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/*
* Unit tests for class RewindInputStream.
*/
#include "config.h"
#include "input/plugins/RewindInputPlugin.hxx"
#include "input/InputStream.hxx"
#include "thread/Mutex.hxx"
#include "thread/Cond.hxx"
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/ui/text/TestRunner.h>
#include <cppunit/extensions/HelperMacros.h>
#include <string>
#include <string.h>
#include <stdlib.h>
class StringInputStream final : public InputStream {
const char *data;
size_t remaining;
public:
StringInputStream(const char *_uri,
Mutex &_mutex, Cond &_cond,
const char *_data)
:InputStream(_uri, _mutex, _cond),
data(_data), remaining(strlen(data)) {
SetReady();
}
/* virtual methods from InputStream */
bool IsEOF() override {
return remaining == 0;
}
size_t Read(void *ptr, size_t read_size) override {
size_t nbytes = std::min(remaining, read_size);
memcpy(ptr, data, nbytes);
data += nbytes;
remaining -= nbytes;
offset += nbytes;
return nbytes;
}
};
class RewindTest : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(RewindTest);
CPPUNIT_TEST(TestRewind);
CPPUNIT_TEST_SUITE_END();
public:
void TestRewind() {
Mutex mutex;
Cond cond;
StringInputStream *sis =
new StringInputStream("foo://", mutex, cond,
"foo bar");
CPPUNIT_ASSERT(sis->IsReady());
InputStream *ris = input_rewind_open(sis);
CPPUNIT_ASSERT(ris != sis);
CPPUNIT_ASSERT(ris != nullptr);
const ScopeLock protect(mutex);
ris->Update();
CPPUNIT_ASSERT(ris->IsReady());
CPPUNIT_ASSERT(!ris->KnownSize());
CPPUNIT_ASSERT_EQUAL(offset_type(0), ris->GetOffset());
char buffer[16];
size_t nbytes = ris->Read(buffer, 2);
CPPUNIT_ASSERT_EQUAL(size_t(2), nbytes);
CPPUNIT_ASSERT_EQUAL('f', buffer[0]);
CPPUNIT_ASSERT_EQUAL('o', buffer[1]);
CPPUNIT_ASSERT_EQUAL(offset_type(2), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, 2);
CPPUNIT_ASSERT_EQUAL(size_t(2), nbytes);
CPPUNIT_ASSERT_EQUAL('o', buffer[0]);
CPPUNIT_ASSERT_EQUAL(' ', buffer[1]);
CPPUNIT_ASSERT_EQUAL(offset_type(4), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
ris->Seek(1);
CPPUNIT_ASSERT_EQUAL(offset_type(1), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, 2);
CPPUNIT_ASSERT_EQUAL(size_t(2), nbytes);
CPPUNIT_ASSERT_EQUAL('o', buffer[0]);
CPPUNIT_ASSERT_EQUAL('o', buffer[1]);
CPPUNIT_ASSERT_EQUAL(offset_type(3), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
ris->Seek(0);
CPPUNIT_ASSERT_EQUAL(offset_type(0), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, 2);
CPPUNIT_ASSERT_EQUAL(size_t(2), nbytes);
CPPUNIT_ASSERT_EQUAL('f', buffer[0]);
CPPUNIT_ASSERT_EQUAL('o', buffer[1]);
CPPUNIT_ASSERT_EQUAL(offset_type(2), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, sizeof(buffer));
CPPUNIT_ASSERT_EQUAL(size_t(2), nbytes);
CPPUNIT_ASSERT_EQUAL('o', buffer[0]);
CPPUNIT_ASSERT_EQUAL(' ', buffer[1]);
CPPUNIT_ASSERT_EQUAL(offset_type(4), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, sizeof(buffer));
CPPUNIT_ASSERT_EQUAL(size_t(3), nbytes);
CPPUNIT_ASSERT_EQUAL('b', buffer[0]);
CPPUNIT_ASSERT_EQUAL('a', buffer[1]);
CPPUNIT_ASSERT_EQUAL('r', buffer[2]);
CPPUNIT_ASSERT_EQUAL(offset_type(7), ris->GetOffset());
CPPUNIT_ASSERT(ris->IsEOF());
ris->Seek(3);
CPPUNIT_ASSERT_EQUAL(offset_type(3), ris->GetOffset());
CPPUNIT_ASSERT(!ris->IsEOF());
nbytes = ris->Read(buffer, sizeof(buffer));
CPPUNIT_ASSERT_EQUAL(size_t(4), nbytes);
CPPUNIT_ASSERT_EQUAL(' ', buffer[0]);
CPPUNIT_ASSERT_EQUAL('b', buffer[1]);
CPPUNIT_ASSERT_EQUAL('a', buffer[2]);
CPPUNIT_ASSERT_EQUAL('r', buffer[3]);
CPPUNIT_ASSERT_EQUAL(offset_type(7), ris->GetOffset());
CPPUNIT_ASSERT(ris->IsEOF());
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(RewindTest);
int
main(gcc_unused int argc, gcc_unused char **argv)
{
CppUnit::TextUi::TestRunner runner;
auto ®istry = CppUnit::TestFactoryRegistry::getRegistry();
runner.addTest(registry.makeTest());
return runner.run() ? EXIT_SUCCESS : EXIT_FAILURE;
}
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