diff --git a/tests/test_functionnal.py b/tests/test_functionnal.py
new file mode 100644
index 0000000..0f2abb9
--- /dev/null
+++ b/tests/test_functionnal.py
@@ -0,0 +1,71 @@
+import os
+import sys
+import tempfile
+import subprocess
+import tempfile
+import shutil
+import multiprocessing
+import pytest
+
+CURRENT_DIR = os.path.dirname(os.path.abspath(__file__))
+SCRIPTS_DIR = os.path.join(CURRENT_DIR, '..', 'scripts')
+EXAMPLES_DIR = os.path.join(CURRENT_DIR, '..', 'examples')
+DB_DIR = os.path.join(CURRENT_DIR, '..', 'db')
+
+sys.path.append(SCRIPTS_DIR)
+
+from binary_utils import Binary
+
+def get_matam_stats(f):
+    res_handler = open(f, 'r')
+    lines = res_handler.readlines()
+    i = None
+    for i, line in enumerate(lines):
+        if 'One-line stats' in line: break
+    stats = lines[i+1].strip()
+    stats = stats.split('\t')
+    stats = stats[-8:]
+    #stats = stats[:4] + stats[5:]
+    formated_stats = []
+    for s in stats:
+        s = s.strip()
+        if '%' in s:
+            s = s.replace('%','')
+        if '.' in s:
+            s = float(s)
+        else: s = int(s)
+        formated_stats.append(s)
+
+    res_handler.close()
+    return formated_stats
+
+@pytest.mark.skipif(not os.path.isdir(DB_DIR),
+                    reason= 'DB_DIR is missing:%s' % DB_DIR)
+@pytest.mark.skipif(Binary.which('exonerate') is None,
+                    reason= 'Exonerate have to be in your PATH:%s' % sys.path)
+def test_matam():
+
+    out = tempfile.mkdtemp(dir='/tmp/', prefix='matam_functionnal_test_')
+    p = {
+        'bin' : os.path.join(SCRIPTS_DIR, 'matam_assembly.py'),
+        'reads' : os.path.join(EXAMPLES_DIR, '16sp_simulated_dataset/16sp.art_HS25_pe_100bp_50x.fq'),
+        'db' : os.path.join(DB_DIR, 'SILVA_128_SSURef_NR95'),
+        'true_ref' : os.path.join(EXAMPLES_DIR, '16sp_simulated_dataset/16sp.fasta'),
+        'true_ref_taxo' : os.path.join(EXAMPLES_DIR, '16sp_simulated_dataset/16sp.taxo.tab'),
+        'out' : out,
+        'log' : os.path.join(out, 'matam.log'),
+        'cpu' : multiprocessing.cpu_count()
+    }
+    cmd = '{bin} -i {reads} -d {db} -o {out} --true_references {true_ref} --true_ref_taxo {true_ref_taxo} --cpu {cpu} --max_memory 10000 --debug --perform_taxonomic_assignment > {log} 2>&1'.format(**p)
+    print(cmd)
+    try:
+        completed_process = subprocess.run(cmd, shell=True)
+        assert completed_process.returncode == 0
+        stats = get_matam_stats(p['log'])
+        error_rate, error_rate2 = stats[5:7]
+        assert error_rate <= 0.16
+        assert error_rate2 <= 0.13
+
+    finally:
+        if os.path.isdir(out):
+            shutil.rmtree(out)