diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..7ed8115
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,79 @@
+AccessModifierOffset: -4
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Right
+AlignOperands: false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: true
+BinPackParameters: true
+BreakBeforeBraces: Custom
+BraceWrapping:
+    AfterEnum: true
+    AfterClass: true
+    AfterControlStatement: true
+    AfterFunction: true
+    AfterNamespace: true
+    AfterStruct: true
+    AfterUnion: true
+    AfterExternBlock: true
+    BeforeCatch: true
+    BeforeElse: true
+    IndentBraces: false
+    SplitEmptyFunction: false
+    SplitEmptyRecord: false
+    SplitEmptyNamespace: false
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeComma
+BreakInheritanceList: BeforeComma
+BreakStringLiterals: true
+ColumnLimit: 80
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 4
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+FixNamespaceComments: true
+ForEachMacros: ['ILIST_FOREACH', 'ILIST_FOREACH_ENTRY']
+IncludeBlocks: Regroup
+IncludeCategories:
+    - Regex: '<.*>'
+      Priority: 1
+    - Regex: '.*'
+      Priority: 2
+IndentCaseLabels: false
+IndentPPDirectives: AfterHash
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+Language: Cpp
+NamespaceIndentation: All
+PointerAlignment: Right
+ReflowComments: true
+SortIncludes: true
+SortUsingDeclarations: false
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+TabWidth: 4
+UseTab: Never
diff --git a/epitar/Makefile b/epitar/Makefile
index b3430bf..8d614a7 100644
--- a/epitar/Makefile
+++ b/epitar/Makefile
@@ -27,7 +27,7 @@ debug: $(OBJS)
 	$(CC) -o $(TARGET) $^ $(LDFLAGS) $(LDLIBS)
 
 check:
-	dash ./tests/run.sh
+	bash ./tests/functional/run.sh
 
 clean:
 	$(RM) $(TARGET)
diff --git a/epitar/src/main.c b/epitar/src/main.c
index 3e1f5d9..5126471 100644
--- a/epitar/src/main.c
+++ b/epitar/src/main.c
@@ -1,6 +1,7 @@
 #include "tar/archive.h"
 #include "tar/extract.h"
 #include "utils/config.h"
+#include "utils/errors.h"
 
 int main(int argc, char **argv)
 {
@@ -31,22 +32,46 @@ int main(int argc, char **argv)
         err = archive(config.archive_file, config.input_files, config.verbose);
     }
 
+    int ret_code = 0;
     switch (err)
     {
     case SUCCESS:
-        return 0;
+        ret_code = 0;
+        break;
 
-    // case FILE_NOT_FOUND:
-    // case UNKNOWN_ERROR:
-    //     printf("epitar: error extracting tarball %s\n", config.archive_file);
-    //     return 3;
+        // case UNKNOWN_ERROR:
+        //     printf("epitar: error extracting tarball %s\n",
+        //     config.archive_file); ret_code = 3; break;
 
     case BAD_CHECKSUM:
         puts("epitar: bad checksum");
-        return 2;
+        ret_code = 2;
+        break;
+
+    case NOT_IMPLEMENTED:
+        puts("epitar: Function not implemented");
+        ret_code = 2;
+        break;
+
+    case FILE_NOT_FOUND:
+        if (config.mode == ARCHIVE)
+        {
+            puts("epitar: unable to add file tldr to tarball tata.tar");
+            ret_code = 3;
+            break;
+        }
+
+    case EMPTY_ARCHIVE:
+        puts("epitar: cowardly refusing to create an empty archive");
+        ret_code = 1;
+        break;
 
     default:
         printf("epitar: error extracting tarball %s\n", config.archive_file);
-        return 3;
+        ret_code = 3;
+        break;
     }
+
+    destroy_config(&config);
+    return ret_code;
 }
diff --git a/epitar/src/tar/archive.c b/epitar/src/tar/archive.c
index 014bcd1..dc2e88e 100644
--- a/epitar/src/tar/archive.c
+++ b/epitar/src/tar/archive.c
@@ -1,8 +1,131 @@
 #include "archive.h"
 
