Update Crashpad to 8e37886d418dd042c3c7bfadac99214739ee4d98

third_party/crashpad/crashpad/util/file/delimited_file_reader_test.cc

+// Copyright 2017 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 "util/file/delimited_file_reader.h"
+
+#include <vector>
+
+#include "base/format_macros.h"
+#include "base/strings/stringprintf.h"
+#include "gtest/gtest.h"
+#include "util/file/string_file.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+TEST(DelimitedFileReader, EmptyFile) {
+  StringFile string_file;
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, EmptyOneLineFile) {
+  StringFile string_file;
+  string_file.SetString("\n");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ(string_file.string(), line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, SmallOneLineFile) {
+  StringFile string_file;
+  string_file.SetString("one line\n");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ(string_file.string(), line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, SmallOneLineFileWithoutNewline) {
+  StringFile string_file;
+  string_file.SetString("no newline");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ(string_file.string(), line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, SmallMultiLineFile) {
+  StringFile string_file;
+  string_file.SetString("first\nsecond line\n3rd\n");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("first\n", line);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("second line\n", line);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("3rd\n", line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, SmallMultiFieldFile) {
+  StringFile string_file;
+  string_file.SetString("first,second field\ntwo lines,3rd,");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string field;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim(',', &field));
+  EXPECT_EQ("first,", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim(',', &field));
+  EXPECT_EQ("second field\ntwo lines,", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim(',', &field));
+  EXPECT_EQ("3rd,", field);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetDelim(',', &field));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetDelim(',', &field));
+}
+
+TEST(DelimitedFileReader, SmallMultiFieldFile_MixedDelimiters) {
+  StringFile string_file;
+  string_file.SetString("first,second, still 2nd\t3rd\nalso\tnewline\n55555$");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string field;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim(',', &field));
+  EXPECT_EQ("first,", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('\t', &field));
+  EXPECT_EQ("second, still 2nd\t", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&field));
+  EXPECT_EQ("3rd\n", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('\n', &field));
+  EXPECT_EQ("also\tnewline\n", field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('$', &field));
+  EXPECT_EQ("55555$", field);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetDelim('?', &field));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&field));
+}
+
+TEST(DelimitedFileReader, EmptyLineMultiLineFile) {
+  StringFile string_file;
+  string_file.SetString("first\n\n\n4444\n");
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("first\n", line);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("\n", line);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("\n", line);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ("4444\n", line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, LongOneLineFile) {
+  std::string contents(50000, '!');
+  contents[1] = '?';
+  contents.push_back('\n');
+
+  StringFile string_file;
+  string_file.SetString(contents);
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ(contents, line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+void TestLongMultiLineFile(int base_length) {
+  std::vector<std::string> lines;
+  std::string contents;
+  for (size_t line_index = 0; line_index <= 'z' - 'a'; ++line_index) {
+    char c = 'a' + static_cast<char>(line_index);
+
+    // Mix up the lengths a little.
+    std::string line(base_length + line_index * ((line_index % 3) - 1), c);
+
+    // Mix up the data a little too.
+    ASSERT_LT(line_index, line.size());
+    line[line_index] -= ('a' - 'A');
+
+    line.push_back('\n');
+    contents.append(line);
+    lines.push_back(line);
+  }
+
+  StringFile string_file;
+  string_file.SetString(contents);
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  for (size_t line_index = 0; line_index < lines.size(); ++line_index) {
+    SCOPED_TRACE(base::StringPrintf("line_index %" PRIuS, line_index));
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(lines[line_index], line);
+  }
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, LongMultiLineFile) {
+  TestLongMultiLineFile(500);
+}
+
+TEST(DelimitedFileReader, ReallyLongMultiLineFile) {
+  TestLongMultiLineFile(5000);
+}
+
+TEST(DelimitedFileReader, EmbeddedNUL) {
+  const char kString[] = "embedded\0NUL\n";
+  StringFile string_file;
+  string_file.SetString(std::string(kString, arraysize(kString) - 1));
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string line;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetLine(&line));
+  EXPECT_EQ(string_file.string(), line);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetLine(&line));
+}
+
+TEST(DelimitedFileReader, NULDelimiter) {
+  const char kString[] = "aa\0b\0ccc\0";
+  StringFile string_file;
+  string_file.SetString(std::string(kString, arraysize(kString) - 1));
+  DelimitedFileReader delimited_file_reader(&string_file);
+
+  std::string field;
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('\0', &field));
+  EXPECT_EQ(std::string("aa\0", 3), field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('\0', &field));
+  EXPECT_EQ(std::string("b\0", 2), field);
+  ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+            delimited_file_reader.GetDelim('\0', &field));
+  EXPECT_EQ(std::string("ccc\0", 4), field);
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetDelim('\0', &field));
+
+  // The file is still at EOF.
+  EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+            delimited_file_reader.GetDelim('\0', &field));
+}
+
+TEST(DelimitedFileReader, EdgeCases) {
+  const size_t kSizes[] = {4094, 4095, 4096, 4097, 8190, 8191, 8192, 8193};
+  for (size_t index = 0; index < arraysize(kSizes); ++index) {
+    size_t size = kSizes[index];
+    SCOPED_TRACE(
+        base::StringPrintf("index %" PRIuS ", size %" PRIuS, index, size));
+
+    std::string line_0(size, '$');
+    line_0.push_back('\n');
+
+    StringFile string_file;
+    string_file.SetString(line_0);
+    DelimitedFileReader delimited_file_reader(&string_file);
+
+    std::string line;
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(line_0, line);
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+
+    // The file is still at EOF.
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+
+    std::string line_1(size, '@');
+    line_1.push_back('\n');
+
+    string_file.SetString(line_0 + line_1);
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(line_0, line);
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(line_1, line);
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+
+    // The file is still at EOF.
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+
+    line_1[size] = '?';
+
+    string_file.SetString(line_0 + line_1);
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(line_0, line);
+    ASSERT_EQ(DelimitedFileReader::Result::kSuccess,
+              delimited_file_reader.GetLine(&line));
+    EXPECT_EQ(line_1, line);
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+
+    // The file is still at EOF.
+    EXPECT_EQ(DelimitedFileReader::Result::kEndOfFile,
+              delimited_file_reader.GetLine(&line));
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad