Add ‘disable required check’ switch on renderer #200

Signed-off-by: quobix <dave@quobix.com>

renderer/schema_renderer.go

@@ -58,6 +58,7 @@ func init() {
 // The dictionary is just a slice of strings that is used to generate random words.
 type SchemaRenderer struct {
 	words           []string
+	disableRequired bool
 }
 
 // CreateRendererUsingDictionary will create a new SchemaRenderer using a custom dictionary file.
@@ -85,6 +86,13 @@ func (wr *SchemaRenderer) RenderSchema(schema *base.Schema) any {
 	return structure[rootType].(any)
 }
 
+// DisableRequiredCheck will disable the required check when rendering a schema. This means that all properties
+// will be rendered, not just the required ones.
+// https://github.com/pb33f/libopenapi/issues/200
+func (wr *SchemaRenderer) DisableRequiredCheck() {
+	wr.disableRequired = true
+}
+
 // DiveIntoSchema will dive into a schema and inject values from examples into a map. If there are no examples in
 // the schema, then the renderer will attempt to generate a value based on the schema type, format and pattern.
 func (wr *SchemaRenderer) DiveIntoSchema(schema *base.Schema, key string, structure map[string]any, depth int) {
@@ -219,7 +227,7 @@ func (wr *SchemaRenderer) DiveIntoSchema(schema *base.Schema, key string, struct
 			// check if this schema has required properties, if so, then only render required props, if not
 			// render everything in the schema.
 			checkProps := make(map[string]*base.SchemaProxy)
-			if len(schema.Required) > 0 {
+			if !wr.disableRequired && len(schema.Required) > 0 {
 				for _, requiredProp := range schema.Required {
 					checkProps[requiredProp] = properties[requiredProp]
 				}

renderer/schema_renderer_test.go

@@ -960,6 +960,32 @@ properties:
 	assert.Nil(t, journeyMap["pb33f"].(map[string]interface{})["fries"])
 }
 
+func TestRenderExample_Test_RequiredCheckDisabled(t *testing.T) {
+	testObject := `type: [object]
+required:
+  - drink
+properties:
+  burger:
+    type: string
+  fries:
+    type: string
+  drink:
+    type: string`
+
+	compiled := getSchema([]byte(testObject))
+
+	journeyMap := make(map[string]any)
+	wr := createSchemaRenderer()
+	wr.DisableRequiredCheck()
+	wr.DiveIntoSchema(compiled, "pb33f", journeyMap, 0)
+
+	assert.NotNil(t, journeyMap["pb33f"])
+	drink := journeyMap["pb33f"].(map[string]interface{})["drink"].(string)
+	assert.NotNil(t, drink)
+	assert.NotNil(t, journeyMap["pb33f"].(map[string]interface{})["burger"])
+	assert.NotNil(t, journeyMap["pb33f"].(map[string]interface{})["fries"])
+}
+
 func TestRenderSchema_WithExample(t *testing.T) {
 	testObject := `type: [object]
 properties: