Improve test allocator API

Add a simple API for setting up the failing allocator to avoid manually
tinkering with its members.  Conveniently, this also avoids confusing cppcheck.

1 files changed, 2 insertions, 2 deletions

diff --git a/test/test_string_view.c b/test/test_string_view.c
index 76ceab5..764edcb 100644
--- a/test/test_string_view.c
+++ b/test/test_string_view.c
@@ -95,7 +95,7 @@ test_copy(void)
   ZixFailingAllocator allocator = zix_failing_allocator();
 
   // Copying a string takes exactly one allocation
-  allocator.n_remaining = 1U;
+  zix_failing_allocator_reset(&allocator, 1U);
 
   char* const copy = zix_string_view_copy(&allocator.base, orig);
   assert(copy);
@@ -103,7 +103,7 @@ test_copy(void)
   zix_free(&allocator.base, copy);
 
   // Check that allocation failure is handled gracefully
-  allocator.n_remaining = 0U;
+  zix_failing_allocator_reset(&allocator, 0U);
   assert(!zix_string_view_copy(&allocator.base, orig));
 }