Add fspath support. Ref #38.

ionelmc · ionelmc · commit 89c240bbb04b · 2020-05-30T20:16:44.000+03:00
diff --git a/src/lazy_object_proxy/cext.c b/src/lazy_object_proxy/cext.c
@@ -1282,6 +1282,7 @@ static PyMethodDef Proxy_methods[] = {
     { "__reversed__", (PyCFunction)Proxy_reversed, METH_NOARGS, 0 },
     { "__reduce__", (PyCFunction)Proxy_reduce, METH_NOARGS, 0 },
     { "__reduce_ex__", (PyCFunction)Proxy_reduce, METH_O, 0 },
+    { "__fspath__", (PyCFunction)Proxy_str, METH_NOARGS, 0 },
 #if PY_MAJOR_VERSION >= 3
     { "__round__",  (PyCFunction)Proxy_round, METH_NOARGS, 0 },
 #endif
diff --git a/src/lazy_object_proxy/simple.py b/src/lazy_object_proxy/simple.py
@@ -100,6 +100,7 @@ def __repr__(self, __getattr__=object.__getattribute__):
                 self.__factory__
             )
 
+    __fspath__ = make_proxy_method(str)
     __reversed__ = make_proxy_method(reversed)
 
     if PY3:
diff --git a/src/lazy_object_proxy/slots.py b/src/lazy_object_proxy/slots.py
@@ -152,6 +152,9 @@ def __repr__(self, __getattr__=object.__getattribute__):
                 self.__factory__
             )
 
+    def __fspath__(self):
+        return str(self.__wrapped__)
+
     def __reversed__(self):
         return reversed(self.__wrapped__)
 
diff --git a/tests/test_lazy_object_proxy.py b/tests/test_lazy_object_proxy.py
@@ -2,6 +2,7 @@
 
 import gc
 import imp
+import os
 import pickle
 import platform
 import sys
@@ -1943,3 +1944,8 @@ def __init__(self, func, **lazy_attr):
     proxy = LazyProxy(lambda: called.append(1) or Foo(), name='bar')
     assert proxy.name == 'bar'
     assert not called
+
+
+@pytest.mark.skipif(not hasattr(os, "fspath"), reason="No os.fspath support.")
+def test_fspath(lazy_object_proxy):
+    assert os.fspath(lazy_object_proxy.Proxy(lambda: '/tmp')) == '/tmp'

Original file line number	Diff line number	Diff line change
`@@ -100,6 +100,7 @@ def __repr__(self, __getattr__=object.__getattribute__):`
`100`	`100`	`self.__factory__`
`101`	`101`	`)`
`102`	`102`
	`103`	`+ __fspath__ = make_proxy_method(str)`
`103`	`104`	`__reversed__ = make_proxy_method(reversed)`
`104`	`105`
`105`	`106`	`if PY3:`
Original file line number	Diff line number	Diff line change
`@@ -152,6 +152,9 @@ def __repr__(self, __getattr__=object.__getattribute__):`
`152`	`152`	`self.__factory__`
`153`	`153`	`)`
`154`	`154`
	`155`	`+ def __fspath__(self):`
	`156`	`+ return str(self.__wrapped__)`
	`157`	`+`
`155`	`158`	`def __reversed__(self):`
`156`	`159`	`return reversed(self.__wrapped__)`
`157`	`160`