fix(go-sdk): generated unmarshalJSON in oneOf can not be compiled (#204)

relates to STACKITSDK-269

Author: marceljk

blacklist.txt

@@ -4,5 +4,4 @@ featuretoggle
 workflows
 openstack
 notebooks
-observability
 cost

templates/go/custom/helper/array_json_example_value.mustache

@@ -0,0 +1 @@
+{{#isArray}}[{{#items}}{{#isString}}"example"{{/isString}}{{/items}}]{{/isArray}}

templates/go/custom/helper/container_json_example_value.mustache

@@ -0,0 +1 @@
+{{#isContainer}}{{#isMap}}{"map":{{#items}}{{> custom/helper/array_json_example_value}}{{^isArray}}{{#isString}}"example"{{/isString}}{{/isArray}}{{/items}}}{{/isMap}}{{^isMap}}{{> custom/helper/array_json_example_value}}{{/isMap}}{{/isContainer}}

templates/go/custom/model_oneof_test.mustache

@@ -27,15 +27,23 @@ func Test{{{classname}}}_UnmarshalJSON(t *testing.T) {
             wantErr: false,
         },
     {{/allowableValues.values}}
-    {{^allowableValues.values}}{{^isModel}}
+    {{^allowableValues.values}}{{^isModel}}{{^isContainer}}
         {
-            name: "success - {{dataType}} {{example}}",
+            name: "success - {{dataType}} {{{example}}}",
             args: args{
-                src: []byte(`"{{example}}"`),
+                src: []byte(`"{{{example}}}"`),
             },
             wantErr: false,
         },
-    {{/isModel}}{{/allowableValues.values}}
+        {{/isContainer}}{{#isContainer}}
+        {
+            name: "success - {{dataType}}",
+            args: args{
+                    src: []byte(`{{>custom/helper/container_json_example_value}}`),
+            },
+            wantErr: false,
+        },
+    {{/isContainer}}{{/isModel}}{{/allowableValues.values}}
 {{#-last}}
 	}
 	for _, tt := range tests {

templates/go/model_oneof.mustache

@@ -65,15 +65,15 @@ func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
 	dst{{classname}}{{-index}} := &{{classname}}{}
 	err = json.Unmarshal(data, &dst{{classname}}{{-index}}.{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}})
 	if err == nil {
-		json{{{.}}}, _ := json.Marshal(&dst{{classname}}{{-index}}.{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}})
+		json{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}}, _ := json.Marshal(&dst{{classname}}{{-index}}.{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}})
         {{#pattern}}
         regex := `{{.}}`
         regex = regexp.MustCompile("^\\/|\\/$").ReplaceAllString(regex, "$1") // Remove beginning slash and ending slash
         regex = regexp.MustCompile("\\\\(.)").ReplaceAllString(regex, "$1") // Remove duplicate escaping char for dots
         rawString := regexp.MustCompile(`^"|"$`).ReplaceAllString(*dst{{classname}}{{-index}}.{{#lambda.type-to-name}}{{dataType}}{{/lambda.type-to-name}}, "$1") // Remove quotes
         isMatched, _ := regexp.MatchString(regex, rawString)
         {{/pattern}}
-		if string(json{{{.}}}) != "{}" {{#pattern}}&& isMatched {{/pattern}} { // empty struct
+		if string(json{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}}) != "{}" {{#pattern}}&& isMatched {{/pattern}} { // empty struct
 			dst.{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}} = dst{{classname}}{{-index}}.{{#lambda.type-to-name}}{{{.}}}{{/lambda.type-to-name}}
 			match++
 		}