From d5304055ab2dc9eeda038f3b48b9d60a104d521f Mon Sep 17 00:00:00 2001
From: William Cheng <wing328hk@gmail.com>
Date: Sat, 9 May 2020 14:26:54 +0800
Subject: [PATCH] Minor improvements to the Lua client generator (#6219)

* minor improvement to lua client gen

* add new files
---
 bin/lua-petstore.sh                           |  2 +-
 bin/openapi3/lua-petstore.sh                  | 32 -----------------
 bin/utils/ensure-up-to-date                   |  1 +
 bin/windows/lua-petstore.bat                  |  2 +-
 docs/generators.md                            |  2 +-
 .../codegen/languages/LuaClientCodegen.java   |  6 ++++
 .../petstore/lua/.openapi-generator/VERSION   |  2 +-
 samples/client/petstore/lua/git_push.sh       | 14 +++++---
 .../petstore/lua/petstore-1.0.0-1.rockspec    |  2 ++
 .../petstore/lua/petstore/api/pet_api.lua     | 36 +++++++++++++++++--
 .../petstore/lua/petstore/api/store_api.lua   |  6 +++-
 .../petstore/lua/petstore/api/user_api.lua    | 18 +++++++++-
 .../lua/petstore/model/api_response.lua       |  2 +-
 .../petstore/lua/petstore/model/category.lua  |  2 +-
 .../lua/petstore/model/inline_object.lua      | 32 +++++++++++++++++
 .../lua/petstore/model/inline_object_1.lua    | 32 +++++++++++++++++
 .../petstore/lua/petstore/model/order.lua     |  2 +-
 .../petstore/lua/petstore/model/pet.lua       |  2 +-
 .../petstore/lua/petstore/model/tag.lua       |  2 +-
 .../petstore/lua/petstore/model/user.lua      |  2 +-
 .../lua/spec/inline_object_1_spec.lua         | 33 +++++++++++++++++
 .../petstore/lua/spec/inline_object_spec.lua  | 33 +++++++++++++++++
 22 files changed, 214 insertions(+), 51 deletions(-)
 delete mode 100755 bin/openapi3/lua-petstore.sh
 create mode 100644 samples/client/petstore/lua/petstore/model/inline_object.lua
 create mode 100644 samples/client/petstore/lua/petstore/model/inline_object_1.lua
 create mode 100644 samples/client/petstore/lua/spec/inline_object_1_spec.lua
 create mode 100644 samples/client/petstore/lua/spec/inline_object_spec.lua

diff --git a/bin/lua-petstore.sh b/bin/lua-petstore.sh
index 44b5cc38637..77e9589e85d 100755
--- a/bin/lua-petstore.sh
+++ b/bin/lua-petstore.sh
@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties $@"
-ags="generate -t modules/openapi-generator/src/main/resources/lua -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g lua -o samples/client/petstore/lua --additional-properties packageName=petstore $@"
+ags="generate -t modules/openapi-generator/src/main/resources/lua -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g lua -o samples/client/petstore/lua --additional-properties packageName=petstore $@"
 
 java $JAVA_OPTS -jar $executable $ags
diff --git a/bin/openapi3/lua-petstore.sh b/bin/openapi3/lua-petstore.sh
deleted file mode 100755
index f598c67aa02..00000000000
--- a/bin/openapi3/lua-petstore.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-
-SCRIPT="$0"
-echo "# START SCRIPT: $SCRIPT"
-
-while [ -h "$SCRIPT" ] ; do
-  ls=`ls -ld "$SCRIPT"`
-  link=`expr "$ls" : '.*-> \(.*\)$'`
-  if expr "$link" : '/.*' > /dev/null; then
-    SCRIPT="$link"
-  else
-    SCRIPT=`dirname "$SCRIPT"`/"$link"
-  fi
-done
-
-if [ ! -d "${APP_DIR}" ]; then
-  APP_DIR=`dirname "$SCRIPT"`/..
-  APP_DIR=`cd "${APP_DIR}"; pwd`
-fi
-
-executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
-
-if [ ! -f "$executable" ]
-then
-  mvn clean package
-fi
-
-# if you've executed sbt assembly previously it will use that instead.
-export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/lua -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g lua -o samples/client/petstore/lua --additional-properties packageName=petstore $@"
-
-java $JAVA_OPTS -jar $executable $ags
diff --git a/bin/utils/ensure-up-to-date b/bin/utils/ensure-up-to-date
index 03a2823557b..ff9425a3a62 100755
--- a/bin/utils/ensure-up-to-date
+++ b/bin/utils/ensure-up-to-date
@@ -88,6 +88,7 @@ declare -a samples=(
 "${root}/bin/scala-akka-petstore.sh"
 "${root}/bin/openapi3/scala-akka-petstore.sh"
 "${root}/bin/openapi3/scala-sttp-petstore.sh"
+"${root}/bin/lua-petstore.sh"
 )
 