-enum error_code archive(char *archive_name, char **files, bool verbose) {
-    (void) archive_name;
-    (void) files;
-    (void) verbose;
-    return UNKNOWN_ERROR;
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "../utils/filesystem.h"
+#include "tar.h"
+
+/**
+ *
+ */
+static enum error_code archivefile(FILE *archive, char *file_path, bool verbose)
+{
+    if (verbose)
+        puts(file_path);
+
+    FILE *file = fopen(file_path, "r");
+    if (file == NULL)
+        return FILE_NOT_FOUND;
+    // Create header (ustar)
+    struct ustar_header header = { 0 };
+    strcpy(header.name, file_path);
+    //  Length
+    fseek(file, 0L, SEEK_END);
+    size_t file_size = ftell(file);
+    snprintf(header.size, TSIZELEN, "%lu", file_size);
+    fseek(file, 0L, SEEK_SET); // Go back
+
+    // TODO handle uid, gid, mtime, and links
+
+    // Write header
+    int nwritten = fwrite(&header, sizeof(struct ustar_header), 1, archive);
+    if (nwritten < sizeof(struct ustar_header))
+    {
+        fclose(file);
+        return CANNOT_CREATE_TARGET;
+    }
+
+    // Copy file content
+    fcat(file, archive, file_size);
+
+    // Add padding
+    size_t total_size =
+        (((file_size + BLOCK_SIZE - 1) / BLOCK_SIZE) * BLOCK_SIZE);
+    size_t padding = total_size - file_size;
+
+    char empty_buf[512] = { 0 };
+    size_t remaining = padding;
+    nwritten = fwrite(empty_buf, remaining, 1, archive);
+    if (nwritten < remaining)
+    {
+        fclose(file);
+        return CANNOT_CREATE_TARGET;
+    }
+
+    return SUCCESS;
+}
+
+/**
+ * @brief Archives a hole directory (recursively)
+ * @warn Assumes that the director path is valid
+ * @return SUCCESS or the corresponding error
+ */
+static enum error_code archivedir(FILE *archive, char *dir_path, bool verbose)
+{
+    // Add the directory itself
+    if (verbose)
+        puts(dir_path);
+
+    // Archive members
+    char *filename;
+    while ((filename = listdirectory(dir_path)) != NULL)
+    {
+        enum error_code err;
+        enum error_code isdir = isdirectory(filename);
+        if (isdir == FILE_NOT_FOUND)
+            // Does not exists
+            err = FILE_NOT_FOUND;
+        else if (isdir == SUCCESS)
+            // Directory
+            err = archivedir(archive, filename, verbose);
+        else
+            // File
+            err = archivefile(archive, filename, verbose);
+
+        if (err != SUCCESS)
+        {
+            freedirectory();
+            return err;
+        }
+    }
+
+    freedirectory(); // Just in case
+    return SUCCESS;
+}
+
+enum error_code archive(char *archive_name, char **files, bool verbose)
+{
+    if (archive_name == NULL || files == NULL)
+        return UNKNOWN_ERROR;
+    if (*files == NULL)
+        return EMPTY_ARCHIVE;
+
+    FILE *archive_stream = fopen(archive_name, "w+");
+
+    char **current_file = files;
+    while (*current_file != NULL)
+    {
+        enum error_code err;
+        enum error_code isdir = isdirectory(*current_file);
+        if (isdir == FILE_NOT_FOUND)
+            // Does not exists
+            err = FILE_NOT_FOUND;
+        else if (isdir == SUCCESS)
+            // Directory
+            err = archivedir(archive_stream, *current_file, verbose);
+        else
+            // File
+            err = archivefile(archive_stream, *current_file, verbose);
+
+        if (err != SUCCESS)
+        {
+            fclose(archive_stream);
+            return err;
+        }
+    }
+
+    fclose(archive_stream);
+    return SUCCESS;
 }
diff --git a/epitar/src/tar/extract.c b/epitar/src/tar/extract.c
index 1de4b9d..9c7ddbf 100644
--- a/epitar/src/tar/extract.c
+++ b/epitar/src/tar/extract.c
@@ -13,7 +13,6 @@
  */
 static enum error_code extract_ustar(FILE *stream, struct ustar_header *header)
 {
-
     struct file_stats stats = { .name = header->name,
                                 .length = strtol(header->size, NULL, 8),
                                 .content_stream = stream,
@@ -70,14 +69,14 @@ static enum error_code extract_file(FILE *content, union tar_header *header,
     if ((ustar_header = get_ustar_header(header)) != NULL)
     {
         if (verbose)
-            printf("./%s\n", ustar_header->name);
+            printf("%s\n", ustar_header->name);
         return extract_ustar(content, ustar_header);
     }
     // UNIXTAR
     else if ((unixtar_header = get_unixtar_header(header)) != NULL)
     {
         if (verbose)
-            printf("./%s", unixtar_header->name);
+            printf("%s\n", unixtar_header->name);
         return extract_unixtar(content, unixtar_header);
     }
     // Unsupported format
@@ -140,7 +139,8 @@ enum error_code extract(char *archive_name, bool verbose)
 
