add tests (#1163)

zeitlinger · web-flow · commit a2d3b209fc10 · 2024-10-18T15:16:52.000+02:00
* allow java 17 in tests

Signed-off-by: Gregor Zeitlinger &lt;gregor.zeitlinger@grafana.com&gt;

* allow java 17 in tests

Signed-off-by: Gregor Zeitlinger &lt;gregor.zeitlinger@grafana.com&gt;

* add coverage

Signed-off-by: Gregor Zeitlinger &lt;gregor.zeitlinger@grafana.com&gt;

---------

Signed-off-by: Gregor Zeitlinger &lt;gregor.zeitlinger@grafana.com&gt;
diff --git a/.tool-versions b/.tool-versions
@@ -0,0 +1 @@
+java temurin-17.0.7+7
diff --git a/pom.xml b/pom.xml
@@ -232,6 +232,7 @@
                     <skip>${coverage.skip}</skip>
                     <excludes>
                         <exclude>**/generated/**</exclude>
+                        <exclude>**/*BlockingRejectedExecutionHandler*</exclude>
                     </excludes>
                 </configuration>
                 <executions>
@@ -310,6 +311,9 @@
                     <release>${java.version}</release>
                     <source>${java.version}</source>
                     <target>${java.version}</target>
+                    <testRelease>17</testRelease>
+                    <testSource>17</testSource>
+                    <testTarget>17</testTarget>
                     <showWarnings>true</showWarnings>
                     <compilerArgs>
                         <arg>-Xlint:all,-serial,-processing,-options</arg>
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExemplarsPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExemplarsPropertiesTest.java
@@ -3,7 +3,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -14,7 +13,7 @@ class ExemplarsPropertiesTest {
   void load() {
     ExemplarsProperties properties =
         load(
-            ImmutableMap.of(
+            Map.of(
                 "io.prometheus.exemplars.minRetentionPeriodSeconds", "1",
                 "io.prometheus.exemplars.maxRetentionPeriodSeconds", "2",
                 "io.prometheus.exemplars.sampleIntervalMilliseconds", "3"));
@@ -23,20 +22,17 @@ void load() {
     assertThat(properties.getSampleIntervalMilliseconds()).isEqualTo(3);
 
     assertThatExceptionOfType(PrometheusPropertiesException.class)
-        .isThrownBy(
-            () -> load(ImmutableMap.of("io.prometheus.exemplars.minRetentionPeriodSeconds", "-1")))
+        .isThrownBy(() -> load(Map.of("io.prometheus.exemplars.minRetentionPeriodSeconds", "-1")))
         .withMessage(
             "io.prometheus.exemplars.minRetentionPeriodSeconds: Expecting value > 0. Found: -1");
 
     assertThatExceptionOfType(PrometheusPropertiesException.class)
-        .isThrownBy(
-            () -> load(ImmutableMap.of("io.prometheus.exemplars.maxRetentionPeriodSeconds", "0")))
+        .isThrownBy(() -> load(Map.of("io.prometheus.exemplars.maxRetentionPeriodSeconds", "0")))
         .withMessage(
             "io.prometheus.exemplars.maxRetentionPeriodSeconds: Expecting value > 0. Found: 0");
 
     assertThatExceptionOfType(PrometheusPropertiesException.class)
-        .isThrownBy(
-            () -> load(ImmutableMap.of("io.prometheus.exemplars.sampleIntervalMilliseconds", "-1")))
+        .isThrownBy(() -> load(Map.of("io.prometheus.exemplars.sampleIntervalMilliseconds", "-1")))
         .withMessage(
             "io.prometheus.exemplars.sampleIntervalMilliseconds: Expecting value > 0. Found: -1");
   }
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterFilterPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterFilterPropertiesTest.java
@@ -2,7 +2,6 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -13,7 +12,7 @@ class ExporterFilterPropertiesTest {
   void load() {
     ExporterFilterProperties properties =
         load(
-            ImmutableMap.of(
+            Map.of(
                 "io.prometheus.exporter.filter.metricNameMustBeEqualTo", "a,b,c",
                 "io.prometheus.exporter.filter.metricNameMustNotBeEqualTo", "d,e,f",
                 "io.prometheus.exporter.filter.metricNameMustStartWith", "g,h,i",
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterHttpServerPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterHttpServerPropertiesTest.java
@@ -3,7 +3,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -12,11 +11,11 @@ class ExporterHttpServerPropertiesTest {
   @Test
   void load() {
     ExporterHttpServerProperties properties =
-        load(ImmutableMap.of("io.prometheus.exporter.httpServer.port", "1"));
+        load(Map.of("io.prometheus.exporter.httpServer.port", "1"));
     assertThat(properties.getPort()).isOne();
 
     assertThatExceptionOfType(PrometheusPropertiesException.class)
-        .isThrownBy(() -> load(ImmutableMap.of("io.prometheus.exporter.httpServer.port", "0")))
+        .isThrownBy(() -> load(Map.of("io.prometheus.exporter.httpServer.port", "0")))
         .withMessage("io.prometheus.exporter.httpServer.port: Expecting value > 0. Found: 0");
   }
 
