diff --git a/test/Include.thrift b/test/Include.thrift
index 562319b..f61cf05 100644
--- a/test/Include.thrift
+++ b/test/Include.thrift
@@ -17,7 +17,7 @@
  * under the License.
  */
 
-include "ThriftTest.thrift"
+include "v0.16/ThriftTest.thrift"
 
 struct IncludeTest {
   1: required ThriftTest.Bools bools
diff --git a/test/Makefile.am b/test/Makefile.am
index da3cbb1..df3a23c 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -139,6 +139,7 @@
 	BrokenConstants.thrift \
 	ConstantsDemo.thrift \
 	DebugProtoTest.thrift \
+	v0.16/DebugProtoTest.thrift \
 	DenseLinkingTest.thrift \
 	DocTest.thrift \
 	DoubleConstantsTest.thrift \
@@ -158,6 +159,7 @@
 	SmallTest.thrift \
 	StressTest.thrift \
 	ThriftTest.thrift \
+	v0.16/ThriftTest.thrift \
 	TypedefTest.thrift \
 	Types.thrift \
 	UnsafeTypes.thrift \
diff --git a/test/ReuseObjects.thrift b/test/ReuseObjects.thrift
index 2dd6c6e..1dd36cd 100644
--- a/test/ReuseObjects.thrift
+++ b/test/ReuseObjects.thrift
@@ -21,7 +21,7 @@
 
 namespace java thrift.test
 
-include "ThriftTest.thrift"
+include "v0.16/ThriftTest.thrift"
 
 struct Reuse {
   1: i32 val1;
diff --git a/test/c_glib/CMakeLists.txt b/test/c_glib/CMakeLists.txt
index 410774d..ecbd2ae 100644
--- a/test/c_glib/CMakeLists.txt
+++ b/test/c_glib/CMakeLists.txt
@@ -56,5 +56,5 @@
 #
 
 add_custom_command(OUTPUT gen-c_glib/t_test_second_service.c  gen-c_glib/t_test_second_service.h  gen-c_glib/t_test_thrift_test.c  gen-c_glib/t_test_thrift_test.h  gen-c_glib/t_test_thrift_test_types.c  gen-c_glib/t_test_thrift_test_types.h
-    COMMAND ${THRIFT_COMPILER} --gen c_glib -r ${PROJECT_SOURCE_DIR}/test/ThriftTest.thrift
+    COMMAND ${THRIFT_COMPILER} --gen c_glib -r ${PROJECT_SOURCE_DIR}/test/v0.16/ThriftTest.thrift
 )
diff --git a/test/c_glib/Makefile.am b/test/c_glib/Makefile.am
index 98a3734..f55a977 100644
--- a/test/c_glib/Makefile.am
+++ b/test/c_glib/Makefile.am
@@ -56,7 +56,7 @@
 #
 # Common thrift code generation rules
 #
-gen-c_glib/t_test_second_service.c  gen-c_glib/t_test_second_service.h  gen-c_glib/t_test_thrift_test.c  gen-c_glib/t_test_thrift_test.h  gen-c_glib/t_test_thrift_test_types.c  gen-c_glib/t_test_thrift_test_types.h: $(top_srcdir)/test/ThriftTest.thrift $(THRIFT)
+gen-c_glib/t_test_second_service.c  gen-c_glib/t_test_second_service.h  gen-c_glib/t_test_thrift_test.c  gen-c_glib/t_test_thrift_test.h  gen-c_glib/t_test_thrift_test_types.c  gen-c_glib/t_test_thrift_test_types.h: $(top_srcdir)/test/v0.16/ThriftTest.thrift $(THRIFT)
 	$(THRIFT) --gen c_glib -r $<
 
 AM_CFLAGS = -g -Wall -Wextra $(GLIB_CFLAGS) $(GOBJECT_CFLAGS)
diff --git a/test/cpp/CMakeLists.txt b/test/cpp/CMakeLists.txt
index a6c1fd5..f693a27 100644
--- a/test/cpp/CMakeLists.txt
+++ b/test/cpp/CMakeLists.txt
@@ -100,7 +100,7 @@
 #
 
 add_custom_command(OUTPUT gen-cpp/SecondService.cpp gen-cpp/SecondService.h gen-cpp/ThriftTest.cpp gen-cpp/ThriftTest.h gen-cpp/ThriftTest_types.cpp gen-cpp/ThriftTest_constants.cpp
-    COMMAND ${THRIFT_COMPILER} --gen cpp:templates,cob_style -r ${PROJECT_SOURCE_DIR}/test/ThriftTest.thrift
+    COMMAND ${THRIFT_COMPILER} --gen cpp:templates,cob_style -r ${PROJECT_SOURCE_DIR}/test/v0.16/ThriftTest.thrift
 )
 
 add_custom_command(OUTPUT gen-cpp/Service.cpp
diff --git a/test/cpp/Makefile.am b/test/cpp/Makefile.am
index d3754f4..9e8b676 100644
--- a/test/cpp/Makefile.am
+++ b/test/cpp/Makefile.am
@@ -97,7 +97,7 @@
 #
 # Common thrift code generation rules
 #
-gen-cpp/ThriftTest.cpp gen-cpp/ThriftTest_types.cpp gen-cpp/ThriftTest_constants.cpp gen-cpp/SecondService.cpp gen-cpp/SecondService.h gen-cpp/SecondService.tcc: $(top_srcdir)/test/ThriftTest.thrift $(THRIFT)
+gen-cpp/ThriftTest.cpp gen-cpp/ThriftTest_types.cpp gen-cpp/ThriftTest_constants.cpp gen-cpp/SecondService.cpp gen-cpp/SecondService.h gen-cpp/SecondService.tcc: $(top_srcdir)/test/v0.16/ThriftTest.thrift $(THRIFT)
 	$(THRIFT) --gen cpp:templates,cob_style -r $<
 
 gen-cpp/Service.cpp: $(top_srcdir)/test/StressTest.thrift $(THRIFT)
diff --git a/test/crossrunner/util.py b/test/crossrunner/util.py
index c214df8..8511f58 100644
--- a/test/crossrunner/util.py
+++ b/test/crossrunner/util.py
@@ -21,7 +21,7 @@
 
 
 def domain_socket_path(port):
-    return '/tmp/ThriftTest.thrift.%d' % port
+    return '/tmp/v0.16/ThriftTest.thrift.%d' % port
 
 
 def merge_dict(base, update):
diff --git a/test/dart/Makefile.am b/test/dart/Makefile.am
index 27fdc09..81f2f5b 100644
--- a/test/dart/Makefile.am
+++ b/test/dart/Makefile.am
@@ -17,8 +17,8 @@
 # under the License.
 #
 