         // Calculate how many padding bytes need to be skipped
         size_t file_size = strtol(header.ustar.size, NULL, 8);
-        size_t padded_size = ((file_size + BLOCK_SIZE - 1) / BLOCK_SIZE) * BLOCK_SIZE;
+        size_t padded_size =
+            ((file_size + BLOCK_SIZE - 1) / BLOCK_SIZE) * BLOCK_SIZE;
         size_t skip_bytes = padded_size - file_size;
 
         if (skip_bytes > 0 && fseek(stream, skip_bytes, SEEK_CUR) != 0)
diff --git a/epitar/src/tar/tar.h b/epitar/src/tar/tar.h
index ebf660c..8630b01 100644
--- a/epitar/src/tar/tar.h
+++ b/epitar/src/tar/tar.h
@@ -40,6 +40,9 @@
 #define TOWRITE 00002 /* write by other */
 #define TOEXEC 00001 /* execute/search by other */
 
+// Non standard definitions
+#define TSIZELEN 12 /* Length of the size field */
+
 // === Structures
 
 struct ustar_header
diff --git a/epitar/src/utils/config.c b/epitar/src/utils/config.c
index e2d82c6..ba09793 100644
--- a/epitar/src/utils/config.c
+++ b/epitar/src/utils/config.c
@@ -203,5 +203,5 @@ void config_destroy(struct config *config)
 
     // Note: archive_file points to argv, so we don't free it
 
-    free(config);
+    // free(config);
 }
diff --git a/epitar/src/utils/errors.h b/epitar/src/utils/errors.h
index eaf81ea..78caf7c 100644
--- a/epitar/src/utils/errors.h
+++ b/epitar/src/utils/errors.h
@@ -6,11 +6,14 @@ enum error_code
     SUCCESS = 0,
     PENDING,
     UNKNOWN_ERROR,
+    GENERIC_ERROR,
     FILE_NOT_FOUND,
     BAD_CHECKSUM,
     INVALID_FORMAT,
     CANNOT_CREATE_TARGET,
     TARGET_ALREADY_EXISTS,
+    NO_TARGET_PROVIDED,
+    EMPTY_ARCHIVE,
     NOT_IMPLEMENTED
 };
 
diff --git a/epitar/src/utils/filesystem.c b/epitar/src/utils/filesystem.c
index aac2b70..09becbc 100644
--- a/epitar/src/utils/filesystem.c
+++ b/epitar/src/utils/filesystem.c
@@ -1,8 +1,8 @@
 #define _POSIX_C_SOURCE 200809L
 
 #include "filesystem.h"
-#include "errors.h"
 
+#include <dirent.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
@@ -11,9 +11,15 @@
 #include <unistd.h>
 #include <utime.h>
 
+#include "errors.h"
+
+static char *current_dir_path = NULL;
+static DIR *current_dir = NULL;
+
 enum error_code create_directory(struct file_stats *stats)
 {
-    if (stats == NULL || stats->name == NULL || stats->mode == NULL || stats->uid == NULL || stats->gid == NULL || stats->mtime == NULL)
+    if (stats == NULL || stats->name == NULL || stats->mode == NULL
+        || stats->uid == NULL || stats->gid == NULL || stats->mtime == NULL)
         return UNKNOWN_ERROR;
     // Create dir
     struct stat st = { 0 };
@@ -59,9 +65,9 @@ enum error_code create_link(struct file_stats *stats, char *target)
     if (errc != SUCCESS)
         return errc;
     // May change the target mode instead of the limk itsel
-    // also lchmod is not available on all systems so just ignoring this property here
-    // errc = setmode(stats->name, stats->mode);
-    // if (errc != SUCCESS)
+    // also lchmod is not available on all systems so just ignoring this
+    // property here errc = setmode(stats->name, stats->mode); if (errc !=
+    // SUCCESS)
     //     return errc;
 
