Replace tests of legacy API with comparable tests of traversable API.

.coveragerc

@@ -3,6 +3,7 @@ omit =
 	# leading `*/` for pytest-dev/pytest-cov#456
 	*/.tox/*
 	*/_itertools.py
+	*/_legacy.py
 
 [report]
 show_missing = True

CHANGES.rst

@@ -1,3 +1,9 @@
+v5.4.0
+======
+
+* *80: Test suite now relies entirely on the traversable
+  API.
+
 v5.3.0
 ======
 

importlib_resources/_common.py

@@ -6,7 +6,7 @@
 import types
 import importlib
 
-from typing import Union, Any, Optional
+from typing import Union, Optional
 from .abc import ResourceReader, Traversable
 
 from ._compat import wrap_spec
@@ -23,19 +23,6 @@ def files(package):
     return from_package(get_package(package))
 
 
-def normalize_path(path):
-    # type: (Any) -> str
-    """Normalize a path by ensuring it is a string.
-
-    If the resulting string contains path separators, an exception is raised.
-    """
-    str_path = str(path)
-    parent, file_name = os.path.split(str_path)
-    if parent:
-        raise ValueError(f'{path!r} must be only a file name')
-    return file_name
-
-
 def get_resource_reader(package):
     # type: (types.ModuleType) -> Optional[ResourceReader]
     """

importlib_resources/_legacy.py

@@ -4,7 +4,7 @@
 import types
 import warnings
 
-from typing import Union, Iterable, ContextManager, BinaryIO, TextIO
+from typing import Union, Iterable, ContextManager, BinaryIO, TextIO, Any
 
 from . import _common
 
@@ -27,16 +27,29 @@ def wrapper(*args, **kwargs):
     return wrapper
 
 
+def normalize_path(path):
+    # type: (Any) -> str
+    """Normalize a path by ensuring it is a string.
+
+    If the resulting string contains path separators, an exception is raised.
+    """
+    str_path = str(path)
+    parent, file_name = os.path.split(str_path)
+    if parent:
+        raise ValueError(f'{path!r} must be only a file name')
+    return file_name
+
+
 @deprecated
 def open_binary(package: Package, resource: Resource) -> BinaryIO:
     """Return a file-like object opened for binary reading of the resource."""
-    return (_common.files(package) / _common.normalize_path(resource)).open('rb')
+    return (_common.files(package) / normalize_path(resource)).open('rb')
 
 
 @deprecated
 def read_binary(package: Package, resource: Resource) -> bytes:
     """Return the binary contents of the resource."""
-    return (_common.files(package) / _common.normalize_path(resource)).read_bytes()
+    return (_common.files(package) / normalize_path(resource)).read_bytes()
 
 
 @deprecated
@@ -47,7 +60,7 @@ def open_text(
     errors: str = 'strict',
 ) -> TextIO:
     """Return a file-like object opened for text reading of the resource."""
-    return (_common.files(package) / _common.normalize_path(resource)).open(
+    return (_common.files(package) / normalize_path(resource)).open(
         'r', encoding=encoding, errors=errors
     )
 
@@ -85,7 +98,7 @@ def is_resource(package: Package, name: str) -> bool:
 
     Directories are *not* resources.
     """
-    resource = _common.normalize_path(name)
+    resource = normalize_path(name)
     return any(
         traversable.name == resource and traversable.is_file()
         for traversable in _common.files(package).iterdir()
@@ -105,4 +118,4 @@ def path(
     raised if the file was deleted prior to the context manager
     exiting).
     """
-    return _common.as_file(_common.files(package) / _common.normalize_path(resource))
+    return _common.as_file(_common.files(package) / normalize_path(resource))

importlib_resources/tests/test_contents.py

@@ -15,8 +15,8 @@ class ContentsTests:
     }
 
     def test_contents(self):
-        with util.suppress_known_deprecation():
-            assert self.expected <= set(resources.contents(self.data))
+        contents = {path.name for path in resources.files(self.data).iterdir()}
+        assert self.expected <= contents
 
 
 class ContentsDiskTests(ContentsTests, unittest.TestCase):

importlib_resources/tests/test_open.py

@@ -7,47 +7,44 @@
 
 class CommonBinaryTests(util.CommonTests, unittest.TestCase):
     def execute(self, package, path):
-        with util.suppress_known_deprecation():
-            with resources.open_binary(package, path):
-                pass
+        target = resources.files(package).joinpath(path)
+        with target.open('rb'):
+            pass
 