 # Some special case generators may expect to be run as a stanalone process (e.g. modifying classpath)
diff --git a/bin/windows/lua-petstore.bat b/bin/windows/lua-petstore.bat
index db41d48b651..fe06bd229a5 100755
--- a/bin/windows/lua-petstore.bat
+++ b/bin/windows/lua-petstore.bat
@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M -DloggerPath=conf/log4j.properties
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g lua -o samples\client\petstore\lua
+set ags=generate -i modules\openapi-generator\src\test\resources\3_0\petstore.yaml -g lua -o samples\client\petstore\lua
 
 java %JAVA_OPTS% -jar %executable% %ags%
diff --git a/docs/generators.md b/docs/generators.md
index 6d7800fd694..4e63bd89256 100644
--- a/docs/generators.md
+++ b/docs/generators.md
@@ -40,7 +40,7 @@ The following generators are available:
 * [jmeter](generators/jmeter.md)  
 * [k6 (beta)](generators/k6.md)  
 * [kotlin](generators/kotlin.md)  
-* [lua](generators/lua.md)  
+* [lua (beta)](generators/lua.md)  
 * [nim (beta)](generators/nim.md)  
 * [objc](generators/objc.md)  
 * [ocaml](generators/ocaml.md)  
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
index 29e64126947..18330873bcf 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
@@ -21,6 +21,8 @@ import io.swagger.v3.oas.models.media.ArraySchema;
 import io.swagger.v3.oas.models.media.Schema;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -79,6 +81,10 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
                 )
         );
 
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+            .stability(Stability.BETA)
+            .build();
+
         outputFolder = "generated-code/lua";
         modelTemplateFiles.put("model.mustache", ".lua");
         apiTemplateFiles.put("api.mustache", ".lua");
diff --git a/samples/client/petstore/lua/.openapi-generator/VERSION b/samples/client/petstore/lua/.openapi-generator/VERSION
index 2c6109e5bb8..d99e7162d01 100644
--- a/samples/client/petstore/lua/.openapi-generator/VERSION
+++ b/samples/client/petstore/lua/.openapi-generator/VERSION
@@ -1 +1 @@
-3.3.4
\ No newline at end of file
+5.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/lua/git_push.sh b/samples/client/petstore/lua/git_push.sh
index 20057f67ade..ced3be2b0c7 100644
--- a/samples/client/petstore/lua/git_push.sh
+++ b/samples/client/petstore/lua/git_push.sh
@@ -1,11 +1,17 @@
 #!/bin/sh
 # ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
 #
-# Usage example: /bin/sh ./git_push.sh wing328 openapi-pestore-perl "minor update"
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-pestore-perl "minor update" "gitlab.com"
 
 git_user_id=$1
 git_repo_id=$2
 release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
 
 if [ "$git_user_id" = "" ]; then
     git_user_id="GIT_USER_ID"
@@ -37,9 +43,9 @@ if [ "$git_remote" = "" ]; then # git remote not defined
 
     if [ "$GIT_TOKEN" = "" ]; then
         echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
-        git remote add origin https://github.com/${git_user_id}/${git_repo_id}.git
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
     else
-        git remote add origin https://${git_user_id}:${GIT_TOKEN}@github.com/${git_user_id}/${git_repo_id}.git
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@${git_host}/${git_user_id}/${git_repo_id}.git
     fi
 
 fi
@@ -47,6 +53,6 @@ fi
 git pull origin master
 
 # Pushes (Forces) the changes in the local repository up to the remote repository
-echo "Git pushing to https://github.com/${git_user_id}/${git_repo_id}.git"
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
 git push origin master 2>&1 | grep -v 'To https'
 
