Initial release

2026-08-16 18:27:57 +07:00
commit 8ff9ca0fc0
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+// Copyright (c) 2016 The WebM project authors. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS.  All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+#include "src/var_int_parser.h"
+
+#include "gtest/gtest.h"
+
+#include "test_utils/parser_test.h"
+#include "webm/status.h"
+
+using webm::ParserTest;
+using webm::Status;
+using webm::VarIntParser;
+
+namespace {
+
+class VarIntParserTest : public ParserTest<VarIntParser> {};
+
+TEST_F(VarIntParserTest, NoMarkerBit) {
+  SetReaderData({0x00});
+  ParseAndExpectResult(Status::kInvalidElementValue);
+}
+
+TEST_F(VarIntParserTest, EarlyEndOfFile) {
+  SetReaderData({0x01});
+  ParseAndExpectResult(Status::kEndOfFile);
+}
+
+TEST_F(VarIntParserTest, ValidValue) {
+  SetReaderData({0x80});
+  ParseAndVerify();
+  EXPECT_EQ(static_cast<std::uint64_t>(0), parser_.value());
+  EXPECT_EQ(1, parser_.encoded_length());
+
+  ResetParser();
+  SetReaderData({0x01, 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE});
+  ParseAndVerify();
+  EXPECT_EQ(static_cast<std::uint64_t>(0x123456789ABCDE), parser_.value());
+  EXPECT_EQ(8, parser_.encoded_length());
+}
+
+TEST_F(VarIntParserTest, IncrementalParse) {
+  SetReaderData({0x11, 0x23, 0x45, 0x67});
+  IncrementalParseAndVerify();
+  EXPECT_EQ(static_cast<std::uint64_t>(0x01234567), parser_.value());
+  EXPECT_EQ(4, parser_.encoded_length());
+}
+
+}  // namespace