Add MinidumpRVAListWriter and test

minidump/minidump_rva_list_writer_test.cc

Index: minidump/minidump_rva_list_writer_test.cc
diff --git a/minidump/minidump_rva_list_writer_test.cc b/minidump/minidump_rva_list_writer_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..368f8a7285e5e75524e64aa641b85b95639c435b
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+++ b/minidump/minidump_rva_list_writer_test.cc
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+// 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_rva_list_writer.h"
+
+#include "base/strings/stringprintf.h"
+#include "gtest/gtest.h"
+#include "minidump/test/minidump_rva_list_test_util.h"
+#include "minidump/test/minidump_writable_test_util.h"
+#include "util/file/string_file_writer.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+class TestMinidumpRVAListWriter final : public MinidumpRVAListWriter {
+ public:
+  TestMinidumpRVAListWriter() : MinidumpRVAListWriter() {}
+  ~TestMinidumpRVAListWriter() override {}
+
+  void AddChild(uint32_t value) {
+    auto child = make_scoped_ptr(new TestUInt32MinidumpWritable(value));
+    MinidumpRVAListWriter::AddChild(child.Pass());
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestMinidumpRVAListWriter);
+};
+
+TEST(MinidumpRVAListWriter, Empty) {
+  TestMinidumpRVAListWriter list_writer;
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+  EXPECT_EQ(sizeof(MinidumpRVAList), file_writer.string().size());
+
+  const MinidumpRVAList* list = MinidumpRVAListAtStart(file_writer.string(), 0);
+  ASSERT_TRUE(list);
+}
+
+TEST(MinidumpRVAListWriter, OneChild) {
+  TestMinidumpRVAListWriter list_writer;
+
+  const uint32_t kValue = 0;
+  list_writer.AddChild(kValue);
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+
+  const MinidumpRVAList* list = MinidumpRVAListAtStart(file_writer.string(), 1);
+  ASSERT_TRUE(list);
+
+  const uint32_t* child = MinidumpWritableAtRVA<uint32_t>(
+      file_writer.string(), list->children[0]);
+  ASSERT_TRUE(child);
+  EXPECT_EQ(kValue, *child);
+}
+
+TEST(MinidumpRVAListWriter, ThreeChildren) {
+  TestMinidumpRVAListWriter list_writer;
+
+  const uint32_t kValues[] = { 0x80000000, 0x55555555, 0x66006600 };
+
+  list_writer.AddChild(kValues[0]);
+  list_writer.AddChild(kValues[1]);
+  list_writer.AddChild(kValues[2]);
+
+  StringFileWriter file_writer;
+
+  ASSERT_TRUE(list_writer.WriteEverything(&file_writer));
+
+  const MinidumpRVAList* list =
+      MinidumpRVAListAtStart(file_writer.string(), arraysize(kValues));
+  ASSERT_TRUE(list);
+
+  for (size_t index = 0; index < arraysize(kValues); ++index) {
+    SCOPED_TRACE(base::StringPrintf("index %zu", index));
+
+    const uint32_t* child = MinidumpWritableAtRVA<uint32_t>(
+        file_writer.string(), list->children[index]);
+    ASSERT_TRUE(child);
+    EXPECT_EQ(kValues[index], *child);
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad