Added unit test specification for CommandOperationHelper

Author: jyemin

driver-core/src/test/unit/com/mongodb/operation/CommandOperationHelperSpecification.groovy

@@ -0,0 +1,92 @@
+/*
+ * Copyright 2015 MongoDB, Inc.
+ *
+ * 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 com.mongodb.operation
+
+import com.mongodb.MongoCommandException
+import com.mongodb.ServerAddress
+import org.bson.BsonBoolean
+import org.bson.BsonDocument
+import org.bson.BsonInt32
+import org.bson.BsonString
+import spock.lang.Specification
+
+import static com.mongodb.operation.CommandOperationHelper.isNamespaceError
+import static com.mongodb.operation.CommandOperationHelper.rethrowIfNotNamespaceError
+
+class CommandOperationHelperSpecification extends Specification {
+
+    def 'should be a namespace error if Throwable is a MongoCommandException and error code is 26'() {
+        expect:
+        isNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                           .append('code', new BsonInt32(26)),
+                                                   new ServerAddress()))
+    }
+
+    def 'should be a namespace error if Throwable is a MongoCommandException and error message contains "ns not found"'() {
+        expect:
+        isNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                           .append('errmsg', new BsonString('the ns not found here')),
+                                                   new ServerAddress()))
+    }
+
+    def 'should not be a namespace error if Throwable is a MongoCommandException and error message does not contain "ns not found"'() {
+        expect:
+        !isNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                           .append('errmsg', new BsonString('some other error')),
+                                                   new ServerAddress()))
+    }
+
+    def 'should not be a namespace error should return false if Throwable is not a MongoCommandException'() {
+        expect:
+        !isNamespaceError(new NullPointerException())
+    }
+
+    def 'should rethrow if not namespace error'() {
+        when:
+        rethrowIfNotNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                                     .append('errmsg', new BsonString('some other error')),
+                                                             new ServerAddress()))
+
+        then:
+        thrown(MongoCommandException)
+
+        when:
+        rethrowIfNotNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                                     .append('errmsg', new BsonString('some other error')),
+                                                             new ServerAddress()), 'some value')
+
+        then:
+        thrown(MongoCommandException)
+    }
+
+    def 'should not rethrow if namespace error'() {
+        when:
+        rethrowIfNotNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                                     .append('code', new BsonInt32(26)),
+                                                             new ServerAddress()))
+
+        then:
+        true
+    }
+
+    def 'should return default value if not namespace error'() {
+        expect:
+        rethrowIfNotNamespaceError(new MongoCommandException(new BsonDocument('ok', BsonBoolean.FALSE)
+                                                                     .append('code', new BsonInt32(26)),
+                                                             new ServerAddress()), 'some value') == 'some value'
+    }
+}