Add test for @ prefixed webpack aliases with absolute path values

test/fixtures/webpack.config.js

@@ -1,10 +1,13 @@
 'use strict';
 
+const path = require('path');
+
 module.exports = {
   entry: './index.js',
   resolve: {
     alias: {
-      F: './node_modules/filing-cabinet'
+      F: './node_modules/filing-cabinet',
+      '@': path.resolve(__dirname, 'webpack/src'),
     }
   }
 };

test/fixtures/webpack/at-aliased.js

@@ -0,0 +1 @@
+var foo = require('@/foo');

test/fixtures/webpack/src/foo.js

@@ -0,0 +1 @@
+module.exports = {};

test/resolvers.test.mjs

@@ -40,6 +40,19 @@ describe('webpack', () => {
 
     assert.equal(results.some(filename => filename.includes(filingCabinetPath)), true);
   });
+
+  it('resolves @ prefixed aliases with absolute path values', () => {
+    const atAliasedSrcPath = path.normalize('webpack/src/foo.js');
+
+    const results = dependencyTree.toList({
+      filename: fixtures('webpack', 'at-aliased.js'),
+      directory: root,
+      webpackConfig,
+      filter: filename => filename.includes(path.join('webpack', 'src'))
+    });
+
+    assert.equal(results.some(filename => filename.includes(atAliasedSrcPath)), true);
+  });
 });
 
 describe('requirejs', () => {