1 files changed, 69 insertions, 0 deletions
diff --git a/api/src/test/java/io/opencensus/trace/NoopSpan.java b/api/src/test/java/io/opencensus/trace/NoopSpan.java
new file mode 100644
index 00000000..a21a8aac
--- /dev/null
+++ b/api/src/test/java/io/opencensus/trace/NoopSpan.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2017, OpenCensus Authors
+ *
+ * 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.
+ */
+
+package io.opencensus.trace;
+
+import io.opencensus.internal.Utils;
+import java.util.EnumSet;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+/**
+ * Class to be used in tests where an implementation for the Span is needed.
+ *
+ * <p>Not final to allow Mockito to "spy" this class.
+ */
+public class NoopSpan extends Span {
+
+  /** Creates a new {@code NoopSpan}. */
+  public NoopSpan(SpanContext context, @Nullable EnumSet<Options> options) {
+    super(Utils.checkNotNull(context, "context"), options);
+  }
+
+  @Override
+  public void putAttributes(Map<String, AttributeValue> attributes) {
+    Utils.checkNotNull(attributes, "attributes");
+  }
+
+  @Override
+  public void addAnnotation(String description, Map<String, AttributeValue> attributes) {
+    Utils.checkNotNull(description, "description");
+    Utils.checkNotNull(attributes, "attributes");
+  }
+
+  @Override
+  public void addAnnotation(Annotation annotation) {
+    Utils.checkNotNull(annotation, "annotation");
+  }
+
+  @Override
+  public void addNetworkEvent(NetworkEvent networkEvent) {}
+
+  @Override
+  public void addMessageEvent(MessageEvent messageEvent) {
+    Utils.checkNotNull(messageEvent, "messageEvent");
+  }
+
+  @Override
+  public void addLink(Link link) {
+    Utils.checkNotNull(link, "link");
+  }
+
+  @Override
+  public void end(EndSpanOptions options) {
+    Utils.checkNotNull(options, "options");
+  }
+}