fix

book/node_modules/a-sync-waterfall/test.js

@@ -0,0 +1,77 @@
+"use strict";
+const waterfall = require('./index');
+
+var generateSyncTask = function(index) {
+	return function (x){
+		return function(cb){
+			console.log(x);
+			cb(null);
+		};
+	}(index);
+};
+
+
+var generateAsyncTask = function(index) {
+	return function (x){
+		return function(cb){
+			setTimeout(function(){
+				console.log(x);
+				cb(null);
+			}, 0);
+		};
+	}(index);
+};
+
+var generateSyncTasks = function(count){
+	var tasks = [];
+	for(var i=0; i<count; i++) {
+		tasks.push(generateSyncTask(i));
+	}
+	return tasks;
+}
+
+var generateAsyncTasks = function(count){
+	var tasks = [];
+	for(var i=0; i<count; i++) {
+		tasks.push(generateAsyncTask(i));
+	}
+	return tasks;
+}
+
+
+var generateRandomTasks = function(count){
+	var tasks = [];
+	for(var i=0; i<count; i++) {
+		Math.random() > .5 ? tasks.push(generateAsyncTask(i)) : tasks.push(generateSyncTask(i))
+	}
+	return tasks;
+}
+
+var done = function(){
+	console.log('done');
+}
+
+var testSync = function(){
+	waterfall(generateSyncTasks(10), done);
+	console.log('this text should be after waterfall');
+
+};
+
+var testAsync = function(){
+	waterfall(generateAsyncTasks(5), done);
+	console.log('this text should be before waterfall');
+};
+
+var testMixed = function(){
+	waterfall(generateRandomTasks(20), done);
+};
+
+
+console.log('testSync:');
+testSync();
+
+// console.log('\ntestAsync: ');
+// testAsync();
+
+console.log('\ntestMixed: ');
+testMixed();