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/*
* (C) Copyright 1996- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation nor
* does it submit to any jurisdiction.
*/
#include <cstring>
#include "eckit/config/Resource.h"
#include "eckit/filesystem/PathName.h"
#include "eckit/io/Buffer.h"
#include "eckit/io/FileHandle.h"
#include "eckit/io/MemoryHandle.h"
#include "eckit/io/MultiHandle.h"
#include "eckit/io/PartFileHandle.h"
#include "eckit/log/Log.h"
#include "eckit/memory/Zero.h"
#include "eckit/runtime/Tool.h"
#include "eckit/testing/Test.h"
#include "eckit/types/Types.h"
using namespace std;
using namespace eckit;
using namespace eckit::testing;
namespace eckit::test {
//----------------------------------------------------------------------------------------------------------------------
const char buf1[] = "abcdefghijklmnopqrstuvwxyz01234";
class Tester {
public:
Tester() {
format(std::cout, Log::fullFormat);
std::string base = Resource<std::string>("$TMPDIR", "/tmp");
path1_ = PathName::unique(base + "/path1");
path1_ += ".dat";
{
FileHandle f1(path1_);
f1.openForWrite(0);
f1.write(buf1, sizeof(buf1) - 1);
f1.close();
std::cout << "created: " << path1_ << std::endl;
}
}
~Tester() {
bool verbose = false;
path1_.unlink(verbose);
}
static Buffer makeBuffer() {
Buffer buffer(64);
buffer.zero();
return buffer;
}
PathName path1_;
};
//----------------------------------------------------------------------------------------------------------------------
CASE("PartFileHandle with no parts (empty)") {
Tester test;
OffsetList ol0 = {};
LengthList ll0 = {};
PartFileHandle ph(test.path1_, ol0, ll0);
ph.openForRead();
SECTION("Read @ start") {
EXPECT_NO_THROW(ph.seek(0));
{
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 10);
EXPECT(r == 0);
}
EXPECT(ph.position() == Offset(0));
EXPECT_NO_THROW(ph.skip(0));
}
SECTION("Seek beyond EOF throws, but we can still read without error") {
EXPECT_THROWS_AS(ph.seek(1), AssertionFailed);
EXPECT_NO_THROW(ph.seek(0));
{
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 10);
EXPECT(r == 0);
}
EXPECT(ph.position() == Offset(0));
EXPECT_NO_THROW(ph.skip(0));
}
ph.close();
}
CASE("PartFileHandle with multiple parts") {
Tester test;
OffsetList ol1 = {0, 2, 6, 13, 23};
LengthList ll1 = {1, 2, 4, 6, 8};
PartFileHandle ph(test.path1_, ol1, ll1);
// 0 1 2 3
// 0123456789012345678901234567890
// abcdefghijklmnopqrstuvwxyz01234
// = == ==== ====== ========
// a cd ghij nopqrs xyz01234
// size = 21
ph.openForRead();
SECTION("Seek to EOF") {
EXPECT(ph.size() == Length(21));
EXPECT_NO_THROW(ph.seek(21));
{
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 10);
EXPECT(r == 0);
}
EXPECT_NO_THROW(ph.seek(10));
EXPECT(ph.position() == Offset(10));
{
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 13);
EXPECT(r == 11);
std::cout << std::string(buff) << std::endl;
EXPECT(std::string(buff) == "qrsxyz01234");
}
EXPECT(ph.position() == Offset(21));
EXPECT_NO_THROW(ph.skip(-2));
EXPECT(ph.position() == Offset(19));
// skipping past the EOF asserts, and leaves position @ EOF
{
EXPECT_THROWS_AS(ph.skip(9), AssertionFailed);
Offset position = ph.position();
EXPECT_EQUAL(position, Offset(21));
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 10);
EXPECT(r == 0);
}
// complete read
{
EXPECT_NO_THROW(ph.rewind());
EXPECT(ph.position() == Offset(0));
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 40);
EXPECT(r == 21);
std::string read(buff);
std::cout << read << std::endl;
EXPECT_EQUAL(read, "acdghijnopqrsxyz01234");
}
// partial read in the middle and overlapping parts
{
EXPECT_NO_THROW(ph.seek(5));
EXPECT(ph.position() == Offset(5));
Buffer buff = Tester::makeBuffer();
long r = ph.read(buff, 12);
EXPECT(r == 12);
std::string read(buff);
std::cout << read << std::endl;
EXPECT_EQUAL(read, "ijnopqrsxyz0");
}
}
ph.close();
}
//----------------------------------------------------------------------------------------------------------------------
} // namespace eckit::test
int main(int argc, char** argv) {
return run_tests(argc, argv);
}
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