simplification

test/test_mandatory.py

@@ -126,6 +126,31 @@ def test_mandatory_default():
     assert 'mandatory' in prop
 
 
+def test_mandatory_delete():
+    descr = make_description()
+    config = Config(descr)
+    config.read_only()
+    config.str
+    try:
+        config.str1
+    except PropertiesOptionError as err:
+        prop = err.proptype
+    assert 'mandatory' in prop
+    config.read_write()
+    config.str1 = 'yes'
+    config.read_only()
+    assert config.str1 == 'yes'
+    config.cfgimpl_get_settings().remove('frozen')
+    prop = []
+    try:
+        del(config.str1)
+    except PropertiesOptionError as err:
+        prop = err.proptype
+    assert 'mandatory' in prop
+    del(config.str)
+    assert config.str1 == 'yes'
+
+
 #valeur vide : None, '', u'', ...
 def test_mandatory_none():
     descr = make_description()