Assertions.java

/**
 * Copyright 2017 Pivotal Software, 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 org.springframework.metrics.instrument;

import java.util.function.Predicate;

import static org.assertj.core.api.AssertionsForClassTypes.assertThat;

public class Assertions {
    public static void assertGaugeValue(MeterRegistry registry, String name, Predicate<Double> valueTest) {
        assertThat(registry.findMeter(Gauge.class, name))
                .containsInstanceOf(Gauge.class)
                .hasValueSatisfying(g -> assertThat(g.value()).matches(valueTest, "gauge value"));
    }
}