Add testing/cudart.cu

Add TestCudaMemcpyD2DNullPointerError
Add TestCudaMallocResultAligned

Fixes issue 165.

testing/cudart.cu

@@ -0,0 +1,25 @@
+#include <unittest/unittest.h>
+#include <cuda_runtime_api.h>
+#include <thrust/detail/util/align.h>
+
+void TestCudaMemcpyD2DNullPointerError(void)
+{
+  cudaError_t result1 = cudaMemcpy((void*)0, (void*)0, 1, cudaMemcpyDeviceToDevice);
+  cudaError_t result2 = cudaGetLastError();
+
+  ASSERT_EQUAL(cudaErrorInvalidValue, result1);
+  ASSERT_EQUAL(cudaErrorInvalidValue, result2);
+}
+DECLARE_UNITTEST(TestCudaMemcpyD2DNullPointerError);
+
+template<typename T>
+void TestCudaMallocResultAligned(const std::size_t n)
+{
+  T *ptr = 0;
+  cudaMalloc(&ptr, n * sizeof(T));
+  cudaFree(ptr);
+
+  ASSERT_EQUAL(true, thrust::detail::util::is_aligned(ptr));
+}
+DECLARE_VARIABLE_UNITTEST(TestCudaMallocResultAligned);
+