Provide equals and hashCode for Metadata to be compared

CJSCommonPlatform · Feb 22, 2016 · 993de28 · 993de28
1 parent 7a1f8f1
commit 993de28
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diff --git a/messaging/messaging-core/pom.xml b/messaging/messaging-core/pom.xml
@@ -47,6 +47,11 @@
             <artifactId>commons-testing</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava-testlib</artifactId>
+            <scope>test</scope>
+        </dependency>
 
     </dependencies>
 

diff --git a/...ng/messaging-core/src/main/java/uk/gov/justice/services/messaging/JsonObjectMetadata.java b/...ng/messaging-core/src/main/java/uk/gov/justice/services/messaging/JsonObjectMetadata.java
@@ -3,6 +3,7 @@
 import javax.json.JsonObject;
 import javax.json.JsonString;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.UUID;
 
@@ -90,4 +91,17 @@ public static Metadata metadataFrom(final JsonObject jsonObject) {
 
         return new JsonObjectMetadata(jsonObject);
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        JsonObjectMetadata that = (JsonObjectMetadata) o;
+        return Objects.equals(metadata, that.metadata);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(metadata);
+    }
 }
diff --git a/...essaging-core/src/test/java/uk/gov/justice/services/messaging/JsonObjectMetadataTest.java b/...essaging-core/src/test/java/uk/gov/justice/services/messaging/JsonObjectMetadataTest.java
@@ -1,6 +1,7 @@
 package uk.gov.justice.services.messaging;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.testing.EqualsTester;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -162,4 +163,55 @@ public void shouldThrowExceptionIfNameIsNull() throws Exception {
                 .build()
         );
     }
+
+    @SuppressWarnings({"squid:MethodCyclomaticComplexity", "squid:S1067", "squid:S00122"})
+    @Test
+    public void shouldTestEqualsAndHashCode() {
+
+        Metadata item1 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item2 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item3 = metadata(UUID.randomUUID().toString(), UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item4 = metadata(UUID_ID, UUID.randomUUID().toString(), UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item5 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID.randomUUID().toString(), UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item6 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID.randomUUID().toString(), UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item7 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID.randomUUID().toString(), UUID_STREAM_ID, MESSAGE_NAME, STREAM_VERSION);
+        Metadata item8 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID.randomUUID().toString(), MESSAGE_NAME, STREAM_VERSION);
+        Metadata item9 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, "dummy name", STREAM_VERSION);
+        Metadata item10 = metadata(UUID_ID, UUID_CLIENT_CORRELATION, UUID_CAUSATION, UUID_USER_ID, UUID_SESSION_ID, UUID_STREAM_ID, MESSAGE_NAME, 0L);
+
+        new EqualsTester()
+                .addEqualityGroup(item1, item2)
+                .addEqualityGroup(item3)
+                .addEqualityGroup(item4)
+                .addEqualityGroup(item5)
+                .addEqualityGroup(item6)
+                .addEqualityGroup(item7)
+                .addEqualityGroup(item8)
+                .addEqualityGroup(item9)
+                .addEqualityGroup(item10)
+                .testEquals();
+    }
+
+    private Metadata metadata(String id, String uuidClientCorrelation, String uuidCausation, String uuidUserId,
+                              String uuidSessionId, String uuidStreamId, String messageName, Long streamVersion) {
+        return metadataFrom(Json.createObjectBuilder()
+                .add(ID, id)
+                .add(NAME, messageName)
+                .add(CLIENT_CORRELATION[0], Json.createObjectBuilder()
+                        .add(CLIENT_CORRELATION[1], uuidClientCorrelation)
+                )
+                .add(CAUSATION, Json.createArrayBuilder()
+                        .add(uuidCausation)
+                )
+                .add(CONTEXT, Json.createObjectBuilder()
+                        .add(USER_ID[1], uuidUserId)
+                        .add(SESSION_ID[1], uuidSessionId)
+                )
+                .add(STREAM, Json.createObjectBuilder()
+                        .add(STREAM_ID[1], uuidStreamId)
+                        .add(VERSION[1], streamVersion)
+                )
+                .build());
+
+    }
 }