Add first batch of tests

and fix some issues.

test/CMakeLists.txt

@@ -9,11 +9,22 @@ link_libraries(miniffs)
 set(TESTS_SRC fs_opening.cpp)
 
 add_executable(miniffs_test)
+target_compile_definitions(miniffs_test PUBLIC BUILD_PLATFORM_${BUILD_PLATFORM})
 target_include_directories(miniffs_test PUBLIC ${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})
 target_sources(miniffs_test PRIVATE ${TESTS_SRC})
-target_link_libraries(miniffs_test gtest gtest_main Threads::Threads)
+target_link_libraries(miniffs_test gtest gtest_main Threads::Threads miniffs)
+
+file(GLOB TEST_FSIMG *.mffs)
+
+add_custom_command(
+        TARGET miniffs_test POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy
+        ${TEST_FSIMG}
+        ${CMAKE_CURRENT_BINARY_DIR}/
+)
 
 gtest_discover_tests(miniffs_test
         WORKING_DIRECTORY ${PROJECT_DIR}
         PROPERTIES VS_DEBUGGER_WORKING_DIRECTORY "${PROJECT_DIR}"
 )
+

test/fs_opening.cpp

@@ -4,4 +4,50 @@
  *
  * Copyright (c) 2008-2022 986-Studio. All rights reserved.
  *
- ******************************************************************************/
+ ******************************************************************************/
+
+#include <gtest/gtest.h>
+
+#include <miniffs.h>
+#include "get_fs.h"
+
+TEST(FSOpening, OpeningAFileSystem)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    ASSERT_NE(fs, nullptr);
+}
+
+TEST(FSOpening, OpeningANonExistingFile)
+{
+    miniffs_t *fs = get_fs("i_do_not_exists.mffs");
+    ASSERT_EQ(fs, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_FS);
+}
+
+TEST(FSOpening, OpeningFsWithWrongMagic)
+{
+    miniffs_t *fs = get_fs("wrong_magic.mffs");
+    ASSERT_EQ(fs, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_FS);
+}
+
+TEST(FSOpening, OpeningFsWithWrongVersion)
+{
+    miniffs_t *fs = get_fs("wrong_version.mffs");
+    ASSERT_EQ(fs, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_FS);
+}
+
+TEST(FSOpening, OpeningFsWithWrongNameLen)
+{
+    miniffs_t *fs = get_fs("wrong_namelen.mffs");
+    ASSERT_EQ(fs, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_FS);
+}
+
+TEST(FSOpening, OpeningFsWithWrongExtLen)
+{
+    miniffs_t *fs = get_fs("wrong_extlen.mffs");
+    ASSERT_EQ(fs, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_FS);
+}

test/get_fs.h

@@ -0,0 +1,47 @@
+/******************************************************************************
+ * MiniFFS : Mini Flat File System
+ * This file is part of the test suite of MiniFFS
+ *
+ * This file abstract the filesystem opening, to be able to test both FILE and
+ * MEMORY backend.
+ *
+ * Copyright (c) 2008-2022 986-Studio. All rights reserved.
+ *
+ ******************************************************************************/
+
+static miniffs_t *get_fs(const char *filename)
+{
+#ifdef BUILD_PLATFORM_MEMORY
+    char *fs_image;
+    size_t fileSize;
+#ifdef _WIN32
+    /* As windows do not provide an easy to use mmap equivalent, let's use the fallback
+     * of opening the file, allocating memory and read the file in the said memory
+     */
+    FILE *fp;
+    fp = fopen(filename, "rb");
+    fseek(fp, 0, SEEK_END);
+    fileSize = ftell(fp);
+    fseek(fp, 0, SEEK_SET);
+    fs_image = (char *)calloc(1, fileSize);
+    fread(fs_image, 1, fileSize, fp);
+    fclose(fp);
+#else
+    int fd;
+    struct stat FileStat;
+
+    fd = open(filename, O_RDWR);
+    fstat(fd, &FileStat);
+    fs_image = (char *)mmap(NULL, FileStat.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    close(fd);
+    fileSize = FileStat.st_size
+    if (fs_image == MAP_FAILED)
+    {
+        fs_image = NULL;
+    }
+#endif
+    return miniffs_openfs((uintptr_t)fs_image);
+#else
+    return miniffs_openfs(filename);
+#endif
+}