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Test retry on EINTR in read, write, dup & dup2.

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This commit is contained in:
Victor Zverovich 2014-05-16 07:07:43 -07:00
parent 232e5c3a3b
commit f1eab158c5
1 changed files with 53 additions and 2 deletions
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55
test/posix-test.cc
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@ -107,16 +107,24 @@ test::ssize_t test::write(int fildes, const void *buf, test::size_t nbyte) {
statement; \
EXPECT_EQ(4, func##_count); \
func##_count = 0;
# define EXPECT_EQ_POSIX(expected, actual)
#else
# define EXPECT_RETRY(statement, func, message) \
func##_count = 1; \
EXPECT_SYSTEM_ERROR(statement, EINTR, message); \
func##_count = 0;
# define EXPECT_EQ_POSIX(expected, actual) EXPECT_EQ(expected, actual)
#endif
TEST(FileTest, OpenRetry) {
EXPECT_RETRY(File file("CMakeLists.txt", File::RDONLY),
File *f = 0;
EXPECT_RETRY(f = new File("CMakeLists.txt", File::RDONLY),
open, "cannot open file CMakeLists.txt");
#ifndef _WIN32
char c = 0;
f->read(&c, 1);
#endif
delete f;
}
TEST(FileTest, CloseNoRetryInDtor) {
@ -142,5 +150,48 @@ TEST(FileTest, CloseNoRetry) {
close_count = 0;
}
// TODO: test retry on EINTR
TEST(FileTest, ReadRetry) {
File read_end, write_end;
File::pipe(read_end, write_end);
enum { SIZE = 4 };
write_end.write("test", SIZE);
write_end.close();
char buffer[SIZE];
std::streamsize count = 0;
EXPECT_RETRY(count = read_end.read(buffer, SIZE),
read, "cannot read from file");
EXPECT_EQ_POSIX(SIZE, count);
}
TEST(FileTest, WriteRetry) {
File read_end, write_end;
File::pipe(read_end, write_end);
enum { SIZE = 4 };
std::streamsize count = 0;
EXPECT_RETRY(count = write_end.write("test", SIZE),
write, "cannot write to file");
write_end.close();
#ifndef _WIN32
EXPECT_EQ(SIZE, count);
char buffer[SIZE + 1];
read_end.read(buffer, SIZE);
buffer[SIZE] = '\0';
EXPECT_STREQ("test", buffer);
#endif
}
TEST(FileTest, DupRetry) {
int stdout_fd = fileno(stdout);
EXPECT_RETRY(File::dup(stdout_fd), dup,
str(fmt::Format("cannot duplicate file descriptor {}") << stdout_fd));
}
TEST(FileTest, Dup2Retry) {
File f1 = File::dup(fileno(stdout)), f2 = File::dup(fileno(stdout));
EXPECT_RETRY(f1.dup2(f2.descriptor()), dup2,
str(fmt::Format("cannot duplicate file descriptor {} to {}")
<< f1.descriptor() << f2.descriptor()));
}
// TODO: test retry on EINTR in dup2, pipe, fdopen
// TODO: test ConvertRWCount