[java][okhttp] Add CI tests for streaming (#10678)

* add ci tests for streaming

* use spaces instead of tabs

* update samples

bin/configs/java-okhttp-gson-streaming.yaml

@@ -0,0 +1,9 @@
+generatorName: java
+outputDir: samples/client/others/java/okhttp-gson-streaming
+library: okhttp-gson
+inputSpec: modules/openapi-generator/src/test/resources/3_0/streaming.yaml
+templateDir: modules/openapi-generator/src/main/resources/Java
+additionalProperties:
+  artifactId: petstore-okhttp-gson
+  hideGenerationTimestamp: "true"
+  supportStreaming: true

pom.xml

@@ -1270,6 +1270,7 @@
                 <module>samples/client/petstore/java/jersey1</module>
                 <module>samples/client/petstore/java/jersey2-java8</module>
                 <module>samples/openapi3/client/petstore/java/jersey2-java8</module>
+                <module>samples/client/others/java/okhttp-gson-streaming</module>
                 <module>samples/client/petstore/java/okhttp-gson</module>
                 <module>samples/client/petstore/java/retrofit2</module>
                 <module>samples/client/petstore/java/retrofit2rx2</module>

samples/client/others/java/okhttp-gson-streaming/.gitignore

@@ -0,0 +1,21 @@
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# exclude jar for gradle wrapper
+!gradle/wrapper/*.jar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# build files
+**/target
+target
+.gradle
+build

samples/client/others/java/okhttp-gson-streaming/.openapi-generator-ignore

@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/client/others/java/okhttp-gson-streaming/.openapi-generator/FILES

@@ -0,0 +1,36 @@
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+build.gradle
+build.sbt
+docs/PingApi.md
+docs/SomeObj.md
+git_push.sh
+gradle.properties
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+pom.xml
+settings.gradle
+src/main/AndroidManifest.xml
+src/main/java/org/openapitools/client/ApiCallback.java
+src/main/java/org/openapitools/client/ApiClient.java
+src/main/java/org/openapitools/client/ApiException.java
+src/main/java/org/openapitools/client/ApiResponse.java
+src/main/java/org/openapitools/client/Configuration.java
+src/main/java/org/openapitools/client/GzipRequestInterceptor.java
+src/main/java/org/openapitools/client/JSON.java
+src/main/java/org/openapitools/client/Pair.java
+src/main/java/org/openapitools/client/ProgressRequestBody.java
+src/main/java/org/openapitools/client/ProgressResponseBody.java
+src/main/java/org/openapitools/client/ServerConfiguration.java
+src/main/java/org/openapitools/client/ServerVariable.java
+src/main/java/org/openapitools/client/StringUtil.java
+src/main/java/org/openapitools/client/api/PingApi.java
+src/main/java/org/openapitools/client/auth/ApiKeyAuth.java
+src/main/java/org/openapitools/client/auth/Authentication.java
+src/main/java/org/openapitools/client/auth/HttpBasicAuth.java
+src/main/java/org/openapitools/client/auth/HttpBearerAuth.java
+src/main/java/org/openapitools/client/model/SomeObj.java

samples/client/others/java/okhttp-gson-streaming/.openapi-generator/VERSION

@@ -0,0 +1 @@
+5.3.0-SNAPSHOT

samples/client/others/java/okhttp-gson-streaming/.travis.yml

@@ -0,0 +1,22 @@
+#
+# Generated by OpenAPI Generator: https://openapi-generator.tech
+#
+# Ref: https://docs.travis-ci.com/user/languages/java/
+#
+language: java
+jdk:
+  - openjdk12
+  - openjdk11
+  - openjdk10
+  - openjdk9
+  - openjdk8
+before_install:
+  # ensure gradlew has proper permission
+  - chmod a+x ./gradlew
+script:
+  # test using maven
+  #- mvn test
+  # test using gradle
+  - gradle test
+  # test using sbt
+  # - sbt test

samples/client/others/java/okhttp-gson-streaming/README.md

@@ -0,0 +1,129 @@
+# petstore-okhttp-gson
+
+ping some object
+- API version: 1.0
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+
+*Automatically generated by the [OpenAPI Generator](https://openapi-generator.tech)*
+
+
+## Requirements
+
+Building the API client library requires:
+1. Java 1.7+
+2. Maven/Gradle
+
+## Installation
+
+To install the API client library to your local Maven repository, simply execute:
+
+```shell
+mvn clean install
+```
+
+To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:
+
+```shell
+mvn clean deploy
+```
+
+Refer to the [OSSRH Guide](http://central.sonatype.org/pages/ossrh-guide.html) for more information.
+
+### Maven users
+
+Add this dependency to your project's POM:
+
+```xml
+<dependency>
+  <groupId>org.openapitools</groupId>
+  <artifactId>petstore-okhttp-gson</artifactId>
+  <version>1.0</version>
+  <scope>compile</scope>
+</dependency>
+```
+
+### Gradle users
+
+Add this dependency to your project's build file:
+
+```groovy
+compile "org.openapitools:petstore-okhttp-gson:1.0"
+```
+
+### Others
+
+At first generate the JAR by executing:
+
+```shell
+mvn clean package
+```
+
+Then manually install the following JARs:
+
+* `target/petstore-okhttp-gson-1.0.jar`
+* `target/lib/*.jar`
+
+## Getting Started
+
+Please follow the [installation](#installation) instruction and execute the following Java code:
+
+```java
+
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.PingApi;
+
+public class Example {
+  public static void main(String[] args) {
+    ApiClient defaultClient = Configuration.getDefaultApiClient();
+    defaultClient.setBasePath("http://localhost:8082");
+
+    PingApi apiInstance = new PingApi(defaultClient);
+    SomeObj someObj = new SomeObj(); // SomeObj | 
+    try {
+      SomeObj result = apiInstance.postPing(someObj);
+      System.out.println(result);
+    } catch (ApiException e) {
+      System.err.println("Exception when calling PingApi#postPing");
+      System.err.println("Status code: " + e.getCode());
+      System.err.println("Reason: " + e.getResponseBody());
+      System.err.println("Response headers: " + e.getResponseHeaders());
+      e.printStackTrace();
+    }
+  }
+}
+
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost:8082*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*PingApi* | [**postPing**](docs/PingApi.md#postPing) | **POST** /ping | 
+
+
+## Documentation for Models
+
+ - [SomeObj](docs/SomeObj.md)
+
+
+## Documentation for Authorization
+
+All endpoints do not require authorization.
+Authentication schemes defined for the API:
+
+## Recommendation
+
+It's recommended to create an instance of `ApiClient` per thread in a multithreaded environment to avoid any potential issues.
+
+## Author
+
+
+

samples/client/others/java/okhttp-gson-streaming/api/openapi.yaml

@@ -0,0 +1,53 @@
+openapi: 3.0.1
+info:
+  title: ping some object
+  version: "1.0"
+servers:
+- url: http://localhost:8082/
+paths:
+  /ping:
+    post:
+      operationId: postPing
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/SomeObj'
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SomeObj'
+          description: OK
+      tags:
+      - ping
+      x-streaming: true
+      x-contentType: application/json
+      x-accepts: application/json
+components:
+  schemas:
+    SomeObj:
+      example:
+        name: name
+        active: true
+        $_type: SomeObjIdentifier
+        id: 0
+        type: type
+      properties:
+        $_type:
+          default: SomeObjIdentifier
+          enum:
+          - SomeObjIdentifier
+          type: string
+        id:
+          format: int64
+          type: integer
+        name:
+          type: string
+        active:
+          type: boolean
+        type:
+          type: string
+      type: object
+