tesseract/unittest/fileio_test.cc
2021-03-22 09:03:51 +01:00

68 lines
1.9 KiB
C++

// (C) Copyright 2017, Google Inc.
// 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 <stdio.h>
#include <memory>
#include "absl/strings/str_split.h"
#include "fileio.h"
#include "include_gunit.h"
namespace tesseract {
TEST(FileTest, JoinPath) {
EXPECT_EQ("/abc/def", File::JoinPath("/abc", "def"));
EXPECT_EQ("/abc/def", File::JoinPath("/abc/", "def"));
EXPECT_EQ("def", File::JoinPath("", "def"));
}
TEST(OutputBufferTest, WriteString) {
const int kMaxBufSize = 128;
char buffer[kMaxBufSize];
for (char &i : buffer) {
i = '\0';
}
FILE *fp = tmpfile();
CHECK(fp != nullptr);
auto output = std::make_unique<OutputBuffer>(fp);
output->WriteString("Hello ");
output->WriteString("world!");
rewind(fp);
auto s = "Hello world!";
fread(buffer, strlen(s), 1, fp);
EXPECT_STREQ(s, buffer);
}
TEST(InputBufferTest, Read) {
const int kMaxBufSize = 128;
char buffer[kMaxBufSize];
auto s = "Hello\n world!";
strncpy(buffer, s, kMaxBufSize);
EXPECT_STREQ(s, buffer);
FILE *fp = tmpfile();
CHECK(fp != nullptr);
fwrite(buffer, strlen(s), 1, fp);
rewind(fp);
std::string str;
auto input = std::make_unique<InputBuffer>(fp);
EXPECT_TRUE(input->Read(&str));
std::vector<std::string> lines = absl::StrSplit(str, '\n', absl::SkipEmpty());
EXPECT_EQ(2, lines.size());
EXPECT_EQ("Hello", lines[0]);
EXPECT_EQ(" world!", lines[1]);
}
} // namespace tesseract