1 files changed, 81 insertions, 0 deletions
diff --git a/pw_allocator/allocator_testing.cc b/pw_allocator/allocator_testing.cc
new file mode 100644
index 000000000..269c47d1d
--- /dev/null
+++ b/pw_allocator/allocator_testing.cc
@@ -0,0 +1,81 @@
+// Copyright 2023 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "pw_allocator/allocator_testing.h"
+
+#include "pw_assert/check.h"
+
+namespace pw::allocator::test {
+
+AllocatorForTest::~AllocatorForTest() {
+  for (auto* block : allocator_.blocks()) {
+    PW_DCHECK(
+        !block->Used(),
+        "The block at %p was still in use when its allocator was "
+        "destroyed. All memory allocated by an allocator must be released "
+        "before the allocator goes out of scope.",
+        static_cast<void*>(block));
+  }
+}
+
+Status AllocatorForTest::Init(ByteSpan bytes) {
+  ResetParameters();
+  return allocator_.Init(bytes);
+}
+
+void AllocatorForTest::Exhaust() {
+  for (auto* block : allocator_.blocks()) {
+    block->MarkUsed();
+  }
+}
+
+void AllocatorForTest::ResetParameters() {
+  allocate_size_ = 0;
+  deallocate_ptr_ = nullptr;
+  deallocate_size_ = 0;
+  resize_ptr_ = nullptr;
+  resize_old_size_ = 0;
+  resize_new_size_ = 0;
+}
+
+void AllocatorForTest::DeallocateAll() {
+  for (auto* block : allocator_.blocks()) {
+    BlockType::Free(block);
+  }
+  ResetParameters();
+}
+
+Status AllocatorForTest::DoQuery(const void* ptr, Layout layout) const {
+  return allocator_.Query(ptr, layout);
+}
+
+void* AllocatorForTest::DoAllocate(Layout layout) {
+  allocate_size_ = layout.size();
+  return allocator_.Allocate(layout);
+}
+
+void AllocatorForTest::DoDeallocate(void* ptr, Layout layout) {
+  deallocate_ptr_ = ptr;
+  deallocate_size_ = layout.size();
+  return allocator_.Deallocate(ptr, layout);
+}
+
+bool AllocatorForTest::DoResize(void* ptr, Layout layout, size_t new_size) {
+  resize_ptr_ = ptr;
+  resize_old_size_ = layout.size();
+  resize_new_size_ = new_size;
+  return allocator_.Resize(ptr, layout, new_size);
+}
+
+}  // namespace pw::allocator::test