Addressed issue #75

go.mod

@@ -3,7 +3,7 @@ module github.com/pb33f/libopenapi-validator
 go 1.21
 
 require (
-	github.com/pb33f/libopenapi v0.16.3
+	github.com/pb33f/libopenapi v0.16.4
 	github.com/santhosh-tekuri/jsonschema/v5 v5.3.1
 	github.com/stretchr/testify v1.9.0
 	github.com/vmware-labs/yaml-jsonpath v0.3.2

go.sum

@@ -54,8 +54,8 @@ github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1y
 github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
 github.com/onsi/gomega v1.19.0 h1:4ieX6qQjPP/BfC3mpsAtIGGlxTWPeA3Inl/7DtXw1tw=
 github.com/onsi/gomega v1.19.0/go.mod h1:LY+I3pBVzYsTBU1AnDwOSxaYi9WoWiqgwooUqq9yPro=
-github.com/pb33f/libopenapi v0.16.3 h1:ozo0vYdeP6r+qAXb+Kg1MOy6QrTxSgNpoD3nKuw/HA8=
-github.com/pb33f/libopenapi v0.16.3/go.mod h1:PEXNwvtT4KNdjrwudp5OYnD1ryqK6uJ68aMNyWvoMuc=
+github.com/pb33f/libopenapi v0.16.4 h1:mX81EkBS7cbJZeJiw2ovXchGGHCLvfj26gGs4jL1XDU=
+github.com/pb33f/libopenapi v0.16.4/go.mod h1:PEXNwvtT4KNdjrwudp5OYnD1ryqK6uJ68aMNyWvoMuc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/santhosh-tekuri/jsonschema/v5 v5.3.1 h1:lZUw3E0/J3roVtGQ+SCrUrg3ON6NgVqpn3+iol9aGu4=

requests/validate_body_test.go

@@ -6,6 +6,7 @@ package requests
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"testing"
 
@@ -1194,3 +1195,139 @@ components:
 	assert.Equal(t, "invalid character '}' looking for beginning of object key string", errors[0].SchemaValidationErrors[0].Reason)
 
 }
+
+func TestValidateBody_SchemaNoType_Issue75(t *testing.T) {
+
+	spec := `{
+  "openapi": "3.0.1",
+  "info": {
+    "title": "testing",
+    "description": "<p>This is for testing purpose</p>",
+    "version": "1.0",
+    "x-targetEndpoint": "https://mocktarget.apigee.net/json"
+  },
+  "servers": [
+    {
+      "url": "https://some-url.com"
+    }
+  ],
+  "paths": {
+    "/path1": {
+      "put": {
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "anyOf": [
+                  {
+                    "type": "object",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "minLength": 1
+                      },
+                      "age": {
+                        "type": "integer"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ]
+                  },
+                  {
+                    "type": "object",
+                    "properties": {
+                      "email": {
+                        "type": "string"
+                      },
+                      "address": {
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "email"
+                    ]
+                  }
+                ]
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
+    "/path2": {
+      "get": {
+        "parameters": [
+          {
+            "name": "X-My-Header",
+            "in": "header",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
+    "/path3": {
+      "get": {
+        "parameters": [
+          {
+            "name": "id",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "integer"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    }
+  }
+}
+`
+
+	doc, err := libopenapi.NewDocument([]byte(spec))
+	if err != nil {
+		fmt.Println("error while creating open api spec document", err)
+		return
+	}
+
+	req, err := http.NewRequest("PUT", "/path1", nil)
+	if err != nil {
+		fmt.Println("error while creating new HTTP request", err)
+		return
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	v3Model, errs := doc.BuildV3Model()
+	if len(errs) > 0 {
+		fmt.Println("error while building a Open API spec V3 model", errs)
+		return
+	}
+
+	reqBodyValidator := NewRequestBodyValidator(&v3Model.Model)
+	isSuccess, valErrs := reqBodyValidator.ValidateRequestBody(req)
+
+	assert.False(t, isSuccess)
+	assert.Len(t, valErrs, 1)
+	assert.Equal(t, "PUT request body is empty for '/path1'", valErrs[0].Message)
+
+}

requests/validate_request.go

@@ -74,6 +74,17 @@ func ValidateRequestSchema(
 
 	// no request body? but we do have a schema?
 	if len(requestBody) <= 0 && len(jsonSchema) > 0 {
+
+		line := -1
+		col := -1
+		if schema.Type != nil {
+			line = schema.GoLow().Type.KeyNode.Line
+			col = schema.GoLow().Type.KeyNode.Column
+		} else {
+			line = schema.ParentProxy.GetSchemaKeyNode().Line
+			col = schema.ParentProxy.GetSchemaKeyNode().Line
+		}
+
 		// cannot decode the request body, so it's not valid
 		violation := &errors.SchemaValidationFailure{
 			Reason:          "request body is empty, but there is a schema defined",
@@ -86,8 +97,8 @@ func ValidateRequestSchema(
 			Message: fmt.Sprintf("%s request body is empty for '%s'",
 				request.Method, request.URL.Path),
 			Reason:                 "The request body is empty but there is a schema defined",
-			SpecLine:               schema.GoLow().Type.KeyNode.Line,
-			SpecCol:                schema.GoLow().Type.KeyNode.Line,
+			SpecLine:               line,
+			SpecCol:                col,
 			SchemaValidationErrors: []*errors.SchemaValidationFailure{violation},
 			HowToFix:               errors.HowToFixInvalidSchema,
 			Context:                string(renderedSchema), // attach the rendered schema to the error