Add a new incremental parsing API

Change-Id: I6b921766836d58df0281fb23b2add3f62a478e14

webm_parser/tests/float_parser_test.cc

@@ -0,0 +1,63 @@
+// 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/float_parser.h"
+
+#include "gtest/gtest.h"
+
+#include "test_utils/element_parser_test.h"
+#include "webm/status.h"
+
+using webm::ElementParserTest;
+using webm::FloatParser;
+using webm::kUnknownElementSize;
+using webm::Status;
+
+namespace {
+
+class FloatParserTest : public ElementParserTest<FloatParser> {};
+
+TEST_F(FloatParserTest, InvalidSize) {
+  TestInit(1, Status::kInvalidElementSize);
+  TestInit(5, Status::kInvalidElementSize);
+  TestInit(9, Status::kInvalidElementSize);
+  TestInit(kUnknownElementSize, Status::kInvalidElementSize);
+}
+
+TEST_F(FloatParserTest, CustomDefault) {
+  const double sqrt2 = 1.4142135623730951454746218587388284504413604736328125;
+  ResetParser(sqrt2);
+
+  ParseAndVerify();
+
+  EXPECT_EQ(sqrt2, parser_.value());
+}
+
+TEST_F(FloatParserTest, ValidFloat) {
+  ParseAndVerify();
+  EXPECT_EQ(0, parser_.value());
+
+  SetReaderData({0x40, 0xC9, 0x0F, 0xDB});
+  ParseAndVerify();
+  EXPECT_EQ(6.283185482025146484375, parser_.value());
+
+  SetReaderData({0x40, 0x05, 0xBF, 0x0A, 0x8B, 0x14, 0x57, 0x69});
+  ParseAndVerify();
+  EXPECT_EQ(2.718281828459045090795598298427648842334747314453125,
+            parser_.value());
+}
+
+TEST_F(FloatParserTest, IncrementalParse) {
+  SetReaderData({0x3F, 0xF9, 0xE3, 0x77, 0x9B, 0x97, 0xF4, 0xA8});
+
+  IncrementalParseAndVerify();
+
+  EXPECT_EQ(1.6180339887498949025257388711906969547271728515625,
+            parser_.value());
+}
+
+}  // namespace