test: add callback order test

Ensure that idle callbacks run before other callbacks.
joyent · May 22, 2012 · a478847 · a478847
1 parent 80b5541
commit a478847
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diff --git a/test/test-callback-order.c b/test/test-callback-order.c
@@ -0,0 +1,76 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+static int idle_cb_called;
+static int timer_cb_called;
+
+static uv_idle_t idle_handle;
+static uv_timer_t timer_handle;
+
+
+/* idle_cb should run before timer_cb */
+static void idle_cb(uv_idle_t* handle, int status) {
+  ASSERT(idle_cb_called == 0);
+  ASSERT(timer_cb_called == 0);
+  uv_idle_stop(handle);
+  idle_cb_called++;
+}
+
+
+static void timer_cb(uv_timer_t* handle, int status) {
+  ASSERT(idle_cb_called == 1);
+  ASSERT(timer_cb_called == 0);
+  uv_timer_stop(handle);
+  timer_cb_called++;
+}
+
+
+static void next_tick(uv_idle_t* handle, int status) {
+  uv_loop_t* loop = handle->loop;
+  uv_idle_stop(handle);
+  uv_idle_init(loop, &idle_handle);
+  uv_idle_start(&idle_handle, idle_cb);
+  uv_timer_init(loop, &timer_handle);
+  uv_timer_start(&timer_handle, timer_cb, 0, 0);
+}
+
+
+TEST_IMPL(callback_order) {
+  uv_loop_t* loop;
+  uv_idle_t idle;
+
+  loop = uv_default_loop();
+  uv_idle_init(loop, &idle);
+  uv_idle_start(&idle, next_tick);
+
+  ASSERT(idle_cb_called == 0);
+  ASSERT(timer_cb_called == 0);
+
+  uv_run(loop);
+
+  ASSERT(idle_cb_called == 1);
+  ASSERT(timer_cb_called == 1);
+
+  return 0;
+}
diff --git a/test/test-list.h b/test/test-list.h
@@ -20,6 +20,7 @@
  */
 
 TEST_DECLARE   (platform_output)
+TEST_DECLARE   (callback_order)
 TEST_DECLARE   (tty)
 TEST_DECLARE   (stdio_over_pipes)
 TEST_DECLARE   (ipc_listen_before_write)
@@ -181,6 +182,7 @@ HELPER_DECLARE (pipe_echo_server)
 TASK_LIST_START
   TEST_OUTPUT_ENTRY  (platform_output)
 
+  TEST_ENTRY  (callback_order)
   TEST_ENTRY  (pipe_connect_bad_name)
   TEST_ENTRY  (pipe_connect_to_file)
 

diff --git a/uv.gyp b/uv.gyp
@@ -301,6 +301,7 @@
         'test/test-async.c',
         'test/test-error.c',
         'test/test-callback-stack.c',
+        'test/test-callback-order.c',
         'test/test-connection-fail.c',
         'test/test-cwd-and-chdir.c',
         'test/test-delayed-accept.c',