First commit

node_modules/vasync/tests/compat.js

@@ -0,0 +1,104 @@
+/*
+ * tests/compat.js: Some of the APIs provided by vasync are intended to be
+ * API-compatible with node-async, so we incorporate the tests from node-async
+ * directly here.  These are copied from https://github.com/caolan/async,
+ * available under the MIT license.  To make it easy to update this from the
+ * source, this file should remain unchanged from the source except for this
+ * header comment, the change to the "require" line, and deleted lines for
+ * unimplemented functions.
+ *
+ * The following tests are deliberately omitted:
+ *
+ * o "waterfall non-array": Per Joyent's Best Practices for Node.js Error
+ *   Handling, we're strict about argument types and throw on these programmer
+ *   errors rather than emitting them asynchronously.
+ *
+ * o "waterfall multiple callback calls": We deliberately disallow a waterfall
+ *   function to invoke its callback more than once, so we don't test for that
+ *   here.  The behavior that node-async allows can potentially be used to fork
+ *   the waterfall, which may be useful, but it's often used instead as an
+ *   excuse to write code sloppily.  And the downside is that it makes it really
+ *   hard to understand bugs where the waterfall was resumed too early.  For
+ *   now, we're disallowing it, but if the forking behavior becomes useful, we
+ *   can always make our version less strict.
+ */
+var async = require('../lib/vasync');
+
+exports['waterfall'] = function(test){
+    test.expect(6);
+    var call_order = [];
+    async.waterfall([
+        function(callback){
+            call_order.push('fn1');
+            setTimeout(function(){callback(null, 'one', 'two');}, 0);
+        },
+        function(arg1, arg2, callback){
+            call_order.push('fn2');
+            test.equals(arg1, 'one');
+            test.equals(arg2, 'two');
+            setTimeout(function(){callback(null, arg1, arg2, 'three');}, 25);
+        },
+        function(arg1, arg2, arg3, callback){
+            call_order.push('fn3');
+            test.equals(arg1, 'one');
+            test.equals(arg2, 'two');
+            test.equals(arg3, 'three');
+            callback(null, 'four');
+        },
+        function(arg4, callback){
+            call_order.push('fn4');
+            test.same(call_order, ['fn1','fn2','fn3','fn4']);
+            callback(null, 'test');
+        }
+    ], function(err){
+        test.done();
+    });
+};
+
+exports['waterfall empty array'] = function(test){
+    async.waterfall([], function(err){
+        test.done();
+    });
+};
+
+exports['waterfall no callback'] = function(test){
+    async.waterfall([
+        function(callback){callback();},
+        function(callback){callback(); test.done();}
+    ]);
+};
+
+exports['waterfall async'] = function(test){
+    var call_order = [];
+    async.waterfall([
+        function(callback){
+            call_order.push(1);
+            callback();
+            call_order.push(2);
+        },
+        function(callback){
+            call_order.push(3);
+            callback();
+        },
+        function(){
+            test.same(call_order, [1,2,3]);
+            test.done();
+        }
+    ]);
+};
+
+exports['waterfall error'] = function(test){
+    test.expect(1);
+    async.waterfall([
+        function(callback){
+            callback('error');
+        },
+        function(callback){
+            test.ok(false, 'next function should not be called');
+            callback();
+        }
+    ], function(err){
+        test.equals(err, 'error');
+    });
+    setTimeout(test.done, 50);
+};