add permanent flag for schema configuration property assumeValid (#4244)

closes #3448

Author: yaacovCR

src/type/__tests__/schema-test.ts

@@ -24,6 +24,7 @@ import {
 } from '../introspection.js';
 import { GraphQLBoolean, GraphQLInt, GraphQLString } from '../scalars.js';
 import { GraphQLSchema } from '../schema.js';
+import { validateSchema } from '../validate.js';
 
 describe('Type System: Schema', () => {
   it('Define sample schema', () => {
@@ -432,11 +433,21 @@ describe('Type System: Schema', () => {
   describe('Validity', () => {
     describe('when not assumed valid', () => {
       it('configures the schema to still needing validation', () => {
-        expect(
-          new GraphQLSchema({
-            assumeValid: false,
-          }).__validationErrors,
-        ).to.equal(undefined);
+        const schema = new GraphQLSchema({
+          assumeValid: false,
+        });
+        expect(schema.assumeValid).to.equal(false);
+        expect(schema.__validationErrors).to.equal(undefined);
+      });
+
+      it('configures the schema to have required validation even once validated', () => {
+        const schema = new GraphQLSchema({
+          assumeValid: false,
+        });
+        const validationErrors = validateSchema(schema);
+        expect(validationErrors.length).to.be.greaterThan(0);
+        expect(validationErrors).to.equal(schema.__validationErrors);
+        expect(schema.assumeValid).to.equal(false);
       });
     });
 
@@ -486,11 +497,11 @@ describe('Type System: Schema', () => {
 
     describe('when assumed valid', () => {
       it('configures the schema to have no errors', () => {
-        expect(
-          new GraphQLSchema({
-            assumeValid: true,
-          }).__validationErrors,
-        ).to.deep.equal([]);
+        const schema = new GraphQLSchema({
+          assumeValid: true,
+        });
+        expect(schema.assumeValid).to.equal(true);
+        expect(schema.__validationErrors).to.deep.equal([]);
       });
     });
   });

src/type/schema.ts

@@ -138,7 +138,7 @@ export class GraphQLSchema {
   astNode: Maybe<SchemaDefinitionNode>;
   extensionASTNodes: ReadonlyArray<SchemaExtensionNode>;
 
-  // Used as a cache for validateSchema().
+  assumeValid: boolean;
   __validationErrors: Maybe<ReadonlyArray<GraphQLError>>;
 
   private _queryType: Maybe<GraphQLObjectType>;
@@ -159,6 +159,8 @@ export class GraphQLSchema {
   constructor(config: Readonly<GraphQLSchemaConfig>) {
     // If this schema was built from a source known to be valid, then it may be
     // marked with assumeValid to avoid an additional type system validation.
+    this.assumeValid = config.assumeValid ?? false;
+    // Used as a cache for validateSchema().
     this.__validationErrors = config.assumeValid === true ? [] : undefined;
 
     this.description = config.description;
@@ -384,7 +386,7 @@ export class GraphQLSchema {
       extensions: this.extensions,
       astNode: this.astNode,
       extensionASTNodes: this.extensionASTNodes,
-      assumeValid: this.__validationErrors !== undefined,
+      assumeValid: this.assumeValid,
     };
   }
 }