     return SUCCESS;
@@ -83,16 +89,7 @@ enum error_code create_file(struct file_stats *stats)
     if (file_stream == NULL)
         return CANNOT_CREATE_TARGET;
     // Copy content
-    char buffer[4096];
-    size_t remaining = stats->length;
-    while (remaining > 0) {
-        size_t to_read = (remaining < sizeof(buffer)) ? remaining : sizeof(buffer);
-        size_t bytes_read = fread(buffer, 1, to_read, stats->content_stream);
-        if (bytes_read == 0)
-            break;  // Reached EOF
-        fwrite(buffer, 1, bytes_read, file_stream);
-        remaining -= bytes_read;
-    }
+    fcat(stats->content_stream, file_stream, stats->length);
 
     // Close file
     fclose(file_stream);
@@ -115,13 +112,13 @@ enum error_code create_file(struct file_stats *stats)
 enum error_code setowner(char *path, char *uid, char *gid)
 {
     if (path == NULL || uid == NULL || gid == NULL)
-           return UNKNOWN_ERROR;
+        return UNKNOWN_ERROR;
 
-       uid_t uid_val = strtol(uid, NULL, 10);
-       gid_t gid_val = strtol(gid, NULL, 10);
+    uid_t uid_val = strtol(uid, NULL, 10);
+    gid_t gid_val = strtol(gid, NULL, 10);
 
-       int err = chown(path, uid_val, gid_val);
-       return err == 0 ? SUCCESS : CANNOT_CREATE_TARGET;
+    int err = chown(path, uid_val, gid_val);
+    return err == 0 ? SUCCESS : CANNOT_CREATE_TARGET;
 }
 
 enum error_code setmtime(char *path, char *mtime)
@@ -155,3 +152,66 @@ enum error_code setmode(char *path, char *mode)
     int err = chmod(path, mode_val);
     return err == 0 ? SUCCESS : CANNOT_CREATE_TARGET;
 }
+
+enum error_code isdirectory(char *path)
+{
+    struct stat st;
+    if (stat(path, &st) == -1)
+        return FILE_NOT_FOUND;
+    return S_ISREG(st.st_mode) ? SUCCESS : GENERIC_ERROR;
+}
+
+char *listdirectory(char *path)
+{
+    struct dirent *de;
+
+    // Check for path changes
+    if (current_dir_path != NULL && strcmp(current_dir_path, path) != 0)
+    {
+        // Close previous dir
+        freedirectory();
+        // Open new dir
+        current_dir = opendir(current_dir_path);
+        if (current_dir == NULL)
+        {
+            freedirectory();
+            return NULL;
+        }
+
+        current_dir_path = strdup(path);
+    }
+
+    // Get following file
+    de = readdir(current_dir);
+    if (de == NULL)
+    {
+        freedirectory();
+        return NULL;
+    }
+
+    return de->d_name;
+}
+
+void freedirectory()
+{
+    if (current_dir != NULL)
+        closedir(current_dir);
+    if (current_dir_path != NULL)
+        free(current_dir_path);
+}
+
+void fcat(FILE *src_stream, FILE *dst_stream, size_t size)
+{
+    char buffer[4096];
+    size_t remaining = size;
+    while (remaining > 0)
+    {
+        size_t to_read =
+            (remaining < sizeof(buffer)) ? remaining : sizeof(buffer);
+        size_t bytes_read = fread(buffer, 1, to_read, src_stream);
+        if (bytes_read == 0)
+            break; // Reached EOF
+        fwrite(buffer, bytes_read, 1, dst_stream);
+        remaining -= bytes_read;
+    }
+}
diff --git a/epitar/src/utils/filesystem.h b/epitar/src/utils/filesystem.h
index 6b16787..b504c4d 100644
--- a/epitar/src/utils/filesystem.h
+++ b/epitar/src/utils/filesystem.h
@@ -21,8 +21,44 @@ enum error_code create_directory(struct file_stats *stats);
 enum error_code create_link(struct file_stats *stats, char *target);
 enum error_code create_file(struct file_stats *stats);
 
