Strip ANSI color in dub CLI-output asserts (CI forced-color failure)

CI renders CliRunner output with color, so style codes interleave inside
flag names ("--lang") and the human summary line, breaking substring
asserts that pass locally without color. Strip SGR sequences first via a
shared plain() helper, the same convention test_help_rendering and the
clip suite use.

https://claude.ai/code/session_01Mcran5xqMHcrt4RUxSHrkX

Author: claude

tests/_dub_helpers.py

@@ -8,6 +8,7 @@
 
 from __future__ import annotations
 
+import re
 import subprocess
 import wave
 from pathlib import Path
@@ -33,6 +34,14 @@
 
 SAMPLE_RATE = 100  # tiny rate keeps the timeline byte math exact and readable
 
+_ANSI_SGR = re.compile(r"\x1b\[[0-9;]*m")
+
+
+def plain(text: str) -> str:
+    """Strip SGR color codes (CI forces color on, splitting flags like --lang
+    with style sequences) for substring assertions."""
+    return _ANSI_SGR.sub("", text)
+
 
 def utterance(start, speaker, text):
     return SimpleNamespace(start=start, end=None, speaker=speaker, text=text)

tests/test_dub_command.py

@@ -12,6 +12,7 @@
 
 from aai_cli import dub_exec, llm
 from aai_cli.main import app
+from tests._dub_helpers import plain
 
 runner = CliRunner()
 
@@ -32,16 +33,17 @@ def fake_run(opts, state, *, json_mode):
 def test_lang_is_required():
     result = runner.invoke(app, ["dub", "talk.mp4"])
     assert result.exit_code == 2
-    assert "--lang" in result.output
+    assert "--lang" in plain(result.output)
 
 
 def test_production_env_is_rejected_with_sandbox_hint():
     result = runner.invoke(app, ["dub", "talk.mp4", "--lang", "de"])  # default = production
     assert result.exit_code == 2
-    assert "only available in the sandbox" in result.output
+    output = plain(result.output)
+    assert "only available in the sandbox" in output
     # The suggestion spells out the exact corrected invocation: --sandbox is a root
     # flag, so it must go before the command, not after it.
-    assert "Re-run as: assembly --sandbox dub" in result.output
+    assert "Re-run as: assembly --sandbox dub" in output
 
 
 def test_defaults_map_to_options(captured_run):

tests/test_dub_pipeline.py

@@ -27,6 +27,7 @@
     enable_sandbox,
     fake_transcript,
     patch_api_key,
+    plain,
     record_ffmpeg,
     record_synthesize,
     record_transcribe,
@@ -150,7 +151,9 @@ def test_run_dub_human_summary(
     # mid-word and these substring asserts would depend on where the break lands.
     opts = dataclasses.replace(DEFAULTS, media=str(media), out=Path("dub.de.mp4"))
     _run(opts, json_mode=False)
-    out = capsys.readouterr().out
+    # plain(): under FORCE_COLOR (CI) Rich's repr highlighter interleaves style
+    # codes inside the line ("(2 utterances" renders with the 2 colored).
+    out = plain(capsys.readouterr().out)
     assert "dub.de.mp4" in out
     assert "dubbed to German" in out
     assert "2 utterances" in out