-gen-dart/thrift_test/lib/thrift_test.dart: ../ThriftTest.thrift
-	$(THRIFT) --gen dart ../ThriftTest.thrift
+gen-dart/thrift_test/lib/thrift_test.dart: ../v0.16/ThriftTest.thrift
+	$(THRIFT) --gen dart ../v0.16/ThriftTest.thrift
 
 pub-get-gen: gen-dart/thrift_test/lib/thrift_test.dart
 	cd gen-dart/thrift_test; ${DARTPUB} get
diff --git a/test/erl/Makefile.am b/test/erl/Makefile.am
index 145a763..5bc90fa 100644
--- a/test/erl/Makefile.am
+++ b/test/erl/Makefile.am
@@ -25,7 +25,7 @@
 	for f in $(THRIFT_FILES) ; do \
 	  $(THRIFT) --gen $(ERL_FLAG) -o src $$f ; \
 	done ; \
-	$(THRIFT) --gen $(ERL_FLAG) -o src ../ThriftTest.thrift
+	$(THRIFT) --gen $(ERL_FLAG) -o src ../v0.16/ThriftTest.thrift
 	touch .generated
 
 precross: .generated
diff --git a/test/go/Makefile.am b/test/go/Makefile.am
index ef00df3..32c2be0 100644
--- a/test/go/Makefile.am
+++ b/test/go/Makefile.am
@@ -26,7 +26,7 @@
 endif
 
 THRIFTCMD = $(THRIFT) -out src/gen --gen go:thrift_import=github.com/apache/thrift/lib/go/thrift,package_prefix=github.com/apache/thrift/test/go/src/gen/$(COMPILER_EXTRAFLAG)
-THRIFTTEST = $(top_srcdir)/test/ThriftTest.thrift
+THRIFTTEST = $(top_srcdir)/test/v0.16/ThriftTest.thrift
 
 precross: bin/testclient bin/testserver
 
diff --git a/test/lua/Makefile.am b/test/lua/Makefile.am
index b2683e1..a3ab3e2 100644
--- a/test/lua/Makefile.am
+++ b/test/lua/Makefile.am
@@ -20,7 +20,7 @@
 THRIFT = $(top_builddir)/compiler/cpp/thrift
 
 # Remove "MapType =" line to ignore some map bug for now
-stubs: ../ThriftTest.thrift $(THRIFT)
+stubs: ../v0.16/ThriftTest.thrift $(THRIFT)
 	$(THRIFT) --gen lua $<
 	$(SED) -i.bak 's/MapType =//g' gen-lua/ThriftTest_ttypes.lua
 	$(RM) gen-lua/ThriftTest_ttypes.lua.bak
diff --git a/test/perl/Makefile.am b/test/perl/Makefile.am
index 1dbaf28..589fe62 100644
--- a/test/perl/Makefile.am
+++ b/test/perl/Makefile.am
@@ -17,8 +17,8 @@
 # under the License.
 #
 
-stubs: ../ThriftTest.thrift
-	$(THRIFT) --gen perl ../ThriftTest.thrift
+stubs: ../v0.16/ThriftTest.thrift
+	$(THRIFT) --gen perl ../v0.16/ThriftTest.thrift
 
 precross: stubs
 
diff --git a/test/php/Makefile.am b/test/php/Makefile.am
index 9e13aff..b1ac686 100644
--- a/test/php/Makefile.am
+++ b/test/php/Makefile.am
@@ -17,11 +17,11 @@
 # under the License.
 #
 
-stubs: ../ThriftTest.thrift
-	$(THRIFT) --gen php ../ThriftTest.thrift
-	$(THRIFT) --gen php:inlined ../ThriftTest.thrift
+stubs: ../v0.16/ThriftTest.thrift
+	$(THRIFT) --gen php ../v0.16/ThriftTest.thrift
+	$(THRIFT) --gen php:inlined ../v0.16/ThriftTest.thrift
 	$(MKDIR_P) gen-php-classmap
-	$(THRIFT) -out gen-php-classmap --gen php:classmap ../ThriftTest.thrift
+	$(THRIFT) -out gen-php-classmap --gen php:classmap ../v0.16/ThriftTest.thrift
 
 php_ext_dir:
 	mkdir -p php_ext_dir
diff --git a/test/py.tornado/Makefile.am b/test/py.tornado/Makefile.am
index e962f0c..3b78793 100644
--- a/test/py.tornado/Makefile.am
+++ b/test/py.tornado/Makefile.am
@@ -19,8 +19,8 @@
 
 THRIFT = $(top_srcdir)/compiler/cpp/thrift
 
-thrift_gen: ../ThriftTest.thrift ../SmallTest.thrift
-	$(THRIFT) --gen py:tornado ../ThriftTest.thrift
+thrift_gen: ../v0.16/ThriftTest.thrift ../SmallTest.thrift
+	$(THRIFT) --gen py:tornado ../v0.16/ThriftTest.thrift
 	$(THRIFT) --gen py:tornado ../SmallTest.thrift
 
 check: thrift_gen
diff --git a/test/py.twisted/Makefile.am b/test/py.twisted/Makefile.am
index dee8e2f..bd0cdb1 100644
--- a/test/py.twisted/Makefile.am
+++ b/test/py.twisted/Makefile.am
@@ -19,8 +19,8 @@
 