+void fcat(FILE *src_stream, FILE *dst_stream, size_t size);
+
 enum error_code setowner(char *path, char *uid, char *gid);
 enum error_code setmtime(char *path, char *mtime);
 enum error_code setmode(char *path, char *mode);
 
+/**
+ * @brief Retrieves the file informations at path and build the corresponding
+ * file_stats struct
+ * @arg path The given path
+ * @arg stats Pointer to where the function should write file informations
+ * @return FILE_NOT_FOUND if doesn's exists, GENERIC_ERROR if .
+ */
+enum error_code getstats(char *path, struct file_stats *stats);
+
+/**
+ * @brief Check if given path exists and is a directory
+ * @option path The given path
+ * @return FILE_NOT_FOUND if doesn's exists, GENERIC_ERROR if it is not a
+ * directory, SUCCESS otherwise.
+ */
+enum error_code isdirectory(char *path);
+
+/**
+ * @brief Lists a directory content. Returns a new member name after each
+ * iteration and NULL when there are no more to list.
+ * @arg path The directory path
+ * @return The current item name or NULL
+ * @warn The return item statically allocated and freed after finishing to list
+ * the directory or when freedirectory() is called.
+ */
+char *listdirectory(char *path);
+
+/**
+ * @brief Closes the last opened (and not closed) directory and frees the
+ * related allocated memory
+ * @warn Use this function if you only partially listed a directory previously.
+ */
+void freedirectory();
+
 #endif // FILESYSTEM_H
diff --git a/epitar/tests/functional/run.sh b/epitar/tests/functional/run.sh
new file mode 100644
index 0000000..37d5497
--- /dev/null
+++ b/epitar/tests/functional/run.sh
@@ -0,0 +1,329 @@
+#!/bin/sh
+
+# Testsuitator (mon bien-aimé) le retour <3
+
+###################
+#    Variables    #
+###################
+
+executable="$BIN_PATH"
+ref_executable="tar"
+
+total_tests=0
+errors_count=0
+timeouts_count=0
+
+# Create temp directory for tests
+test_dir=$(mktemp -d)
+trap "rm -rf $test_dir" EXIT
+
+
+##################
+#     Colors     #
+##################
+
+# Reset
+Color_Off='\033[0m'       # Text Reset
+
+# Regular Colors
+Black='\033[0;30m'        # Black
+Red='\033[0;31m'          # Red
+Green='\033[0;32m'        # Green
+Yellow='\033[0;33m'       # Yellow
+Blue='\033[0;34m'         # Blue
+Purple='\033[0;35m'       # Purple
+Cyan='\033[0;36m'         # Cyan
+White='\033[0;37m'        # White
+
+# Bold
+BBlack='\033[1;30m'       # Black
+BRed='\033[1;31m'         # Red
+BGreen='\033[1;32m'       # Green
+BYellow='\033[1;33m'      # Yellow
+BBlue='\033[1;34m'        # Blue
+BPurple='\033[1;35m'      # Purple
+BCyan='\033[1;36m'        # Cyan
+BWhite='\033[1;37m'       # White
+
+
+##################
+#    Wrappers    #
+##################
+
+# @arg test name
+# @arg command
+check_result() {
+    local test_name="$1"
+    local actual_code="$2"
+    local ref_code="$3"
+
+    test_failed=0
+
+    # Check return code
+    if [[ "$actual_code" -eq 124 ]]; then
+        echo -e $BRed "TIMEOUT" $Color_Off
+        echo -e '    ' "on '$test_name'"
+        echo -e '    ' "Expected code $ref_code but got $actual_code"
+        ((timeouts_count++))
+        test_failed=1
+    elif [[ "$actual_code" -ne "$ref_code" ]]; then
+        echo -e $BRed "FAILED" $Color_Off
+        echo -e '    ' "on '$test_name'"
+        echo -e '    ' "Expected code $ref_code but got $actual_code"
+        test_failed=1
+    else
+        echo -e $BGreen "OK" $Color_Off
