use custom rewire over require

Author: ShMcK

lib/writeTests/helpers.js

@@ -1,6 +1,6 @@
 "use strict";
 function helpers(projectDir) {
-    return "\n  // run time compiler\n  require('babel-core/register')({plugins: [['transform-es2015-modules-commonjs',{\n  loose:true}]]});\n\n  // fileExists test helper\n  function fileExists(e,r){void 0===r&&(r=!0);try{accessSync(e,F_OK)}catch(c){if(c)return r||console.log(c),!1}return!0}var _require=require(\"fs\"),accessSync=_require.accessSync,F_OK=_require.F_OK,_require2=require(\"path\"),resolve=_require2.resolve;function exists(p){return fileExists(resolve('" + projectDir + "',p))}\n\n  // overwrite require to catch globals in tests\n  require = require('rewire');\n  ";
+    return "\n  // run time compiler\n  require('babel-core/register')({plugins: [['transform-es2015-modules-commonjs',{\n  loose:true}]]});\n\n  // fileExists test helper\n  function fileExists(e,r){void 0===r&&(r=!0);try{accessSync(e,F_OK)}catch(c){if(c)return r||console.log(c),!1}return!0}var _require=require(\"fs\"),accessSync=_require.accessSync,F_OK=_require.F_OK,_require2=require(\"path\"),resolve=_require2.resolve;function exists(p){return fileExists(resolve('" + projectDir + "',p))}\n\n  // overwrite require to catch globals in tests\n  require = require('rewire');\n\n";
 }
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.default = helpers;

lib/writeTests/import-paths.js

@@ -4,22 +4,23 @@ var importPathRegex = /require\(["'](BASE.+)["']\);?$|^import.+?\s?["'](BASE.+)[
 var relativePathRegex = /^BASE/;
 function fixImportPaths(dir, str) {
     var entries = new Set([]);
-    var arr = str.split('\n').map(function (line) {
+    return str.split('\n').map(function (line) {
         var isMatch = line.match(importPathRegex);
         if (!isMatch) {
             return line;
         }
         var importPath = isMatch[1] || isMatch[2];
         if (importPath.match(relativePathRegex)) {
             var newPath = path_1.join(dir, importPath.replace('BASE', ''));
-            entries.add(line.replace(importPath, newPath));
+            var newLine = line.replace(importPath, newPath);
+            if (!entries.has(newLine)) {
+                entries.add(newLine);
+                return newLine;
+            }
             return '';
         }
         return line;
-    });
-    return (Array.from(entries.keys())
-        .concat(arr)
-        .join('\n'));
+    }).join('\n');
 }
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.default = fixImportPaths;

package.json

@@ -35,7 +35,6 @@
   },
   "devDependencies": {
     "chai": "^3.5.0",
-    "chai-as-promised": "^5.3.0",
     "chai-spies": "^0.7.1"
   }
 }

src/writeTests/helpers.ts

@@ -9,5 +9,6 @@ export default function helpers(projectDir) {
 
   // overwrite require to catch globals in tests
   require = require('rewire');
-  `;
+
+`;
 }

src/writeTests/import-paths.ts

@@ -13,7 +13,7 @@ export default function fixImportPaths(dir: string, str: string): string {
   // collect import lines
   let entries = new Set([]);
 
-  let arr = str.split('\n').map(line => {
+  return str.split('\n').map(line => {
     // line has an import or require ?
     const isMatch = line.match(importPathRegex);
     if (!isMatch) {
@@ -23,22 +23,18 @@ export default function fixImportPaths(dir: string, str: string): string {
     const importPath = isMatch[1] || isMatch[2];
     // import path: may be relative or absolute
 
-    // relative path
+    // is a relative path
     if (importPath.match(relativePathRegex)) {
-
       let newPath = join(dir, importPath.replace('BASE', ''));
-
+      let newLine = line.replace(importPath, newPath);
       // add to map of entry files
-      entries.add(line.replace(importPath, newPath));
+      if (!entries.has(newLine)) {
+        entries.add(newLine);
+        return newLine;
+      }
       return '';
     }
 		// no match, return line
     return line;
-  });
-  // prepend import paths to output
-  return (
-    Array.from(entries.keys())
-    .concat(arr)
-    .join('\n')
-  );
+  }).join('\n');
 }