diff --git a/src/test/unit/test_constructors.pf b/src/test/unit/test_constructors.pf
index 2b74432f..7e6c160e 100644
--- a/src/test/unit/test_constructors.pf
+++ b/src/test/unit/test_constructors.pf
@@ -81,12 +81,21 @@ subroutine test_torch_tensor_zeros()
   ! Check that the tensor values are all zero
   expected(:,:) = 0.0
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_zeros")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_zeros subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_tensor_zeros
 
@@ -132,12 +141,21 @@ subroutine test_torch_tensor_ones()
   ! Check that the tensor values are all one
   expected(:,:) = 1.0
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_ones")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_ones subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_tensor_ones
 
@@ -184,12 +202,21 @@ subroutine test_torch_from_array_1d()
   ! Compare the data in the tensor to the input data
   expected(:) = in_data
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_from_array")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_from_array subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_from_array_1d
 
@@ -236,12 +263,21 @@ subroutine test_torch_from_array_2d()
   ! Compare the data in the tensor to the input data
   expected(:,:) = in_data
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_from_array")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_from_array subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_from_array_2d
 
@@ -286,12 +322,21 @@ subroutine test_torch_from_array_3d()
   ! Compare the data in the tensor to the input data
   expected(:,:,:) = in_data
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_from_array")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_from_array subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_from_array_3d
 
@@ -340,11 +385,20 @@ subroutine test_torch_from_blob()
   ! Compare the data in the tensor to the input data 
   expected(:,:) = in_data
   test_pass = assert_allclose(out_data, expected, test_name="test_torch_tensor_from_blob")
-  @assertTrue(test_pass)
-  @assertEqual(shape(out_data), shape(expected))
+  if (.not. test_pass) then
+    call clean_up()
+    print *, "Error :: incorrect output from torch_tensor_from_array subroutine"
+    stop 999
+  end if
 
-  ! Cleanup
-  nullify(out_data)
-  call torch_tensor_delete(tensor)
+  call clean_up()
+
+  contains
+
+    ! Subroutine for freeing memory and nullifying pointers used in the unit test
+    subroutine clean_up()
+      nullify(out_data)
+      call torch_tensor_delete(tensor)
+    end subroutine clean_up
 
 end subroutine test_torch_from_blob