 TRIAL ?= trial
 
-stubs: ../ThriftTest.thrift ../SmallTest.thrift
-	$(THRIFT) --gen py:twisted ../ThriftTest.thrift
+stubs: ../v0.16/ThriftTest.thrift ../SmallTest.thrift
+	$(THRIFT) --gen py:twisted ../v0.16/ThriftTest.thrift
 	$(THRIFT) --gen py:twisted ../SmallTest.thrift
 
 check: stubs
diff --git a/test/py/Makefile.am b/test/py/Makefile.am
index 57529d7..7c78f17 100644
--- a/test/py/Makefile.am
+++ b/test/py/Makefile.am
@@ -71,35 +71,51 @@
 
 
 gen-py/%/__init__.py: ../%.thrift $(THRIFT)
-	$(THRIFT) --gen py  $<
+	test -f ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py  ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py  $<
 
 gen-py-default/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-default || $(MKDIR_P) gen-py-default
-	$(THRIFT) --gen py -out gen-py-default $<
+	test -f ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py -out gen-py-default ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py -out gen-py-default $<
 
 gen-py-slots/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-slots || $(MKDIR_P) gen-py-slots
-	$(THRIFT) --gen py:slots -out gen-py-slots $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:slots -out gen-py-slots ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:slots -out gen-py-slots $<
 
 gen-py-oldstyle/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-oldstyle || $(MKDIR_P) gen-py-oldstyle
-	$(THRIFT) --gen py:old_style -out gen-py-oldstyle $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:old_style -out gen-py-oldstyle ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:old_style -out gen-py-oldstyle $<
 
 gen-py-no_utf8strings/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-no_utf8strings || $(MKDIR_P) gen-py-no_utf8strings
-	$(THRIFT) --gen py:no_utf8strings -out gen-py-no_utf8strings $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:no_utf8strings -out gen-py-no_utf8strings ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:no_utf8strings -out gen-py-no_utf8strings $<
 
 gen-py-dynamic/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-dynamic || $(MKDIR_P) gen-py-dynamic
-	$(THRIFT) --gen py:dynamic -out gen-py-dynamic $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:dynamic -out gen-py-dynamic ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:dynamic -out gen-py-dynamic $<
 
 gen-py-dynamicslots/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-dynamicslots || $(MKDIR_P) gen-py-dynamicslots
-	$(THRIFT) --gen py:dynamic,slots -out gen-py-dynamicslots $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:dynamic,slots -out gen-py-dynamicslots ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:dynamic,slots -out gen-py-dynamicslots $<
 
 gen-py-enum/%/__init__.py: ../%.thrift $(THRIFT)
 	test -d gen-py-enum || $(MKDIR_P) gen-py-enum
-	$(THRIFT) --gen py:enum -out gen-py-enum $<
+	test ../v0.16/$(notdir $<) \
+	&& $(THRIFT) --gen py:enum -out gen-py-enum ../v0.16/$(notdir $<) \
+	|| $(THRIFT) --gen py:enum -out gen-py-enum $<
 
 clean-local:
 	$(RM) -r build
diff --git a/test/py/generate.cmake b/test/py/generate.cmake
index e6a6735..eb6f111 100644
--- a/test/py/generate.cmake
+++ b/test/py/generate.cmake
@@ -7,21 +7,21 @@
   endif()
 endmacro(GENERATE)
 
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py gen-py-default)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:slots gen-py-slots)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:old_style gen-py-oldstyle)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:no_utf8strings gen-py-no_utf8strings)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:dynamic gen-py-dynamic)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:dynamic,slots gen-py-dynamicslots)
-generate(${MY_PROJECT_DIR}/test/ThriftTest.thrift py:enum gen-py-enum)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py gen-py-default)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:slots gen-py-slots)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:old_style gen-py-oldstyle)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:no_utf8strings gen-py-no_utf8strings)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:dynamic gen-py-dynamic)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:dynamic,slots gen-py-dynamicslots)
+generate(${MY_PROJECT_DIR}/test/v0.16/ThriftTest.thrift py:enum gen-py-enum)
 
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py gen-py-default)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:slots gen-py-slots)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:old_style gen-py-oldstyle)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:no_utf8strings gen-py-no_utf8strings)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:dynamic gen-py-dynamic)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:dynamic,slots gen-py-dynamicslots)
-generate(${MY_PROJECT_DIR}/test/DebugProtoTest.thrift py:enum gen-py-enum)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py gen-py-default)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:slots gen-py-slots)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:old_style gen-py-oldstyle)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:no_utf8strings gen-py-no_utf8strings)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:dynamic gen-py-dynamic)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:dynamic,slots gen-py-dynamicslots)
+generate(${MY_PROJECT_DIR}/test/v0.16/DebugProtoTest.thrift py:enum gen-py-enum)
 
 generate(${MY_PROJECT_DIR}/test/DoubleConstantsTest.thrift py gen-py-default)
 generate(${MY_PROJECT_DIR}/test/DoubleConstantsTest.thrift py:slots gen-py-slots)
diff --git a/test/rb/Makefile.am b/test/rb/Makefile.am
index 3910934..5dd7559 100644
--- a/test/rb/Makefile.am
+++ b/test/rb/Makefile.am
@@ -17,8 +17,8 @@
 # under the License.
 #
 
-stubs: $(THRIFT) ../ThriftTest.thrift ../SmallTest.thrift
-	$(THRIFT) --gen rb ../ThriftTest.thrift
+stubs: $(THRIFT) ../v0.16/ThriftTest.thrift ../SmallTest.thrift
+	$(THRIFT) --gen rb ../v0.16/ThriftTest.thrift
 	$(THRIFT) --gen rb ../SmallTest.thrift
 	$(THRIFT) --gen rb ../Recursive.thrift
 
diff --git a/test/rs/Makefile.am b/test/rs/Makefile.am
index 78db5ee..103f80c 100644
--- a/test/rs/Makefile.am
+++ b/test/rs/Makefile.am
@@ -17,8 +17,8 @@
 # under the License.
 #
 
