refactor: init cypress-cucumber-preprocessor install.

node_modules/browser-pack/test/source-maps-existing.js

@@ -0,0 +1,59 @@
+var test = require('tap').test;
+var pack = require('../');
+var convert = require('convert-source-map');
+var parse = require('parse-base64vlq-mappings');
+
+var foo = { 
+    version: 3,
+    file: 'foo.js',
+    sourceRoot: '',
+    sources: [ 'foo.coffee' ],
+    names: [],
+    mappings: ';AAAA;CAAA;CAAA,CAAA,CAAA,IAAO,GAAK;CAAZ',
+    sourcesContent: [ 'console.log(require \'./bar.js\')\n' ] };
+
+test('pack one file with source file field and existing sourcemap', function (t) {
+    t.plan(7);
+    
+    var mapComment = convert.fromObject(foo).toComment();
+    var fooMappings = parse(foo.mappings);
+
+    var p = pack();
+    var src = '';
+    p.on('data', function (buf) { src += buf });
+    p.on('end', function () {
+
+        var sm = convert.fromSource(src).toObject();
+        var mappings = parse(sm.mappings);
+
+        var remainingMaps = src.match(convert.commentRegex);
+
+        // remove map for _prelude.js
+        mappings.shift();
+
+        var fstMap = mappings[0];
+        var fstFooMap = fooMappings[0];
+        var lstMap = mappings.pop();
+        var lstFooMap = fooMappings.pop();
+
+        t.deepEqual(fstMap.original, fstFooMap.original, 'first original mappings are same');
+        t.deepEqual(lstMap.original, lstFooMap.original, 'last original mappings are same');
+
+        t.equal(fstMap.generated.column, fstFooMap.generated.column, 'first generated columns are same');
+        t.equal(lstMap.generated.column, lstFooMap.generated.column, 'last generated columns are same');
+
+        t.equal(fstMap.generated.line, fstFooMap.generated.line + 1, 'first generated line is offset by 1');
+        t.equal(lstMap.generated.line, lstFooMap.generated.line + 1, 'last generated line is offset by 1');
+
+        t.equal(remainingMaps.length, 1, 'removes orinal source maps');
+    });
+    
+    p.end(JSON.stringify([
+        {
+            id: 'xyz',
+            source: '(function() {\n\n  console.log(require(\'./bar.js\'));\n\n}).call(this);\n' + '\n' + mapComment,
+            sourceFile: 'foo.js'
+        }
+    ]));
+});
+