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterOpenTelemetryPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterOpenTelemetryPropertiesTest.java
@@ -2,7 +2,6 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -13,7 +12,7 @@ class ExporterOpenTelemetryPropertiesTest {
   void load() {
     ExporterOpenTelemetryProperties properties =
         load(
-            ImmutableMap.of(
+            Map.of(
                 "io.prometheus.exporter.opentelemetry.protocol", "grpc",
                 "io.prometheus.exporter.opentelemetry.endpoint", "http://localhost:8080",
                 "io.prometheus.exporter.opentelemetry.headers", "key1=value1,key2=value2",
@@ -33,15 +32,15 @@ private static void assertValues(ExporterOpenTelemetryProperties properties) {
     assertThat(properties.getProtocol()).isEqualTo("grpc");
     assertThat(properties.getEndpoint()).isEqualTo("http://localhost:8080");
     assertThat(properties.getHeaders())
-        .containsExactlyInAnyOrderEntriesOf(ImmutableMap.of("key1", "value1", "key2", "value2"));
+        .containsExactlyInAnyOrderEntriesOf(Map.of("key1", "value1", "key2", "value2"));
     assertThat(properties.getInterval()).isEqualTo("10s");
     assertThat(properties.getTimeout()).isEqualTo("5s");
     assertThat(properties.getServiceName()).isEqualTo("serviceName");
     assertThat(properties.getServiceNamespace()).isEqualTo("serviceNamespace");
     assertThat(properties.getServiceInstanceId()).isEqualTo("serviceInstanceId");
     assertThat(properties.getServiceVersion()).isEqualTo("serviceVersion");
     assertThat(properties.getResourceAttributes())
-        .containsExactlyInAnyOrderEntriesOf(ImmutableMap.of("key1", "value1", "key2", "value2"));
+        .containsExactlyInAnyOrderEntriesOf(Map.of("key1", "value1", "key2", "value2"));
   }
 
   private static ExporterOpenTelemetryProperties load(Map<String, String> map) {
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterPropertiesTest.java
@@ -3,7 +3,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -15,7 +14,7 @@ void load() {
     ExporterProperties properties =
         load(
             new HashMap<>(
-                ImmutableMap.of(
+                Map.of(
                     "io.prometheus.exporter.includeCreatedTimestamps", "true",
                     "io.prometheus.exporter.exemplarsOnAllMetricTypes", "true")));
     assertThat(properties.getIncludeCreatedTimestamps()).isTrue();
@@ -26,17 +25,15 @@ void load() {
             () ->
                 load(
                     new HashMap<>(
-                        ImmutableMap.of(
-                            "io.prometheus.exporter.includeCreatedTimestamps", "invalid"))))
+                        Map.of("io.prometheus.exporter.includeCreatedTimestamps", "invalid"))))
         .withMessage(
             "io.prometheus.exporter.includeCreatedTimestamps: Expecting 'true' or 'false'. Found: invalid");
     assertThatExceptionOfType(PrometheusPropertiesException.class)
         .isThrownBy(
             () ->
                 load(
                     new HashMap<>(
-                        ImmutableMap.of(
-                            "io.prometheus.exporter.exemplarsOnAllMetricTypes", "invalid"))))
+                        Map.of("io.prometheus.exporter.exemplarsOnAllMetricTypes", "invalid"))))
         .withMessage(
             "io.prometheus.exporter.exemplarsOnAllMetricTypes: Expecting 'true' or 'false'. Found: invalid");
   }
diff --git a/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterPushgatewayPropertiesTest.java b/prometheus-metrics-config/src/test/java/io/prometheus/metrics/config/ExporterPushgatewayPropertiesTest.java
@@ -3,7 +3,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
-import com.google.common.collect.ImmutableMap;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.Test;
@@ -14,7 +13,7 @@ class ExporterPushgatewayPropertiesTest {
   void load() {
     ExporterPushgatewayProperties properties =
         load(
-            ImmutableMap.of(
+            Map.of(
                 "io.prometheus.exporter.pushgateway.address", "http://localhost",
                 "io.prometheus.exporter.pushgateway.job", "job",
                 "io.prometheus.exporter.pushgateway.scheme", "http"));
@@ -24,7 +23,7 @@ void load() {
     assertThat(properties.getScheme()).isEqualTo("http");
 
