test: add meaningful tests, coverage

Author: shellscape

lib/index.js

@@ -29,25 +29,27 @@ class WebpackPluginRamdisk {
   constructor(opts = {}) {
     const valid = validate(opts);
 
+    /* istanbul ignore if */
     if (valid.error) {
       error(chalk.red(`⬢ ${key}:`), `An option was passed to ${name} that is not valid`);
       throw valid.error;
     }
 
     const options = Object.assign({}, defaults, opts);
+    const diskPath = init(options);
+
+    this.diskPath = diskPath;
     this.options = options;
   }
 
-  async apply(compiler) {
-    const diskPath = await init(this.options);
+  apply(compiler) {
     const { output } = compiler.options;
-    const outputPath = join(diskPath, output.path || 'dist');
-
-    this.options.diskPath = diskPath;
+    const outputPath = join(this.diskPath, output.path || 'dist');
 
     /* eslint-disable no-param-reassign */
     compiler.options.output = Object.assign({}, compiler.options.output, { path: outputPath });
     compiler.outputPath = compiler.options.output.path;
+    this.outputPath = compiler.outputPath;
 
     info(chalk.blue(`⬡ ${key}:`), `Build being written to ${outputPath}`);
   }

lib/ramdisk.js

@@ -46,7 +46,7 @@ const mount = (options) => {
 };
 
 module.exports = {
-  async init(opts) {
+  init(opts) {
     const root = getRoot(opts.name);
     const blocks = opts.bytes / opts.blockSize;
     const options = Object.assign({}, opts, { blocks, root });