content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.instrumentation.micrometer.v1_5;
  
  import static io.opentelemetry.instrumentation.micrometer.v1_5.AbstractCounterTest.INSTRUMENTATION_NAME;
  import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.assertThat;
  import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.attributeEntry;
  
  import io.micrometer.core.instrument.Measurement;
  import io.micrometer.core.instrument.Meter;
  import io.micrometer.core.instrument.Metrics;
  import io.micrometer.core.instrument.Statistic;
  import io.opentelemetry.instrumentation.testing.junit.InstrumentationExtension;
  import java.util.Arrays;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicReference;
  import org.assertj.core.api.AbstractIterableAssert;
  import org.junit.jupiter.api.Test;
  
  public abstract class AbstractMeterTest {
  
    protected abstract InstrumentationExtension testing();
  
    @Test
    void testMeter() {
      // given
      AtomicReference<Double> number = new AtomicReference<>(12345.0);
      List<Measurement> measurements =
          Arrays.asList(
              new Measurement(number::get, Statistic.TOTAL),
              new Measurement(number::get, Statistic.TOTAL_TIME),
              new Measurement(number::get, Statistic.COUNT),
              new Measurement(number::get, Statistic.ACTIVE_TASKS),
              new Measurement(number::get, Statistic.DURATION),
              new Measurement(number::get, Statistic.MAX),
              new Measurement(number::get, Statistic.VALUE),
              new Measurement(number::get, Statistic.UNKNOWN));
      Meter meter =
          Meter.builder("testMeter", Meter.Type.OTHER, measurements)
              .description("This is a test meter")
              .baseUnit("things")
              .tag("tag", "value")
              .register(Metrics.globalRegistry);
  
      // then
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.total",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleSumSatisfying(
                                  sum ->
                                      sum.isMonotonic()
                                          .hasPointsSatisfying(
                                              point ->
                                                  point
                                                      .hasValue(12345)
                                                      .hasAttributes(
                                                          attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.total_time",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleSumSatisfying(
                                  sum ->
                                      sum.isMonotonic()
                                          .hasPointsSatisfying(
                                              point ->
                                                  point
                                                      .hasValue(12345)
                                                      .hasAttributes(
                                                          attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.count",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleSumSatisfying(
                                  sum ->
                                      sum.isMonotonic()
                                          .hasPointsSatisfying(
                                              point ->
                                                  point
                                                      .hasValue(12345)
                                                      .hasAttributes(
                                                          attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.active",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleSumSatisfying(
                                  sum ->
                                      sum.isNotMonotonic()
                                          .hasPointsSatisfying(
                                              point ->
                                                  point
                                                      .hasValue(12345)
                                                      .hasAttributes(
                                                          attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.duration",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleGaugeSatisfying(
                                  gauge ->
                                      gauge.hasPointsSatisfying(
                                          point ->
                                              point
                                                  .hasValue(12345)
                                                  .hasAttributes(attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.max",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleGaugeSatisfying(
                                  gauge ->
                                      gauge.hasPointsSatisfying(
                                          point ->
                                              point
                                                  .hasValue(12345)
                                                  .hasAttributes(attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.value",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleGaugeSatisfying(
                                  gauge ->
                                      gauge.hasPointsSatisfying(
                                          point ->
                                              point
                                                  .hasValue(12345)
                                                  .hasAttributes(attributeEntry("tag", "value"))))));
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME,
              "testMeter.unknown",
              metrics ->
                  metrics.anySatisfy(
                      metric ->
                          assertThat(metric)
                              .hasDescription("This is a test meter")
                              .hasUnit("things")
                              .hasDoubleGaugeSatisfying(
                                  gauge ->
                                      gauge.hasPointsSatisfying(
                                          point ->
                                              point
                                                  .hasValue(12345)
                                                  .hasAttributes(attributeEntry("tag", "value"))))));
  
      // when
      Metrics.globalRegistry.remove(meter);
      testing().clearData();
  
      // then
      testing()
          .waitAndAssertMetrics(
              INSTRUMENTATION_NAME, "testMeter.total", AbstractIterableAssert::isEmpty);
    }
  }
  