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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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.android.utils;
import java.util.Date;
/**
* Provides abstraction over @{link Date#Date()}, to allow code to swap out calls to system date by
* a fake date in tests to create reliable tests.
*/
public interface DateProvider {
/**
* Implementation that calls to the real @{link Date#Date()}. This should never be called
* through directly in code. The right pattern is to create a variable and assign that variable
* to {@link #SYSTEM} upon initialization and override the variable in tests.
*/
DateProvider SYSTEM =
new DateProvider() {
@Override
public Date now() {
return new Date();
}
};
/**
* Provides this DataProvider's notion of 'now'.
*/
Date now();
}
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