 
 class CommonTextTests(util.CommonTests, unittest.TestCase):
     def execute(self, package, path):
-        with util.suppress_known_deprecation():
-            with resources.open_text(package, path):
-                pass
+        target = resources.files(package).joinpath(path)
+        with target.open():
+            pass
 
 
 class OpenTests:
     def test_open_binary(self):
-        with util.suppress_known_deprecation():
-            with resources.open_binary(self.data, 'binary.file') as fp:
-                result = fp.read()
-                self.assertEqual(result, b'\x00\x01\x02\x03')
+        target = resources.files(self.data) / 'binary.file'
+        with target.open('rb') as fp:
+            result = fp.read()
+            self.assertEqual(result, b'\x00\x01\x02\x03')
 
     def test_open_text_default_encoding(self):
-        with util.suppress_known_deprecation():
-            with resources.open_text(self.data, 'utf-8.file') as fp:
-                result = fp.read()
+        target = resources.files(self.data) / 'utf-8.file'
+        with target.open() as fp:
+            result = fp.read()
             self.assertEqual(result, 'Hello, UTF-8 world!\n')
 
     def test_open_text_given_encoding(self):
-        with util.suppress_known_deprecation():
-            with resources.open_text(
-                self.data, 'utf-16.file', 'utf-16', 'strict'
-            ) as fp:
-                result = fp.read()
+        target = resources.files(self.data) / 'utf-16.file'
+        with target.open(encoding='utf-16', errors='strict') as fp:
+            result = fp.read()
         self.assertEqual(result, 'Hello, UTF-16 world!\n')
 
     def test_open_text_with_errors(self):
         # Raises UnicodeError without the 'errors' argument.
-        with util.suppress_known_deprecation():
-            with resources.open_text(self.data, 'utf-16.file', 'utf-8', 'strict') as fp:
-                self.assertRaises(UnicodeError, fp.read)
-        with util.suppress_known_deprecation():
-            with resources.open_text(self.data, 'utf-16.file', 'utf-8', 'ignore') as fp:
-                result = fp.read()
+        target = resources.files(self.data) / 'utf-16.file'
+        with target.open(encoding='utf-8', errors='strict') as fp:
+            self.assertRaises(UnicodeError, fp.read)
+        with target.open(encoding='utf-8', errors='ignore') as fp:
+            result = fp.read()
         self.assertEqual(
             result,
             'H\x00e\x00l\x00l\x00o\x00,\x00 '
@@ -56,16 +53,12 @@ def test_open_text_with_errors(self):
         )
 
     def test_open_binary_FileNotFoundError(self):
-        with util.suppress_known_deprecation():
-            self.assertRaises(
-                FileNotFoundError, resources.open_binary, self.data, 'does-not-exist'
-            )
+        target = resources.files(self.data) / 'does-not-exist'
+        self.assertRaises(FileNotFoundError, target.open, 'rb')
 
     def test_open_text_FileNotFoundError(self):
-        with util.suppress_known_deprecation():
-            self.assertRaises(
-                FileNotFoundError, resources.open_text, self.data, 'does-not-exist'
-            )
+        target = resources.files(self.data) / 'does-not-exist'
+        self.assertRaises(FileNotFoundError, target.open)
 
 
 class OpenDiskTests(OpenTests, unittest.TestCase):

importlib_resources/tests/test_path.py

@@ -8,23 +8,22 @@
 
 class CommonTests(util.CommonTests, unittest.TestCase):
     def execute(self, package, path):
-        with util.suppress_known_deprecation():
-            with resources.path(package, path):
-                pass
+        with resources.as_file(resources.files(package).joinpath(path)):
+            pass
 
 
 class PathTests:
     def test_reading(self):
         # Path should be readable.
         # Test also implicitly verifies the returned object is a pathlib.Path
         # instance.
-        with util.suppress_known_deprecation():
-            with resources.path(self.data, 'utf-8.file') as path:
-                self.assertTrue(path.name.endswith("utf-8.file"), repr(path))
-                # pathlib.Path.read_text() was introduced in Python 3.5.
-                with path.open('r', encoding='utf-8') as file:
-                    text = file.read()
-                self.assertEqual('Hello, UTF-8 world!\n', text)
+        target = resources.files(self.data) / 'utf-8.file'
+        with resources.as_file(target) as path:
+            self.assertTrue(path.name.endswith("utf-8.file"), repr(path))
+            # pathlib.Path.read_text() was introduced in Python 3.5.
+            with path.open('r', encoding='utf-8') as file:
+                text = file.read()
+            self.assertEqual('Hello, UTF-8 world!\n', text)
 