diff --git a/samples/client/petstore/lua/petstore-1.0.0-1.rockspec b/samples/client/petstore/lua/petstore-1.0.0-1.rockspec
index d6b7f2f4ccf..7f8afbe3b89 100644
--- a/samples/client/petstore/lua/petstore-1.0.0-1.rockspec
+++ b/samples/client/petstore/lua/petstore-1.0.0-1.rockspec
@@ -28,6 +28,8 @@ build = {
 		["petstore.api.user_api"] = "petstore/api/user_api.lua";
 		["petstore.model.api_response"] = "petstore/model/api_response.lua";
 		["petstore.model.category"] = "petstore/model/category.lua";
+		["petstore.model.inline_object"] = "petstore/model/inline_object.lua";
+		["petstore.model.inline_object_1"] = "petstore/model/inline_object_1.lua";
 		["petstore.model.order"] = "petstore/model/order.lua";
 		["petstore.model.pet"] = "petstore/model/pet.lua";
 		["petstore.model.tag"] = "petstore/model/tag.lua";
diff --git a/samples/client/petstore/lua/petstore/api/pet_api.lua b/samples/client/petstore/lua/petstore/api/pet_api.lua
index d9ce3e8df7f..02e0392c3e2 100644
--- a/samples/client/petstore/lua/petstore/api/pet_api.lua
+++ b/samples/client/petstore/lua/petstore/api/pet_api.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
@@ -60,6 +60,10 @@ function pet_api:add_pet(pet)
 	--local var_content_type = { "application/json", "application/xml" }
 	req.headers:upsert("accept", "application/json")
 
+	-- TODO: create a function to select proper content-type
+	--local var_accept = { "application/xml", "application/json" }
+	req.headers:upsert("content-type", "application/xml")
+
 	req:set_body(dkjson.encode(pet))
 
 	-- oAuth
@@ -74,7 +78,18 @@ function pet_api:add_pet(pet)
 	end
 	local http_status = headers:get(":status")
 	if http_status:sub(1,1) == "2" then
-		return nil, headers
+		local body, err, errno2 = stream:get_body_as_string()
+		-- exception when getting the HTTP body
+		if not body then
+			return nil, err, errno2
+		end
+		stream:shutdown()
+		local result, _, err3 = dkjson.decode(body)
+		-- exception when decoding the HTTP body
+		if result == nil then
+			return nil, err3
+		end
+		return petstore_pet.cast(result), headers
 	else
 		local body, err, errno2 = stream:get_body_as_string()
 		if not body then
@@ -295,6 +310,10 @@ function pet_api:update_pet(pet)
 	--local var_content_type = { "application/json", "application/xml" }
 	req.headers:upsert("accept", "application/json")
 
+	-- TODO: create a function to select proper content-type
+	--local var_accept = { "application/xml", "application/json" }
+	req.headers:upsert("content-type", "application/xml")
+
 	req:set_body(dkjson.encode(pet))
 
 	-- oAuth
@@ -309,7 +328,18 @@ function pet_api:update_pet(pet)
 	end
 	local http_status = headers:get(":status")
 	if http_status:sub(1,1) == "2" then
-		return nil, headers
+		local body, err, errno2 = stream:get_body_as_string()
+		-- exception when getting the HTTP body
+		if not body then
+			return nil, err, errno2
+		end
+		stream:shutdown()
+		local result, _, err3 = dkjson.decode(body)
+		-- exception when decoding the HTTP body
+		if result == nil then
+			return nil, err3
+		end
+		return petstore_pet.cast(result), headers
 	else
 		local body, err, errno2 = stream:get_body_as_string()
 		if not body then
diff --git a/samples/client/petstore/lua/petstore/api/store_api.lua b/samples/client/petstore/lua/petstore/api/store_api.lua
index 456a1bb6018..d50456ffffd 100644
--- a/samples/client/petstore/lua/petstore/api/store_api.lua
+++ b/samples/client/petstore/lua/petstore/api/store_api.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
@@ -182,6 +182,10 @@ function store_api:place_order(order)
 
