refactor: tests (#393)

Author: evilebottnawi

README.md

@@ -68,8 +68,8 @@ module.exports = {
 |         [`force`](#force)         |      `{Boolean}`      |                     `false`                     | Overwrites files already in `compilation.assets` (usually added by other plugins/loaders).            |
 |        [`ignore`](#ignore)        |       `{Array}`       |                      `[]`                       | Globs to ignore files.                                                                                |
 |       [`flatten`](#flatten)       |      `{Boolean}`      |                     `false`                     | Removes all directory references and only copies file names.                                          |
-|     [`transform`](#transform)     | `{Function\|Promise}` |                   `undefined`                   | Allows to modify the file contents.                                                                   |
 |         [`cache`](#cache)         |  `{Boolean\|Object}`  |                     `false`                     | Enable `transform` caching. You can use `{ cache: { key: 'my-cache-key' } }` to invalidate the cache. |
+|     [`transform`](#transform)     | `{Function\|Promise}` |                   `undefined`                   | Allows to modify the file contents.                                                                   |
 | [`transformPath`](#transformPath) | `{Function\|Promise}` |                   `undefined`                   | Allows to modify the writing path.                                                                    |
 
 #### `from`
@@ -324,14 +324,13 @@ module.exports = {
 };
 ```
 
-#### `transform`
-
-Type: `Function|Promise`
-Default: `undefined`
+#### `cache`
 
-Allows to modify the file contents.
+Type: `Boolean|Object`
+Default: `false`
 
-##### `{Function}`
+Enable/disable `transform` caching. You can use `{ cache: { key: 'my-cache-key' } }` to invalidate the cache.
+Default path to cache directory: `node_modules/.cache/copy-webpack-plugin`.
 
 **webpack.config.js**
 
@@ -345,13 +344,21 @@ module.exports = {
         transform(content, path) {
           return optimize(content);
         },
+        cache: true,
       },
     ]),
   ],
 };
 ```
 
-##### `{Promise}`
+#### `transform`
+
+Type: `Function|Promise`
+Default: `undefined`
+
+Allows to modify the file contents.
+
+##### `{Function}`
 
 **webpack.config.js**
 
@@ -363,21 +370,15 @@ module.exports = {
         from: 'src/*.png',
         to: 'dest/',
         transform(content, path) {
-          return Promise.resolve(optimize(content));
+          return optimize(content);
         },
       },
     ]),
   ],
 };
 ```
 
-#### `cache`
-
-Type: `Boolean|Object`
-Default: `false`
-
-Enable/disable `transform` caching. You can use `{ cache: { key: 'my-cache-key' } }` to invalidate the cache.
-Default path to cache directory: `node_modules/.cache/copy-webpack-plugin`.
+##### `{Promise}`
 
 **webpack.config.js**
 
@@ -389,9 +390,8 @@ module.exports = {
         from: 'src/*.png',
         to: 'dest/',
         transform(content, path) {
-          return optimize(content);
+          return Promise.resolve(optimize(content));
         },
-        cache: true,
       },
     ]),
   ],