Implement unittests for Linux

Author: Seppo Takalo

test/mbed-client-randlib/unittest/randlib/test_randlib.c

@@ -4,6 +4,7 @@
 #include "test_randlib.h"
 #include <string.h>
 #include <inttypes.h>
+#include "randLIB.h"
 
 bool test_randLIB_seed_random()
 {

test/mbed-client-randlib/unittest/randlib_linux/Makefile

@@ -0,0 +1,20 @@
+include ../makefile_defines.txt
+
+COMPONENT_NAME = randLIB_linux_unit
+
+#This must be changed manually
+SRC_FILES = \
+        ../../../../linux/randLIB.c
+
+TEST_SRC_FILES = \
+	main.cpp \
+	randlibtest.cpp \
+	../randlib/test_randlib.c \
+	../stubs/random_stub.c \
+	../stubs/open_stub.c \
+
+include ../MakefileWorker.mk
+
+CPPUTESTFLAGS += -DFEA_TRACE_SUPPORT
+
+CPPUTEST_LDFLAGS = -Wl,--wrap,open

test/mbed-client-randlib/unittest/randlib_linux/main.cpp

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2015 ARM. All rights reserved.
+ */
+
+#include "CppUTest/CommandLineTestRunner.h"
+#include "CppUTest/TestPlugin.h"
+#include "CppUTest/TestRegistry.h"
+#include "CppUTestExt/MockSupportPlugin.h"
+int main(int ac, char** av)
+{
+    return CommandLineTestRunner::RunAllTests(ac, av);
+}
+
+IMPORT_TEST_GROUP(randLIB_linux);

test/mbed-client-randlib/unittest/randlib_linux/randlibtest.cpp

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 ARM. All rights reserved.
+ */
+#include "CppUTest/TestHarness.h"
+#include "../randlib/test_randlib.h"
+#include "randLIB.h"
+
+TEST_GROUP(randLIB_linux)
+{
+    void setup()
+    {
+    }
+
+    void teardown()
+    {
+    }
+};
+
+extern bool allow_open;
+
+TEST(randLIB_linux, test_randLIB_seed_random)
+{
+    allow_open = true;
+    CHECK(test_randLIB_seed_random());
+}
+
+TEST(randLIB_linux, test_randLIB_get_8bit)
+{
+    allow_open = true;
+    CHECK(test_randLIB_get_8bit());
+}
+
+TEST(randLIB_linux, test_randLIB_get_16bit)
+{
+    allow_open = true;
+    CHECK(test_randLIB_get_16bit());
+}
+
+TEST(randLIB_linux, test_randLIB_get_32bit)
+{
+    allow_open = true;
+    CHECK(test_randLIB_get_32bit());
+}
+
+TEST(randLIB_linux, test_randLIB_get_n_bytes_random)
+{
+    allow_open = true;
+    CHECK(test_randLIB_get_n_bytes_random());
+}
+
+TEST(randLIB_linux, test_randLIB_get_random_in_range)
+{
+    allow_open = true;
+    CHECK(test_randLIB_get_random_in_range());
+}
+
+TEST(randLIB_linux, test_randLIB_randomise_base)
+{
+    allow_open = true;
+    CHECK(test_randLIB_randomise_base());
+}
+
+TEST(randLIB_linux, test_fail_to_open)
+{
+    uint8_t buf[4];
+    allow_open = false;
+    CHECK(-1 == randLIB_get_n_bytes_random(buf, 4));
+    allow_open = true;
+}

test/mbed-client-randlib/unittest/stubs/open_stub.c

@@ -0,0 +1,24 @@
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdarg.h>
+
+bool allow_open = true;
+int __real_open(const char *path, int flags, ...);
+int __wrap_open(const char *path, int flags, ...)
+{
+	if (allow_open) {
+		if (flags & O_CREAT) {
+			va_list vl;
+			va_start(vl,flags);
+			mode_t mode = va_arg(vl, mode_t);
+			va_end(vl);
+			return __real_open(path, flags, mode);
+		} else {
+			return __real_open(path, flags);
+		}
+	} else {
+		return -1;
+	}
+}