TESTS: Add unit tests for ReadFile

tests/common/readfile.cpp

@@ -0,0 +1,69 @@
+/* xoreos - A reimplementation of BioWare's Aurora engine
+ *
+ * xoreos is the legal property of its developers, whose names
+ * can be found in the AUTHORS file distributed with this source
+ * distribution.
+ *
+ * xoreos is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * xoreos 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file
+ *  Unit tests for our file read stream.
+ */
+
+#include <cstdio>
+
+#include "gtest/gtest.h"
+
+#include "src/common/util.h"
+#include "src/common/readfile.h"
+
+static const char *kFilename = "tests/common/testfile_readfile.file";
+
+GTEST_TEST(ReadFile, write) {
+	static const byte data[5] = { 0x12, 0x34, 0x56, 0x78, 0x90 };
+
+	// Create the input file
+
+	FILE *testFile = std::fopen(kFilename, "wb");
+	ASSERT_NE(testFile, static_cast<FILE *>(0));
+
+	const size_t writeCount = std::fwrite(data, 1, ARRAYSIZE(data), testFile);
+	EXPECT_EQ(writeCount, ARRAYSIZE(data));
+
+	const int flushSuccess = std::fflush(testFile);
+	ASSERT_EQ(flushSuccess, 0);
+
+	std::fclose(testFile);
+	testFile = 0;
+
+	// Read the file with our ReadFile class
+
+	Common::ReadFile file(kFilename);
+	ASSERT_TRUE(file.isOpen());
+
+	EXPECT_EQ(file.size(), ARRAYSIZE(data));
+
+	byte readData[ARRAYSIZE(data)];
+	const size_t readCount = file.read(readData, sizeof(readData));
+	EXPECT_EQ(readCount, ARRAYSIZE(readData));
+
+	file.close();
+	ASSERT_FALSE(file.isOpen());
+
+	// Compare
+
+	for (size_t i = 0; i < ARRAYSIZE(data); i++)
+		EXPECT_EQ(readData[i], data[i]) << "At index " << i;
+}

tests/common/rules.mk

@@ -84,3 +84,9 @@ check_PROGRAMS                           += tests/common/test_memwritestream
 tests_common_test_memwritestream_SOURCES  = tests/common/memwritestream.cpp
 tests_common_test_memwritestream_LDADD    = $(common_LIBS)
 tests_common_test_memwritestream_CXXFLAGS = $(test_CXXFLAGS)
+
+check_PROGRAMS                     += tests/common/test_readfile
+tests_common_test_readfile_SOURCES  = tests/common/readfile.cpp
+tests_common_test_readfile_LDADD    = $(common_LIBS)
+tests_common_test_readfile_CXXFLAGS = $(test_CXXFLAGS)
+CLEANFILES                         += tests/common/testfile_readfile.file