diff --git a/scotests/test_basic.py b/scotests/test_basic.py
index c98cb32..d16941e 100644
--- a/scotests/test_basic.py
+++ b/scotests/test_basic.py
@@ -11,12 +11,16 @@ Utiliser comme:
 """
 import random
 
+# La variable context est définie par le script de lancement
+# l'affecte ainsi pour évietr les warnins pylint:
+context = context  # pylint: disable=undefined-variable
+REQUEST = REQUEST  # pylint: disable=undefined-variable
 import scotests.sco_fake_gen as sco_fake_gen  # pylint: disable=import-error
 import sco_utils
 import sco_abs
 import sco_abs_views
 
-G = sco_fake_gen.ScoFake(context.Notes)  # pylint: disable=undefined-variable
+G = sco_fake_gen.ScoFake(context.Notes)
 G.verbose = False
 
 # --- Création d'étudiants
diff --git a/scotests/test_bonusmalus.py b/scotests/test_bonusmalus.py
index c2a629d..22588f9 100644
--- a/scotests/test_bonusmalus.py
+++ b/scotests/test_bonusmalus.py
@@ -11,8 +11,10 @@ Utiliser comme:
 
 """
 
-
-import scotests.sco_fake_gen as sco_fake_gen  # pylint: disable=import-error
+# La variable context est définie par le script de lancement
+# l'affecte ainsi pour évietr les warnins pylint:
+context = context  # pylint: disable=undefined-variable
+import scotests.sco_fake_gen as sco_fake_gen
 import sco_utils as scu
 import sco_moduleimpl
 
diff --git a/scotests/test_capitalisation.py b/scotests/test_capitalisation.py
index cd2a228..2bb88fb 100644
--- a/scotests/test_capitalisation.py
+++ b/scotests/test_capitalisation.py
@@ -10,13 +10,15 @@ Utiliser comme:
      scotests/scointeractive.sh -r TEST00 scotests/test_capitalisation.py
 
 """
-
+# La variable context est définie par le script de lancement
+# l'affecte ainsi pour évietr les warnins pylint:
+context = context  # pylint: disable=undefined-variable
 import scotests.sco_fake_gen as sco_fake_gen  # pylint: disable=import-error
 import sco_utils
 import sco_codes_parcours
 import sco_modalites
 
-G = sco_fake_gen.ScoFake(context.Notes)  # pylint: disable=undefined-variable
+G = sco_fake_gen.ScoFake(context.Notes)
 G.verbose = False
 
 # --- Création d'étudiants
diff --git a/scotests/test_demissions.py b/scotests/test_demissions.py
index 6028a05..41f681e 100644
--- a/scotests/test_demissions.py
+++ b/scotests/test_demissions.py
@@ -12,16 +12,24 @@ Utiliser comme:
      scotests/scointeractive.sh -r TEST00 scotests/test_demissions.py
 
 """
+import datetime
+import re
+import json
 
+# La variable context est définie par le script de lancement
+# l'affecte ainsi pour évietr les warnins pylint:
+context = context  # pylint: disable=undefined-variable
+REQUEST = REQUEST  # pylint: disable=undefined-variable
 import scotests.sco_fake_gen as sco_fake_gen  # pylint: disable=import-error
 import sco_utils
 import sco_bulletins
 
-G = sco_fake_gen.ScoFake(context.Notes)  # pylint: disable=undefined-variable
+G = sco_fake_gen.ScoFake(context.Notes)
 G.verbose = False
 
+nb_etuds = 10
 # --- Création d'étudiants
-etuds = [G.create_etud(code_nip=None) for _ in range(2)]
+etuds = [G.create_etud(code_nip=None) for _ in range(nb_etuds)]
 # --- Mise en place formation
 form, ue_list, mod_list = G.setup_formation(
     nb_semestre=1, titre="Essai 1", acronyme="ESS01"
@@ -59,3 +67,35 @@ print(bul["moy_gen"])
 
 assert bul["moy_gen"] == "NA"
 assert bul["ins"][0]["etat"] == "D"
+
+# ------------ Billets d'absences
+etud = etuds[1]  # non demissionnaire
+d = sem["date_debut_iso"]
+d_beg = datetime.datetime(*[int(x) for x in d.split("-")])
+d_end = d_beg + datetime.timedelta(2)
+description = "billet test 0"
+x = context.Absences.AddBilletAbsence(
+    d_beg.isoformat(),
+    d_end.isoformat(),
+    description=description,
+    etudid=etud["etudid"],
+    REQUEST=REQUEST,
+)
+#
+billet_id = re.search(r"billet_id value=\"([A-Z0-9]+)\"", x).group(1)
+context.Absences.deleteBilletAbsence(billet_id, REQUEST=REQUEST, dialog_confirmed=True)
+j = context.Absences.listeBilletsEtud(
+    etudid=etud["etudid"], REQUEST=REQUEST, format="json"
+)
+assert len(json.loads(j)) == 0
+x = context.Absences.AddBilletAbsence(
+    d_beg.isoformat(),
+    d_end.isoformat(),
+    description=description,
+    etudid=etud["etudid"],
+    REQUEST=REQUEST,
+)
+j = context.Absences.listeBilletsEtud(
+    etudid=etud["etudid"], REQUEST=REQUEST, format="json"
+)
+assert json.loads(j)[0]["description"] == description