fix: add missing trailing slash (#204)

Author: Xavier59

packages/lockfile-lint-api/__tests__/validators.packageNames.test.js

@@ -15,7 +15,7 @@ describe('Validator: PackageName', () => {
 
   it('validator should fail if a resolved URL for a different package is found', () => {
     const failedPackage = 'meow'
-    const maliciousPackage = 'malicious'
+    const maliciousPackage = 'meowlicious'
     const mockedPackages = {
       '@babel/code-frame@^0.16.0': {
         resolved: 'https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz'

packages/lockfile-lint-api/src/validators/ValidatePackageNames.js

@@ -53,7 +53,7 @@ module.exports = class ValidatePackageNames {
 
         const packageNameOnly = this._getPackageNameOnly(packageName)
 
-        const expectedURLBeginning = `${packageResolvedURL.origin}/${packageNameOnly}`
+        const expectedURLBeginning = `${packageResolvedURL.origin}/${packageNameOnly}/`
 
         const isPassing = packageMetadata.resolved.startsWith(expectedURLBeginning)
         if (!isPassing) {