Added driver testing example and cleanup the buildandtest script

examples/driver_testing/driver.test.cpp

@@ -0,0 +1,52 @@
+#if 1
+extern "C"
+{
+#include "driver.h"
+#include "registers.h"
+}
+#include "../../fff.h"
+#include <gtest/gtest.h>
+
+
+extern "C"
+{
+    static uint8_t readVal;
+    static int readCalled;
+    static uint32_t readRegister;
+    uint8_t IO_MEM_RD8(uint32_t reg)
+    {
+        readRegister = reg;
+        readCalled++;
+        return readVal;
+    }
+
+    static uint32_t writeRegister;
+    static uint8_t writeVal;
+    static int writeCalled;
+    void IO_MEM_WR8(uint32_t reg, uint8_t val)
+    {
+        writeRegister = reg;
+        writeVal = val;
+        writeCalled++;
+    }
+}
+
+TEST(Driver, When_writing_Then_writes_data_to_DRIVER_OUTPUT_REGISTER)
+{
+    driver_write(0x34);
+    ASSERT_EQ(1u, writeCalled);
+    ASSERT_EQ(0x34u, writeVal);
+    ASSERT_EQ(DRIVER_OUTPUT_REGISTER, writeRegister);
+}
+
+
+TEST(Driver, When_reading_data_Then_reads_from_DRIVER_INPUT_REGISTER)
+{
+    readVal = 0x55;
+    uint8_t returnedValue = driver_read();
+    ASSERT_EQ(1u, readCalled);
+    ASSERT_EQ(0x55u, returnedValue);
+    ASSERT_EQ(readRegister, DRIVER_INPUT_REGISTER);
+}
+
+#endif