-stubs: ../ThriftTest.thrift
-	$(THRIFT) -I ./thrifts -out src --gen rs ../ThriftTest.thrift
+stubs: ../v0.16/ThriftTest.thrift
+	$(THRIFT) -I ./thrifts -out src --gen rs ../v0.16/ThriftTest.thrift
 
 precross: stubs
 	$(CARGO) build
diff --git a/test/v0.16/ConstantsDemo.thrift b/test/v0.16/ConstantsDemo.thrift
new file mode 100644
index 0000000..204e805
--- /dev/null
+++ b/test/v0.16/ConstantsDemo.thrift
@@ -0,0 +1,76 @@
+/*
+ * 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 cpp yozone
+namespace erl consts_
+namespace haxe constantsDemo
+
+struct thing {
+  1: i32 hello,
+  2: i32 goodbye
+}
+
+enum enumconstants {
+  ONE = 1,
+  TWO = 2
+}
+
+// struct thing2 {
+//   /** standard docstring */
+//   1: enumconstants val = TWO
+// }
+
+typedef i32 myIntType
+const myIntType myInt = 3
+
+//const map<enumconstants,string> GEN_ENUM_NAMES = {ONE : "HOWDY", TWO: "PARTNER"}
+
+const i32 hex_const = 0x0001F
+const i32 negative_hex_constant = -0x0001F
+
+const i32 GEN_ME = -3523553
+const double GEn_DUB = 325.532
+const double GEn_DU = 085.2355
+const string GEN_STRING = "asldkjasfd"
+
+const double e10 = 1e10   // fails with 0.9.3 and earlier
+const double e11 = -1e10  
+
+const map<i32,i32> GEN_MAP = { 35532 : 233, 43523 : 853 }
+const list<i32> GEN_LIST = [ 235235, 23598352, 3253523 ]
+
+const map<i32, map<i32, i32>> GEN_MAPMAP = { 235 : { 532 : 53255, 235:235}}
+
+const map<string,i32> GEN_MAP2 = { "hello" : 233, "lkj98d" : 853, 'lkjsdf' : 098325 }
+
+const thing GEN_THING = { 'hello' : 325, 'goodbye' : 325352 }
+
+const map<i32,thing> GEN_WHAT = { 35 : { 'hello' : 325, 'goodbye' : 325352 } }
+
+const set<i32> GEN_SET = [ 235, 235, 53235 ]
+
+exception Blah {
+  1:  i32 bing }
+
+exception Gak {}
+
+service yowza {
+  void blingity(),
+  i32 blangity() throws (1: Blah hoot )
+}
diff --git a/test/v0.16/DebugProtoTest.thrift b/test/v0.16/DebugProtoTest.thrift
new file mode 100644
index 0000000..5d0face
--- /dev/null
+++ b/test/v0.16/DebugProtoTest.thrift
@@ -0,0 +1,393 @@
+/*
+ * 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 c_glib TTest
+namespace cpp thrift.test.debug
+namespace java thrift.test
+namespace rb thrift.test
+
+struct Doubles {
+ 1: double nan,
+ 2: double inf,
+ 3: double neginf,
+ 4: double repeating,
+ 5: double big,
+ 6: double tiny,
+ 7: double zero,
+ 8: double negzero,
+}
+
+struct OneOfEach {
+  1: bool im_true,
+  2: bool im_false,
+  3: i8 a_bite = 0x7f,
+  4: i16 integer16 = 0x7fff,
+  5: i32 integer32,
+  6: i64 integer64 = 10000000000,
+  7: double double_precision,
+  8: string some_characters,
+  9: string zomg_unicode,
+  10: bool what_who,
+  11: binary base64,
+  12: list<i8> byte_list = [1, 2, 3],
+  13: list<i16> i16_list = [1,2,3],
+  14: list<i64> i64_list = [1,2,3]
+}
+
+struct Bonk {
+  1: i32 type,
+  2: string message,
+}
+
+struct Nesting {
+  1: Bonk my_bonk,
+  2: OneOfEach my_ooe,
+}
+
+struct HolyMoley {
+  1: list<OneOfEach> big,
+  2: set<list<string> (python.immutable = "")> contain,
+  3: map<string,list<Bonk>> bonks,
+}
+
+struct Backwards {
+  2: i32 first_tag2,
+  1: i32 second_tag1,
+}
+
+struct Empty {
+} (
+  python.immutable = "",
+)
+
+struct Wrapper {
+  1: Empty foo
+} (
+  python.immutable = "",
+)
+
+struct RandomStuff {
+  1: i32 a,
+  2: i32 b,
+  3: i32 c,
+  4: i32 d,
+  5: list<i32> myintlist,
+  6: map<i32,Wrapper> maps,
+  7: i64 bigint,
+  8: double triple,
+}
+
+struct Base64 {
+  1: i32 a,
+  2: binary b1,
+  3: binary b2,
+  4: binary b3,
+  5: binary b4,
+  6: binary b5,
+  7: binary b6,
+}
+
+struct CompactProtoTestStruct {
+  // primitive fields
+  1: i8     a_byte;
+  2: i16    a_i16;
+  3: i32    a_i32;
+  4: i64    a_i64;
+  5: double a_double;
+  6: string a_string;
+  7: binary a_binary;
+  8: bool   true_field;
+  9: bool   false_field;
+  10: Empty empty_struct_field;
+
+  // primitives in lists
+  11: list<i8>      byte_list;
+  12: list<i16>     i16_list;
+  13: list<i32>     i32_list;
+  14: list<i64>     i64_list;
+  15: list<double>  double_list;
+  16: list<string>  string_list;
+  17: list<binary>  binary_list;
+  18: list<bool>    boolean_list;
+  19: list<Empty>   struct_list;
+
+  // primitives in sets
+  20: set<i8>       byte_set;
+  21: set<i16>      i16_set;
+  22: set<i32>      i32_set;
+  23: set<i64>      i64_set;
+  24: set<double>   double_set;
+  25: set<string>   string_set;
+  26: set<binary>   binary_set;
+  27: set<bool>     boolean_set;
+  28: set<Empty>    struct_set;
+
+  // maps
+  // primitives as keys
+  29: map<i8, i8>               byte_byte_map;
+  30: map<i16, i8>              i16_byte_map;
+  31: map<i32, i8>              i32_byte_map;
