Import Mbed OS hard-float snapshot

TESTS/mbed_hal/minimum_requirements/main.cpp

@@ -0,0 +1,73 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "utest/utest.h"
+#include "unity/unity.h"
+#include "greentea-client/test_env.h"
+
+#include "mbed.h"
+
+using namespace utest::v1;
+
+/**
+ * This test is intended to gate devices that do not have enough RAM to run
+ * Mbed os. Devices passing this test should have enough RAM to run all
+ * other Mbed OS tests.
+ *
+ * If your device does not pass this test, then you should determine the
+ * cause of high memory usage and fix it. If you cannot free enough memory,
+ * then you should turn off Mbed OS support for this device.
+ */
+
+#define MIN_HEAP_SIZE   2048
+#define MIN_DATA_SIZE   2048
+
+volatile uint8_t test_buffer[MIN_DATA_SIZE];
+
+static void minimum_heap_test()
+{
+    void *mem = malloc(MIN_HEAP_SIZE);
+    TEST_ASSERT_NOT_EQUAL(NULL, mem);
+    free(mem);
+}
+
+static void minimum_data_test()
+{
+    // Use test buffer so it is not optimized away
+    for (int i = 0; i < MIN_DATA_SIZE; i++) {
+        test_buffer[i] = i & 0xFF;
+    }
+}
+
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(30, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Case cases[] = {
+    Case("Minimum heap test", minimum_heap_test),
+    Case("Minimum data test", minimum_data_test),
+};
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main()
+{
+    Harness::run(specification);
+}