Add some file operation tests.

We are not testing everything yet.

test/CMakeLists.txt

@@ -6,7 +6,7 @@ find_package(Threads REQUIRED)
 include_directories(../includes)
 link_libraries(miniffs)
 
-set(TESTS_SRC fs_opening.cpp)
+set(TESTS_SRC fs_opening.cpp file_operations.cpp)
 
 add_executable(miniffs_test)
 target_compile_definitions(miniffs_test PUBLIC BUILD_PLATFORM_${BUILD_PLATFORM})

test/file_operations.cpp

@@ -0,0 +1,201 @@
+/******************************************************************************
+ * MiniFFS : Mini Flat File System
+ * This file is part of the test suite of MiniFFS
+ *
+ * Copyright (c) 2008-2022 986-Studio. All rights reserved.
+ *
+ ******************************************************************************/
+
+#include <gtest/gtest.h>
+
+#include <miniffs.h>
+#include "get_fs.h"
+
+TEST(FileOperations, OpeningAFile)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    ASSERT_NE(fp, nullptr);
+}
+
+TEST(FileOperations, OpeningANonExistingFile)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+
+    file_t *fp = miniffs_open(fs, "FOO.BAR");
+
+    ASSERT_EQ(fp, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_FILE_NOT_FOUND);
+}
+
+TEST(FileOperations, UsingTheWrongNameCases)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+
+    file_t *fp = miniffs_open(fs, "hello.txt");
+
+    ASSERT_EQ(fp, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_FILE_NOT_FOUND);
+}
+
+TEST(FileOperations, TooLongFilename)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+
+    file_t *fp = miniffs_open(fs, "THISisNOTaVALIDname.txt");
+
+    ASSERT_EQ(fp, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_NAME);
+}
+
+TEST(FileOperations, TooLongExtension)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+
+    file_t *fp = miniffs_open(fs, "HELLO.thisIsNotValid");
+
+    ASSERT_EQ(fp, nullptr);
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_NAME);
+}
+
+TEST(FileOperations, ReadABytes)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    ASSERT_EQ(miniffs_read(fp), 'H');
+    ASSERT_EQ(miniffs_read(fp), 'e');
+}
+
+TEST(FileOperations, TestingSeek)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    ASSERT_EQ(miniffs_read(fp), 'H');
+    ASSERT_EQ(miniffs_read(fp), 'e');
+
+    miniffs_seek(fp, 0, MFFS_SEEK_SET);
+
+    ASSERT_EQ(miniffs_read(fp), 'H');
+    ASSERT_EQ(miniffs_read(fp), 'e');
+
+    miniffs_seek(fp, 5, MFFS_SEEK_SET);
+    ASSERT_EQ(miniffs_read(fp), ' ');
+    ASSERT_EQ(miniffs_read(fp), 'W');
+
+    miniffs_seek(fp, 1, MFFS_SEEK_CUR);
+    ASSERT_EQ(miniffs_read(fp), 'r');
+
+    miniffs_seek(fp, 0, MFFS_SEEK_END);
+    ASSERT_EQ(miniffs_read(fp), '!');
+
+    miniffs_seek(fp, 1, MFFS_SEEK_END);
+    ASSERT_EQ(miniffs_read(fp), 'd');
+    ASSERT_EQ(miniffs_read(fp), '!');
+}
+
+TEST(FileOperations, TestingEndOfFileBoundary)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+
+    miniffs_seek(fp, 1, MFFS_SEEK_END);
+    ASSERT_EQ(miniffs_read(fp), 'd');
+    ASSERT_EQ(miniffs_read(fp), '!');
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
+    ASSERT_EQ(miniffs_read(fp), '!');
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
+    ASSERT_EQ(miniffs_read(fp), '!');
+    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
+}
+
+
+TEST(FileOperations, ReadBlocks) {
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    char buffer[13];
+    int ret;
+
+    memset(buffer, 0, 13);
+    ret = miniffs_read_blocks(buffer, 4, 1, fp);
+    ASSERT_EQ(ret, 1);
+    ASSERT_EQ(buffer[0], 'H');
+    ASSERT_EQ(buffer[1], 'e');
+    ASSERT_EQ(buffer[2], 'l');
+    ASSERT_EQ(buffer[3], 'l');
+
+    memset(buffer, 0, 13);
+    ret = miniffs_read_blocks(buffer, 4, 1, fp);
+    ASSERT_EQ(ret, 1);
+    ASSERT_EQ(buffer[0], 'o');
+    ASSERT_EQ(buffer[1], ' ');
+    ASSERT_EQ(buffer[2], 'W');
+    ASSERT_EQ(buffer[3], 'o');
+}
+
+TEST(FileOperations, ReadMultiplesBlocks) {
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    char buffer[13];
+    int ret;
+    memset(buffer, 0, 13);
+    ret = miniffs_read_blocks(buffer, 4, 2, fp);
+    ASSERT_EQ(ret, 2);
+    ASSERT_EQ(buffer[0], 'H');
+    ASSERT_EQ(buffer[1], 'e');
+    ASSERT_EQ(buffer[2], 'l');
+    ASSERT_EQ(buffer[3], 'l');
+    ASSERT_EQ(buffer[4], 'o');
+    ASSERT_EQ(buffer[5], ' ');
+    ASSERT_EQ(buffer[6], 'W');
+    ASSERT_EQ(buffer[7], 'o');
+
+    memset(buffer, 0, 13);
+    miniffs_seek(fp, 0, MFFS_SEEK_SET);
+    ret = miniffs_read_blocks(buffer, 4, 3, fp);
+    ASSERT_EQ(ret, 3);
+    ASSERT_EQ(buffer[0], 'H');
+    ASSERT_EQ(buffer[1], 'e');
+    ASSERT_EQ(buffer[2], 'l');
+    ASSERT_EQ(buffer[3], 'l');
+    ASSERT_EQ(buffer[4], 'o');
+    ASSERT_EQ(buffer[5], ' ');
+    ASSERT_EQ(buffer[6], 'W');
+    ASSERT_EQ(buffer[7], 'o');
+    ASSERT_EQ(buffer[8], 'r');
+    ASSERT_EQ(buffer[9], 'l');
+    ASSERT_EQ(buffer[10], 'd');
+    ASSERT_EQ(buffer[11], '!');
+}
+
+TEST(FileOperations, ReadTooManyBlocks)
+{
+    miniffs_t *fs = get_fs("simple_test.mffs");
+    file_t *fp = miniffs_open(fs, "HELLO.TXT");
+
+    char buffer[13];
+    int ret;
+
+    memset(buffer, 0, 13);
+    ret = miniffs_read_blocks(buffer, 4, 4, fp);
+    ASSERT_EQ(ret, 3);
+    ASSERT_EQ(buffer[0], 'H');
+    ASSERT_EQ(buffer[1], 'e');
+    ASSERT_EQ(buffer[2], 'l');
+    ASSERT_EQ(buffer[3], 'l');
+    ASSERT_EQ(buffer[4], 'o');
+    ASSERT_EQ(buffer[5], ' ');
+    ASSERT_EQ(buffer[6], 'W');
+    ASSERT_EQ(buffer[7], 'o');
+    ASSERT_EQ(buffer[8], 'r');
+    ASSERT_EQ(buffer[9], 'l');
+    ASSERT_EQ(buffer[10], 'd');
+    ASSERT_EQ(buffer[11], '!');
+
+}