fix(NODE-5559): account for quotes when inspecting Code and BSONSymbol (#612)

Author: addaleax

src/code.ts

@@ -62,7 +62,7 @@ export class Code extends BSONValue {
 
   inspect(): string {
     const codeJson = this.toJSON();
-    return `new Code("${String(codeJson.code)}"${
+    return `new Code(${JSON.stringify(String(codeJson.code))}${
       codeJson.scope != null ? `, ${JSON.stringify(codeJson.scope)}` : ''
     })`;
   }

src/symbol.ts

@@ -34,7 +34,7 @@ export class BSONSymbol extends BSONValue {
   }
 
   inspect(): string {
-    return `new BSONSymbol("${this.value}")`;
+    return `new BSONSymbol(${JSON.stringify(this.value)})`;
   }
 
   toJSON(): string {

test/node/code.test.ts

@@ -1,5 +1,6 @@
 import { expect } from 'chai';
 import * as BSON from '../register-bson';
+import { inspect } from 'util';
 
 describe('class Code', () => {
   it('defines a nodejs inspect method', () => {
@@ -8,6 +9,13 @@ describe('class Code', () => {
       .that.is.a('function');
   });
 
+  it('prints re-evaluatable output for Code that contains quotes', () => {
+    const codeStringInput = new BSON.Code('function a(){ return "asdf"; }');
+    expect(inspect(codeStringInput)).to.equal(
+      String.raw`new Code("function a(){ return \"asdf\"; }")`
+    );
+  });
+
   describe('new Code()', () => {
     it('defines a code property that is a string', () => {
       const codeStringInput = new BSON.Code('function a(){}');

test/node/symbol.test.ts

@@ -1,6 +1,7 @@
 import { expect } from 'chai';
 import { BSONSymbol, BSON } from '../register-bson';
 import { bufferFromHexArray } from './tools/utils';
+import { inspect } from 'util';
 
 describe('class BSONSymbol', () => {
   it('get _bsontype returns BSONSymbol', () => {
@@ -41,4 +42,9 @@ describe('class BSONSymbol', () => {
     const result = BSON.deserialize(bytes, { promoteValues: false });
     expect(result).to.have.nested.property('sym._bsontype', 'BSONSymbol');
   });
+
+  it('prints re-evaluatable output for BSONSymbol that contains quotes', () => {
+    const input = new BSONSymbol('asdf"ghjk');
+    expect(inspect(input)).to.equal(String.raw`new BSONSymbol("asdf\"ghjk")`);
+  });
 });