feat(tests): added assert function for tests

CMakeLists.txt

@@ -14,7 +14,8 @@ else()
     target_compile_options(cosms-core PRIVATE -Wall -Wextra -pedantic)
 endif()
 
-add_executable(cosms-core-test ${PROJECT_SOURCE_DIR}/tests/main.c)
+file(GLOB_RECURSE SRC_TEST_FILES "${PROJECT_SOURCE_DIR}/tests/*.c")
+add_executable(cosms-core-test ${SRC_TEST_FILES})
 
 target_include_directories(cosms-core-test PRIVATE ${PROJECT_SOURCE_DIR}/tests)
 target_link_libraries(cosms-core-test cosms-core)

include/cosms-core/file.h

@@ -12,20 +12,20 @@
 #include <stdbool.h>
 
 typedef enum {
-    COSMS_FILE_OK = 0,
-    COSMS_FILE_NOT_FOUND = -1,
-    COSMS_FILE_NO_ACCESS = -2,
-    COSMS_FILE_LIMIT_REACHED = -3,
-    COSMS_FILE_COULD_NOT_READ_SIZE = -4,
-    COSMS_FILE_UNKOWN_ERROR = -5,
-    COSMS_FILE_FAILED_TO_ALLOCATE = -6,
-    COSMS_FILE_FAILED_TO_READ = -7,
-    COSMS_FILE_FAILED_TO_WRITE = -8,
-} CosmsFileError;
+    COSMS_CORE_FILE_OK = 0,
+    COSMS_CORE_FILE_NOT_FOUND = -1,
+    COSMS_CORE_FILE_NO_ACCESS = -2,
+    COSMS_CORE_FILE_LIMIT_REACHED = -3,
+    COSMS_CORE_FILE_COULD_NOT_READ_SIZE = -4,
+    COSMS_CORE_FILE_UNKOWN_ERROR = -5,
+    COSMS_CORE_FILE_FAILED_TO_ALLOCATE = -6,
+    COSMS_CORE_FILE_FAILED_TO_READ = -7,
+    COSMS_CORE_FILE_FAILED_TO_WRITE = -8,
+} CosmsCoreFileError;
 
-CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size);
-CosmsFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override);
+CosmsCoreFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size);
+CosmsCoreFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override);
 
-const char *cosms_core_file_error_string(CosmsFileError error);
+const char *cosms_core_file_error_string(CosmsCoreFileError error);
 
 #endif

src/file.c

@@ -20,37 +20,40 @@
 #include <windows.h>
 #endif
 
-CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size) {
+CosmsCoreFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size) {
     #if defined(__GNUC__)
     int file = open(path, O_RDONLY);
     if (file == -1) {
         switch(errno) {
             case ENOENT: 
-                return COSMS_FILE_NOT_FOUND;
+                return COSMS_CORE_FILE_NOT_FOUND;
 
             case EACCES:
-                return COSMS_FILE_NO_ACCESS;
+                return COSMS_CORE_FILE_NO_ACCESS;
 
             case EMFILE:
             case ENFILE:
-                return COSMS_FILE_LIMIT_REACHED;
+                return COSMS_CORE_FILE_LIMIT_REACHED;
 
             default:
-                return COSMS_FILE_UNKOWN_ERROR;
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
         }
     }
     
     struct stat file_stat;
     if (stat(path, &file_stat) != 0) {
         close(file);
-        return COSMS_FILE_COULD_NOT_READ_SIZE;
+        return COSMS_CORE_FILE_COULD_NOT_READ_SIZE;
     }
 
+    if (size != NULL) {
         *size = file_stat.st_size;
+    }
+
     *content = (char*)malloc((file_stat.st_size + 1) * sizeof(char));
     if (content == NULL) {
         close(file);
-        return COSMS_FILE_FAILED_TO_ALLOCATE;
+        return COSMS_CORE_FILE_FAILED_TO_ALLOCATE;
     }
     
     unsigned long long remaining_bytes = file_stat.st_size;
@@ -66,7 +69,7 @@ CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned l
         if (read_bytes == -1) {
             free(*content);
             close(file);
-            return COSMS_FILE_FAILED_TO_READ;
+            return COSMS_CORE_FILE_FAILED_TO_READ;
         }
 