+  32: map<i64, i8>              i64_byte_map;
+  33: map<double, i8>           double_byte_map;
+  34: map<string, i8>           string_byte_map;
+  35: map<binary, i8>           binary_byte_map;
+  36: map<bool, i8>             boolean_byte_map;
+  // primitives as values
+  37: map<i8, i16>              byte_i16_map;
+  38: map<i8, i32>              byte_i32_map;
+  39: map<i8, i64>              byte_i64_map;
+  40: map<i8, double>           byte_double_map;
+  41: map<i8, string>           byte_string_map;
+  42: map<i8, binary>           byte_binary_map;
+  43: map<i8, bool>             byte_boolean_map;
+  // collections as keys
+  44: map<list<i8> (python.immutable = ""), i8>       list_byte_map;
+  45: map<set<i8> (python.immutable = ""), i8>        set_byte_map;
+  46: map<map<i8,i8> (python.immutable = ""), i8>     map_byte_map;
+  // collections as values
+  47: map<i8, map<i8,i8>>     byte_map_map;
+  48: map<i8, set<i8>>        byte_set_map;
+  49: map<i8, list<i8>>       byte_list_map;
+  
+  // large field IDs
+  500 : i64  field500;
+  5000 : i64  field5000;
+  20000 : i64  field20000;
+}
+
+// To be used to test the serialization of an empty map
+struct SingleMapTestStruct {
+  1: required map<i32, i32>       i32_map;
+}
+
+const CompactProtoTestStruct COMPACT_TEST = {
+  'a_byte'             : 127,
+  'a_i16'              : 32000,
+  'a_i32'              : 1000000000,
+  'a_i64'              : 0xffffffffff,
+  'a_double'           : 5.6789,
+  'a_string'           : "my string",
+//'a_binary,'
+  'true_field'         : 1,
+  'false_field'        : 0,
+  'empty_struct_field' : {},
+  'byte_list'          : [-127, -1, 0, 1, 127],
+  'i16_list'           : [-1, 0, 1, 0x7fff],
+  'i32_list'           : [-1, 0, 0xff, 0xffff, 0xffffff, 0x7fffffff],
+  'i64_list'           : [-1, 0, 0xff, 0xffff, 0xffffff, 0xffffffff, 0xffffffffff, 0xffffffffffff, 0xffffffffffffff, 0x7fffffffffffffff],
+  'double_list'        : [0.1, 0.2, 0.3],
+  'string_list'        : ["first", "second", "third"],
+//'binary_list,'
+  'boolean_list'       : [1, 1, 1, 0, 0, 0],
+  'struct_list'        : [{}, {}],
+  'byte_set'           : [-127, -1, 0, 1, 127],
+  'i16_set'            : [-1, 0, 1, 0x7fff],
+  'i32_set'            : [1, 2, 3],
+  'i64_set'            : [-1, 0, 0xff, 0xffff, 0xffffff, 0xffffffff, 0xffffffffff, 0xffffffffffff, 0xffffffffffffff, 0x7fffffffffffffff],
+  'double_set'         : [0.1, 0.2, 0.3],
+  'string_set'         : ["first", "second", "third"],
+//'binary_set,'
+  'boolean_set'        : [1, 0],
+  'struct_set'         : [{}],
+  'byte_byte_map'      : {1 : 2},
+  'i16_byte_map'       : {1 : 1, -1 : 1, 0x7fff : 1},
+  'i32_byte_map'       : {1 : 1, -1 : 1, 0x7fffffff : 1},
+  'i64_byte_map'       : {0 : 1,  1 : 1, -1 : 1, 0x7fffffffffffffff : 1},
+  'double_byte_map'    : {-1.1 : 1, 1.1 : 1},
+  'string_byte_map'    : {"first" : 1, "second" : 2, "third" : 3, "" : 0},
+//'binary_byte_map,'
+  'boolean_byte_map'   : {1 : 1, 0 : 0},
+  'byte_i16_map'       : {1 : 1, 2 : -1, 3 : 0x7fff},
+  'byte_i32_map'       : {1 : 1, 2 : -1, 3 : 0x7fffffff},
+  'byte_i64_map'       : {1 : 1, 2 : -1, 3 : 0x7fffffffffffffff},
+  'byte_double_map'    : {1 : 0.1, 2 : -0.1, 3 : 1000000.1},
+  'byte_string_map'    : {1 : "", 2 : "blah", 3 : "loooooooooooooong string"},
+//'byte_binary_map,'
+  'byte_boolean_map'   : {1 : 1, 2 : 0},
+  'list_byte_map'      : {[1, 2, 3] : 1, [0, 1] : 2, [] : 0},
+  'set_byte_map'       : {[1, 2, 3] : 1, [0, 1] : 2, [] : 0},
+  'map_byte_map'       : {{1 : 1} : 1, {2 : 2} : 2, {} : 0},
+  'byte_map_map'       : {0 : {}, 1 : {1 : 1}, 2 : {1 : 1, 2 : 2}},
+  'byte_set_map'       : {0 : [], 1 : [1], 2 : [1, 2]},
+  'byte_list_map'      : {0 : [], 1 : [1], 2 : [1, 2]},
+  
+  'field500'           : 500,
+  'field5000'          : 5000,
+  'field20000'         : 20000,
+}
+
+
+const i32 MYCONST = 2
+
+
+exception ExceptionWithAMap {
+  1: string blah;
+  2: map<string, string> map_field;
+}
+
+exception MutableException {
+  1: string msg;
+} (python.immutable = "false")
+
+exception ExceptionWithoutFields {}
+
+service ServiceForExceptionWithAMap {
+  void methodThatThrowsAnException() throws (1: ExceptionWithAMap xwamap);
+}
+
+service Srv {
+  i32 Janky(1: i32 arg);
+
+  // return type only methods
+
+  void voidMethod();
+  i32 primitiveMethod();
+  CompactProtoTestStruct structMethod();
+
+  void methodWithDefaultArgs(1: i32 something = MYCONST);
+
+  oneway void onewayMethod();
+
+  bool declaredExceptionMethod(1: bool shouldThrow) throws (1: ExceptionWithAMap xwamap);
+}
+
+service Inherited extends Srv {
+  i32 identity(1: i32 arg)
+}
+
