1 files changed, 87 insertions, 0 deletions
diff --git a/standardization/moher-api/metrics/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/metrics/impl/MetricsIT.java b/standardization/moher-api/metrics/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/metrics/impl/MetricsIT.java
new file mode 100644
index 00000000..f04636e9
--- /dev/null
+++ b/standardization/moher-api/metrics/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/metrics/impl/MetricsIT.java
@@ -0,0 +1,87 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+
+package org.onap.dcaegen2.services.sdk.standardization.moher.metrics.impl;
+
+import io.micrometer.core.instrument.Counter;
+import io.micrometer.prometheus.PrometheusMeterRegistry;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.onap.dcaegen2.services.sdk.standardization.moher.metrics.api.Metrics;
+import org.onap.dcaegen2.services.sdk.standardization.moher.metrics.api.MetricsFactory;
+import reactor.test.StepVerifier;
+
+import java.time.Duration;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class MetricsIT {
+
+    private static final String COUNTER_NAME = "Duplicates_Amount";
+    private static final String GAUGE_NAME = "gauge_Duplicates_Amount";
+    private static final String TIMER_NAME = "Duplicates_Amount_timer";
+    private static final String SUMMARY_NAME = "Duplicates_Amount_summary";
+    private static final Duration INTERVAL = Duration.ofMillis(100);
+
+    private PrometheusMeterRegistry defaultRegistry;
+    private Metrics cut;
+
+    @BeforeEach
+    void setup() {
+        defaultRegistry = MetricsFactory.createDefaultRegistry();
+        cut = MetricsFactory.createMetrics(defaultRegistry);
+    }
+
+    @Test
+    void metrics_givenDefaultRegistry_shouldReturnCreatedMeters() {
+
+        Counter counter = defaultRegistry.counter(COUNTER_NAME);
+        defaultRegistry.gauge(GAUGE_NAME, counter.count());
+        defaultRegistry.timer(TIMER_NAME);
+        defaultRegistry.summary(SUMMARY_NAME);
+
+        StepVerifier.create(cut.collect())
+                .expectNextMatches((collectedMetrics) ->
+                        collectedMetrics.contains(COUNTER_NAME) &&
+                                collectedMetrics.contains(GAUGE_NAME) &&
+                                collectedMetrics.contains(TIMER_NAME) &&
+                                collectedMetrics.contains(SUMMARY_NAME)
+                )
+                .verifyComplete();
+    }
+
+    @Test
+    void metrics_givenDefaultRegistry_shouldReturnCreatedMetersInIntervals() {
+
+        Counter counter = defaultRegistry.counter(COUNTER_NAME);
+
+        StepVerifier.create(
+                cut.collect(INTERVAL).take(2)
+        )
+                .consumeNextWith((collectedMetrics) -> {
+                    assertTrue(collectedMetrics.contains(COUNTER_NAME));
+                    counter.increment();
+                })
+                .thenAwait(INTERVAL)
+                .expectNextMatches((collectedMetrics) ->
+                        collectedMetrics.contains(COUNTER_NAME + "_total 1.0"))
+                .verifyComplete();
+    }
+}