     assertThatExceptionOfType(PrometheusPropertiesException.class)
-        .isThrownBy(() -> load(ImmutableMap.of("io.prometheus.exporter.pushgateway.scheme", "foo")))
+        .isThrownBy(() -> load(Map.of("io.prometheus.exporter.pushgateway.scheme", "foo")))
         .withMessage(
             "io.prometheus.exporter.pushgateway.scheme: Illegal value. Expecting 'http' or 'https'. Found: foo");
   }
diff --git a/prometheus-metrics-exporter-httpserver/pom.xml b/prometheus-metrics-exporter-httpserver/pom.xml
@@ -18,8 +18,7 @@
 
     <properties>
         <automatic.module.name>io.prometheus.metrics.exporter.httpserver</automatic.module.name>
-        <!-- we have to set the line coverage to 0.0 because the module is tested with integration tests-->
-        <jacoco.line-coverage>0.0</jacoco.line-coverage>
+        <jacoco.line-coverage>0.45</jacoco.line-coverage>
     </properties>
 
     <dependencies>
diff --git a/prometheus-metrics-exporter-httpserver/src/main/java/io/prometheus/metrics/exporter/httpserver/BlockingRejectedExecutionHandler.java b/prometheus-metrics-exporter-httpserver/src/main/java/io/prometheus/metrics/exporter/httpserver/BlockingRejectedExecutionHandler.java
@@ -0,0 +1,18 @@
+package io.prometheus.metrics.exporter.httpserver;
+
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.ThreadPoolExecutor;
+
+class BlockingRejectedExecutionHandler implements RejectedExecutionHandler {
+
+  @Override
+  public void rejectedExecution(Runnable runnable, ThreadPoolExecutor threadPoolExecutor) {
+    if (!threadPoolExecutor.isShutdown()) {
+      try {
+        threadPoolExecutor.getQueue().put(runnable);
+      } catch (InterruptedException ignored) {
+        // ignore
+      }
+    }
+  }
+}
diff --git a/prometheus-metrics-exporter-httpserver/src/main/java/io/prometheus/metrics/exporter/httpserver/HTTPServer.java b/prometheus-metrics-exporter-httpserver/src/main/java/io/prometheus/metrics/exporter/httpserver/HTTPServer.java
@@ -18,7 +18,6 @@
 import java.security.PrivilegedExceptionAction;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.RejectedExecutionHandler;
 import java.util.concurrent.SynchronousQueue;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
@@ -317,18 +316,4 @@ private void assertNull(Object o, String msg) {
       }
     }
   }
-
-  private static class BlockingRejectedExecutionHandler implements RejectedExecutionHandler {
-
-    @Override
-    public void rejectedExecution(Runnable runnable, ThreadPoolExecutor threadPoolExecutor) {
-      if (!threadPoolExecutor.isShutdown()) {
-        try {
-          threadPoolExecutor.getQueue().put(runnable);
-        } catch (InterruptedException ignored) {
-          // ignore
-        }
-      }
-    }
-  }
 }
diff --git a/prometheus-metrics-exporter-httpserver/src/test/java/io/prometheus/metrics/exporter/httpserver/HTTPServerTest.java b/prometheus-metrics-exporter-httpserver/src/test/java/io/prometheus/metrics/exporter/httpserver/HTTPServerTest.java
@@ -1,23 +1,33 @@
 package io.prometheus.metrics.exporter.httpserver;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
 import com.sun.net.httpserver.Authenticator;
 import com.sun.net.httpserver.HttpExchange;
 import com.sun.net.httpserver.HttpHandler;
 import com.sun.net.httpserver.HttpPrincipal;
+import com.sun.net.httpserver.HttpsConfigurator;
+import io.prometheus.metrics.model.registry.PrometheusRegistry;
+import io.prometheus.metrics.model.registry.PrometheusScrapeRequest;
+import io.prometheus.metrics.model.snapshots.MetricSnapshots;
 import java.io.IOException;
+import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.nio.charset.StandardCharsets;
 import java.security.AccessController;
+import java.security.NoSuchAlgorithmException;
 import java.security.Principal;
+import java.util.concurrent.Executors;
+import javax.net.ssl.SSLContext;
 import javax.security.auth.Subject;
 import org.junit.jupiter.api.Test;
 
 public class HTTPServerTest {
 
   @Test
+  @SuppressWarnings({"removal"})
   public void testSubjectDoAs() throws Exception {
 
     final String user = "joe";
@@ -56,11 +66,16 @@ public Result authenticate(HttpExchange exchange) {
             .authenticatedSubjectAttributeName("aa")
             .buildAndStart();
 
