separatorIndex + 1);
file.setAttribute(view, attr, entry.getValue());
}
}
protected Map<String, ?> createDefaultValues() {
return ImmutableMap.of();
}
// assertions
protected void assertSupportsAll(String... attributes) {
for (String attribute : attributes) {
assertThat(provider.supports(attribute)).isTrue();
}
}
protected void assertContainsAll(File file, ImmutableMap<String, Object> expectedAttributes) {
for (Map.Entry<String, Object> entry : expectedAttributes.entrySet()) {
String attribute = entry.getKey();
Object value = entry.getValue();
assertThat(provider.get(file, attribute)).isEqualTo(value);
}
}
protected void assertSetAndGetSucceeds(String attribute, Object value) {
assertSetAndGetSucceeds(attribute, value, false);
}
protected void assertSetAndGetSucceedsOnCreate(String attribute, Object value) {
assertSetAndGetSucceeds(attribute, value, true);
}
protected void assertSetAndGetSucceeds(String attribute, Object value, boolean create) {
provider.set(file, provider.name(), attribute, value, create);
assertThat(provider.get(file, attribute)).isEqualTo(value);
}
@SuppressWarnings("EmptyCatchBlock")
protected void assertSetFails(String attribute, Object value) {
try {
provider.set(file, provider.name(), attribute, value, false);
fail();
} catch (IllegalArgumentException expected) {
}
}
@SuppressWarnings("EmptyCatchBlock")
protected void assertSetFailsOnCreate(String attribute, Object value) {
try {
provider.set(file, provider.name(), attribute, value, true);
fail();
} catch (UnsupportedOperationException expected) {
}
}
}
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