Add support for custom allocators

This makes it explicit in the API where memory is allocated, and allows the
user to provide a custom allocator to avoid the use of the default system
allocator for whatever reason.

1 files changed, 23 insertions, 1 deletions

diff --git a/test/test_world.c b/test/test_world.c
index 3f7f6ea6..7ff20143 100644
--- a/test/test_world.c
+++ b/test/test_world.c
@@ -3,6 +3,8 @@
 
 #undef NDEBUG
 
+#include "failing_allocator.h"
+
 #include "serd/node.h"
 #include "serd/world.h"
 
@@ -11,9 +13,28 @@
 #include <string.h>
 
 static void
+test_new_failed_alloc(void)
+{
+  SerdFailingAllocator allocator = serd_failing_allocator();
+
+  // Successfully allocate a world to count the number of allocations
+  SerdWorld* const world = serd_world_new(&allocator.base);
+  assert(world);
+
+  // Test that each allocation failing is handled gracefully
+  const size_t n_new_allocs = allocator.n_allocations;
+  for (size_t i = 0; i < n_new_allocs; ++i) {
+    allocator.n_remaining = i;
+    assert(!serd_world_new(&allocator.base));
+  }
+
+  serd_world_free(world);
+}
+
+static void
 test_get_blank(void)
 {
-  SerdWorld* world = serd_world_new();
+  SerdWorld* world = serd_world_new(NULL);
   char       expected[12];
 
   for (unsigned i = 0; i < 32; ++i) {
@@ -29,6 +50,7 @@ test_get_blank(void)
 int
 main(void)
 {
+  test_new_failed_alloc();
   test_get_blank();
 
   return 0;