fix indention in tostring and constructor, add existing test cases to

auto-generated test files

modules/swagger-codegen/src/main/resources/csharp/api_test.mustache

@@ -32,7 +32,7 @@ namespace {{packageName}}.Test
         [SetUp]
         public void Init()
         {
-           instance = new {{classname}}();
+            instance = new {{classname}}();
         }
 
         /// <summary>

modules/swagger-codegen/src/main/resources/csharp/modelGeneric.mustache

@@ -41,7 +41,10 @@
         {{/vars}}
         public {{classname}}({{#vars}}{{^isReadOnly}}{{{datatypeWithEnum}}}{{#isEnum}}?{{/isEnum}} {{name}} = null{{/isReadOnly}}{{#hasMoreNonReadOnly}}, {{/hasMoreNonReadOnly}}{{/vars}})
         {
-            {{#vars}}{{^isReadOnly}}{{#required}}// to ensure "{{name}}" is required (not null)
+            {{#vars}}
+            {{^isReadOnly}}
+            {{#required}}
+            // to ensure "{{name}}" is required (not null)
             if ({{name}} == null)
             {
                 throw new InvalidDataException("{{name}} is a required property for {{classname}} and cannot be null");
@@ -50,8 +53,12 @@
             {
                 this.{{name}} = {{name}};
             }
-            {{/required}}{{/isReadOnly}}{{/vars}}
-            {{#vars}}{{^isReadOnly}}{{^required}}
+            {{/required}}
+            {{/isReadOnly}}
+            {{/vars}}
+            {{#vars}}
+            {{^isReadOnly}}
+            {{^required}}
             {{#defaultValue}}// use default value if no "{{name}}" provided
             if ({{name}} == null)
             {
@@ -63,9 +70,11 @@
             }
             {{/defaultValue}}
             {{^defaultValue}}
-            this.{{name}} = {{name}};
+this.{{name}} = {{name}};
             {{/defaultValue}}
-            {{/required}}{{/isReadOnly}}{{/vars}}
+            {{/required}}
+            {{/isReadOnly}}
+            {{/vars}}
         }
         
         {{#vars}}
@@ -86,7 +95,8 @@
         {
             var sb = new StringBuilder();
             sb.Append("class {{classname}} {\n");
-            {{#vars}}sb.Append("  {{name}}: ").Append({{name}}).Append("\n");
+            {{#vars}}
+            sb.Append("  {{name}}: ").Append({{name}}).Append("\n");
             {{/vars}}
             sb.Append("}\n");
             return sb.ToString();