Refactor Capture classes: move/rename CaptureIO classes

src/_pytest/capture.py

@@ -11,10 +11,9 @@
 from tempfile import TemporaryFile
 from typing import Generator
 from typing import Optional
+from typing import TextIO
 
 import pytest
-from _pytest.compat import CaptureAndPassthroughIO
-from _pytest.compat import CaptureIO
 from _pytest.compat import TYPE_CHECKING
 from _pytest.config import Config
 from _pytest.fixtures import FixtureRequest
@@ -320,6 +319,25 @@ def capfdbinary(request):
         yield fixture
 
 
+class CaptureIO(io.TextIOWrapper):
+    def __init__(self) -> None:
+        super().__init__(io.BytesIO(), encoding="UTF-8", newline="", write_through=True)
+
+    def getvalue(self) -> str:
+        assert isinstance(self.buffer, io.BytesIO)
+        return self.buffer.getvalue().decode("UTF-8")
+
+
+class TeeCaptureIO(CaptureIO):
+    def __init__(self, other: TextIO) -> None:
+        self._other = other
+        super().__init__()
+
+    def write(self, s: str) -> int:
+        super().write(s)
+        return self._other.write(s)
+
+
 class CaptureFixture:
     """
     Object returned by :py:func:`capsys`, :py:func:`capsysbinary`, :py:func:`capfd` and :py:func:`capfdbinary`
@@ -673,7 +691,7 @@ def __init__(self, fd, tmpfile=None):
             if name == "stdin":
                 tmpfile = DontReadFromInput()
             else:
-                tmpfile = CaptureAndPassthroughIO(self._old)
+                tmpfile = TeeCaptureIO(self._old)
         self.tmpfile = tmpfile
 
 

src/_pytest/compat.py

@@ -3,7 +3,6 @@
 """
 import functools
 import inspect
-import io
 import os
 import re
 import sys
@@ -13,7 +12,6 @@
 from typing import Any
 from typing import Callable
 from typing import Generic
-from typing import IO
 from typing import Optional
 from typing import overload
 from typing import Tuple
@@ -343,25 +341,6 @@ def safe_isclass(obj: object) -> bool:
         return False
 
 
-class CaptureIO(io.TextIOWrapper):
-    def __init__(self) -> None:
-        super().__init__(io.BytesIO(), encoding="UTF-8", newline="", write_through=True)
-
-    def getvalue(self) -> str:
-        assert isinstance(self.buffer, io.BytesIO)
-        return self.buffer.getvalue().decode("UTF-8")
-
-
-class CaptureAndPassthroughIO(CaptureIO):
-    def __init__(self, other: IO) -> None:
-        self._other = other
-        super().__init__()
-
-    def write(self, s) -> int:
-        super().write(s)
-        return self._other.write(s)
-
-
 if sys.version_info < (3, 5, 2):
 
     def overload(f):  # noqa: F811

testing/test_capture.py

@@ -804,10 +804,10 @@ def test_write_bytes_to_buffer(self):
         assert f.getvalue() == "foo\r\n"
 
 
-class TestCaptureAndPassthroughIO(TestCaptureIO):
+class TestTeeCaptureIO(TestCaptureIO):
     def test_text(self):
         sio = io.StringIO()
-        f = capture.CaptureAndPassthroughIO(sio)
+        f = capture.TeeCaptureIO(sio)
         f.write("hello")
         s1 = f.getvalue()
         assert s1 == "hello"
@@ -818,7 +818,7 @@ def test_text(self):
 
     def test_unicode_and_str_mixture(self):
         sio = io.StringIO()
-        f = capture.CaptureAndPassthroughIO(sio)
+        f = capture.TeeCaptureIO(sio)
         f.write("\u00f6")
         pytest.raises(TypeError, f.write, b"hello")