Add JSON to CLI commands

- Drivers
- Groups

Change-Id: Ib47dc75d9db839329e6cf8fc4439150848f604f5
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/GroupBucketJsonMatcher.java b/core/common/src/test/java/org/onosproject/codec/impl/GroupBucketJsonMatcher.java
new file mode 100644
index 0000000..b305621
--- /dev/null
+++ b/core/common/src/test/java/org/onosproject/codec/impl/GroupBucketJsonMatcher.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 org.onosproject.codec.impl;
+
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.net.group.GroupBucket;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+/**
+ * Hamcrest matcher for instructions.
+ */
+public final class GroupBucketJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final GroupBucket bucket;
+
+    private GroupBucketJsonMatcher(GroupBucket bucket) {
+        this.bucket = bucket;
+    }
+
+    /**
+     * Matches the contents of a group bucket.
+     *
+     * @param bucketJson JSON representation of bucket to match
+     * @param description Description object used for recording errors
+     * @return true if contents match, false otherwise
+     */
+    @Override
+    public boolean matchesSafely(JsonNode bucketJson, Description description) {
+
+        // check type
+        final String jsonType = bucketJson.get("type").textValue();
+        if (!bucket.type().name().equals(jsonType)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+
+        final long jsonWeight = bucketJson.get("weight").longValue();
+        if (bucket.weight() != jsonWeight) {
+            description.appendText("weight was " + jsonWeight);
+            return false;
+        }
+
+        final long packetsJson = bucketJson.get("packets").asLong();
+        if (bucket.packets() != packetsJson) {
+            description.appendText("packets was " + packetsJson);
+            return false;
+        }
+
+        final long bytesJson = bucketJson.get("bytes").asLong();
+        if (bucket.bytes() != bytesJson) {
+            description.appendText("bytes was " + packetsJson);
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(bucket.toString());
+    }
+
+    /**
+     * Factory to allocate an bucket matcher.
+     *
+     * @param bucket bucket object we are looking for
+     * @return matcher
+     */
+    public static GroupBucketJsonMatcher matchesGroupBucket(GroupBucket bucket) {
+        return new GroupBucketJsonMatcher(bucket);
+    }
+}