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new aef7ac23c [Improve] add prometheusUtil unit test (#2360)
aef7ac23c is described below
commit aef7ac23c43be08ac4e9b81fe188e00d1c7eadf0
Author: YuLuo <[email protected]>
AuthorDate: Wed Jul 24 23:45:53 2024 +0800
[Improve] add prometheusUtil unit test (#2360)
Signed-off-by: yuluo-yx <[email protected]>
Co-authored-by: tomsun28 <[email protected]>
---
.../common/util/prometheus/PrometheusUtilTest.java | 227 +++++++++++++++++++++
1 file changed, 227 insertions(+)
diff --git
a/common/src/test/java/org/apache/hertzbeat/common/util/prometheus/PrometheusUtilTest.java
b/common/src/test/java/org/apache/hertzbeat/common/util/prometheus/PrometheusUtilTest.java
new file mode 100644
index 000000000..e74570f07
--- /dev/null
+++
b/common/src/test/java/org/apache/hertzbeat/common/util/prometheus/PrometheusUtilTest.java
@@ -0,0 +1,227 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.hertzbeat.common.util.prometheus;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * test case for {@link PrometheusUtil}
+ */
+
+class PrometheusUtilTest {
+
+ @Test
+ void testParseMetricsNormalInput() throws IOException {
+
+ String input =
"metric_name{label1=\"value1\",label2=\"value2\"} 123.45 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(123.45, metric.getValue());
+ assertEquals(67890, metric.getTimestamp());
+
+ List<Label> labels = metric.getLabelList();
+ assertEquals(2, labels.size());
+ assertEquals("label1", labels.get(0).getName());
+ assertEquals("value1", labels.get(0).getValue());
+ assertEquals("label2", labels.get(1).getName());
+ assertEquals("value2", labels.get(1).getValue());
+ }
+
+ @Test
+ void testParseMetricsComments() throws IOException {
+
+ String input = "# This is a
comment\nmetric_name{label1=\"value1\"} 123.45 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(123.45, metric.getValue());
+ assertEquals(67890, metric.getTimestamp());
+
+ List<Label> labels = metric.getLabelList();
+ assertEquals(1, labels.size());
+ assertEquals("label1", labels.get(0).getName());
+ assertEquals("value1", labels.get(0).getValue());
+ }
+
+ @Test
+ void testParseMetricsMalformedInput() throws IOException {
+
+ String input = "metric_name{label1=value1} 123.45 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNull(metrics);
+ }
+
+ @Test
+ void testParseMetricsNaNValue() throws IOException {
+
+ String input = "metric_name{label1=\"value1\"} NaN 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertTrue(Double.isNaN(metric.getValue()));
+ assertEquals(67890, metric.getTimestamp());
+ }
+
+ @Test
+ void testParseMetricsPositiveInfinity() throws IOException {
+
+ String input = "metric_name{label1=\"value1\"} +Inf 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(Double.POSITIVE_INFINITY, metric.getValue());
+ assertEquals(67890, metric.getTimestamp());
+ }
+
+ @Test
+ void testParseMetricsNegativeInfinity() throws IOException {
+
+ String input = "metric_name{label1=\"value1\"} -Inf 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(Double.NEGATIVE_INFINITY, metric.getValue());
+ assertEquals(67890, metric.getTimestamp());
+ }
+
+ @Test
+ void testParseMetricsWithoutLabels() throws IOException {
+
+ String input = "metric_name 123.45 67890\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(123.45, metric.getValue());
+ assertEquals(67890, metric.getTimestamp());
+ assertNull(metric.getLabelList());
+ }
+
+ @Test
+ void testParseMetricsWithoutTimestamp() throws IOException {
+
+ String input = "metric_name{label1=\"value1\"} 123.45\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(1, metrics.size());
+
+ Metric metric = metrics.get(0);
+ assertEquals("metric_name", metric.getMetricName());
+ assertEquals(123.45, metric.getValue());
+ assertEquals(null, metric.getTimestamp()); // Assuming 0 for no
timestamp
+
+ List<Label> labels = metric.getLabelList();
+ assertEquals(1, labels.size());
+ assertEquals("label1", labels.get(0).getName());
+ assertEquals("value1", labels.get(0).getValue());
+ }
+
+ @Test
+ void testParseMultipleMetrics() throws IOException {
+
+ String input = "metric_name1{label1=\"value1\"} 123.45
67890\nmetric_name2 678.90 12345\n";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertEquals(2, metrics.size());
+
+ Metric metric1 = metrics.get(0);
+ assertEquals("metric_name1", metric1.getMetricName());
+ assertEquals(123.45, metric1.getValue());
+ assertEquals(67890, metric1.getTimestamp());
+
+ List<Label> labels1 = metric1.getLabelList();
+ assertEquals(1, labels1.size());
+ assertEquals("label1", labels1.get(0).getName());
+ assertEquals("value1", labels1.get(0).getValue());
+
+ Metric metric2 = metrics.get(1);
+ assertEquals("metric_name2", metric2.getMetricName());
+ assertEquals(678.90, metric2.getValue());
+ assertEquals(12345, metric2.getTimestamp());
+ assertNull(metric2.getLabelList());
+ }
+
+ @Test
+ void testParseEmptyInput() throws IOException {
+
+ String input = "";
+ InputStream inputStream = new
ByteArrayInputStream(input.getBytes());
+
+ List<Metric> metrics = PrometheusUtil.parseMetrics(inputStream);
+
+ assertNotNull(metrics);
+ assertTrue(metrics.isEmpty());
+ }
+
+}
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