refactor: init cypress-cucumber-preprocessor install.

node_modules/browserify/test/multi_bundle_unique.js

@@ -0,0 +1,56 @@
+var browserify = require('../');
+var vm = require('vm');
+var fs = require('fs');
+var path = require('path');
+var test = require('tap').test;
+var prelude = fs.readFileSync(path.join(__dirname, 'multi_bundle', '_prelude.js'), 'utf8');
+
+test('unique require', function (t) {
+    t.plan(6);
+
+    var core = browserify({
+        externalRequireName: 'unique_require',
+        prelude: prelude
+    });
+    core.require(__dirname + '/multi_bundle/b.js', { expose: './b' });
+
+    var app = browserify(
+        [__dirname + '/multi_bundle/a.js'],
+        { prelude: prelude }
+    );
+    // inform this bundle that b exists in another bundle
+    app.external('./b');
+
+    core.bundle(function (err, src) {
+        var c = {
+            console: console,
+            t : t,
+            baton: {
+                times: 0
+            }
+        };
+
+        // loading core will cause no require to run
+        vm.runInNewContext(src, c);
+        t.equal(c.baton.times, 0);
+
+        // loading the app will require
+        app.bundle(function (err, src) {
+            vm.runInNewContext(src, c);
+
+            // b required for the first time
+            t.equal(c.baton.times, 1);
+
+            // running the file again
+            // because it is using the same b, no reloading
+            vm.runInNewContext(src, c);
+
+            // b should not have been required again
+            // because it was part of the core bundle
+            t.equal(c.baton.times, 1);
+            
+            t.equal(c.unique_require('./b'), 'foo');
+        });
+    });
+});
+