+service EmptyService {}
+
+// The only purpose of this thing is to increase the size of the generated code
+// so that ZlibTest has more highly compressible data to play with.
+struct BlowUp {
+  1: map<list<i32>(python.immutable = ""),set<map<i32,string> (python.immutable = "")>> b1;
+  2: map<list<i32>(python.immutable = ""),set<map<i32,string> (python.immutable = "")>> b2;
+  3: map<list<i32>(python.immutable = ""),set<map<i32,string> (python.immutable = "")>> b3;
+  4: map<list<i32>(python.immutable = ""),set<map<i32,string> (python.immutable = "")>> b4;
+}
+
+
+struct ReverseOrderStruct {
+  4: string first;
+  3: i16 second;
+  2: i32 third;
+  1: i64 fourth;
+}
+
+service ReverseOrderService {
+  void myMethod(4: string first, 3: i16 second, 2: i32 third, 1: i64 fourth);
+}
+
+enum SomeEnum {
+  ONE = 1
+  TWO = 2
+}
+
+/** This is a docstring on a constant! */
+const SomeEnum MY_SOME_ENUM = SomeEnum.ONE
+
+const SomeEnum MY_SOME_ENUM_1 = 1
+/*const SomeEnum MY_SOME_ENUM_2 = 7*/
+
+const map<SomeEnum,SomeEnum> MY_ENUM_MAP = {
+  SomeEnum.ONE : SomeEnum.TWO
+}
+
+struct StructWithSomeEnum {
+  1: SomeEnum blah;
+}
+
+const map<SomeEnum,StructWithSomeEnum> EXTRA_CRAZY_MAP = {
+  SomeEnum.ONE : {"blah" : SomeEnum.TWO}
+}
+
+union TestUnion {
+  /**
+   * A doc string
+   */
+  1: string string_field;
+  2: i32 i32_field;
+  3: OneOfEach struct_field;
+  4: list<RandomStuff> struct_list;
+  5: i32 other_i32_field;
+  6: SomeEnum enum_field;
+  7: set<i32> i32_set;
+  8: map<i32, i32> i32_map;
+}
+
+union TestUnionMinusStringField {
+  2: i32 i32_field;
+  3: OneOfEach struct_field;
+  4: list<RandomStuff> struct_list;
+  5: i32 other_i32_field;
+  6: SomeEnum enum_field;
+  7: set<i32> i32_set;
+  8: map<i32, i32> i32_map;
+}
+
+union ComparableUnion {
+  1: string string_field;
+  2: binary binary_field;
+}
+
+struct StructWithAUnion {
+  1: TestUnion test_union;
+}
+
+struct PrimitiveThenStruct {
+  1: i32 blah;
+  2: i32 blah2;
+  3: Backwards bw;
+}
+
+typedef map<i32,i32> SomeMap
+
+struct StructWithASomemap {
+  1: required SomeMap somemap_field;
+}
+
+struct BigFieldIdStruct {
+  1: string field1;
+  45: string field2;
+}
+
+struct BreaksRubyCompactProtocol {
+  1: string field1;
+  2: BigFieldIdStruct field2;
+  3: i32 field3;
+}
+
+struct TupleProtocolTestStruct {
+  optional i32 field1;
+  optional i32 field2;
+  optional i32 field3;
+  optional i32 field4;
+  optional i32 field5;
+  optional i32 field6;
+  optional i32 field7;
+  optional i32 field8;
+  optional i32 field9;
+  optional i32 field10;
+  optional i32 field11;
+  optional i32 field12;
+}
+
+struct ListDoublePerf {
+  1: list<double> field;
+}
diff --git a/test/v0.16/ThriftTest.thrift b/test/v0.16/ThriftTest.thrift
new file mode 100644
index 0000000..4a1045f
--- /dev/null
+++ b/test/v0.16/ThriftTest.thrift
@@ -0,0 +1,418 @@
+/*
+ * 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.
+ *
+ * Contains some contributions under the Thrift Software License.
+ * Please see doc/old-thrift-license.txt in the Thrift distribution for
+ * details.
+ */
+
+namespace c_glib TTest
+namespace cpp thrift.test
+namespace delphi Thrift.Test
+namespace go thrifttest
+namespace java thrift.test
+namespace js ThriftTest
+namespace lua ThriftTest
+namespace netstd ThriftTest
+namespace perl ThriftTest
+namespace php ThriftTest
+namespace py ThriftTest
+namespace py.twisted ThriftTest
+namespace rb Thrift.Test
+namespace st ThriftTest
+namespace xsd test (uri = 'http://thrift.apache.org/ns/ThriftTest')
+
+// Presence of namespaces and sub-namespaces for which there is
+// no generator should compile with warnings only
+namespace noexist ThriftTest
+namespace cpp.noexist ThriftTest
+
+namespace * thrift.test
+
+/**
+ * Docstring!
+ */
+enum Numberz
+{
+  ONE = 1,
+  TWO,
+  THREE,
+  FIVE = 5,
+  SIX,
+  EIGHT = 8
+}
+
+const Numberz myNumberz = Numberz.ONE;
+// the following is expected to fail:
+// const Numberz urNumberz = ONE;
+
+typedef i64 UserId
+
+struct Bonk
+{
+  1: string message,
+  2: i32 type
+}
+
+typedef map<string,Bonk> MapType
+
+struct Bools {
+  1: bool im_true,
+  2: bool im_false,
+}
+
+struct Xtruct
+{
+  1:  string string_thing,
+  4:  i8     byte_thing,
+  9:  i32    i32_thing,
+  11: i64    i64_thing
+}
+
+struct Xtruct2
+{
+  1: i8     byte_thing,  // used to be byte, hence the name
+  2: Xtruct struct_thing,
+  3: i32    i32_thing
+}
+
+struct Xtruct3
+{
+  1:  string string_thing,
+  4:  i32    changed,
+  9:  i32    i32_thing,
+  11: i64    i64_thing
+}
+
+
+struct Insanity
+{
+  1: map<Numberz, UserId> userMap,
+  2: list<Xtruct> xtructs
+} (python.immutable= "")
+
+struct CrazyNesting {