+    fi
+
+    if [[ "$test_failed" -eq 1 ]]; then
+        ((errors_count++))
+    fi
+}
+
+# @arg test name
+# @arg test command
+test_archive_creation() {
+    local test_name="$1"
+    local archive_name="$2"
+    local input_files="$3"
+
+    echo -e $BBlue "========== $test_name ==========" $Color_Off
+
+    # Create test files
+    local test_subdir="$test_dir/$test_name"
+    mkdir -p "$test_subdir"
+    cd "$test_subdir"
+
+    # Prepare input files
+    local file_list=""
+    for file in $input_files; do
+        echo "content of $file" > "$file"
+        file_list="$file_list $file"
+    done
+
+    # Test with epitar
+    echo -e -n $Blue "= [ARCHIVE]" $Color_Off " "
+    timeout 2 $executable -c "$archive_name" $file_list > /dev/null 2>&1
+    actual_code=$?
+
+    if [[ $actual_code -eq 0 && -f "$archive_name" ]]; then
+        echo -e $BGreen "OK" $Color_Off
+    else
+        echo -e $BRed "FAILED" $Color_Off
+        ((errors_count++))
+    fi
+    ((total_tests++))
+
+    # Test extraction
+    if [[ -f "$archive_name" ]]; then
+        echo -e -n $Blue "= [EXTRACT] " $Color_Off " "
+        extract_dir="extract_test"
+        mkdir "$extract_dir"
+        cd "$extract_dir"
+        timeout 2 $executable -x "../$archive_name" > /dev/null 2>&1
+        actual_code=$?
+
+        if [[ $actual_code -eq 0 ]]; then
+            # Check if files were extracted
+            all_extracted=1
+            for file in $file_list; do
+                if [[ ! -f "$file" ]]; then
+                    all_extracted=0
+                fi
+            done
+            if [[ $all_extracted -eq 1 ]]; then
+                echo -e $BGreen "OK" $Color_Off
+            else
+                echo -e $BRed "FAILED (files not extracted)" $Color_Off
+                ((errors_count++))
+            fi
+        else
+            echo -e $BRed "FAILED (exit code $actual_code)" $Color_Off
+            ((errors_count++))
+        fi
+        ((total_tests++))
+        cd ..
+    fi
+
+    cd /
+    echo -e "\n"
+}
+
+# @arg test name
+# @arg files to test
+test_verbose_output() {
+    local test_name="$1"
+    local files="$2"
+
+    echo -e $BBlue "========== $test_name ==========" $Color_Off
+
+    local test_subdir="$test_dir/${test_name}_verbose"
+    mkdir -p "$test_subdir"
+    cd "$test_subdir"
+
+    # Create test files
+    for file in $files; do
+        echo "test content" > "$file"
+    done
+
+    echo -e -n $Blue "= [VERBOSE]" $Color_Off " "
+    archive="test_verbose.tar"
+    timeout 2 $executable -cv "$archive" $files > output.txt 2>&1
+    actual_code=$?
+
+    # Check if output contains filenames
+    local all_found=1
+    for file in $files; do
+        if ! grep -q "$file" output.txt; then
+            all_found=0
+        fi
+    done
+
+    if [[ $actual_code -eq 0 && $all_found -eq 1 ]]; then
+        echo -e $BGreen "OK" $Color_Off
+    else
+        echo -e $BRed "FAILED" $Color_Off
+        ((errors_count++))
+    fi
+    ((total_tests++))
+
+    cd /
+    echo -e "\n"
+}
+
+# @arg test name
+test_help() {
+    local test_name="$1"
+
+    echo -e $BBlue "========== $test_name ==========" $Color_Off
+
+    echo -e -n $Blue "= [HELP]" $Color_Off " "
+    timeout 1 $executable -h > /dev/null 2>&1
+    actual_code=$?
+
+    if [[ $actual_code -eq 0 ]]; then
+        echo -e $BGreen "OK" $Color_Off
+    else
+        echo -e $BRed "FAILED" $Color_Off
+        ((errors_count++))
