Add one missing `ClientAttributesExtractor` test (#8774)

instrumentation-api-semconv/src/test/java/io/opentelemetry/instrumentation/api/instrumenter/network/ClientAttributesExtractorInetSocketAddressTest.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.instrumentation.api.instrumenter.network;
+
+import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.assertThat;
+import static org.assertj.core.api.Assertions.entry;
+
+import io.opentelemetry.api.common.Attributes;
+import io.opentelemetry.api.common.AttributesBuilder;
+import io.opentelemetry.context.Context;
+import io.opentelemetry.instrumentation.api.instrumenter.AttributesExtractor;
+import io.opentelemetry.instrumentation.api.instrumenter.network.internal.NetworkAttributes;
+import java.net.InetSocketAddress;
+import javax.annotation.Nullable;
+import org.junit.jupiter.api.Test;
+
+class ClientAttributesExtractorInetSocketAddressTest {
+
+  static class TestClientAttributesGetter
+      implements ClientAttributesGetter<InetSocketAddress, Void> {
+
+    @Nullable
+    @Override
+    public String getClientAddress(InetSocketAddress request) {
+      // covered in ClientAttributesExtractorTest
+      return null;
+    }
+
+    @Nullable
+    @Override
+    public Integer getClientPort(InetSocketAddress request) {
+      // covered in ClientAttributesExtractorTest
+      return null;
+    }
+
+    @Nullable
+    @Override
+    public InetSocketAddress getClientInetSocketAddress(
+        InetSocketAddress request, @Nullable Void response) {
+      return request;
+    }
+  }
+
+  @Test
+  void fullAddress() {
+    InetSocketAddress address = new InetSocketAddress("api.github.com", 456);
+    assertThat(address.getAddress().getHostAddress()).isNotNull();
+
+    AttributesExtractor<InetSocketAddress, Void> extractor =
+        ClientAttributesExtractor.create(new TestClientAttributesGetter());
+
+    AttributesBuilder startAttributes = Attributes.builder();
+    extractor.onStart(startAttributes, Context.root(), address);
+    assertThat(startAttributes.build()).isEmpty();
+
+    AttributesBuilder endAttributes = Attributes.builder();
+    extractor.onEnd(endAttributes, Context.root(), address, null, null);
+    assertThat(endAttributes.build())
+        .containsOnly(
+            entry(NetworkAttributes.CLIENT_SOCKET_ADDRESS, address.getAddress().getHostAddress()),
+            entry(NetworkAttributes.CLIENT_SOCKET_PORT, 456L));
+  }
+
+  @Test
+  void noAttributes() {
+    AttributesExtractor<InetSocketAddress, Void> extractor =
+        ClientAttributesExtractor.create(new TestClientAttributesGetter());
+
+    AttributesBuilder startAttributes = Attributes.builder();
+    extractor.onStart(startAttributes, Context.root(), null);
+    assertThat(startAttributes.build()).isEmpty();
+
+    AttributesBuilder endAttributes = Attributes.builder();
+    extractor.onEnd(endAttributes, Context.root(), null, null, null);
+    assertThat(endAttributes.build()).isEmpty();
+  }
+}