+  1: string string_field,
+  2: optional set<Insanity> set_field,
+  // Do not insert line break as test/go/Makefile.am is removing this line with pattern match
+  3: required list<map<set<i32> (python.immutable = ""), map<i32,set<list<map<Insanity,string>(python.immutable = "")> (python.immutable = "")>>>> list_field,
+  4: binary binary_field
+}
+
+union SomeUnion {
+  1: map<Numberz, UserId> map_thing,
+  2: string string_thing,
+  3: i32 i32_thing,
+  4: Xtruct3 xtruct_thing,
+  5: Insanity insanity_thing
+}
+
+exception Xception {
+  1: i32 errorCode,
+  2: string message
+}
+
+exception Xception2 {
+  1: i32 errorCode,
+  2: Xtruct struct_thing
+}
+
+struct EmptyStruct {}
+
+struct OneField {
+  1: EmptyStruct field
+}
+
+service ThriftTest
+{
+  /**
+   * Prints "testVoid()" and returns nothing.
+   */
+  void         testVoid(),
+
+  /**
+   * Prints 'testString("%s")' with thing as '%s'
+   * @param string thing - the string to print
+   * @return string - returns the string 'thing'
+   */
+  string       testString(1: string thing),
+
+  /**
+   * Prints 'testBool("%s")' where '%s' with thing as 'true' or 'false'
+   * @param bool  thing - the bool data to print
+   * @return bool  - returns the bool 'thing'
+   */
+  bool         testBool(1: bool thing),
+
+  /**
+   * Prints 'testByte("%d")' with thing as '%d'
+   * The types i8 and byte are synonyms, use of i8 is encouraged, byte still exists for the sake of compatibility.
+   * @param byte thing - the i8/byte to print
+   * @return i8 - returns the i8/byte 'thing'
+   */
+  i8           testByte(1: i8 thing),
+
+  /**
+   * Prints 'testI32("%d")' with thing as '%d'
+   * @param i32 thing - the i32 to print
+   * @return i32 - returns the i32 'thing'
+   */
+  i32          testI32(1: i32 thing),
+
+  /**
+   * Prints 'testI64("%d")' with thing as '%d'
+   * @param i64 thing - the i64 to print
+   * @return i64 - returns the i64 'thing'
+   */
+  i64          testI64(1: i64 thing),
+
+  /**
+   * Prints 'testDouble("%f")' with thing as '%f'
+   * @param double thing - the double to print
+   * @return double - returns the double 'thing'
+   */
+  double       testDouble(1: double thing),
+
+  /**
+   * Prints 'testBinary("%s")' where '%s' is a hex-formatted string of thing's data
+   * @param binary  thing - the binary data to print
+   * @return binary  - returns the binary 'thing'
+   */
+  binary       testBinary(1: binary thing),
+
+  /**
+   * Prints 'testStruct("{%s}")' where thing has been formatted into a string of comma separated values
+   * @param Xtruct thing - the Xtruct to print
+   * @return Xtruct - returns the Xtruct 'thing'
+   */
+  Xtruct       testStruct(1: Xtruct thing),
+
+  /**
+   * Prints 'testNest("{%s}")' where thing has been formatted into a string of the nested struct
+   * @param Xtruct2 thing - the Xtruct2 to print
+   * @return Xtruct2 - returns the Xtruct2 'thing'
+   */
+  Xtruct2      testNest(1: Xtruct2 thing),
+
+  /**
+   * Prints 'testMap("{%s")' where thing has been formatted into a string of 'key => value' pairs
+   *  separated by commas and new lines
+   * @param map<i32,i32> thing - the map<i32,i32> to print
+   * @return map<i32,i32> - returns the map<i32,i32> 'thing'
+   */
+  map<i32,i32> testMap(1: map<i32,i32> thing),
+
+  /**
+   * Prints 'testStringMap("{%s}")' where thing has been formatted into a string of 'key => value' pairs
+   *  separated by commas and new lines
+   * @param map<string,string> thing - the map<string,string> to print
+   * @return map<string,string> - returns the map<string,string> 'thing'
+   */
+  map<string,string> testStringMap(1: map<string,string> thing),
+
+  /**
+   * Prints 'testSet("{%s}")' where thing has been formatted into a string of values
+   *  separated by commas and new lines
+   * @param set<i32> thing - the set<i32> to print
+   * @return set<i32> - returns the set<i32> 'thing'
+   */
+  set<i32>     testSet(1: set<i32> thing),
+
+  /**
+   * Prints 'testList("{%s}")' where thing has been formatted into a string of values
+   *  separated by commas and new lines
+   * @param list<i32> thing - the list<i32> to print
+   * @return list<i32> - returns the list<i32> 'thing'
+   */
+  list<i32>    testList(1: list<i32> thing),
+
+  /**
+   * Prints 'testEnum("%d")' where thing has been formatted into its numeric value
+   * @param Numberz thing - the Numberz to print
+   * @return Numberz - returns the Numberz 'thing'
+   */
+  Numberz      testEnum(1: Numberz thing),
+
+  /**
+   * Prints 'testTypedef("%d")' with thing as '%d'
+   * @param UserId thing - the UserId to print
+   * @return UserId - returns the UserId 'thing'
