Apply default decorators in unit tests

dd-java-agent/testing/src/main/java/datadog/trace/agent/test/AgentTestRunner.java

@@ -1,17 +1,26 @@
 package datadog.trace.agent.test;
 
 import datadog.opentracing.DDTracer;
+import datadog.opentracing.decorators.AbstractDecorator;
+import datadog.opentracing.decorators.DBTypeDecorator;
+import datadog.opentracing.decorators.DDDecoratorsFactory;
 import datadog.trace.agent.tooling.AgentInstaller;
 import datadog.trace.agent.tooling.Instrumenter;
 import datadog.trace.common.writer.ListWriter;
+
 import io.opentracing.Tracer;
+
 import java.lang.instrument.ClassFileTransformer;
 import java.lang.instrument.Instrumentation;
+import java.util.List;
+
 import net.bytebuddy.agent.ByteBuddyAgent;
+
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.spockframework.runtime.model.SpecMetadata;
+
 import spock.lang.Specification;
 
 /**
@@ -45,6 +54,11 @@ public abstract class AgentTestRunner extends Specification {
   static {
     TEST_WRITER = new ListWriter();
     TEST_TRACER = new DDTracer(TEST_WRITER);
+
+    final List<AbstractDecorator> decorators = DDDecoratorsFactory.createFromResources();
+    for (final AbstractDecorator decorator : decorators) {
+      ((DDTracer) TEST_TRACER).addDecorator(decorator);
+    }
     ByteBuddyAgent.install();
     instrumentation = ByteBuddyAgent.getInstrumentation();
   }

dd-java-agent/testing/src/main/resources/dd-trace-decorators.yaml

@@ -0,0 +1,15 @@
+# Decorators are used to add extra information to span
+# Could be DBServiceDecorator, MapperDecorator or HTTPServiceDecorator
+decorators:
+  - type: HTTPComponent
+    matchingValue: java-okhttp
+    setValue: http-client
+  - type: HTTPComponent
+    matchingValue: java-aws-sdk
+    setValue: aws-client
+  - type: ErrorFlag
+  - type: DBTypeDecorator
+  - type: DBStatementAsResourceName
+  - type: OperationDecorator
+  - type: Status404Decorator
+  - type: URLAsResourceName