 	-- set HTTP verb
 	req.headers:upsert(":method", "POST")
+	-- TODO: create a function to select proper accept
+	--local var_content_type = { "application/json" }
+	req.headers:upsert("accept", "application/json")
+
 	-- TODO: create a function to select proper content-type
 	--local var_accept = { "application/xml", "application/json" }
 	req.headers:upsert("content-type", "application/xml")
diff --git a/samples/client/petstore/lua/petstore/api/user_api.lua b/samples/client/petstore/lua/petstore/api/user_api.lua
index 6cc3f251976..16a037608ab 100644
--- a/samples/client/petstore/lua/petstore/api/user_api.lua
+++ b/samples/client/petstore/lua/petstore/api/user_api.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
@@ -55,6 +55,10 @@ function user_api:create_user(user)
 
 	-- set HTTP verb
 	req.headers:upsert(":method", "POST")
+	-- TODO: create a function to select proper accept
+	--local var_content_type = { "application/json" }
+	req.headers:upsert("accept", "application/json")
+
 	req:set_body(dkjson.encode(user))
 
 
@@ -88,6 +92,10 @@ function user_api:create_users_with_array_input(user)
 
 	-- set HTTP verb
 	req.headers:upsert(":method", "POST")
+	-- TODO: create a function to select proper accept
+	--local var_content_type = { "application/json" }
+	req.headers:upsert("accept", "application/json")
+
 	req:set_body(dkjson.encode(user))
 
 
@@ -121,6 +129,10 @@ function user_api:create_users_with_list_input(user)
 
 	-- set HTTP verb
 	req.headers:upsert(":method", "POST")
+	-- TODO: create a function to select proper accept
+	--local var_content_type = { "application/json" }
+	req.headers:upsert("accept", "application/json")
+
 	req:set_body(dkjson.encode(user))
 
 
@@ -308,6 +320,10 @@ function user_api:update_user(username, user)
 
 	-- set HTTP verb
 	req.headers:upsert(":method", "PUT")
+	-- TODO: create a function to select proper accept
+	--local var_content_type = { "application/json" }
+	req.headers:upsert("accept", "application/json")
+
 	req:set_body(dkjson.encode(user))
 
 
diff --git a/samples/client/petstore/lua/petstore/model/api_response.lua b/samples/client/petstore/lua/petstore/model/api_response.lua
index e96796dc5d0..9531219b71b 100644
--- a/samples/client/petstore/lua/petstore/model/api_response.lua
+++ b/samples/client/petstore/lua/petstore/model/api_response.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/petstore/model/category.lua b/samples/client/petstore/lua/petstore/model/category.lua
index 711124a4fbe..fd15b89da0e 100644
--- a/samples/client/petstore/lua/petstore/model/category.lua
+++ b/samples/client/petstore/lua/petstore/model/category.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/petstore/model/inline_object.lua b/samples/client/petstore/lua/petstore/model/inline_object.lua
new file mode 100644
index 00000000000..c09af285795
--- /dev/null
+++ b/samples/client/petstore/lua/petstore/model/inline_object.lua
@@ -0,0 +1,32 @@
+--[[
+  OpenAPI Petstore
+ 
+  This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ 
+  The version of the OpenAPI document: 1.0.0
+  
+  Generated by: https://openapi-generator.tech
+]]
+
+-- inline_object class
+local inline_object = {}
+local inline_object_mt = {
+	__name = "inline_object";
+	__index = inline_object;
+}
+
+local function cast_inline_object(t)
+	return setmetatable(t, inline_object_mt)
+end
+
+local function new_inline_object(name, status)
+	return cast_inline_object({
+		["name"] = name;
+		["status"] = status;
+	})
+end
+
+return {
+	cast = cast_inline_object;
+	new = new_inline_object;
+}
diff --git a/samples/client/petstore/lua/petstore/model/inline_object_1.lua b/samples/client/petstore/lua/petstore/model/inline_object_1.lua
new file mode 100644
index 00000000000..a7d19b29997
--- /dev/null
+++ b/samples/client/petstore/lua/petstore/model/inline_object_1.lua
@@ -0,0 +1,32 @@
+--[[
+  OpenAPI Petstore
+ 
+  This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ 
+  The version of the OpenAPI document: 1.0.0
+  
+  Generated by: https://openapi-generator.tech
+]]
+
+-- inline_object_1 class
+local inline_object_1 = {}
+local inline_object_1_mt = {
+	__name = "inline_object_1";
+	__index = inline_object_1;
+}
+
+local function cast_inline_object_1(t)
+	return setmetatable(t, inline_object_1_mt)
+end
+
+local function new_inline_object_1(additional_metadata, file)
+	return cast_inline_object_1({
+		["additionalMetadata"] = additional_metadata;
+		["file"] = file;
+	})
+end
+
+return {
+	cast = cast_inline_object_1;
+	new = new_inline_object_1;
+}
diff --git a/samples/client/petstore/lua/petstore/model/order.lua b/samples/client/petstore/lua/petstore/model/order.lua
index 3b67e997f9e..48a691b72d7 100644
--- a/samples/client/petstore/lua/petstore/model/order.lua
+++ b/samples/client/petstore/lua/petstore/model/order.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/petstore/model/pet.lua b/samples/client/petstore/lua/petstore/model/pet.lua
index 3a750e3a1a3..5f887e32b55 100644
--- a/samples/client/petstore/lua/petstore/model/pet.lua
+++ b/samples/client/petstore/lua/petstore/model/pet.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/petstore/model/tag.lua b/samples/client/petstore/lua/petstore/model/tag.lua
index 7daf7fcc722..872dfab64bc 100644
--- a/samples/client/petstore/lua/petstore/model/tag.lua
+++ b/samples/client/petstore/lua/petstore/model/tag.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/petstore/model/user.lua b/samples/client/petstore/lua/petstore/model/user.lua
index c7cb44013b6..82539d731da 100644
--- a/samples/client/petstore/lua/petstore/model/user.lua
+++ b/samples/client/petstore/lua/petstore/model/user.lua
@@ -3,7 +3,7 @@
  
