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diff --git a/test/rt/source/test/rt_test_sequence_004.c b/test/rt/source/test/rt_test_sequence_004.c
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+++ b/test/rt/source/test/rt_test_sequence_004.c
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+/*
+    ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include "hal.h"
+#include "ch_test.h"
+#include "rt_test_root.h"
+
+/**
+ * @file    rt_test_sequence_004.c
+ * @brief   Test Sequence 004 code.
+ *
+ * @page rt_test_sequence_004 [4] Suspend/Resume
+ *
+ * File: @ref rt_test_sequence_004.c
+ *
+ * <h2>Description</h2>
+ * This sequence tests the ChibiOS/RT functionalities related to
+ * threads suspend/resume.
+ *
+ * <h2>Test Cases</h2>
+ * - @subpage rt_test_004_001
+ * .
+ */
+
+/****************************************************************************
+ * Shared code.
+ ****************************************************************************/
+
+static thread_reference_t tr1;
+
+static THD_FUNCTION(thread1, p) {
+
+  chSysLock();
+  chThdResumeI(&tr1, MSG_OK);
+  chSchRescheduleS();
+  chSysUnlock();
+  test_emit_token(*(char *)p);
+}
+
+/****************************************************************************
+ * Test cases.
+ ****************************************************************************/
+
+/**
+ * @page rt_test_004_001 [4.1] Suspend and Resume functionality
+ *
+ * <h2>Description</h2>
+ * The functionality of chThdSuspendTimeoutS() and chThdResumeI() is
+ * tested.
+ *
+ * <h2>Test Steps</h2>
+ * - [4.1.1] The function chThdSuspendTimeoutS() is invoked, the thread
+ *   is remotely resumed with message @p MSG_OK. On return the message
+ *   and the state of the reference are tested.
+ * - [4.1.2] The function chThdSuspendTimeoutS() is invoked, the thread
+ *   is not resumed so a timeout must occur. On return the message and
+ *   the state of the reference are tested.
+ * .
+ */
+
+static void rt_test_004_001_setup(void) {
+  tr1 = NULL;
+}
+
+static void rt_test_004_001_execute(void) {
+  systime_t time;
+  msg_t msg;
+
+  /* [4.1.1] The function chThdSuspendTimeoutS() is invoked, the thread
+     is remotely resumed with message @p MSG_OK. On return the message
+     and the state of the reference are tested.*/
+  test_set_step(1);
+  {
+    threads[0] = chThdCreateStatic(wa[0], WA_SIZE, chThdGetPriorityX()-1, thread1, "A");
+    chSysLock();
+    msg = chThdSuspendTimeoutS(&tr1, TIME_INFINITE);
+    chSysUnlock();
+    test_assert(NULL == tr1, "not NULL");
+    test_assert(MSG_OK == msg,"wrong returned message");
+    test_wait_threads();
+  }
+
+  /* [4.1.2] The function chThdSuspendTimeoutS() is invoked, the thread
+     is not resumed so a timeout must occur. On return the message and
+     the state of the reference are tested.*/
+  test_set_step(2);
+  {
+    chSysLock();
+    time = chVTGetSystemTimeX();
+    msg = chThdSuspendTimeoutS(&tr1, TIME_MS2I(1000));
+    chSysUnlock();
+    test_assert_time_window(time + TIME_MS2I(1000),
+                            time + TIME_MS2I(1000) + CH_CFG_ST_TIMEDELTA + 1,
+                            "out of time window");
+    test_assert(NULL == tr1, "not NULL");
+    test_assert(MSG_TIMEOUT == msg, "wrong returned message");
+  }
+}
+
+static const testcase_t rt_test_004_001 = {
+  "Suspend and Resume functionality",
+  rt_test_004_001_setup,
+  NULL,
+  rt_test_004_001_execute
+};
+
+/****************************************************************************
+ * Exported data.
+ ****************************************************************************/
+
+/**
+ * @brief   Suspend/Resume.
+ */
+const testcase_t * const rt_test_sequence_004[] = {
+  &rt_test_004_001,
+  NULL
+};