         remaining_bytes -= read_bytes;
@@ -80,18 +83,18 @@ CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned l
         switch(GetLastError()) {
             case ERROR_FILE_NOT_FOUND:
             case ERROR_PATH_NOT_FOUND:
-                return COSMS_FILE_NOT_FOUND;
+                return COSMS_CORE_FILE_NOT_FOUND;
 
             case ERROR_ACCESS_DENIED:
             case ERROR_SHARING_VIOLATION:
             case ERROR_LOCK_VIOLATION:
-                return COSMS_FILE_NO_ACCESS;
+                return COSMS_CORE_FILE_NO_ACCESS;
 
             case ERROR_TOO_MANY_OPEN_FILES:
-                return COSMS_FILE_LIMIT_REACHED;
+                return COSMS_CORE_FILE_LIMIT_REACHED;
 
             default:
-                return COSMS_FILE_UNKOWN_ERROR;
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
         }
     }
 
@@ -99,16 +102,19 @@ CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned l
     DWORD low_size = GetFileSize(file, &high_size);
     if (low_size == INVALID_FILE_SIZE && GetLastError() != NO_ERROR) {
         CloseHandle(file);
-        return COSMS_FILE_COULD_NOT_READ_SIZE;
+        return COSMS_CORE_FILE_COULD_NOT_READ_SIZE;
     }
 
     unsigned long long file_size = ((unsigned long long)high_size << 32) | low_size;
 
+    if (size != NULL) {
         *size = file_size;
+    }
+
     *content = (char*)malloc((file_size + 1) * sizeof(char));
     if (content == NULL) {
         CloseHandle(file);
-        return COSMS_FILE_FAILED_TO_ALLOCATE;
+        return COSMS_CORE_FILE_FAILED_TO_ALLOCATE;
     }
 
     unsigned long long remaining_bytes = file_size;
@@ -123,7 +129,7 @@ CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned l
         if (!ReadFile(file, (*content) + (file_size - remaining_bytes), bytes_to_read, &read_bytes, NULL)) {
             free(*content);
             CloseHandle(file);
-            return COSMS_FILE_FAILED_TO_READ;
+            return COSMS_CORE_FILE_FAILED_TO_READ;
         }
 
         remaining_bytes -= read_bytes;
@@ -133,10 +139,10 @@ CosmsFileError cosms_core_file_read(const char *path, char **content, unsigned l
     CloseHandle(file);
     #endif
 
-    return COSMS_FILE_OK;
+    return COSMS_CORE_FILE_OK;
 }
 
-CosmsFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override) {
+CosmsCoreFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override) {
     #if defined(__GNUC__)
     int file;
     if (override) {
@@ -148,17 +154,17 @@ CosmsFileError cosms_core_file_write(const char *path, const char *content, unsi
     if (file == -1) {
         switch (errno) {
             case ENOENT:
-                return COSMS_FILE_NOT_FOUND;
+                return COSMS_CORE_FILE_NOT_FOUND;
 
             case EACCES:
-                return COSMS_FILE_NO_ACCESS;
+                return COSMS_CORE_FILE_NO_ACCESS;
 
             case EMFILE:
             case ENFILE:
-                return COSMS_FILE_LIMIT_REACHED;
+                return COSMS_CORE_FILE_LIMIT_REACHED;
 
             default:
-                return COSMS_FILE_UNKOWN_ERROR;
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
         }
     }
 
@@ -174,7 +180,7 @@ CosmsFileError cosms_core_file_write(const char *path, const char *content, unsi
         int written_bytes = write(file, content + (size - remaining_bytes), bytes_to_write);
         if (written_bytes == -1) {
             close(file);
-            return COSMS_FILE_FAILED_TO_WRITE;
+            return COSMS_CORE_FILE_FAILED_TO_WRITE;
         }
 
         remaining_bytes -= written_bytes;
@@ -193,18 +199,18 @@ CosmsFileError cosms_core_file_write(const char *path, const char *content, unsi
         switch(GetLastError()) {
             case ERROR_FILE_NOT_FOUND:
             case ERROR_PATH_NOT_FOUND:
-                return COSMS_FILE_NOT_FOUND;
+                return COSMS_CORE_FILE_NOT_FOUND;
 
             case ERROR_ACCESS_DENIED:
             case ERROR_SHARING_VIOLATION:
             case ERROR_LOCK_VIOLATION:
-                return COSMS_FILE_NO_ACCESS;
+                return COSMS_CORE_FILE_NO_ACCESS;
 
             case ERROR_TOO_MANY_OPEN_FILES:
-                return COSMS_FILE_LIMIT_REACHED;
+                return COSMS_CORE_FILE_LIMIT_REACHED;
 
             default:
-                return COSMS_FILE_UNKOWN_ERROR;
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
         }
     }
 
