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content-provider.cpp
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content-provider.cpp
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#include <gtest/gtest.h>
#include <core/ContentProvider.hpp>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
using namespace Davix;
// file must be pathname ending with at least six trailing 'X'
bool makeTemporaryFile(char* file, const std::string &contents) {
int fd = mkstemp(file);
if (fd < 0) {
return false;
}
FILE *out = fdopen(fd, "w");
if (!out) {
return false;
}
bool ok = true;
if(::fwrite(contents.c_str(), sizeof(char), contents.size(), out) != contents.size()) {
ok = false;
}
if(fclose(out) != 0) {
ok = false;
}
return ok;
}
TEST(ContentProvider, Fd) {
char filename[1024] = "/tmp/davix-tests-tmp-file-XXXXXX";
ASSERT_TRUE(makeTemporaryFile(filename, "123456789"));
int fd = ::open(filename, O_RDONLY);
FdContentProvider provider(fd);
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getErrc(), 0);
ASSERT_TRUE(provider.getError().empty());
ASSERT_EQ(provider.getSize(), 9);
char buffer[1024];
// Read and rewind 3 times
for(size_t i = 0; i < 3; i++) {
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "123");
ASSERT_EQ(provider.pullBytes(buffer, 2), 2);
ASSERT_EQ(std::string(buffer, 2), "45");
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "678");
ASSERT_EQ(provider.pullBytes(buffer, 100), 1);
ASSERT_EQ(std::string(buffer, 1), "9");
ASSERT_EQ(provider.pullBytes(buffer, 100), 0);
ASSERT_EQ(provider.pullBytes(buffer, 100), 0);
ASSERT_EQ(provider.pullBytes(buffer, 100), 0);
ASSERT_TRUE(provider.rewind());
ASSERT_TRUE(provider.ok());
// Read everything in one go
ASSERT_EQ(provider.pullBytes(buffer, 100), 9);
ASSERT_EQ(std::string(buffer, 9), "123456789");
ASSERT_TRUE(provider.rewind());
ASSERT_TRUE(provider.ok());
}
// rewind multiple times
for(size_t i = 0; i < 10; i++) {
ASSERT_TRUE(provider.rewind());
ASSERT_TRUE(provider.ok());
}
// read 4 bytes
ASSERT_EQ(provider.pullBytes(buffer, 4), 4);
ASSERT_EQ(std::string(buffer, 4), "1234");
// .. but the fd closes..
ASSERT_EQ(close(fd), 0);
ASSERT_EQ(provider.pullBytes(buffer, 3), -EBADF);
ASSERT_EQ(provider.getErrc(), EBADF);
ASSERT_EQ(provider.getError(), "Bad file descriptor");
for(size_t i = 0; i < 10; i++) {
ASSERT_FALSE(provider.ok());
ASSERT_FALSE(provider.rewind());
ASSERT_EQ(provider.pullBytes(buffer, 3), -EBADF);
}
// remove test file
ASSERT_EQ(remove(filename),0);
}
TEST(ContentProvider, FdWithOffset) {
char filename[1024] = "/tmp/davix-tests-tmp-file-XXXXXX";
ASSERT_TRUE(makeTemporaryFile(filename, "123456789"));
int fd = ::open(filename, O_RDONLY);
FdContentProvider provider(fd, 2);
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 7);
char buffer[1024];
// Read and rewind 3 times
for(size_t i = 0; i < 3; i++) {
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "345");
ASSERT_TRUE(provider.rewind());
}
provider = FdContentProvider(fd, 30);
ASSERT_FALSE(provider.ok());
ASSERT_EQ(provider.getErrc(), ERANGE);
ASSERT_EQ(provider.getError(), "Invalid offset (30) given, fd contains only 9 bytes");
ASSERT_FALSE(provider.rewind());
// Test with offset near the limits of the fd
provider = FdContentProvider(fd, 8);
for(size_t i = 0; i < 3; i++) {
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 1);
ASSERT_EQ(provider.pullBytes(buffer, 3), 1);
ASSERT_EQ(std::string(buffer, 1), "9");
ASSERT_TRUE(provider.rewind());
}
provider = FdContentProvider(fd, 9);
ASSERT_FALSE(provider.ok());
ASSERT_EQ(provider.getErrc(), ERANGE);
ASSERT_EQ(provider.getError(), "Invalid offset (9) given, fd contains only 9 bytes");
