build failure: Failure In Test suite

Description

I want to build swagger-codegen to get swagger-codegen.jar. I have set JAVA_HOME and maven paths.

mvn -version
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: D:\apache-maven-3.6.3\bin..
Java version: 1.8.0_202, vendor: Eclipse OpenJ9, runtime: C:\Program Files\AdoptOpenJDK\jdk-8.0.202.08\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

java -version
openjdk version "1.8.0_202"
OpenJDK Runtime Environment (build 1.8.0_202-b08)
Eclipse OpenJ9 VM (build openj9-0.12.1, JRE 1.8.0 Windows 10 amd64-64-Bit Compressed References 20190205_265 (JIT enabled, AOT enabled)
OpenJ9 - 90dd8cb40
OMR - d2f4534b
JCL - d002501a90 based on jdk8u202-b08)

When I attempt to compile the source using

mvn -e clean package

It ends with error in test suite. I have tried using latest as well as 2.4.12 version but getting similar error.

Swagger-codegen version

2.4.12
Latest

Swagger declaration file content or url

Command line used for generation

TestSuite.txt

Steps to reproduce

mvn -e clean package

Related issues/PRs

Suggest a fix/enhancement

Start with the attached TestSuite.txt and reproduce the reported failure using mvn -e clean package on the stated Windows 10 and Java 8 environment. Compare the test-suite error with the provided Java and Maven versions; the issue is done when the cause is identified and a reproducible fix or diagnosis is documented.