Merge pull request #804 from skeggse/patch-1

Add explicit entry resolve error message

src/Bundle.js

@@ -89,6 +89,7 @@ export default class Bundle {
 		// of the entry module's dependencies
 		return this.resolveId( this.entry, undefined )
 			.then( id => {
+				if ( id == null ) throw new Error( `Could not resolve entry (${this.entry})` );
 				this.entryId = id;
 				return this.fetchModule( id, undefined );
 			})

test/function/check-resolve-for-entry/_config.js

@@ -0,0 +1,11 @@
+var assert = require( 'assert' );
+
+module.exports = {
+	description: 'checks that entry is resolved',
+	options: {
+		entry: '/not/a/path/that/actually/really/exists'
+	},
+	error: function ( err ) {
+		assert.ok( /Could not resolve entry/.test( err.message ) );
+	}
+};

test/function/load-returns-string-or-null/main.js

@@ -0,0 +1 @@
+throw new Error('should not be reached');