+    fi
+    ((total_tests++))
+
+    echo -e "\n"
+}
+
+# @arg test name
+test_invalid_args() {
+    local test_name="$1"
+    local args="$2"
+
+    echo -e $BBlue "========== $test_name ==========" $Color_Off
+
+    echo -e -n $Blue "= [INVALID]" $Color_Off " "
+    timeout 1 $executable $args > /dev/null 2>&1
+    actual_code=$?
+
+    # Should fail
+    if [[ $actual_code -ne 0 ]]; then
+        echo -e $BGreen "OK (correctly rejected)" $Color_Off
+    else
+        echo -e $BRed "FAILED (should have been rejected)" $Color_Off
+        ((errors_count++))
+    fi
+    ((total_tests++))
+
+    echo -e "\n"
+}
+
+summarize() {
+    # Compute statistics
+    (( passed_tests = $total_tests - $errors_count ))
+    if [[ $total_tests -gt 0 ]]; then
+        (( tests_percentage = 100 * $passed_tests / $total_tests ))
+    else
+        tests_percentage=0
+    fi
+
+    # Adapt color depending on results
+    if [[ tests_percentage -gt 80 ]]; then
+        coverage_color=$BGreen
+    elif [[ tests_percentage -gt 50 ]]; then
+        coverage_color=$BYellow
+    else
+        coverage_color=$BRed
+    fi
+
+    # Print
+    echo -e $BWhite "\n\n""===========" $BWhite"Summary"$Color_Off "\n"
+    echo -e " Passed $coverage_color$passed_tests/$total_tests$Color_Off tests ($coverage_color$tests_percentage%$Color_Off)"
+    echo -e " Got $timeouts_count timeout(s)"
+    if [ "$OUTPUT_FILE" != "" ]; then
+        echo $tests_percentage > "$OUTPUT_FILE"
+    fi
+    echo
+}
+
+
+#################
+#     Tests     #
+#################
+
+echo -e "\n\n""===$BGreen TestsuitatorX 2.0 Ultra Pro Max+ 365 Premium Gris Sidéral" "\n\n"$Color_Off
+
+echo -e "\n$BBlue=== Basic Operations ===$Color_Off"
+test_archive_creation "Single file" "single.tar" "file1.txt"
+test_archive_creation "Multiple files" "multi.tar" "file1.txt file2.txt file3.txt"
+test_archive_creation "Files with spaces" "spaces.tar" "file_with_underscore.txt"
+
+echo -e "\n$BBlue=== Verbose Output ===$Color_Off"
+test_verbose_output "Verbose creation" "file1.txt file2.txt"
+
+echo -e "\n$BBlue=== Help and Invalid Arguments ===$Color_Off"
+test_help "Help flag"
+test_invalid_args "No arguments" ""
+test_invalid_args "Invalid flag" "-z"
+test_invalid_args "Missing archive" "-c"
+test_invalid_args "Extract with files" "-x archive.tar file.txt"
+
+echo -e "\n$BBlue=== Edge Cases ===$Color_Off"
+
+# Test with empty archive
+test_subdir="$test_dir/empty_archive"
+mkdir -p "$test_subdir"
+cd "$test_subdir"
+echo -e $BBlue "========== Empty archive ==========" $Color_Off
+echo -e -n $Blue "= [CREATE_EMPTY]" $Color_Off " "
+touch dummy
+timeout 2 $executable -c "empty.tar" dummy > /dev/null 2>&1
+actual_code=$?
+rm dummy
+if [[ $actual_code -eq 0 ]]; then
+    echo -e $BGreen "OK" $Color_Off
+else
+    echo -e $BRed "FAILED" $Color_Off
+    ((errors_count++))
+fi
+((total_tests++))
+cd /
+echo -e "\n"
+
+# Test combined flags
+test_subdir="$test_dir/combined_flags"
+mkdir -p "$test_subdir"
+cd "$test_subdir"
+echo -e $BBlue "========== Combined flags (-cv) ==========" $Color_Off
+echo -e -n $Blue "= [COMBINED]" $Color_Off " "
+echo "content" > test.txt
+timeout 2 $executable -cv "test.tar" test.txt > /dev/null 2>&1
+actual_code=$?
+if [[ $actual_code -eq 0 && -f "test.tar" ]]; then
+    echo -e $BGreen "OK" $Color_Off
+else
+    echo -e $BRed "FAILED" $Color_Off
+    ((errors_count++))
+fi
+((total_tests++))
+cd /
+echo -e "\n"
+
+summarize