New option to allow a progress report even when capture=no (#10755)

Author: reaperhulk

changelog/10755.feature.rst

@@ -0,0 +1 @@
+:confval:`console_output_style` now supports ``progress-even-when-capture-no`` to force the use of the progress output even when capture is disabled. This is useful in large test suites where capture may have significant performance impact.

doc/en/reference/reference.rst

@@ -1220,6 +1220,7 @@ passed multiple times. The expected format is ``name=value``. For example::
 
    * ``classic``: classic pytest output.
    * ``progress``: like classic pytest output, but with a progress indicator.
+   * ``progress-even-when-capture-no``: allows the use of the progress indicator even when ``capture=no``.
    * ``count``: like progress, but shows progress as the number of tests completed instead of a percent.
 
    The default is ``progress``, but you can fallback to ``classic`` if you prefer or

src/_pytest/terminal.py

@@ -229,7 +229,8 @@ def pytest_addoption(parser: Parser) -> None:
     parser.addini(
         "console_output_style",
         help='Console output: "classic", or with additional progress information '
-        '("progress" (percentage) | "count")',
+        '("progress" (percentage) | "count" | "progress-even-when-capture-no" (forces '
+        "progress even when capture=no)",
         default="progress",
     )
 
@@ -346,14 +347,19 @@ def __init__(self, config: Config, file: Optional[TextIO] = None) -> None:
 
     def _determine_show_progress_info(self) -> "Literal['progress', 'count', False]":
         """Return whether we should display progress information based on the current config."""
-        # do not show progress if we are not capturing output (#3038)
-        if self.config.getoption("capture", "no") == "no":
+        # do not show progress if we are not capturing output (#3038) unless explicitly
+        # overridden by progress-even-when-capture-no
+        if (
+            self.config.getoption("capture", "no") == "no"
+            and self.config.getini("console_output_style")
+            != "progress-even-when-capture-no"
+        ):
             return False
         # do not show progress if we are showing fixture setup/teardown
         if self.config.getoption("setupshow", False):
             return False
         cfg: str = self.config.getini("console_output_style")
-        if cfg == "progress":
+        if cfg == "progress" or cfg == "progress-even-when-capture-no":
             return "progress"
         elif cfg == "count":
             return "count"

testing/test_terminal.py

@@ -2213,6 +2213,24 @@ def test_capture_no(self, many_tests_files, pytester: Pytester) -> None:
         output = pytester.runpytest("--capture=no")
         output.stdout.no_fnmatch_line("*%]*")
 
+    def test_capture_no_progress_enabled(
+        self, many_tests_files, pytester: Pytester
+    ) -> None:
+        pytester.makeini(
+            """
+            [pytest]
+            console_output_style = progress-even-when-capture-no
+        """
+        )
+        output = pytester.runpytest("-s")
+        output.stdout.re_match_lines(
+            [
+                r"test_bar.py \.{10} \s+ \[ 50%\]",
+                r"test_foo.py \.{5} \s+ \[ 75%\]",
+                r"test_foobar.py \.{5} \s+ \[100%\]",
+            ]
+        )
+
 
 class TestProgressWithTeardown:
     """Ensure we show the correct percentages for tests that fail during teardown (#3088)"""