@@ -219,7 +225,7 @@ CosmsFileError cosms_core_file_write(const char *path, const char *content, unsi
 
         if (!WriteFile(file, content + (size - remaining_bytes), bytes_to_write, &written_bytes, NULL)) {
             CloseHandle(file);
-            return COSMS_FILE_FAILED_TO_WRITE;
+            return COSMS_CORE_FILE_FAILED_TO_WRITE;
         }
 
         remaining_bytes -= written_bytes;
@@ -228,36 +234,36 @@ CosmsFileError cosms_core_file_write(const char *path, const char *content, unsi
     CloseHandle(file);
     #endif
 
-    return COSMS_FILE_OK;
+    return COSMS_CORE_FILE_OK;
 }
 
-const char *cosms_core_file_error_string(CosmsFileError error) {
+const char *cosms_core_file_error_string(CosmsCoreFileError error) {
     switch(error) {
-        case COSMS_FILE_OK:
+        case COSMS_CORE_FILE_OK:
             return "cosms-file everything ok";
 
-        case COSMS_FILE_NOT_FOUND:
+        case COSMS_CORE_FILE_NOT_FOUND:
             return "cosms-file path not found";
 
-        case COSMS_FILE_NO_ACCESS:
+        case COSMS_CORE_FILE_NO_ACCESS:
             return "cosms-file no access";
 
-        case COSMS_FILE_LIMIT_REACHED:
+        case COSMS_CORE_FILE_LIMIT_REACHED:
             return "cosms-file to many open files";
 
-        case COSMS_FILE_COULD_NOT_READ_SIZE:
+        case COSMS_CORE_FILE_COULD_NOT_READ_SIZE:
             return "cosms-file failed to read size";
 
-        case COSMS_FILE_UNKOWN_ERROR:
+        case COSMS_CORE_FILE_UNKOWN_ERROR:
             return "cosms-file unkown error occured";
 
-        case COSMS_FILE_FAILED_TO_ALLOCATE:
+        case COSMS_CORE_FILE_FAILED_TO_ALLOCATE:
             return "cosms-file failed to allocate memory";
 
-        case COSMS_FILE_FAILED_TO_READ:
+        case COSMS_CORE_FILE_FAILED_TO_READ:
             return "cosms-file failed to read content of file";
 
-        case COSMS_FILE_FAILED_TO_WRITE:
+        case COSMS_CORE_FILE_FAILED_TO_WRITE:
             return "cosms-file failed to write content to file";
 
         default:

tests/data/append-write-file.txt

@@ -0,0 +1 @@
+Hello, World!

tests/data/small-file.txt

@@ -0,0 +1 @@
+Hello, World!

tests/data/small-write-file.txt

@@ -0,0 +1 @@
+Hello, World!Hello, World!

tests/main.c

@@ -1,22 +1,7 @@
-#include <cosms-core/file.h>
-
-#include <stdio.h>
+#include "unit/unit.h"
 
 int main(void) {
-    unsigned long long buffer_size;
-    char *buffer;
-	CosmsFileError error = cosms_core_file_read("test.txt", &buffer, &buffer_size);
-    if (error != COSMS_FILE_OK) {
-        fprintf(stderr, "error(%d): %s\n", error, cosms_core_file_error_string(error));
-    } else {
-        printf("file read with content:\n%s\n", buffer);
-    }
-
-    char *temp_buffer = "Hello, World!";
-    error = cosms_core_file_write("write-file.txt", temp_buffer, 13, true);
-    if (error != COSMS_FILE_OK) {
-        fprintf(stderr, "error(%d): %s\n", error, cosms_core_file_error_string(error));
-    }
-
+    cosms_core_file_read_test();
+    cosms_core_file_write_test();
 	return 0;
 }

