Added support for decimal and bigint format schema rendering

Want big numbers? you got it. https://github.com/pb33f/wiretap/issues/93

renderer/schema_renderer.go

@@ -24,6 +24,8 @@ const (
 	stringType       = "string"
 	numberType       = "number"
 	integerType      = "integer"
+	bigIntType       = "bigint"
+	decimalType      = "decimal"
 	booleanType      = "boolean"
 	objectType       = "object"
 	arrayType        = "array"
@@ -217,7 +219,10 @@ func (wr *SchemaRenderer) DiveIntoSchema(schema *base.Schema, key string, struct
 	}
 
 	// handle numbers
-	if slices.Contains(schema.Type, numberType) || slices.Contains(schema.Type, integerType) {
+	if slices.Contains(schema.Type, numberType) ||
+		slices.Contains(schema.Type, integerType) ||
+		slices.Contains(schema.Type, bigIntType) ||
+		slices.Contains(schema.Type, decimalType) {
 
 		if schema.Enum != nil && len(schema.Enum) > 0 {
 			enum := schema.Enum[rand.Int()%len(schema.Enum)]
@@ -238,6 +243,27 @@ func (wr *SchemaRenderer) DiveIntoSchema(schema *base.Schema, key string, struct
 				maximum = int64(*schema.Maximum)
 			}
 
+			if schema.Example != nil {
+				var example any
+				_ = schema.Example.Decode(&example)
+				structure[key] = example
+				return
+			}
+			if schema.Examples != nil {
+				if len(schema.Examples) > 0 {
+					renderedExamples := make([]any, len(schema.Examples))
+					for i, exmp := range schema.Examples {
+						if exmp != nil {
+							var ex any
+							_ = exmp.Decode(&ex)
+							renderedExamples[i] = fmt.Sprint(ex)
+						}
+					}
+					structure[key] = renderedExamples
+					return
+				}
+			}
+
 			switch schema.Format {
 			case floatType:
 				structure[key] = rand.Float32()
@@ -245,6 +271,10 @@ func (wr *SchemaRenderer) DiveIntoSchema(schema *base.Schema, key string, struct
 				structure[key] = rand.Float64()
 			case int32Type:
 				structure[key] = int(wr.RandomInt(minimum, maximum))
+			case bigIntType:
+				structure[key] = wr.RandomInt(minimum, maximum)
+			case decimalType:
+				structure[key] = wr.RandomFloat64()
 			default:
 				structure[key] = wr.RandomInt(minimum, maximum)
 			}

renderer/schema_renderer_test.go

@@ -1082,6 +1082,35 @@ properties:
 	assert.Equal(t, `{"args":{"arrParam":"test,test2","arrParamExploded":["1","2"]}}`, string(rendered))
 }
 
+// https://github.com/pb33f/wiretap/issues/93
+func TestRenderSchema_NonStandard_Format(t *testing.T) {
+	testObject := `type: object
+properties:
+  bigint:
+    type: integer
+    format: bigint
+    example: 8821239038968084
+  bigintStr:
+    type: string
+    format: bigint
+    example: "9223372036854775808"
+  decimal:
+    type: number
+    format: decimal
+    example: 3.141592653589793
+  decimalStr:
+    type: string
+    format: decimal
+    example: "3.14159265358979344719667586"`
+
+	compiled := getSchema([]byte(testObject))
+	schema := make(map[string]any)
+	wr := createSchemaRenderer()
+	wr.DiveIntoSchema(compiled, "pb33f", schema, 0)
+	rendered, _ := json.Marshal(schema["pb33f"])
+	assert.Equal(t, `{"bigint":8821239038968084,"bigintStr":"9223372036854775808","decimal":3.141592653589793,"decimalStr":"3.14159265358979344719667586"}`, string(rendered))
+}
+
 func TestCreateRendererUsingDefaultDictionary(t *testing.T) {
 	assert.NotNil(t, CreateRendererUsingDefaultDictionary())
 }