   This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
  
-  OpenAPI spec version: 1.0.0
+  The version of the OpenAPI document: 1.0.0
   
   Generated by: https://openapi-generator.tech
 ]]
diff --git a/samples/client/petstore/lua/spec/inline_object_1_spec.lua b/samples/client/petstore/lua/spec/inline_object_1_spec.lua
new file mode 100644
index 00000000000..ba0da43dd7a
--- /dev/null
+++ b/samples/client/petstore/lua/spec/inline_object_1_spec.lua
@@ -0,0 +1,33 @@
+--[[
+  OpenAPI Petstore
+ 
+  This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ 
+  The version of the OpenAPI document: 1.0.0
+  
+  Generated by: https://openapi-generator.tech
+]]
+
+--[[
+Unit tests for petstore.model.inline_object_1
+Automatically generated by openapi-generator (https://openapi-generator.tech)
+Please update as you see appropriate
+]]
+describe("inline_object_1", function()
+  local petstore_inline_object_1 = require "petstore.model.inline_object_1"
+
+  -- unit tests for the property 'additional_metadata'
+  describe("property additional_metadata test", function()
+    it("should work", function()
+      -- TODO assertion here: http://olivinelabs.com/busted/#asserts
+    end)
+  end)
+
+  -- unit tests for the property 'file'
+  describe("property file test", function()
+    it("should work", function()
+      -- TODO assertion here: http://olivinelabs.com/busted/#asserts
+    end)
+  end)
+
+end)
diff --git a/samples/client/petstore/lua/spec/inline_object_spec.lua b/samples/client/petstore/lua/spec/inline_object_spec.lua
new file mode 100644
index 00000000000..00d34720f83
--- /dev/null
+++ b/samples/client/petstore/lua/spec/inline_object_spec.lua
@@ -0,0 +1,33 @@
+--[[
+  OpenAPI Petstore
+ 
+  This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ 
+  The version of the OpenAPI document: 1.0.0
+  
+  Generated by: https://openapi-generator.tech
+]]
+
+--[[
+Unit tests for petstore.model.inline_object
+Automatically generated by openapi-generator (https://openapi-generator.tech)
+Please update as you see appropriate
+]]
+describe("inline_object", function()
+  local petstore_inline_object = require "petstore.model.inline_object"
+
+  -- unit tests for the property 'name'
+  describe("property name test", function()
+    it("should work", function()
+      -- TODO assertion here: http://olivinelabs.com/busted/#asserts
+    end)
+  end)
+
+  -- unit tests for the property 'status'
+  describe("property status test", function()
+    it("should work", function()
+      -- TODO assertion here: http://olivinelabs.com/busted/#asserts
+    end)
+  end)
+
+end)