update for mypy --strict, prepare de-inheritance (Loader/Dumper)0.14.0

1 files changed, 107 insertions, 0 deletions

diff --git a/_test/test_add_xxx.py b/_test/test_add_xxx.py
new file mode 100644
index 0000000..c283b44
--- /dev/null
+++ b/_test/test_add_xxx.py
@@ -0,0 +1,107 @@
+# coding: utf-8
+
+import re
+import pytest   # NOQA
+import ruamel.yaml
+
+from roundtrip import round_trip, dedent, round_trip_load, round_trip_dump  # NOQA
+
+
+# from PyYAML docs
+class Dice(tuple):
+    def __new__(cls, a, b):
+        return tuple.__new__(cls, [a, b])
+
+    def __repr__(self):
+        return "Dice(%s,%s)" % self
+
+
+def dice_constructor(loader, node):
+    value = loader.construct_scalar(node)
+    a, b = map(int, value.split('d'))
+    return Dice(a, b)
+
+
+def dice_representer(dumper, data):
+    return dumper.represent_scalar(u'!dice', u'{}d{}'.format(*data))
+
+
+def test_dice_constructor():
+    ruamel.yaml.add_constructor(u'!dice', dice_constructor)
+    data = ruamel.yaml.load('initial hit points: !dice 8d4', Loader=ruamel.yaml.Loader)
+    assert str(data) == "{'initial hit points': Dice(8,4)}"
+
+
+def test_dice_constructor_with_loader():
+    ruamel.yaml.add_constructor(u'!dice', dice_constructor, Loader=ruamel.yaml.Loader)
+    data = ruamel.yaml.load('initial hit points: !dice 8d4', Loader=ruamel.yaml.Loader)
+    assert str(data) == "{'initial hit points': Dice(8,4)}"
+
+
+def test_dice_representer():
+    ruamel.yaml.add_representer(Dice, dice_representer)
+    assert ruamel.yaml.dump(dict(gold=Dice(10, 6)), default_flow_style=False) == \
+        "gold: !dice '10d6'\n"
+
+
+def test_dice_implicit_resolver():
+    pattern = re.compile(r'^\d+d\d+$')
+    ruamel.yaml.add_implicit_resolver(u'!dice', pattern)
+    assert ruamel.yaml.dump(dict(treasure=Dice(10, 20)), default_flow_style=False) == \
+        'treasure: 10d20\n'
+    assert ruamel.yaml.load('damage: 5d10', Loader=ruamel.yaml.Loader) == \
+        dict(damage=Dice(5, 10))
+
+
+class Obj1(dict):
+    def __init__(self, suffix):
+        self._suffix = suffix
+        self._node = None
+
+    def add_node(self, n):
+        self._node = n
+
+    def __repr__(self):
+        return 'Obj1(%s->%s)' % (self._suffix, self.items())
+
+    def dump(self):
+        return repr(self._node)
+
+
+class YAMLObj1(object):
+    yaml_tag = u'!obj:'
+
+    @classmethod
+    def from_yaml(cls, loader, suffix, node):
+        obj1 = Obj1(suffix)
+        if isinstance(node, ruamel.yaml.MappingNode):
+            obj1.add_node(loader.construct_mapping(node))
+        else:
+            raise NotImplementedError
+        return obj1
+
+    @classmethod
+    def to_yaml(cls, dumper, data):
+        return dumper.represent_scalar(cls.yaml_tag + data._suffix, data.dump())
+
+
+def test_yaml_obj():
+    ruamel.yaml.add_representer(Obj1, YAMLObj1.to_yaml)
+    ruamel.yaml.add_multi_constructor(YAMLObj1.yaml_tag, YAMLObj1.from_yaml)
+    x = ruamel.yaml.load('!obj:x.2\na: 1', Loader=ruamel.yaml.Loader)
+    print(x)
+    assert ruamel.yaml.dump(x) == '''!obj:x.2 "{'a': 1}"\n'''
+
+
+def test_yaml_obj_with_loader_and_dumper():
+    ruamel.yaml.add_representer(Obj1, YAMLObj1.to_yaml, Dumper=ruamel.yaml.Dumper)
+    ruamel.yaml.add_multi_constructor(YAMLObj1.yaml_tag, YAMLObj1.from_yaml,
+                                      Loader=ruamel.yaml.Loader)
+    x = ruamel.yaml.load('!obj:x.2\na: 1', Loader=ruamel.yaml.Loader)
+    # x = ruamel.yaml.load('!obj:x.2\na: 1')
+    print(x)
+    assert ruamel.yaml.dump(x) == '''!obj:x.2 "{'a': 1}"\n'''
+
+
+# ToDo use nullege to search add_multi_representer and add_path_resolver
+# and add some test code