fix: setting defaults for oneOf and anyOf (#690)

Author: tomato0111

openapi3/schema.go

@@ -934,10 +934,6 @@ func (schema *Schema) visitSetOperations(settings *schemaValidationSettings, val
 			matchedOneOfIdx  = 0
 			tempValue        = value
 		)
-		// make a deep copy to protect origin value from being injected default value that defined in mismatched oneOf schema
-		if settings.asreq || settings.asrep {
-			tempValue = deepcopy.Copy(value)
-		}
 		for idx, item := range v {
 			v := item.Value
 			if v == nil {
@@ -948,6 +944,11 @@ func (schema *Schema) visitSetOperations(settings *schemaValidationSettings, val
 				continue
 			}
 
+			// make a deep copy to protect origin value from being injected default value that defined in mismatched oneOf schema
+			if settings.asreq || settings.asrep {
+				tempValue = deepcopy.Copy(value)
+			}
+
 			if err := v.visitJSON(settings, tempValue); err != nil {
 				validationErrors = append(validationErrors, err)
 				continue
@@ -990,15 +991,15 @@ func (schema *Schema) visitSetOperations(settings *schemaValidationSettings, val
 			matchedAnyOfIdx = 0
 			tempValue       = value
 		)
-		// make a deep copy to protect origin value from being injected default value that defined in mismatched anyOf schema
-		if settings.asreq || settings.asrep {
-			tempValue = deepcopy.Copy(value)
-		}
 		for idx, item := range v {
 			v := item.Value
 			if v == nil {
 				return foundUnresolvedRef(item.Ref)
 			}
+			// make a deep copy to protect origin value from being injected default value that defined in mismatched anyOf schema
+			if settings.asreq || settings.asrep {
+				tempValue = deepcopy.Copy(value)
+			}
 			if err := v.visitJSON(settings, tempValue); err == nil {
 				ok = true
 				matchedAnyOfIdx = idx

openapi3filter/validate_set_default_test.go

@@ -317,6 +317,70 @@ func TestValidateRequestBodyAndSetDefault(t *testing.T) {
                         }
                       }
                     ]
+                  },
+                  "contact": {
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "required": ["email"],
+                        "properties": {
+                          "email": {
+                            "type": "string"
+                          },
+                          "allow_image": {
+                            "type": "boolean",
+                            "default": true
+                          }
+                        },
+                        "additionalProperties": false
+                      },
+                      {
+                        "type": "object",
+                        "required": ["phone"],
+                        "properties": {
+                          "phone": {
+                            "type": "string"
+                          },
+                          "allow_text": {
+                            "type": "boolean",
+                            "default": false
+                          }
+                        },
+                        "additionalProperties": false
+                      }
+                    ]
+                  },
+                  "contact2": {
+                    "anyOf": [
+                      {
+                        "type": "object",
+                        "required": ["email"],
+                        "properties": {
+                          "email": {
+                            "type": "string"
+                          },
+                          "allow_image": {
+                            "type": "boolean",
+                            "default": true
+                          }
+                        },
+                        "additionalProperties": false
+                      },
+                      {
+                        "type": "object",
+                        "required": ["phone"],
+                        "properties": {
+                          "phone": {
+                            "type": "string"
+                          },
+                          "allow_text": {
+                            "type": "boolean",
+                            "default": false
+                          }
+                        },
+                        "additionalProperties": false
+                      }
+                    ]
                   }
                 }
               }
@@ -358,6 +422,10 @@ func TestValidateRequestBodyAndSetDefault(t *testing.T) {
 		FBLink   string `json:"fb_link,omitempty"`
 		TWLink   string `json:"tw_link,omitempty"`
 	}
+	type contact struct {
+		Email string `json:"email,omitempty"`
+		Phone string `json:"phone,omitempty"`
+	}
 	type body struct {
 		ID             string         `json:"id,omitempty"`
 		Name           string         `json:"name,omitempty"`
@@ -367,6 +435,8 @@ func TestValidateRequestBodyAndSetDefault(t *testing.T) {
 		Filters        []filter       `json:"filters,omitempty"`
 		SocialNetwork  *socialNetwork `json:"social_network,omitempty"`
 		SocialNetwork2 *socialNetwork `json:"social_network_2,omitempty"`
+		Contact        *contact       `json:"contact,omitempty"`
+		Contact2       *contact       `json:"contact2,omitempty"`
 	}
 
 	testCases := []struct {
@@ -656,6 +726,52 @@ func TestValidateRequestBodyAndSetDefault(t *testing.T) {
     "platform": "facebook",
     "fb_link": "www.facebook.com"
   }
+}
+        `, body)
+			},
+		},
+		{
+			name: "contact(oneOf)",
+			body: body{
+				ID: "bt6kdc3d0cvp6u8u3ft0",
+				Contact: &contact{
+					Phone: "123456",
+				},
+			},
+			bodyAssertion: func(t *testing.T, body string) {
+				require.JSONEq(t, `
+{
+  "id": "bt6kdc3d0cvp6u8u3ft0",
+  "name": "default",
+  "code": 123,
+  "all": false,
+  "contact": {
+    "phone": "123456",
+    "allow_text": false
+  }
+}
+        `, body)
+			},
+		},
+		{
+			name: "contact(anyOf)",
+			body: body{
+				ID: "bt6kdc3d0cvp6u8u3ft0",
+				Contact2: &contact{
+					Phone: "123456",
+				},
+			},
+			bodyAssertion: func(t *testing.T, body string) {
+				require.JSONEq(t, `
+{
+  "id": "bt6kdc3d0cvp6u8u3ft0",
+  "name": "default",
+  "code": 123,
+  "all": false,
+  "contact2": {
+    "phone": "123456",
+    "allow_text": false
+  }
 }
         `, body)
 			},