tests: add stack test cases which use unified kernel

add stack test cases which cover basic api usage across
threads and thread/isr.

Change-Id: I1f42fa1139899c932a14da18753b93972f561bc8
Signed-off-by: jing wang <jing.j.wang@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>

tests/kernel/stack/stack_api/Makefile

@@ -0,0 +1,4 @@
+BOARD ?= qemu_x86
+CONF_FILE = prj.conf
+
+include ${ZEPHYR_BASE}/Makefile.inc

tests/kernel/stack/stack_api/prj.conf

@@ -0,0 +1,2 @@
+CONFIG_ZTEST=y
+CONFIG_IRQ_OFFLOAD=y

tests/kernel/stack/stack_api/src/Makefile

@@ -0,0 +1,3 @@
+include $(ZEPHYR_BASE)/tests/Makefile.test
+
+obj-y = main.o test_stack_contexts.o test_stack_fail.o

tests/kernel/stack/stack_api/src/main.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * 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.
+ */
+
+/**
+ * @addtogroup t_stack
+ * @{
+ * @defgroup t_stack_api test_stack_api
+ * @}
+ */
+
+#include <ztest.h>
+extern void test_stack_thread2thread(void);
+extern void test_stack_thread2isr(void);
+extern void test_stack_pop_fail(void);
+
+/*test case main entry*/
+void test_main(void *p1, void *p2, void *p3)
+{
+	ztest_test_suite(test_stack_api,
+			 ztest_unit_test(test_stack_thread2thread),
+			 ztest_unit_test(test_stack_thread2isr),
+			 ztest_unit_test(test_stack_pop_fail));
+	ztest_run_test_suite(test_stack_api);
+}

tests/kernel/stack/stack_api/src/test_stack_contexts.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * 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.
+ */
+
+/**
+ * @addtogroup t_stack_api
+ * @{
+ * @defgroup t_stack_api_basic test_stack_api_basic
+ * @brief TestPurpose: verify zephyr stack apis under different context
+ * - API coverage
+ *   -# k_stack_init K_STACK_DEFINE
+ *   -# k_stack_push
+ *   -# k_stack_pop
+ * @}
+ */
+
+#include <ztest.h>
+#include <irq_offload.h>
+
+#define STACK_SIZE 512
+#define STACK_LEN 2
+
+/**TESTPOINT: init via K_STACK_DEFINE*/
+K_STACK_DEFINE(kstack, STACK_LEN);
+static struct k_stack stack;
+
+static char __noinit __stack threadstack[STACK_SIZE];
+static uint32_t data[STACK_LEN] = { 0xABCD, 0x1234 };
+static struct k_sem end_sema;
+
+static void tstack_push(struct k_stack *pstack)
+{
+	for (int i = 0; i < STACK_LEN; i++) {
+		/**TESTPOINT: stack push*/
+		k_stack_push(pstack, data[i]);
+	}
+}
+
+static void tstack_pop(struct k_stack *pstack)
+{
+	uint32_t rx_data;
+
+	for (int i = STACK_LEN - 1; i >= 0; i--) {
+		/**TESTPOINT: stack pop*/
+		assert_false(k_stack_pop(pstack, &rx_data, K_NO_WAIT), NULL);
+		assert_equal(rx_data, data[i], NULL);
+	}
+}
+
+/*entry of contexts*/
+static void tIsr_entry_push(void *p)
+{
+	tstack_push((struct k_stack *)p);
+}
+
+static void tIsr_entry_pop(void *p)
+{
+	tstack_pop((struct k_stack *)p);
+}
+
+static void tThread_entry(void *p1, void *p2, void *p3)
+{
+	tstack_pop((struct k_stack *)p1);
+	k_sem_give(&end_sema);
+	tstack_push((struct k_stack *)p1);
+	k_sem_give(&end_sema);
+}
+
+static void tstack_thread_thread(struct k_stack *pstack)
+{
+	k_sem_init(&end_sema, 0, 1);
+	/**TESTPOINT: thread-thread data passing via stack*/
+	k_tid_t tid = k_thread_spawn(threadstack, STACK_SIZE,
+				     tThread_entry, pstack, NULL, NULL,
+				     K_PRIO_PREEMPT(0), 0, 0);
+	tstack_push(pstack);
+	k_sem_take(&end_sema, K_FOREVER);
+
+	k_sem_take(&end_sema, K_FOREVER);
+	tstack_pop(pstack);
+
+	/* clear the spawn thread to avoid side effect */
+	k_thread_abort(tid);
+}
+
+static void tstack_thread_isr(struct k_stack *pstack)
+{
+	k_sem_init(&end_sema, 0, 1);
+	/**TESTPOINT: thread-isr data passing via stack*/
+	irq_offload(tIsr_entry_push, pstack);
+	tstack_pop(pstack);
+
+	tstack_push(pstack);
+	irq_offload(tIsr_entry_pop, pstack);
+}
+
+/*test cases*/
+void test_stack_thread2thread(void)
+{
+	/**TESTPOINT: test k_stack_init stack*/
+	k_stack_init(&stack, data, STACK_LEN);
+	tstack_thread_thread(&stack);
+
+	/**TESTPOINT: test K_STACK_INIT stack*/
+	tstack_thread_thread(&kstack);
+}
+
+void test_stack_thread2isr(void)
+{
+	/**TESTPOINT: test k_stack_init stack*/
+	k_stack_init(&stack, data, STACK_LEN);
+	tstack_thread_isr(&stack);
+
+	/**TESTPOINT: test K_STACK_INIT stack*/
+	tstack_thread_isr(&kstack);
+}

tests/kernel/stack/stack_api/src/test_stack_fail.c

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * 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.
+ */
+
+/**
+ * @addtogroup t_stack_api
+ * @{
+ * @defgroup t_stack_fail_pop test_stack_fail_pop
+ * @brief TestPurpose: verify zephyr stack pop when empty
+ * - API coverage
+ *   -# k_stack_pop
+ * @}
+ */
+
+#include <ztest.h>
+#include <irq_offload.h>
+
+#define TIMEOUT 100
+#define STACK_LEN 2
+
+static uint32_t data[STACK_LEN];
+
+/*test cases*/
+void test_stack_pop_fail(void *p1, void *p2, void *p3)
+{
+	struct k_stack stack;
+	uint32_t rx_data;
+
+	k_stack_init(&stack, data, STACK_LEN);
+	/**TESTPOINT: stack pop returns -EBUSY*/
+	assert_equal(k_stack_pop(&stack, &rx_data, K_NO_WAIT), -EBUSY, NULL);
+	/**TESTPOINT: stack pop returns -EAGAIN*/
+	assert_equal(k_stack_pop(&stack, &rx_data, TIMEOUT), -EAGAIN, NULL);
+}

tests/kernel/stack/stack_api/testcase.ini

@@ -0,0 +1,2 @@
+[test]
+tags = kernel