diff --git a/lib/rb/spec/ThriftSpec.thrift b/lib/rb/spec/ThriftSpec.thrift
new file mode 100644
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+++ b/lib/rb/spec/ThriftSpec.thrift
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
+namespace rb SpecNamespace
+
+struct Hello {
+  1: string greeting = "hello world"
+}
+
+struct Foo {
+  1: i32 simple = 53,
+  2: string words = "words",
+  3: Hello hello = {'greeting' : "hello, world!"},
+  4: list<i32> ints = [1, 2, 2, 3],
+  5: map<i32, map<string, double>> complex,
+  6: set<i16> shorts = [5, 17, 239],
+  7: optional string opt_string
+}
+
+struct BoolStruct {
+  1: bool yesno = 1
+}
+
+struct SimpleList {
+  1: list<bool> bools,
+  2: list<byte> bytes,
+  3: list<i16> i16s,
+  4: list<i32> i32s,
+  5: list<i64> i64s,
+  6: list<double> doubles,
+  7: list<string> strings,
+  8: list<map<i16, i16>> maps,
+  9: list<list<i16>> lists,
+  10: list<set<i16>> sets,
+  11: list<Hello> hellos
+}
+
+exception Xception {
+  1: string message,
+  2: i32 code = 1
+}
+
+service NonblockingService {
+  Hello greeting(1:bool english)
+  bool block()
+  oneway void unblock(1:i32 n)
+  oneway void shutdown()
+  void sleep(1:double seconds)
+}