[Java][okhttp-gson] add echo client test (#14442)

* add echo api tests for java okhttp client

* test okhttp gson echo client in jdk8 workflow

* update samples

.github/workflows/samples-java-client-echo-api-jdk8.yaml

@@ -5,10 +5,12 @@ on:
     paths:
       - samples/client/echo_api/java/apache-httpclient/**
       - samples/client/echo_api/java/feign-gson/**
+      - samples/client/echo_api/java/okhttp-gson/**
   pull_request:
     paths:
       - samples/client/echo_api/java/apache-httpclient/**
       - samples/client/echo_api/java/feign-gson/**
+      - samples/client/echo_api/java/okhttp-gson/**
 jobs:
   build:
     name: Build Java Client JDK8
@@ -20,6 +22,7 @@ jobs:
           # clients
           - samples/client/echo_api/java/apache-httpclient
           - samples/client/echo_api/java/feign-gson
+          - samples/client/echo_api/java/okhttp-gson
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3

bin/configs/java-okhttp-gson-echo-api.yaml

@@ -0,0 +1,8 @@
+generatorName: java
+outputDir: samples/client/echo_api/java/okhttp-gson
+#library: okhttp-gson
+inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
+templateDir: modules/openapi-generator/src/main/resources/Java
+additionalProperties:
+  artifactId: echo-api-okhttp-gson
+  hideGenerationTimestamp: "true"

samples/client/echo_api/java/okhttp-gson/.github/workflows/maven.yml

@@ -0,0 +1,30 @@
+# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+#
+# This file is auto-generated by OpenAPI Generator (https://openapi-generator.tech)
+
+name: Java CI with Maven
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  build:
+    name: Build Echo Server API
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ '8' ]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK
+      uses: actions/setup-java@v2
+      with:
+        java-version: ${{ matrix.java }}
+        distribution: 'temurin'
+        cache: maven
+    - name: Build with Maven
+      run: mvn -B package --no-transfer-progress --file pom.xml

samples/client/echo_api/java/okhttp-gson/.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/echo_api/java/okhttp-gson/.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/echo_api/java/okhttp-gson/.openapi-generator/FILES

@@ -0,0 +1,52 @@
+.github/workflows/maven.yml
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+build.gradle
+build.sbt
+docs/Bird.md
+docs/BirdAndCategory.md
+docs/BodyApi.md
+docs/Category.md
+docs/PathApi.md
+docs/Pet.md
+docs/QueryApi.md
+docs/Tag.md
+docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.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/BodyApi.java
+src/main/java/org/openapitools/client/api/PathApi.java
+src/main/java/org/openapitools/client/api/QueryApi.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/AbstractOpenApiSchema.java
+src/main/java/org/openapitools/client/model/Bird.java
+src/main/java/org/openapitools/client/model/BirdAndCategory.java
+src/main/java/org/openapitools/client/model/Category.java
+src/main/java/org/openapitools/client/model/Pet.java
+src/main/java/org/openapitools/client/model/Tag.java
+src/main/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.java

samples/client/echo_api/java/okhttp-gson/.openapi-generator/VERSION

@@ -0,0 +1 @@
+6.3.0-SNAPSHOT

samples/client/echo_api/java/okhttp-gson/.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/echo_api/java/okhttp-gson/README.md

@@ -0,0 +1,147 @@
+# echo-api-okhttp-gson
+
+Echo Server API
+- API version: 0.1.0
+
+Echo Server API
+
+
+*Automatically generated by the [OpenAPI Generator](https://openapi-generator.tech)*
+
+
+## Requirements
+
+Building the API client library requires:
+1. Java 1.8+
+2. Maven (3.8.3+)/Gradle (7.2+)
+
+## 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>echo-api-okhttp-gson</artifactId>
+  <version>0.1.0</version>
+  <scope>compile</scope>
+</dependency>
+```
+
+### Gradle users
+
+Add this dependency to your project's build file:
+
+```groovy
+  repositories {
+    mavenCentral()     // Needed if the 'echo-api-okhttp-gson' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'echo-api-okhttp-gson' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:echo-api-okhttp-gson:0.1.0"
+  }
+```
+
+### Others
+
+At first generate the JAR by executing:
+
+```shell
+mvn clean package
+```
+
+Then manually install the following JARs:
+
+* `target/echo-api-okhttp-gson-0.1.0.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.BodyApi;
+
+public class Example {
+  public static void main(String[] args) {
+    ApiClient defaultClient = Configuration.getDefaultApiClient();
+    defaultClient.setBasePath("http://localhost:3000");
+
+    BodyApi apiInstance = new BodyApi(defaultClient);
+    Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+    try {
+      Pet result = apiInstance.testEchoBodyPet(pet);
+      System.out.println(result);
+    } catch (ApiException e) {
+      System.err.println("Exception when calling BodyApi#testEchoBodyPet");
+      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:3000*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*BodyApi* | [**testEchoBodyPet**](docs/BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s)
+*PathApi* | [**testsPathStringPathStringIntegerPathInteger**](docs/PathApi.md#testsPathStringPathStringIntegerPathInteger) | **GET** /path/string/{path_string}/integer/{path_integer} | Test path parameter(s)
+*QueryApi* | [**testQueryIntegerBooleanString**](docs/QueryApi.md#testQueryIntegerBooleanString) | **GET** /query/integer/boolean/string | Test query parameter(s)
+*QueryApi* | [**testQueryStyleDeepObjectExplodeTrueObject**](docs/QueryApi.md#testQueryStyleDeepObjectExplodeTrueObject) | **GET** /query/style_deepObject/explode_true/object | Test query parameter(s)
+*QueryApi* | [**testQueryStyleDeepObjectExplodeTrueObjectAllOf**](docs/QueryApi.md#testQueryStyleDeepObjectExplodeTrueObjectAllOf) | **GET** /query/style_deepObject/explode_true/object/allOf | Test query parameter(s)
+*QueryApi* | [**testQueryStyleFormExplodeTrueArrayString**](docs/QueryApi.md#testQueryStyleFormExplodeTrueArrayString) | **GET** /query/style_form/explode_true/array_string | Test query parameter(s)
+*QueryApi* | [**testQueryStyleFormExplodeTrueObject**](docs/QueryApi.md#testQueryStyleFormExplodeTrueObject) | **GET** /query/style_form/explode_true/object | Test query parameter(s)
+
+
+## Documentation for Models
+
+ - [Bird](docs/Bird.md)
+ - [BirdAndCategory](docs/BirdAndCategory.md)
+ - [Category](docs/Category.md)
+ - [Pet](docs/Pet.md)
+ - [Tag](docs/Tag.md)
+ - [TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter](docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.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
+
+[email protected]
+