[jaxrs-resteasy] multiple values for @Produces annotation are separated by a comma (#445)

* fix: The values for @Produces annotation were not separated by a comma.
* Add test case for #443

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -4033,6 +4033,11 @@ public class DefaultCodegen implements CodegenConfig {
                     mediaType.put("hasMore", null);
                 }
 
+                if (!codegenOperation.produces.isEmpty()) {
+                    final Map<String, String> lastMediaType = codegenOperation.produces.get(codegenOperation.produces.size() - 1);
+                    lastMediaType.put("hasMore", "true");
+                }
+
                 codegenOperation.produces.add(mediaType);
                 codegenOperation.hasProduces = Boolean.TRUE;
             }

modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java

@@ -21,11 +21,14 @@ import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
-import io.swagger.v3.oas.models.media.*;
+import io.swagger.v3.oas.models.media.ArraySchema;
+import io.swagger.v3.oas.models.media.Content;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.media.ObjectSchema;
+import io.swagger.v3.oas.models.media.Schema;
 import io.swagger.v3.oas.models.parameters.RequestBody;
 import io.swagger.v3.oas.models.responses.ApiResponse;
 import io.swagger.v3.oas.models.responses.ApiResponses;
-
 import io.swagger.v3.parser.core.models.ParseOptions;
 
 import org.openapitools.codegen.utils.ModelUtils;
@@ -153,6 +156,15 @@ public class DefaultCodegenTest {
         Assert.assertTrue(coJson.hasProduces);
         Assert.assertEquals(coJson.produces.size(), 1);
         Assert.assertEquals(coJson.produces.get(0).get("mediaType"), "application/json");
+
+        Operation issue443Operation = openAPI.getPaths().get("/other/issue443").getGet();
+        CodegenOperation coIssue443 = codegen.fromOperation("/other/issue443", "get", issue443Operation, ModelUtils.getSchemas(openAPI), openAPI);
+        Assert.assertTrue(coIssue443.hasProduces);
+        Assert.assertEquals(coIssue443.produces.size(), 2);
+        Assert.assertEquals(coIssue443.produces.get(0).get("mediaType"), "application/json");
+        Assert.assertEquals(coIssue443.produces.get(0).get("hasMore"), "true");
+        Assert.assertEquals(coIssue443.produces.get(1).get("mediaType"), "application/text");
+        Assert.assertEquals(coIssue443.produces.get(1).get("hasMore"), null);
     }
 
     @Test

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

@@ -32,4 +32,31 @@ paths:
                     type: string
                   timestamp:
                     type: string
-              example: '{ "message": "Hello world", "timestamp": "2018-06-29T07:32:23Z"}'
+              example: '{ "message": "Hello world", "timestamp": "2018-06-29T07:32:23Z"}'
+  /other/issue443:
+    get:
+      operationId: issue443
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/LocationData'
+        default:
+          description: Unexpected error
+          content:
+            application/text:
+              schema:
+                type: string
+components:
+  schemas:
+    LocationData:
+      type: object
+      properties:
+        xPos:
+          type: integer
+          format: int32
+        yPos:
+          type: integer
+          format: int32