001/* 002 * Copyright (C) 2008 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing; 018 019import com.google.common.annotations.GwtCompatible; 020import com.google.common.collect.testing.features.CollectionSize; 021import java.util.Collection; 022import org.jspecify.annotations.NullMarked; 023import org.jspecify.annotations.Nullable; 024 025/** 026 * The subject-generator interface accepted by Collection testers, for testing a Collection at one 027 * particular {@link CollectionSize}. 028 * 029 * <p>This interface should not be implemented outside this package; {@link 030 * PerCollectionSizeTestSuiteBuilder} constructs instances of it from a more general {@link 031 * TestCollectionGenerator}. 032 * 033 * @author George van den Driessche 034 */ 035@GwtCompatible 036@NullMarked 037public interface OneSizeTestContainerGenerator<T, E extends @Nullable Object> 038 extends TestSubjectGenerator<T>, TestContainerGenerator<T, E> { 039 TestContainerGenerator<T, E> getInnerGenerator(); 040 041 Collection<E> getSampleElements(int howMany); 042 043 CollectionSize getCollectionSize(); 044}