add test for m.sync pr

docs/change-log.md

@@ -5,6 +5,7 @@
 ### Bug Fixes:
 
 -	`m.sync` now correctly passes arguments to resolver in same order as input arguments [#96](https://github.com/lhorie/mithril.js/issues/96) 
+-	fixed diff deletion bug [#99](https://github.com/lhorie/mithril.js/issues/99) 
 -	updating textarea attributes updates its value correctly [#100](https://github.com/lhorie/mithril.js/issues/100)
 
 ---

tests/mithril-tests.js

@@ -893,6 +893,15 @@ function testMithril(mock) {
 		deferred2.resolve("foo")
 		return value[0] === "test" && value[1] === "foo"
 	})
+	test(function() {
+		var value
+		var deferred1 = m.deferred()
+		var deferred2 = m.deferred()
+		m.sync([deferred1.promise, deferred2.promise]).then(function(data) {value = data})
+		deferred2.resolve("foo")
+		deferred1.resolve("test")
+		return value[0] === "test" && value[1] === "foo"
+	})
 
 	//m.startComputation/m.endComputation
 	test(function() {