/*
* Copyright 2015 Google Inc. All Rights Reserved.
*
* 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.errorprone.bugpatterns.testdata;
import static com.google.common.util.concurrent.Futures.immediateFuture;
import com.google.common.util.concurrent.AsyncFunction;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.ListenableFuture;
/**
* Positive cases for {@link AsyncFunctionReturnsNull}.
*/
public class AsyncFunctionReturnsNullPositiveCases {
static {
new AsyncFunction<String, Object>() {
@Override
public ListenableFuture<Object> apply(String input) throws Exception {
// BUG: Diagnostic contains: immediateFuture(null)
return null;
}
};
new AsyncFunction<Object, String>() {
@Override
public ListenableFuture<String> apply(Object o) {
if (o instanceof String) {
return immediateFuture((String) o);
}
// BUG: Diagnostic contains: immediateFuture(null)
return null;
}
};
new AsyncFunction<Object, String>() {
@Override
public CheckedFuture<String, Exception> apply(Object o) {
// BUG: Diagnostic contains: immediateFuture(null)
return null;
}
};
new MyAsyncFunction() {
@Override
public CheckedFuture<String, Exception> apply(Object o) {
// BUG: Diagnostic contains: immediateFuture(null)
return null;
}
};
}
static class MyAsyncFunction implements AsyncFunction<Object, String> {
@Override
public ListenableFuture<String> apply(Object input) throws Exception {
return immediateFuture(input.toString());
}
}
}