1 files changed, 66 insertions, 0 deletions
diff --git a/mocha_test/reduce.js b/mocha_test/reduce.js
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+++ b/mocha_test/reduce.js
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+var async = require('../lib');
+var expect = require('chai').expect;
+var assert = require('assert');
+
+describe('reduce', function() {
+
+    it('reduce', function(done) {
+        var call_order = [];
+        async.reduce([1,2,3], 0, function(a, x, callback){
+            call_order.push(x);
+            callback(null, a + x);
+        }, function(err, result){
+            assert(err === null, err + " passed instead of 'null'");
+            expect(result).to.equal(6);
+            expect(call_order).to.eql([1,2,3]);
+            done();
+        });
+    });
+
+    it('reduce async with non-reference memo', function(done) {
+        async.reduce([1,3,2], 0, function(a, x, callback){
+            setTimeout(function(){callback(null, a + x);}, Math.random()*100);
+        }, function(err, result){
+            expect(result).to.equal(6);
+            done();
+        });
+    });
+
+    it('reduce error', function(done) {
+        async.reduce([1,2,3], 0, function(a, x, callback){
+            callback('error');
+        }, function(err){
+            expect(err).to.equal('error');
+        });
+        setTimeout(done, 50);
+    });
+
+    it('inject alias', function(done) {
+        expect(async.inject).to.equal(async.reduce);
+        done();
+    });
+
+    it('foldl alias', function(done) {
+        expect(async.foldl).to.equal(async.reduce);
+        done();
+    });
+
+    it('reduceRight', function(done) {
+        var call_order = [];
+        var a = [1,2,3];
+        async.reduceRight(a, 0, function(a, x, callback){
+            call_order.push(x);
+            callback(null, a + x);
+        }, function(err, result){
+            expect(result).to.equal(6);
+            expect(call_order).to.eql([3,2,1]);
+            expect(a).to.eql([1,2,3]);
+            done();
+        });
+    });
+
+    it('foldr alias', function(done) {
+        expect(async.foldr).to.equal(async.reduceRight);
+        done();
+    });
+});