Auto-quote strings

Author: ErikSchierboom

exercises/practice/acronym/.meta/Generator.tpl

@@ -6,7 +6,7 @@ public class AcronymTests
     [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
     public void {{method_name path}}()
     {
-        Assert.Equal("{{expected}}", Acronym.Abbreviate("{{input.phrase}}"));
+        Assert.Equal({{expected}}, Acronym.Abbreviate({{input.phrase}}));
     }
     {{/test_cases}}
 }

exercises/practice/isogram/.meta/Generator.tpl

@@ -6,7 +6,7 @@ public class IsogramTests
     [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
     public void {{method_name path}}()
     {
-        Assert.{{expected}}(Isogram.IsIsogram("{{input.phrase}}"));
+        Assert.{{expected}}(Isogram.IsIsogram({{input.phrase}}));
     }
     {{/test_cases}}
 }

generators.new/TemplateRenderer.cs

@@ -47,14 +47,14 @@ public void Format<T>(T value, in EncodedTextWriter writer)
             if (value is not JsonElement element) 
                 throw new ArgumentException("Invalid type");
 
-            writer.Write(SymbolDisplay.FormatLiteral(element.ToString(), false));
+            writer.WriteSafeString(SymbolDisplay.FormatLiteral(element.ToString(), element.ValueKind == JsonValueKind.String));
         }
 
         public bool TryCreateFormatter(Type type, out IFormatter formatter)
         {
             if (type != typeof(JsonElement))
             {
-                formatter = null;
+                formatter = null!;
                 return false;
             }