Add unit cases for issue 4062

Author: lemoinem

bin/kotlin-uppercase-enum.sh

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+#!/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 -B 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/kotlin-client -i modules/openapi-generator/src/test/resources/3_0/issue-4062.yaml -g kotlin --artifact-id kotlin-uppercase-enum --additional-properties enumPropertyNaming=UPPERCASE -o samples/client/petstore/kotlin-uppercase-enum $@"
+
+java ${JAVA_OPTS} -jar ${executable} ${ags}
+
+cp CI/samples.ci/client/petstore/kotlin-uppercase-enum/pom.xml samples/client/petstore/kotlin-uppercase-enum/pom.xml

modules/openapi-generator/src/test/resources/3_0/issue-4062.yaml

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+servers:
+  - url: 'http://petstore.swagger.io/v2'
+info:
+  description: Test for issue 4062
+  version: 1.0.0
+  title: OpenAPI Petstore
+  license:
+    name: Apache-2.0
+    url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
+paths:
+  /enum:
+    get:
+      tags:
+        - enum
+      summary: Get enums
+      description: ''
+      operationId: getEnum
+      responses:
+        '200':
+          description: success
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PetEnum'
+components:
+  schemas:
+    PetEnum:
+        type: string
+        description: An enum with complex-ish naming
+        enum:
+        - myFirstValue
+        - MY_SECOND_VALUE

samples/client/petstore/kotlin-uppercase-enum/.openapi-generator-ignore

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+# 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/petstore/kotlin-uppercase-enum/.openapi-generator/VERSION

@@ -0,0 +1 @@
+4.2.0-SNAPSHOT

samples/client/petstore/kotlin-uppercase-enum/README.md

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+# org.openapitools.client - Kotlin client library for OpenAPI Petstore
+
+## Requires
+
+* Kotlin 1.3.41
+* Gradle 4.9
+
+## Build
+
+First, create the gradle wrapper script:
+
+```
+gradle wrapper
+```
+
+Then, run:
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+* Implementation of ApiClient is intended to reduce method counts, specifically to benefit Android targets.
+
+<a name="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*EnumApi* | [**getEnum**](docs/EnumApi.md#getenum) | **GET** /enum | Get enums
+
+
+<a name="documentation-for-models"></a>
+## Documentation for Models
+
+ - [org.openapitools.client.models.PetEnum](docs/PetEnum.md)
+
+
+<a name="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+All endpoints do not require authorization.

samples/client/petstore/kotlin-uppercase-enum/build.gradle

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+group 'org.openapitools'
+version '1.0.0'
+
+wrapper {
+    gradleVersion = '4.9'
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = '1.3.41'
+
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+    mavenCentral()
+}
+
+test {
+    useJUnitPlatform()
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
+    compile "com.squareup.moshi:moshi-kotlin:1.8.0"
+    compile "com.squareup.moshi:moshi-adapters:1.8.0"
+    compile "com.squareup.okhttp3:okhttp:4.0.1"
+    testImplementation "io.kotlintest:kotlintest-runner-junit5:3.1.0"
+}

samples/client/petstore/kotlin-uppercase-enum/docs/EnumApi.md

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+# EnumApi
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**getEnum**](EnumApi.md#getEnum) | **GET** /enum | Get enums
+
+
+<a name="getEnum"></a>
+# **getEnum**
+> PetEnum getEnum()
+
+Get enums
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = EnumApi()
+try {
+    val result : PetEnum = apiInstance.getEnum()
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling EnumApi#getEnum")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling EnumApi#getEnum")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+[**PetEnum**](PetEnum.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+

samples/client/petstore/kotlin-uppercase-enum/docs/PetEnum.md

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+
+# PetEnum
+
+## Enum
+
+
+    * `MY_FIRST_VALUE` (value: `"myFirstValue"`)
+
+    * `MY_SECOND_VALUE` (value: `"MY_SECOND_VALUE"`)
+
+
+

samples/client/petstore/kotlin-uppercase-enum/settings.gradle

@@ -0,0 +1,2 @@
+
+rootProject.name = 'kotlin-uppercase-enum'

samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/apis/EnumApi.kt

@@ -0,0 +1,60 @@
+/**
+* OpenAPI Petstore
+* Test for issue 4062
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.apis
+
+import org.openapitools.client.models.PetEnum
+
+import org.openapitools.client.infrastructure.ApiClient
+import org.openapitools.client.infrastructure.ClientException
+import org.openapitools.client.infrastructure.ClientError
+import org.openapitools.client.infrastructure.ServerException
+import org.openapitools.client.infrastructure.ServerError
+import org.openapitools.client.infrastructure.MultiValueMap
+import org.openapitools.client.infrastructure.RequestConfig
+import org.openapitools.client.infrastructure.RequestMethod
+import org.openapitools.client.infrastructure.ResponseType
+import org.openapitools.client.infrastructure.Success
+import org.openapitools.client.infrastructure.toMultiValue
+
+class EnumApi(basePath: kotlin.String = "http://petstore.swagger.io/v2") : ApiClient(basePath) {
+
+    /**
+    * Get enums
+    * 
+    * @return PetEnum
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun getEnum() : PetEnum {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/enum",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<PetEnum>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as PetEnum
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+}

samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt

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+package org.openapitools.client.infrastructure
+
+typealias MultiValueMap = Map<String,List<String>>
+
+fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
+    "csv" -> ","
+    "tsv" -> "\t"
+    "pipes" -> "|"
+    "ssv" -> " "
+    else -> ""
+}
+
+val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+
+fun <T : Any?> toMultiValue(items: Array<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter)
+        = toMultiValue(items.asIterable(), collectionFormat, map)
+
+fun <T : Any?> toMultiValue(items: Iterable<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter): List<String> {
+    return when(collectionFormat) {
+        "multi" -> items.map(map)
+        else -> listOf(items.joinToString(separator = collectionDelimiter(collectionFormat), transform = map))
+    }
+}