Kotlin: Fix ParameterizedInput and toString() issue (#573)

* fxi ParameterizedInput bug

* fix tostring

src/main/resources/templates/kotlin-lang/kotlinClassGraphqlParametrizedInput.ftl

@@ -3,6 +3,7 @@ package ${package}
 
 </#if>
 import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLParametrizedInput
+import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLRequestSerializer
 import java.util.StringJoiner
 <#if javaDoc?has_content>
 /**

src/main/resources/templates/kotlin-lang/kotlinClassGraphqlType.ftl

@@ -130,7 +130,7 @@ open class ${className}()<#if implements?has_content> : <#list implements as int
         return true</#if>
     }
 
-    override fun hashCode(): Int = {
+    override fun hashCode(): Int {
     <#if fields?has_content>
         return Objects.hash(<#list fields as field>${field.name}<#if field_has_next>, </#if></#list>)
     <#else>

src/main/resources/templates/scala-lang/scalaClassGraphqlParametrizedInput.ftl

@@ -4,6 +4,7 @@ package ${package}
 
 </#if>
 import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLParametrizedInput
+import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLRequestSerializer
 import scala.collection.JavaConverters._
 <#if fields?has_content>
     <#if enumImportItSelfInScala?has_content>

src/test/java/com/kobylynskyi/graphql/codegen/scala/GraphQLCodegenReactorToStringTest.java

@@ -103,13 +103,15 @@ class GraphQLCodegenReactorToStringTest {
                 outputBuildDir, mappingConfig, TestUtils.getStaticGeneratedInfo()).generate();
 
         File[] files = Objects.requireNonNull(outputJavaClassesDir.listFiles());
-        List<String> generatedFileNames = Arrays.stream(files).map(File::getName).filter(f -> Objects.equals("Synchronized.scala", f)).sorted().collect(toList());
+        List<String> generatedFileNames = Arrays.stream(files).map(File::getName).filter(f -> Objects.equals("Synchronized.scala", f)
+                || Objects.equals("QueryCaseParametrizedInput.scala", f)).sorted().collect(toList());
         assertEquals(singletonList("Synchronized.scala"), generatedFileNames);
 
         for (File file : files) {
-            if (Objects.equals("Synchronized.scala", file.getName())) {
+            if (Arrays.asList("QueryCaseParametrizedInput.scala", "Synchronized.scala").contains(file.getName())) {
                 assertSameTrimmedContent(
-                        new File(String.format("src/test/resources/expected-classes/scala/tostring/%s.txt", "TOSTRING_Synchronized.scala")),
+                        new File(String.format("src/test/resources/expected-classes/scala/tostring/%s.txt", "TOSTRING_Synchronized.scala",
+                                "QueryCaseParametrizedInput")),
                         file);
             }
         }

src/test/resources/expected-classes/kt/Commit_no_final_class.kt.txt

@@ -172,7 +172,7 @@ open class Commit(
 
     }
 
-    override fun hashCode(): Int = {
+    override fun hashCode(): Int {
         return Objects.hash(abbreviatedOid, additions, associatedPullRequests, author, authoredByCommitter, authoredDate, blame, changedFiles, comments, commitResourcePath, commitUrl, committedDate, committedViaWeb, committer, deletions, deployments, history, id, message, messageBody, messageBodyHTML, messageHeadline, messageHeadlineHTML, oid, parents, pushedDate, repository, resourcePath, signature, status, tarballUrl, tree, treeResourcePath, treeUrl, url, viewerCanSubscribe, viewerSubscription, zipballUrl)
     }
 

src/test/resources/expected-classes/kt/restricted-words/QueryFunParametrizedInput.kt.txt

 package com.kobylynskyi.graphql.codegen.prot
 
 import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLParametrizedInput
+import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLRequestSerializer
 import java.util.StringJoiner
 /**
  * Parametrized input for field fun in type Query

src/test/resources/expected-classes/scala/tostring/QueryPrivateParametrizedInput.scala.txt

 package com.kobylynskyi.graphql.codegen.prot
 
 import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLParametrizedInput
+import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLRequestSerializer
 import scala.collection.JavaConverters._
 import TestEnum._