1 files changed, 102 insertions, 0 deletions
diff --git a/api/src/test/java/io/opencensus/trace/AnnotationTest.java b/api/src/test/java/io/opencensus/trace/AnnotationTest.java
new file mode 100644
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--- /dev/null
+++ b/api/src/test/java/io/opencensus/trace/AnnotationTest.java
@@ -0,0 +1,102 @@
+/*
+ * 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 static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.testing.EqualsTester;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link Link}. */
+@RunWith(JUnit4.class)
+public class AnnotationTest {
+  @Test(expected = NullPointerException.class)
+  public void fromDescription_NullDescription() {
+    Annotation.fromDescription(null);
+  }
+
+  @Test
+  public void fromDescription() {
+    Annotation annotation = Annotation.fromDescription("MyAnnotationText");
+    assertThat(annotation.getDescription()).isEqualTo("MyAnnotationText");
+    assertThat(annotation.getAttributes().size()).isEqualTo(0);
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void fromDescriptionAndAttributes_NullDescription() {
+    Annotation.fromDescriptionAndAttributes(null, Collections.<String, AttributeValue>emptyMap());
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void fromDescriptionAndAttributes_NullAttributes() {
+    Annotation.fromDescriptionAndAttributes("", null);
+  }
+
+  @Test
+  public void fromDescriptionAndAttributes() {
+    Map<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
+    attributes.put(
+        "MyStringAttributeKey", AttributeValue.stringAttributeValue("MyStringAttributeValue"));
+    Annotation annotation = Annotation.fromDescriptionAndAttributes("MyAnnotationText", attributes);
+    assertThat(annotation.getDescription()).isEqualTo("MyAnnotationText");
+    assertThat(annotation.getAttributes()).isEqualTo(attributes);
+  }
+
+  @Test
+  public void fromDescriptionAndAttributes_EmptyAttributes() {
+    Annotation annotation =
+        Annotation.fromDescriptionAndAttributes(
+            "MyAnnotationText", Collections.<String, AttributeValue>emptyMap());
+    assertThat(annotation.getDescription()).isEqualTo("MyAnnotationText");
+    assertThat(annotation.getAttributes().size()).isEqualTo(0);
+  }
+
+  @Test
+  public void annotation_EqualsAndHashCode() {
+    EqualsTester tester = new EqualsTester();
+    Map<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
+    attributes.put(
+        "MyStringAttributeKey", AttributeValue.stringAttributeValue("MyStringAttributeValue"));
+    tester
+        .addEqualityGroup(
+            Annotation.fromDescription("MyAnnotationText"),
+            Annotation.fromDescriptionAndAttributes(
+                "MyAnnotationText", Collections.<String, AttributeValue>emptyMap()))
+        .addEqualityGroup(
+            Annotation.fromDescriptionAndAttributes("MyAnnotationText", attributes),
+            Annotation.fromDescriptionAndAttributes("MyAnnotationText", attributes))
+        .addEqualityGroup(Annotation.fromDescription("MyAnnotationText2"));
+    tester.testEquals();
+  }
+
+  @Test
+  public void annotation_ToString() {
+    Annotation annotation = Annotation.fromDescription("MyAnnotationText");
+    assertThat(annotation.toString()).contains("MyAnnotationText");
+    Map<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
+    attributes.put(
+        "MyStringAttributeKey", AttributeValue.stringAttributeValue("MyStringAttributeValue"));
+    annotation = Annotation.fromDescriptionAndAttributes("MyAnnotationText2", attributes);
+    assertThat(annotation.toString()).contains("MyAnnotationText2");
+    assertThat(annotation.toString()).contains(attributes.toString());
+  }
+}