[BUG][CLIENT][Java-VertX]

Bug Report Checklist

• What's the version of OpenAPI Generator used?
  Latest master (4.2.0-SNAPSHOT)
• Have you search for related issues/PRs?
• What's the actual output vs expected output?

CircleCi:


[ERROR] COMPILATION ERROR : 
[ERROR] /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/FakeApiTest.java:[316,22] variable context is already defined in method testQueryParameterCollectionFormatTest(io.vertx.ext.unit.TestContext)
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile (default-testCompile) on project petstore-vertx: Compilation failure
[ERROR] /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/FakeApiTest.java:[316,22] variable context is already defined in method testQueryParameterCollectionFormatTest(io.vertx.ext.unit.TestContext)

Description

Vertx was builded against the latest generator but is not overriding files on generation thus the test files are really old. If the java-petstore-vertx directory is deleted before regeneration the generated code will no longer compile resulting in a failed test.

• Reference Build: https://circleci.com/gh/OpenAPITools/openapi-generator/9319?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link
• Pull Request which failed 'cause of this: https://github.com/OpenAPITools/openapi-generator/pull/4030
• Console output snippet on regeneration:

[main] INFO  o.o.codegen.DefaultGenerator - File exists. Skipped overwriting /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/FakeApiTest.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/docs/FakeApi.md
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/FakeClassnameTags123Api.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/FakeClassnameTags123ApiImpl.java
[main] INFO  o.o.codegen.DefaultGenerator - File exists. Skipped overwriting /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/docs/FakeClassnameTags123Api.md
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApi.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApiImpl.java
[main] INFO  o.o.codegen.DefaultGenerator - File exists. Skipped overwriting /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/PetApiTest.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/docs/PetApi.md
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/StoreApi.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/StoreApi.java
[main] INFO  o.o.codegen.AbstractGenerator - writing file /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/StoreApiImpl.java
[main] INFO  o.o.codegen.DefaultGenerator - File exists. Skipped overwriting /home/rtiersch/workspace/cloned/openapi-generator/samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/StoreApiTest.java

Suggest a fix

Fix tests or remove tests / golden files to no longer test this generator in CircleCI

Start with samples/client/petstore/java/vertx/src/test/java/org/openapitools/client/api/FakeApiTest.java, especially testQueryParameterCollectionFormatTest, and review the reported regeneration output showing skipped test files. Reproduce the Java Vert.x sample generation and Maven test compilation; done means regeneration no longer leaves the conflicting test state and the sample compiles successfully.