fix(sample-gen): first oneOf or anyOf should be combined with schema (#6775)

* fix(sample-gen): oneOf and anyOf should be merge into schema

when there was oneOf or anyOf defined it just used the first schema of it to generate the samples.
Now, the first oneOf or anyOf is combined with the schema to generate samples.

* test(sample-gen): oneOf and anyOf should be combined with schema

src/core/plugins/samples/fn.js

@@ -48,12 +48,62 @@ const liftSampleHelper = (oldSchema, target) => {
   if(target.xml === undefined && oldSchema.xml !== undefined) {
     target.xml = oldSchema.xml
   }
+  if(target.type === undefined && oldSchema.type !== undefined) {
+    target.type = oldSchema.type
+  }
   return target
 }
 
 export const sampleFromSchemaGeneric = (schema, config={}, exampleOverride = undefined, respectXML = false) => {
+  schema = objectify(schema)
+  let usePlainValue = exampleOverride !== undefined || schema.example !== undefined || schema && schema.default !== undefined
+  // first check if there is the need of combining this schema with others required by allOf
+  const hasOneOf = !usePlainValue && schema && schema.oneOf && schema.oneOf.length > 0
+  const hasAnyOf = !usePlainValue && schema && schema.anyOf && schema.anyOf.length > 0
+  if(!usePlainValue && (hasOneOf || hasAnyOf)) {
+    const schemaToAdd = objectify(hasOneOf
+      ? schema.oneOf[0]
+      : schema.anyOf[0]
+    )
+    liftSampleHelper(schemaToAdd, schema)
+    if(!schema.xml && schemaToAdd.xml) {
+      schema.xml = schemaToAdd.xml
+    }
+    if(schema.example !== undefined && schemaToAdd.example !== undefined) {
+      usePlainValue = true
+    } else if(schemaToAdd.properties) {
+      if(!schema.properties) {
+        schema.properties = {}
+      }
+      let props = objectify(schemaToAdd.properties)
+      for (let propName in props) {
+        if (!props.hasOwnProperty(propName)) {
+          continue
+        }
+        if ( props[propName] && props[propName].deprecated ) {
+          continue
+        }
+        if ( props[propName] && props[propName].readOnly && !config.includeReadOnly ) {
+          continue
+        }
+        if ( props[propName] && props[propName].writeOnly && !config.includeWriteOnly ) {
+          continue
+        }
+        if(!schema.properties[propName]) {
+          schema.properties[propName] = props[propName]
+          if(!schemaToAdd.required && Array.isArray(schemaToAdd.required) && schemaToAdd.required.indexOf(propName) !== -1) {
+            if(!schema.required) {
+              schema.required = [propName]
+            } else {
+              schema.required.push(propName)
+            }
+          }
+        }
+      }
+    }
+  }
   const _attr = {}
-  let { xml, type, example, properties, additionalProperties, items } = objectify(schema)
+  let { xml, type, example, properties, additionalProperties, items } = schema
   let { includeReadOnly, includeWriteOnly } = config
   xml = xml || {}
   let { name, prefix, namespace } = xml
@@ -77,18 +127,6 @@ export const sampleFromSchemaGeneric = (schema, config={}, exampleOverride = und
     res[displayName] = []
   }
 
-  const usePlainValue = exampleOverride !== undefined || example !== undefined || schema && schema.default !== undefined
-
-  const hasOneOf = !usePlainValue && schema && schema.oneOf && schema.oneOf.length > 0
-  const hasAnyOf = !usePlainValue && schema && schema.anyOf && schema.anyOf.length > 0
-  if(!usePlainValue && (hasOneOf || hasAnyOf)) {
-    const someSchema = hasOneOf
-      ? schema.oneOf[0]
-      : schema.anyOf[0]
-    liftSampleHelper(schema, someSchema)
-    return sampleFromSchemaGeneric(someSchema, config, undefined, respectXML)
-  }
-
   // try recover missing type
   if(schema && !type) {
     if(properties || additionalProperties) {
@@ -105,6 +143,7 @@ export const sampleFromSchemaGeneric = (schema, config={}, exampleOverride = und
   let addPropertyToResult
   if(respectXML) {
     addPropertyToResult = (propName, overrideE = undefined) => {
+
       if(schema) {
         // case it is an xml attribute
         props[propName].xml = props[propName].xml || {}
@@ -139,9 +178,11 @@ export const sampleFromSchemaGeneric = (schema, config={}, exampleOverride = und
       }
     }
   } else {
-    addPropertyToResult = (propName, overrideE) =>
+    addPropertyToResult = (propName, overrideE) => {
+
       res[propName] = sampleFromSchemaGeneric(props[propName], config, overrideE, respectXML)
     }
+  }
 
   // check for plain value and if found use it to generate sample from it
   if(usePlainValue) {

test/unit/core/plugins/samples/fn.js

@@ -29,6 +29,72 @@ describe("sampleFromSchema", () => {
     expect(sampleFromSchema(definition, { includeReadOnly: false })).toEqual(expected)
   })
 
+  it("combine first oneOf or anyOf with schema's definitions", function () {
+    let definition = {
+      type: "object",
+      anyOf: [
+        {
+          type: "object",
+          properties: {
+            test2: {
+              type: "string",
+              example: "anyOf"
+            },
+            test: {
+              type: "string",
+              example: "anyOf"
+            }
+          }
+        }
+      ],
+      properties: {
+        test: {
+          type: "string",
+          example: "schema"
+        }
+      }
+    }
+
+    let expected = {
+      test: "schema",
+      test2: "anyOf"
+    }
+
+    expect(sampleFromSchema(definition, { includeReadOnly: false })).toEqual(expected)
+
+    definition = {
+      type: "object",
+      oneOf: [
+        {
+          type: "object",
+          properties: {
+            test2: {
+              type: "string",
+              example: "oneOf"
+            },
+            test: {
+              type: "string",
+              example: "oneOf"
+            }
+          }
+        }
+      ],
+      properties: {
+        test: {
+          type: "string",
+          example: "schema"
+        }
+      }
+    }
+
+    expected = {
+      test: "schema",
+      test2: "oneOf"
+    }
+
+    expect(sampleFromSchema(definition, { includeReadOnly: false })).toEqual(expected)
+  })
+
   it("returns object with no readonly fields for parameter", function () {
     let definition = {
       type: "object",