+   */
+  UserId       testTypedef(1: UserId thing),
+
+  /**
+   * Prints 'testMapMap("%d")' with hello as '%d'
+   * @param i32 hello - the i32 to print
+   * @return map<i32,map<i32,i32>> - returns a dictionary with these values:
+   *   {-4 => {-4 => -4, -3 => -3, -2 => -2, -1 => -1, }, 4 => {1 => 1, 2 => 2, 3 => 3, 4 => 4, }, }
+   */
+  map<i32,map<i32,i32>> testMapMap(1: i32 hello),
+
+  /**
+   * So you think you've got this all worked out, eh?
+   *
+   * Creates a map with these values and prints it out:
+   *   { 1 => { 2 => argument,
+   *            3 => argument,
+   *          },
+   *     2 => { 6 => <empty Insanity struct>, },
+   *   }
+   * @return map<UserId, map<Numberz,Insanity>> - a map with the above values
+   */
+  map<UserId, map<Numberz,Insanity>> testInsanity(1: Insanity argument),
+
+  /**
+   * Prints 'testMulti()'
+   * @param i8 arg0 -
+   * @param i32 arg1 -
+   * @param i64 arg2 -
+   * @param map<i16, string> arg3 -
+   * @param Numberz arg4 -
+   * @param UserId arg5 -
+   * @return Xtruct - returns an Xtruct with string_thing = "Hello2, byte_thing = arg0, i32_thing = arg1
+   *    and i64_thing = arg2
+   */
+  Xtruct testMulti(1: i8 arg0, 2: i32 arg1, 3: i64 arg2, 4: map<i16, string> arg3, 5: Numberz arg4, 6: UserId arg5),
+
+  /**
+   * Print 'testException(%s)' with arg as '%s'
+   * @param string arg - a string indication what type of exception to throw
+   * if arg == "Xception" throw Xception with errorCode = 1001 and message = arg
+   * else if arg == "TException" throw TException
+   * else do not throw anything
+   */
+  void testException(1: string arg) throws(1: Xception err1),
+
+  /**
+   * Print 'testMultiException(%s, %s)' with arg0 as '%s' and arg1 as '%s'
+   * @param string arg - a string indicating what type of exception to throw
+   * if arg0 == "Xception" throw Xception with errorCode = 1001 and message = "This is an Xception"
+   * else if arg0 == "Xception2" throw Xception2 with errorCode = 2002 and struct_thing.string_thing = "This is an Xception2"
+   * else do not throw anything
+   * @return Xtruct - an Xtruct with string_thing = arg1
+   */
+  Xtruct testMultiException(1: string arg0, 2: string arg1) throws(1: Xception err1, 2: Xception2 err2)
+
+  /**
+   * Print 'testOneway(%d): Sleeping...' with secondsToSleep as '%d'
+   * sleep 'secondsToSleep'
+   * Print 'testOneway(%d): done sleeping!' with secondsToSleep as '%d'
+   * @param i32 secondsToSleep - the number of seconds to sleep
+   */
+  oneway void testOneway(1:i32 secondsToSleep)
+}
+
+service SecondService
+{
+  /**
+   * Prints 'testString("%s")' with thing as '%s'
+   * @param string thing - the string to print
+   * @return string - returns the string 'thing'
+   */
+  string secondtestString(1: string thing)
+}
+
+struct VersioningTestV1 {
+       1: i32 begin_in_both,
+       3: string old_string,
+       12: i32 end_in_both
+}
+
+struct VersioningTestV2 {
+       1: i32 begin_in_both,
+
+       2: i32 newint,
+       3: i8 newbyte,
+       4: i16 newshort,
+       5: i64 newlong,
+       6: double newdouble
+       7: Bonk newstruct,
+       8: list<i32> newlist,
+       9: set<i32> newset,
+       10: map<i32, i32> newmap,
+       11: string newstring,
+       12: i32 end_in_both
+}
+
+struct ListTypeVersioningV1 {
+       1: list<i32> myints;
+       2: string hello;
+}
+
+struct ListTypeVersioningV2 {
+       1: list<string> strings;
+       2: string hello;
+}
+
+struct GuessProtocolStruct {
+  7: map<string,string> map_field,
+}
+
+struct LargeDeltas {
+  1: Bools b1,
+  10: Bools b10,
+  100: Bools b100,
+  500: bool check_true,
+  1000: Bools b1000,
+  1500: bool check_false,
+  2000: VersioningTestV2 vertwo2000,
+  2500: set<string> a_set2500,
+  3000: VersioningTestV2 vertwo3000,
+  4000: list<i32> big_numbers
+}
+
+struct NestedListsI32x2 {
+  1: list<list<i32>> integerlist
+}
+struct NestedListsI32x3 {
+  1: list<list<list<i32>>> integerlist
+}
+struct NestedMixedx2 {
+  1: list<set<i32>> int_set_list
+  2: map<i32,set<string>> map_int_strset
+  3: list<map<i32,set<string>>> map_int_strset_list
+}
+struct ListBonks {
+  1: list<Bonk> bonk
+}
+struct NestedListsBonk {
+  1: list<list<list<Bonk>>> bonk
+}
+
+struct BoolTest {
+  1: optional bool b = true;
+  2: optional string s = "true";
+}
+
+struct StructA {
+  1: required string s;
+}
+
+struct StructB {
+  1: optional StructA aa;
+  2: required StructA ab;
+}
+
+struct OptionalSetDefaultTest {
+  1: optional set<string> with_default = [ "test" ]
+}
+
+struct OptionalBinary {
+  1: optional set<binary> bin_set = {}
+  2: optional map<binary,i32> bin_map = {}
+}