 
 class PathDiskTests(PathTests, unittest.TestCase):
@@ -36,9 +35,9 @@ def test_natural_path(self):
         file-system-backed resources do not get the tempdir
         treatment.
         """
-        with util.suppress_known_deprecation():
-            with resources.path(self.data, 'utf-8.file') as path:
-                assert 'data' in str(path)
+        target = resources.files(self.data) / 'utf-8.file'
+        with resources.as_file(target) as path:
+            assert 'data' in str(path)
 
 
 class PathMemoryTests(PathTests, unittest.TestCase):
@@ -56,9 +55,9 @@ class PathZipTests(PathTests, util.ZipSetup, unittest.TestCase):
     def test_remove_in_context_manager(self):
         # It is not an error if the file that was temporarily stashed on the
         # file system is removed inside the `with` stanza.
-        with util.suppress_known_deprecation():
-            with resources.path(self.data, 'utf-8.file') as path:
-                path.unlink()
+        target = resources.files(self.data) / 'utf-8.file'
+        with resources.as_file(target) as path:
+            path.unlink()
 
 
 if __name__ == '__main__':

importlib_resources/tests/test_read.py

@@ -8,40 +8,36 @@
 
 class CommonBinaryTests(util.CommonTests, unittest.TestCase):
     def execute(self, package, path):
-        with util.suppress_known_deprecation():
-            resources.read_binary(package, path)
+        resources.files(package).joinpath(path).read_bytes()
 
 
 class CommonTextTests(util.CommonTests, unittest.TestCase):
     def execute(self, package, path):
-        with util.suppress_known_deprecation():
-            resources.read_text(package, path)
+        resources.files(package).joinpath(path).read_text()
 
 
 class ReadTests:
-    def test_read_binary(self):
-        with util.suppress_known_deprecation():
-            result = resources.read_binary(self.data, 'binary.file')
+    def test_read_bytes(self):
+        result = resources.files(self.data).joinpath('binary.file').read_bytes()
         self.assertEqual(result, b'\0\1\2\3')
 
     def test_read_text_default_encoding(self):
-        with util.suppress_known_deprecation():
-            result = resources.read_text(self.data, 'utf-8.file')
+        result = resources.files(self.data).joinpath('utf-8.file').read_text()
         self.assertEqual(result, 'Hello, UTF-8 world!\n')
 
     def test_read_text_given_encoding(self):
-        with util.suppress_known_deprecation():
-            result = resources.read_text(self.data, 'utf-16.file', encoding='utf-16')
+        result = (
+            resources.files(self.data)
+            .joinpath('utf-16.file')
+            .read_text(encoding='utf-16')
+        )
         self.assertEqual(result, 'Hello, UTF-16 world!\n')
 
     def test_read_text_with_errors(self):
         # Raises UnicodeError without the 'errors' argument.
-        with util.suppress_known_deprecation():
-            self.assertRaises(
-                UnicodeError, resources.read_text, self.data, 'utf-16.file'
-            )
-        with util.suppress_known_deprecation():
-            result = resources.read_text(self.data, 'utf-16.file', errors='ignore')
+        target = resources.files(self.data) / 'utf-16.file'
+        self.assertRaises(UnicodeError, target.read_text, encoding='utf-8')
+        result = target.read_text(encoding='utf-8', errors='ignore')
         self.assertEqual(
             result,
             'H\x00e\x00l\x00l\x00o\x00,\x00 '
@@ -57,13 +53,15 @@ class ReadDiskTests(ReadTests, unittest.TestCase):
 class ReadZipTests(ReadTests, util.ZipSetup, unittest.TestCase):
     def test_read_submodule_resource(self):
         submodule = import_module('ziptestdata.subdirectory')
-        with util.suppress_known_deprecation():
-            result = resources.read_binary(submodule, 'binary.file')
+        result = resources.files(submodule).joinpath('binary.file').read_bytes()
         self.assertEqual(result, b'\0\1\2\3')
 
     def test_read_submodule_resource_by_name(self):
-        with util.suppress_known_deprecation():
-            result = resources.read_binary('ziptestdata.subdirectory', 'binary.file')
+        result = (
+            resources.files('ziptestdata.subdirectory')
+            .joinpath('binary.file')
+            .read_bytes()
+        )
         self.assertEqual(result, b'\0\1\2\3')