MinidumpLocationDescriptorListWriter

minidump/minidump_location_descriptor_list_writer_test.cc

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// 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
+//
+//     http://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 "minidump/minidump_location_descriptor_list_writer.h"
+
+#include "base/strings/stringprintf.h"
+#include "gtest/gtest.h"
+#include "minidump/test/minidump_writable_test_util.h"
+#include "util/file/string_file_writer.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+class TestMinidumpWritable final : public internal::MinidumpWritable {
+ public:
+  explicit TestMinidumpWritable(uint32_t value)
+      : MinidumpWritable(),
+        value_(value) {
+  }
+
+  ~TestMinidumpWritable() override {}
+
+ protected:
+  // MinidumpWritable:
+
+  size_t SizeOfObject() override { return sizeof(value_); }
+
+  bool WriteObject(FileWriterInterface* file_writer) override {
+    return file_writer->Write(&value_, sizeof(value_));
+  }
+
+ private:
+  uint32_t value_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestMinidumpWritable);
+};
+
+class TestMinidumpLocationDescriptorListWriter final
+    : public MinidumpLocationDescriptorListWriter {
+ public:
+  TestMinidumpLocationDescriptorListWriter()
+      : MinidumpLocationDescriptorListWriter() {
+  }
+
+  ~TestMinidumpLocationDescriptorListWriter() {}
+
+  void AddChild(scoped_ptr<TestMinidumpWritable> child) {
+    MinidumpLocationDescriptorListWriter::AddChild(child.Pass());
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestMinidumpLocationDescriptorListWriter);
+};
+
+const MinidumpLocationDescriptorList* MinidumpLocationDescriptorListAtStart(
+    const std::string& file_contents,
+    size_t count) {
+  MINIDUMP_LOCATION_DESCRIPTOR location_descriptor;
+  location_descriptor.DataSize = sizeof(MinidumpLocationDescriptorList) +
+                                 count * sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
+  location_descriptor.Rva = 0;
+  return MinidumpWritableAtLocationDescriptor<MinidumpLocationDescriptorList>(
+      file_contents, location_descriptor);
+}
+
+TEST(MinidumpLocationDescriptorListWriter, Empty) {
+  TestMinidumpLocationDescriptorListWriter list_writer;
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+  EXPECT_EQ(sizeof(MinidumpLocationDescriptorList),
+            file_writer.string().size());
+
+  const MinidumpLocationDescriptorList* list =
+      MinidumpLocationDescriptorListAtStart(file_writer.string(), 0);
+  ASSERT_TRUE(list);
+
+  EXPECT_EQ(0u, list->count);
+}
+
+TEST(MinidumpLocationDescriptorListWriter, OneChild) {
+  TestMinidumpLocationDescriptorListWriter list_writer;
+
+  const uint32_t kValue = 0;
+  auto child_writable = make_scoped_ptr(new TestMinidumpWritable(kValue));
+  list_writer.AddChild(child_writable.Pass());
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+
+  const MinidumpLocationDescriptorList* list =
+      MinidumpLocationDescriptorListAtStart(file_writer.string(), 1);
+  ASSERT_TRUE(list);
+
+  ASSERT_EQ(1u, list->count);
+
+  const uint32_t* child = MinidumpWritableAtLocationDescriptor<uint32_t>(
+      file_writer.string(), list->children[0]);
+  ASSERT_TRUE(child);
+  EXPECT_EQ(kValue, *child);
+}
+
+TEST(MinidumpLocationDescriptorListWriter, ThreeChildren) {
+  TestMinidumpLocationDescriptorListWriter list_writer;
+
+  const uint32_t kValues[] = { 0x80000000, 0x55555555, 0x66006600 };
+
+  auto child_writable_0 = make_scoped_ptr(new TestMinidumpWritable(kValues[0]));
+  list_writer.AddChild(child_writable_0.Pass());
+
+  auto child_writable_1 = make_scoped_ptr(new TestMinidumpWritable(kValues[1]));
+  list_writer.AddChild(child_writable_1.Pass());
+
+  auto child_writable_2 = make_scoped_ptr(new TestMinidumpWritable(kValues[2]));
+  list_writer.AddChild(child_writable_2.Pass());
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+
+  const MinidumpLocationDescriptorList* list =
+      MinidumpLocationDescriptorListAtStart(file_writer.string(), 3);
+  ASSERT_TRUE(list);
+
+  ASSERT_EQ(arraysize(kValues), list->count);
+
+  for (size_t index = 0; index < arraysize(kValues); ++index) {
+    SCOPED_TRACE(base::StringPrintf("index %zu", index));
+
+    const uint32_t* child = MinidumpWritableAtLocationDescriptor<uint32_t>(
+        file_writer.string(), list->children[index]);
+    ASSERT_TRUE(child);
+    EXPECT_EQ(kValues[index], *child);
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad