[Pkg-javascript-commits] [node-async] 363/480: Add invalid passing async.memoize() test

[Jonas Smedegaard]

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js pushed a commit to branch master
in repository node-async.

commit 0bdb2216c4762a5eeb4527fb3b3c063287943e84
Author: Ryan Graham <r.m.graham at gmail.com>
Date:   Sat Nov 23 21:40:44 2013 -0800

    Add invalid passing async.memoize() test
    
    This demonstrates the problem described in #304
---
 test/test-async.js | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/test/test-async.js b/test/test-async.js
index ff401e7..b92168a 100755
--- a/test/test-async.js
+++ b/test/test-async.js
@@ -2219,6 +2219,45 @@ exports['memoize'] = function (test) {
     test.done();
 };
 
+exports['memoize maintains asynchrony'] = function (test) {
+    test.expect(3);
+    var call_order = [];
+
+    var fn = function (arg1, arg2, callback) {
+        call_order.push(['fn', arg1, arg2]);
+        async.setImmediate(function () {
+            call_order.push(['cb', arg1, arg2]);
+            callback(null, arg1 + arg2);
+        });
+    };
+
+    var fn2 = async.memoize(fn);
+    fn2(1, 2, function (err, result) {
+        test.equal(result, 3);
+        fn2(1, 2, function (err, result) {
+            test.equal(result, 3);
+            async.nextTick(memoize_done);
+            call_order.push('tick3');
+        });
+        call_order.push('tick2');
+    });
+    call_order.push('tick1');
+
+    function memoize_done() {
+        var zalgo_call_order = [
+            ['fn',1,2],             // initial async call
+            'tick1',                // async caller
+            ['cb',1,2],             // async callback
+        //  ['fn',1,2], // memoized // memoized async body
+        //  ['cb',1,2], // memoized // memoized async response body
+            'tick3',                // handler for memoized async call
+            'tick2'                 // handler for first async call
+        ];
+        test.same(call_order, zalgo_call_order);
+        test.done();
+    }
+};
+
 exports['unmemoize'] = function(test) {
     test.expect(4);
     var call_order = [];

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