add reveal solution option

Author: gregsdennis

LearnJsonEverything/Services/LessonData.cs

@@ -19,4 +19,5 @@ public class LessonData
 	public JsonArray Tests { get; set; }
 	public bool Achieved { get; set; }
 	public string? UserCode { get; set; }
+	public string Solution { get; set; }
 }

LearnJsonEverything/Shared/Teacher.razor

@@ -46,6 +46,7 @@
 				<div class="d-flex">
 					<button class="btn btn-primary m-1" disabled="@_previousButtonDisabled" @onclick="PreviousLesson">&lt; Previous</button>
 					<button class="btn btn-primary m-1" @onclick="Run">Run</button>
+					<button class="btn btn-primary m-1" @onclick="RevealSolution">Reveal Solution</button>
 					<button class="btn btn-primary m-1" disabled="@_nextButtonDisabled" @onclick="NextLesson">Next &gt;</button>
 				</div>
 			</div>
@@ -100,6 +101,11 @@
 		}
 	}
 
+	private Task RevealSolution()
+	{
+		return _codeEditor.SetValue(_currentLesson?.Solution ?? string.Empty);
+	}
+
 	private Task PreviousLesson()
 	{
 		_currentLesson = _lessons.GetPrevious(_currentLesson?.Id);

LearnJsonEverything/wwwroot/data/lessons/schema.yaml

@@ -40,6 +40,8 @@
             return schema.Evaluate(instance);
         }
     }
+  solution: |-
+    var schema = JsonSerializer.Deserialize<JsonSchema>(schemaText);
   tests:
   - instance: { "foo": 13, "bar": "a string" }
     isValid: true
@@ -54,7 +56,7 @@
   - instance: 6.8
     isValid: false
 - id: 26b6ebca-58e6-4824-86ea-4946d844c9a8
-  skip: true
+  skip: true  # source gen is not available in dynamic compilation
   background: |
     JSON Schema is typically itself represented in JSON.  To support this, the `JsonSchema`
     type is completely compatible with the _System.Text.Json_ serializer.
@@ -102,6 +104,10 @@
     }
 
     /* USER CODE */
+  solution: |-
+    [JsonSerializable(typeof(JsonSchema))]
+    [JsonSerializable(typeof(EvaluationResults))]
+    internal partial class MySerializerContext : JsonSerializerContext;
   tests:
   - instance: { "foo": 13, "bar": "a string" }
     isValid: true
@@ -148,6 +154,8 @@
             return schema.Evaluate(instance);
         }
     }
+  solution: |-
+    builder.Type(SchemaValueType.String);
   tests:
   - instance: a string value
     isValid: true
@@ -191,6 +199,10 @@
             return schema.Evaluate(instance);
         }
     }
+  solution: |-
+    builder.Type(SchemaValueType.String)
+        .ExclusiveMinimum(0)
+        .Maximum(10);
   tests:
   - instance: 6.8
     isValid: true
@@ -250,6 +262,10 @@
             return schema.Evaluate(instance);
         }
     }
+  solution: |-
+    builder.Type(SchemaValueType.Array)
+        .Items(new JsonSchemaBuilder().Type(SchemaValueType.Integer))
+        .MaxItems(5);
   tests:
   - instance: 6.8
     isValid: false
@@ -305,6 +321,8 @@
             return schema.Evaluate(instance, options);
         }
     }
+  solution: |-
+    options.RequireFormatValidation = true;
   tests:
   - instance: 2015-06-13T10:31:16+04:00
     format: date-time
@@ -409,6 +427,8 @@
             return schema.Evaluate(instance, options);
         }
     }
+  solution: |-
+    var options = new EvaluationOptions { EvaluateAs = specVersion };
   tests:
   - instance: [{},4]
     version: Draft6