Fix callAt bug

Author: dcarp

dub.json

@@ -3,7 +3,9 @@
     "description": "Asynchonous IO library for D",
     "license": "Boost 1.0",
     "copyright": "Copyright © 2014-2015 Dragoş Carp",
-    "authors": ["Dragoş Carp"],
+    "authors": [
+        "Dragoş Carp"
+    ],
     "targetType": "library",
     "targetPath": "build",
     "workingDirectory": "build",
@@ -13,6 +15,13 @@
     "configurations": [
         {
             "name": "library"
+        },
+        {
+            "name": "unittest",
+            "targetType": "executable",
+            "sourcePaths": ["test"],
+            "buildOptions": ["debugInfoC", "unittests"],
+            "dflags": ["-main"]
         }
     ]
 }

src/asynchronous/events.d

@@ -369,7 +369,7 @@ abstract class EventLoop
      *
      * This method’s behavior is the same as $(D_PSYMBOL callLater()).
      */
-    final auto callAt(Callback, Args...)(SysTime when, Dg dg, Args args)
+    final auto callAt(Dg, Args...)(SysTime when, Dg dg, Args args)
     {
         auto callback = new Callback!(Dg, Args)(this, dg, args);
 

test/events.d

@@ -0,0 +1,66 @@
+import asynchronous;
+
+unittest
+{
+    auto loop = getEventLoop;
+    bool fooCalled = false;
+
+    void foo()
+    {
+        fooCalled = true;
+        loop.stop;
+    }
+
+    loop.callSoon(&foo);
+    loop.runForever;
+
+    assert(fooCalled);
+}
+
+unittest
+{
+    import std.datetime : msecs;
+
+    auto loop = getEventLoop;
+    auto t1 = loop.time;
+    bool fooCalled = false;
+
+    void foo()
+    {
+        fooCalled = true;
+        loop.stop;
+    }
+
+    loop.callLater(5.msecs, &foo);
+    loop.runForever;
+
+    assert(fooCalled);
+
+    auto t2 = loop.time;
+
+    assert(t2 - t1 >= 5.msecs);
+}
+
+unittest
+{
+    import std.datetime : msecs, Clock;
+
+    auto loop = getEventLoop;
+    auto t1 = loop.time;
+    bool fooCalled = false;
+
+    void foo()
+    {
+        fooCalled = true;
+        loop.stop;
+    }
+
+    loop.callAt(t1 + 5.msecs, &foo);
+    loop.runForever;
+
+    assert(fooCalled);
+
+    auto t2 = loop.time;
+
+    assert(t2 - t1 >= 5.msecs);
+}