com.google.common.truth.MultisetSubject Maven / Gradle / Ivy
/*
* Copyright (c) 2014 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.truth;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.collect.Multiset;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* Propositions for {@link Multiset} subjects.
*
* @author Kurt Alfred Kluever
*/
public final class MultisetSubject extends IterableSubject {
private final @Nullable Multiset actual;
MultisetSubject(FailureMetadata metadata, @Nullable Multiset multiset) {
super(metadata, multiset, /* typeDescriptionOverride= */ "multiset");
this.actual = multiset;
}
/** Fails if the element does not have the given count. */
public final void hasCount(@Nullable Object element, int expectedCount) {
checkArgument(expectedCount >= 0, "expectedCount(%s) must be >= 0", expectedCount);
int actualCount = checkNotNull(actual).count(element);
check("count(%s)", element).that(actualCount).isEqualTo(expectedCount);
}
}