ASSERT_EQ(::close(fd), 0);
ASSERT_EQ(remove(filename),0);
}
TEST(ContentProvider, FdWithMaxlen) {
char filename[1024] = "/tmp/davix-tests-tmp-file-XXXXXX";
ASSERT_TRUE(makeTemporaryFile(filename, "123456789"));
int fd = ::open(filename, O_RDONLY);
FdContentProvider provider(fd, 0, 5);
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 5);
char buffer[1024];
// Read and rewind 3 times
for(size_t i = 0; i < 3; i++) {
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "123");
ASSERT_EQ(provider.pullBytes(buffer, 2), 2);
ASSERT_EQ(std::string(buffer, 2), "45");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_TRUE(provider.rewind());
}
ASSERT_EQ(provider.pullBytes(buffer, 100), 5);
ASSERT_EQ(std::string(buffer, 5), "12345");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(::close(fd), 0);
ASSERT_EQ(remove(filename),0);
}
TEST(ContentProvider, FdWithOffsetAndMaxlen) {
char filename[1024] = "/tmp/davix-tests-tmp-file-XXXXXX";
ASSERT_TRUE(makeTemporaryFile(filename, "123456789"));
int fd = ::open(filename, O_RDONLY);
FdContentProvider provider(fd, 2, 5);
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 5);
char buffer[1024];
// Read and rewind 3 times
for(size_t i = 0; i < 3; i++) {
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "345");
ASSERT_EQ(provider.pullBytes(buffer, 2), 2);
ASSERT_EQ(std::string(buffer, 2), "67");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_TRUE(provider.rewind());
}
ASSERT_EQ(provider.pullBytes(buffer, 100), 5);
ASSERT_EQ(std::string(buffer, 5), "34567");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(::close(fd), 0);
ASSERT_EQ(remove(filename),0);
}
TEST(ContentProvider, FdExcessiveLen) {
char filename[1024] = "/tmp/davix-tests-tmp-file-XXXXXX";
ASSERT_TRUE(makeTemporaryFile(filename, "123456789"));
int fd = ::open(filename, O_RDONLY);
FdContentProvider provider(fd, 1, 10000);
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 8);
char buffer[1024];
// Read and rewind 3 times
for(size_t i = 0; i < 3; i++) {
ASSERT_EQ(provider.pullBytes(buffer, 100), 8);
ASSERT_EQ(std::string(buffer, 8), "23456789");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_TRUE(provider.rewind());
}
ASSERT_EQ(provider.pullBytes(buffer, 100), 8);
ASSERT_EQ(std::string(buffer, 8), "23456789");
ASSERT_EQ(provider.pullBytes(buffer, 1), 0);
ASSERT_EQ(::close(fd), 0);
ASSERT_EQ(remove(filename),0);
}
TEST(ContentProvider, Buffer) {
std::string sourceBuffer("123456789");
char buffer[1024];
BufferContentProvider provider(sourceBuffer.c_str(), sourceBuffer.size());
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 9);
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "123");
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "456");
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "789");
ASSERT_EQ(provider.pullBytes(buffer, 3), 0);
ASSERT_EQ(provider.pullBytes(buffer, 3), 0);
ASSERT_EQ(provider.pullBytes(buffer, 3), 0);
ASSERT_TRUE(provider.rewind());
ASSERT_EQ(provider.pullBytes(buffer, 200), 9);
ASSERT_EQ(std::string(buffer, 9), "123456789");
ASSERT_EQ(provider.pullBytes(buffer, 3), 0);
ASSERT_TRUE(provider.rewind());
ASSERT_EQ(provider.pullBytes(buffer, 4), 4);
ASSERT_EQ(std::string(buffer, 4), "1234");
ASSERT_EQ(provider.pullBytes(buffer, 100), 5);
ASSERT_EQ(std::string(buffer, 5), "56789");
ASSERT_EQ(provider.pullBytes(buffer, 100), 0);
}
TEST(ContentProvider, OwnedBuffer) {
OwnedBufferContentProvider provider("test");
char buffer[1024];
ASSERT_TRUE(provider.ok());
ASSERT_EQ(provider.getSize(), 4);
ASSERT_EQ(provider.pullBytes(buffer, 3), 3);
ASSERT_EQ(std::string(buffer, 3), "tes");
}