tests/test.h

@@ -0,0 +1,22 @@
+#ifndef COSMS_TEST
+#define COSMS_TEST
+
+#include <stdio.h>
+#include <stdbool.h>
+
+#define COSMS_CORE_TEST_HEADER(test_module_name) printf("----------------------------------------\n%s\n----------------------------------------\n", test_module_name);
+
+#define COSMS_CORE_TEST_START(test_name) printf("[*] running test %s...\n", test_name)
+#define COSMS_CORE_TEST_SUCCESS(test_name) printf("[+] test %s completed successfully!\n", test_name);
+#define COSMS_CORE_TEST_FAIL(test_name, error) printf("[-] test %s failed with error: %s\n", test_name, error)
+
+inline bool cosms_core_test_assert(const char *test_name, bool expression, const char *error_message) {
+    if (!expression) {
+        printf("[-] test %s failed with error: %s\n", test_name, error_message);
+        return false;
+    }
+
+    return true;
+}
+
+#endif

tests/unit/file.c

@@ -0,0 +1,148 @@
+#include "test.h"
+#include "unit/file.h"
+
+#include <cosms-core/file.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+void cosms_core_file_read_test() {
+    COSMS_CORE_TEST_HEADER("file read");
+
+    const char *current_test_name = "reading small file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    unsigned long long file_size;
+    char *file_buffer;
+    CosmsCoreFileError error = cosms_core_file_read("tests/data/small-file.txt", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        const char *expected_result = "Hello, World!";
+        if (cosms_core_test_assert(current_test_name, file_size == strlen(expected_result) && strcmp(expected_result, file_buffer) == 0, "result does not match expected result")) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+    }
+
+    free(file_buffer);
+
+    current_test_name = "reading large file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    file_size = 0;
+    file_buffer = NULL;
+    error = cosms_core_file_read("tests/data/large-file.txt", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        unsigned long long expected_size = 5242880000ULL;
+        char *expected_result = (char*)malloc((expected_size + 1) * sizeof(char));
+        if (!expected_result) {
+            printf("[-] failed to allocate memory for test aborting file read tests...\n");
+            free(file_buffer);
+            return;
+        }
+
+        memset(expected_result, 'a', expected_size);
+        expected_result[expected_size] = '\0';
+
+        if (cosms_core_test_assert(current_test_name, file_size == expected_size && strcmp(expected_result, file_buffer) == 0, "result does not match expected result")) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+
+        free(expected_result);
+    }
+
+    free(file_buffer);
+
+    current_test_name = "reading non existing file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    file_size = 0;
+    file_buffer = NULL;
+    error = cosms_core_file_read("non-existing-file.cosms", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_NOT_FOUND, cosms_core_file_error_string(error))) {
+        COSMS_CORE_TEST_SUCCESS(current_test_name);
+    }
+
+    free(file_buffer);
+}
+
+void cosms_core_file_write_test() {
+    COSMS_CORE_TEST_HEADER("file write");
+
+    const char *current_test_name = "writting small file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    char *file_buffer = "Hello, World!";
+    CosmsCoreFileError error = cosms_core_file_write("tests/data/small-write-file.txt", file_buffer, strlen(file_buffer), true);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/small-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+
+    current_test_name = "writting big file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    unsigned long long large_file_size = 5242880000ULL;
+    char *large_file_buffer = (char*)malloc((large_file_size + 1) * sizeof(char));
+    if (!large_file_buffer) {
+        printf("[-] failed to allocate memory for test aborting file read tests...\n");
+        free(large_file_buffer);
+        return;
+    }
+
+    memset(large_file_buffer, 'a', large_file_size);
+    large_file_buffer[large_file_size] = '\0';
+
+    error = cosms_core_file_write("tests/data/large-write-file.txt", large_file_buffer, large_file_size, true);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/large-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(large_file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+
+    free(large_file_buffer);
+
+    current_test_name = "appending file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_write("tests/data/small-write-file.txt", file_buffer, strlen(file_buffer), false);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/small-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            const char *expected_result = "Hello, World!Hello, World!";
+            if (cosms_core_test_assert(current_test_name, strcmp(expected_result, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+        
+        free(file_content);
+    }
+
+    current_test_name = "appending to non existing file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_write("tests/data/append-write-file.txt", file_buffer, strlen(file_buffer), false);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/append-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+}

tests/unit/file.h

@@ -0,0 +1,9 @@
+#ifndef COSMS_CORE_FILE_TEST
+#define COSMS_CORE_FILE_TEST
+
+#include <stdbool.h>
+
+void cosms_core_file_read_test();
+void cosms_core_file_write_test();
+
+#endif

tests/unit/unit.h

@@ -0,0 +1,6 @@
+#ifndef COSMS_UNIT
+#define COSMS_UNIT
+
+#include "file.h"
+
+#endif