--- /dev/null
+/*
+ * This file is part of the GROMACS molecular simulation package.
+ *
+ * Copyright (c) 2019, by the GROMACS development team, led by
+ * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
+ * and including many others, as listed in the AUTHORS file in the
+ * top-level source directory and at http://www.gromacs.org.
+ *
+ * GROMACS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * GROMACS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GROMACS; if not, see
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+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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+ *
+ * To help us fund GROMACS development, we humbly ask that you cite
+ * the research papers on the package. Check out http://www.gromacs.org.
+ */
+/*! \internal \file
+ * \brief
+ * Tests for gmx::FileIOXdrSerializer.
+ *
+ * \author Mark Abraham <mark.j.abraham@gmail.com>
+ * \ingroup module_fileio
+ */
+
+#include "gmxpre.h"
+
+#include <gtest/gtest.h>
+
+#include "gromacs/fileio/gmxfio.h"
+#include "gromacs/fileio/gmxfio_xdr.h"
+#include "gromacs/utility/futil.h"
+
+#include "testutils/testfilemanager.h"
+
+namespace gmx
+{
+namespace test
+{
+namespace
+{
+union IntAndFloat32 {
+ std::int32_t int32Value_;
+ float floatValue_;
+};
+
+union IntAndFloat64 {
+ std::int64_t int64Value_;
+ double doubleValue_;
+};
+
+//! Constants used for testing endian swap operations
+//! \{
+constexpr std::int16_t c_int16Value = static_cast<std::int16_t>(0x7A2B);
+constexpr std::int32_t c_int32Value = static_cast<std::int32_t>(0x78ABCDEF);
+constexpr std::int64_t c_int64Value = static_cast<std::int64_t>(0x78ABCDEF12345678);
+
+constexpr const IntAndFloat32 c_intAndFloat32{ c_int32Value };
+constexpr const IntAndFloat64 c_intAndFloat64{ c_int64Value };
+//! \}
+
+//! Return the integer used for testing, depending on the size of int.
+constexpr int integerSizeDependentTestingValue()
+{
+ return sizeof(int) == 4 ? c_int32Value : sizeof(int) == 8 ? c_int64Value : c_int16Value;
+}
+
+class FileIOXdrSerializerTest : public ::testing::Test
+{
+public:
+ ~FileIOXdrSerializerTest() override
+ {
+ if (file_)
+ {
+ gmx_fio_close(file_);
+ }
+ }
+ struct SerializerValues
+ {
+ bool boolValue_ = true;
+ unsigned char unsignedCharValue_ = 0x78;
+ char charValue_ = 0x78;
+ unsigned short unsignedShortValue_ = static_cast<unsigned short>(c_int16Value);
+ std::int32_t int32Value_ = c_int32Value;
+ float floatValue_ = c_intAndFloat32.floatValue_;
+ std::int64_t int64Value_ = c_int64Value;
+ double doubleValue_ = c_intAndFloat64.doubleValue_;
+ int intValue_ = integerSizeDependentTestingValue();
+ real realValue_ = std::is_same<real, double>::value
+ ? static_cast<real>(c_intAndFloat64.doubleValue_)
+ : static_cast<real>(c_intAndFloat32.floatValue_);
+ } defaultValues_;
+
+ TestFileManager fileManager_;
+ // Make sure the file extension is one that gmx_fio_open will
+ // recognize to open as binary, even though we're just abusing it
+ // to write arbitrary XDR output.
+ std::string filename_ = fileManager_.getTemporaryFilePath("data.edr");
+ t_fileio* file_ = nullptr;
+};
+
+TEST_F(FileIOXdrSerializerTest, SizeIsCorrect)
+{
+ file_ = gmx_fio_open(filename_.c_str(), "w");
+ FileIOXdrSerializer serializer(file_);
+ // These types all have well-defined widths in bytes AFTER XDR serialization,
+ // which we can test below.
+ serializer.doBool(&defaultValues_.boolValue_); // 4 bytes
+ serializer.doChar(&defaultValues_.charValue_); // 4 bytes
+ serializer.doInt32(&defaultValues_.int32Value_); // 4 bytes
+ serializer.doInt64(&defaultValues_.int64Value_); // 8 bytes
+ serializer.doFloat(&defaultValues_.floatValue_); // 4 bytes
+ serializer.doDouble(&defaultValues_.doubleValue_); // 8 bytes
+ std::vector<char> charBuffer = { 'a', 'b', 'c' };
+ serializer.doCharArray(charBuffer.data(), charBuffer.size()); // 12 bytes
+ serializer.doOpaque(charBuffer.data(), charBuffer.size()); // 4 bytes
+ std::vector<int32_t> int32Buffer = { 0x1BCDEF78, 0x654321FE };
+ serializer.doInt32Array(int32Buffer.data(), int32Buffer.size()); // 8 bytes
+ std::vector<int64_t> int64Buffer = { 0x1BCDEF78654321FE, 0x3726ABFEAB34716C };
+ serializer.doInt64Array(int64Buffer.data(), int64Buffer.size()); // 16 bytes
+ gmx_fio_close(file_);
+
+ file_ = gmx_fio_open(filename_.c_str(), "r");
+
+ // Determine file size
+ gmx_fseek(gmx_fio_getfp(file_), 0, SEEK_END);
+ gmx_off_t fileSize = gmx_fio_ftell(file_);
+ EXPECT_EQ(fileSize, 72);
+}
+
+} // namespace
+} // namespace test
+} // namespace gmx
checkSerializerValuesforEquality(endianessSwappedValues_, deserialisedValues);
}
+TEST_F(InMemorySerializerTest, SizeIsCorrect)
+{
+ InMemorySerializer serializer;
+ // These types all have well-defined widths in bytes,
+ // which we can test below.
+ serializer.doBool(&defaultValues_.boolValue_); // 1 bytes
+ serializer.doChar(&defaultValues_.charValue_); // 1 bytes
+ serializer.doInt32(&defaultValues_.int32Value_); // 4 bytes
+ serializer.doInt64(&defaultValues_.int64Value_); // 8 bytes
+ serializer.doFloat(&defaultValues_.floatValue_); // 4 bytes
+ serializer.doDouble(&defaultValues_.doubleValue_); // 8 bytes
+ std::vector<char> charBuffer = { 'a', 'b', 'c' };
+ serializer.doCharArray(charBuffer.data(), charBuffer.size()); // 3 bytes
+ serializer.doOpaque(charBuffer.data(), charBuffer.size()); // 3 bytes
+ std::vector<int32_t> int32Buffer = { 0x1BCDEF78, 0x654321FE };
+ serializer.doInt32Array(int32Buffer.data(), int32Buffer.size()); // 8 bytes
+ std::vector<int64_t> int64Buffer = { 0x1BCDEF78654321FE, 0x3726ABFEAB34716C };
+ serializer.doInt64Array(int64Buffer.data(), int64Buffer.size()); // 16 bytes
+ auto buffer = serializer.finishAndGetBuffer();
+ EXPECT_EQ(buffer.size(), 56);
+}
+
} // namespace
} // namespace test
} // namespace gmx
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