-    Socket socket = new Socket();
-    try {
+    run(server, "204", "/");
+  }
+
+  private static void run(HTTPServer server, String expected, String path) throws IOException {
+    try (Socket socket = new Socket()) {
       socket.connect(new InetSocketAddress("localhost", server.getPort()));
 
-      socket.getOutputStream().write("GET / HTTP/1.1 \r\n".getBytes(StandardCharsets.UTF_8));
+      socket
+          .getOutputStream()
+          .write(("GET " + path + " HTTP/1.1 \r\n").getBytes(StandardCharsets.UTF_8));
       socket.getOutputStream().write("HOST: localhost \r\n\r\n".getBytes(StandardCharsets.UTF_8));
       socket.getOutputStream().flush();
 
@@ -70,10 +85,67 @@ public Result authenticate(HttpExchange exchange) {
       if (read > 0) {
         actualResponse = new String(resp, 0, read, StandardCharsets.UTF_8);
       }
-      assertThat(actualResponse).contains("204");
-
-    } finally {
-      socket.close();
+      assertThat(actualResponse).contains(expected);
     }
   }
+
+  @Test
+  void defaultHandler() throws IOException {
+    run(HTTPServer.builder().port(0).buildAndStart(), "200", "/");
+  }
+
+  @Test
+  void metrics() throws IOException {
+    run(
+        HTTPServer.builder()
+            .port(0)
+            .registry(new PrometheusRegistry())
+            .executorService(Executors.newFixedThreadPool(1))
+            .buildAndStart(),
+        "200",
+        "/metrics");
+  }
+
+  @Test
+  void registryThrows() throws IOException {
+    HTTPServer server =
+        HTTPServer.builder()
+            .port(0)
+            .registry(
+                new PrometheusRegistry() {
+                  @Override
+                  public MetricSnapshots scrape(PrometheusScrapeRequest scrapeRequest) {
+                    throw new IllegalStateException("test");
+                  }
+                })
+            .buildAndStart();
+    run(server, "500", "/metrics");
+  }
+
+  @Test
+  void config() throws NoSuchAlgorithmException, IOException {
+    assertThatExceptionOfType(IllegalStateException.class)
+        .isThrownBy(
+            () ->
+                HTTPServer.builder()
+                    .port(0)
+                    .hostname("localhost")
+                    .inetAddress(InetAddress.getByName("localhost"))
+                    .buildAndStart())
+        .withMessage("cannot configure 'inetAddress' and 'hostname' at the same time");
+
+    // ssl doesn't work without in tests
+    run(
+        HTTPServer.builder()
+            .port(0)
+            .httpsConfigurator(new HttpsConfigurator(SSLContext.getDefault()))
+            .buildAndStart(),
+        "",
+        "/");
+  }
+
+  @Test
+  void health() throws IOException {
+    run(HTTPServer.builder().port(0).buildAndStart(), "200", "/-/healthy");
+  }
 }
diff --git a/prometheus-metrics-exporter-httpserver/src/test/java/io/prometheus/metrics/exporter/httpserver/MetricsHandlerTest.java b/prometheus-metrics-exporter-httpserver/src/test/java/io/prometheus/metrics/exporter/httpserver/MetricsHandlerTest.java
diff --git a/prometheus-metrics-exporter-opentelemetry/src/test/java/io/prometheus/metrics/exporter/opentelemetry/OtelAutoConfigTest.java b/prometheus-metrics-exporter-opentelemetry/src/test/java/io/prometheus/metrics/exporter/opentelemetry/OtelAutoConfigTest.java
diff --git a/prometheus-metrics-exporter-opentelemetry/src/test/java/io/prometheus/metrics/exporter/opentelemetry/otelmodel/PrometheusMetricDataTest.java b/prometheus-metrics-exporter-opentelemetry/src/test/java/io/prometheus/metrics/exporter/opentelemetry/otelmodel/PrometheusMetricDataTest.java
