fix: allow non-existent stub path when @noCallThru is set at stub lev…

…el (#245)

lib/proxyquire.js

@@ -132,7 +132,7 @@ Proxyquire.prototype.load = function (request, stubs) {
 // Resolves a stub relative to a module.
 // `baseModule` is the module we're resolving from.  `pathToResolve` is the
 // module we want to resolve (i.e. the string passed to `require()`).
-Proxyquire.prototype._resolveModule = function (baseModule, pathToResolve) {
+Proxyquire.prototype._resolveModule = function (baseModule, pathToResolve, stubs) {
   try {
     return resolve.sync(pathToResolve, {
       basedir: path.dirname(baseModule),
@@ -153,9 +153,22 @@ Proxyquire.prototype._resolveModule = function (baseModule, pathToResolve) {
     // back a different module than one that requires "./foo" from another
     // directory.  However, if !this._preserveCache, then we don't want to
     // throw, since we can resolve modules that don't exist.  Resolve as
-    // best we can.
-    if (!this._preserveCache || this._noCallThru) {
-      return path.resolve(path.dirname(baseModule), pathToResolve)
+    // best we can. We also need to check if the relative module has @noCallThru.
+    var moduleNoCallThru
+    var resolvedPath
+    if (hasOwnProperty.call(stubs, pathToResolve)) {
+      // pathToResolve is currently relative on stubs from _withoutCache() call
+      moduleNoCallThru = hasOwnProperty.call(stubs[pathToResolve], '@noCallThru') ? stubs[pathToResolve]['@noCallThru'] : undefined
+      resolvedPath = path.resolve(path.dirname(baseModule), pathToResolve)
+    } else {
+      resolvedPath = path.resolve(path.dirname(baseModule), pathToResolve)
+      if (hasOwnProperty.call(stubs, resolvedPath)) {
+        // after _withoutCache() alters stubs paths to be absolute
+        moduleNoCallThru = hasOwnProperty.call(stubs[resolvedPath], '@noCallThru') ? stubs[resolvedPath]['@noCallThru'] : undefined
+      }
+    }
+    if (!this._preserveCache || this._noCallThru || moduleNoCallThru) {
+      return resolvedPath
     }
 
     throw err
@@ -167,10 +180,9 @@ Proxyquire.prototype._require = function (module, stubs, path) {
   assert(typeof path === 'string', 'path must be a string')
   assert(path, 'missing path')
 
-  var resolvedPath = this._resolveModule(module.filename, path)
+  var resolvedPath = this._resolveModule(module.filename, path, stubs)
   if (hasOwnProperty.call(stubs, resolvedPath)) {
     var stub = stubs[resolvedPath]
-
     if (stub === null) {
       // Mimic the module-not-found exception thrown by node.js.
       throw moduleNotFoundError(path)
@@ -202,11 +214,10 @@ Proxyquire.prototype._withoutCache = function (module, stubs, path, func) {
   // Resolve all stubs to absolute paths.
   stubs = Object.keys(stubs)
     .reduce(function (result, stubPath) {
-      var resolvedStubPath = this._resolveModule(resolvedPath, stubPath)
+      var resolvedStubPath = this._resolveModule(resolvedPath, stubPath, stubs)
       result[resolvedStubPath] = stubs[stubPath]
       return result
     }.bind(this), {})
-
   // Override all require extension handlers
   var restoreExtensionHandlers = this._overrideExtensionHandlers(module, stubs)
 
@@ -287,7 +298,6 @@ Proxyquire.prototype._disableModuleCache = function (path, module) {
 
 Proxyquire.prototype._overrideExtensionHandlers = function (module, resolvedStubs) {
   /* eslint node/no-deprecated-api: [error, {ignoreGlobalItems: ["require.extensions"]}] */
-
   var originalExtensions = {}
   var self = this
 

test/proxyquire-notexisting.js

@@ -4,6 +4,7 @@ var assert = require('assert')
 var proxyquire = require('..')
 var path = require('path')
 var fooPath = path.join(__dirname, './samples/notexisting/foo.js')
+var fooRelativePath = path.join(__dirname, './samples/notexisting/foo-relative.js')
 
 describe('When resolving foo that requires stubbed /not/existing/bar.json', function () {
   it('throws an error', function () {
@@ -34,3 +35,12 @@ describe('When resolving foo that requires stubbed /not/existing/bar.json with n
     proxyquire.callThru()
   })
 })
+
+describe('When resolving foo-relative that requires relative stubbed ../not/existing/bar.json with @noCallThru', function () {
+  it('resolves foo-relative with stubbed bar', function () {
+    var fooRelative = proxyquire(fooRelativePath, {
+      '../not/existing/bar.json': { config: 'bar\'s config', '@noCallThru': true }
+    })
+    assert.strictEqual(fooRelative.config, 'bar\'s config')
+  })
+})

test/samples/notexisting/foo-relative.js

@@ -0,0 +1,5 @@
+var bar = require('../not/existing/bar.json')
+
+module.exports = {
+  config: bar.config
+}