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2026-04-20 10:43:30 +02:00
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"""
Tests for issue #266 — provider/model mismatch warning.
Covers:
1. streaming.py: auth errors detected and classified as 'auth_mismatch'
2. static/ui.js: _checkProviderMismatch() helper exists and logic is correct
3. static/messages.js: apperror handler has auth_mismatch branch
4. static/i18n.js: provider_mismatch_warning and provider_mismatch_label keys
present in all locales (en, es, de, ru, zh, zh-Hant)
5. static/boot.js: modelSelect.onchange calls _checkProviderMismatch
6. /api/models: response includes active_provider field
"""
import json
import pathlib
import re
import urllib.request
REPO_ROOT = pathlib.Path(__file__).parent.parent.resolve()
from tests._pytest_port import BASE
def _read(rel_path: str) -> str:
return (REPO_ROOT / rel_path).read_text(encoding="utf-8")
# ── 1. streaming.py: auth error detection ───────────────────────────────────
class TestStreamingAuthErrorDetection:
"""streaming.py must classify auth/401 errors as auth_mismatch."""
def test_auth_mismatch_type_defined_in_streaming(self):
"""'auth_mismatch' type must be emitted for auth errors."""
src = _read("api/streaming.py")
assert "auth_mismatch" in src, (
"auth_mismatch type not found in streaming.py — "
"401/auth errors will not be surfaced with a helpful message"
)
def test_is_auth_error_flag_defined(self):
"""is_auth_error variable must exist in the error handler."""
src = _read("api/streaming.py")
assert "is_auth_error" in src, (
"is_auth_error flag not found in streaming.py"
)
def test_auth_error_detects_401(self):
"""'401' must be part of the auth error detection logic."""
src = _read("api/streaming.py")
# Find the is_auth_error block
idx = src.find("is_auth_error")
assert idx != -1
block = src[idx:idx + 400]
assert "'401'" in block or '"401"' in block, (
"'401' not in is_auth_error detection block"
)
def test_auth_error_detects_unauthorized(self):
"""'unauthorized' must be part of the auth error detection logic."""
src = _read("api/streaming.py")
idx = src.find("is_auth_error")
block = src[idx:idx + 400]
assert "unauthorized" in block.lower(), (
"'unauthorized' not in is_auth_error detection block"
)
def test_auth_error_hint_mentions_hermes_model(self):
"""The auth_mismatch hint must mention 'hermes model' command."""
src = _read("api/streaming.py")
# Find the auth_mismatch apperror block
idx = src.find("auth_mismatch")
block = src[idx:idx + 500]
assert "hermes model" in block, (
"auth_mismatch hint must mention 'hermes model' command "
"so users know how to fix provider mismatch"
)
def test_auth_error_does_not_catch_rate_limit(self):
"""Rate limit errors must not be reclassified as auth_mismatch."""
src = _read("api/streaming.py")
# is_rate_limit must come before is_auth_error in the elif chain
rl_idx = src.find("is_rate_limit")
ae_idx = src.find("is_auth_error")
assert rl_idx < ae_idx, (
"is_rate_limit check should precede is_auth_error — "
"rate limit errors must not be mistaken for auth errors"
)
# ── 2. static/ui.js: _checkProviderMismatch() ───────────────────────────────
class TestCheckProviderMismatch:
"""ui.js must expose _checkProviderMismatch() helper."""
def test_function_defined(self):
"""_checkProviderMismatch function must be defined in ui.js."""
src = _read("static/ui.js")
assert "function _checkProviderMismatch" in src, (
"_checkProviderMismatch not defined in ui.js"
)
def test_uses_window_active_provider(self):
"""Function must read window._activeProvider."""
src = _read("static/ui.js")
idx = src.find("function _checkProviderMismatch")
block = src[idx:idx + 800]
assert "_activeProvider" in block, (
"_checkProviderMismatch must read window._activeProvider"
)
def test_skips_check_for_openrouter(self):
"""OpenRouter can route to any provider — skip the warning."""
src = _read("static/ui.js")
idx = src.find("function _checkProviderMismatch")
block = src[idx:idx + 800]
assert "openrouter" in block.lower(), (
"_checkProviderMismatch must skip the check for openrouter"
)
def test_skips_check_for_custom(self):
"""Custom endpoints can serve any model — skip the warning."""
src = _read("static/ui.js")
idx = src.find("function _checkProviderMismatch")
block = src[idx:idx + 800]
assert "custom" in block.lower(), (
"_checkProviderMismatch must skip the check for custom provider"
)
def test_active_provider_stored_on_model_load(self):
"""populateModelDropdown must store active_provider from /api/models."""
src = _read("static/ui.js")
# Find the function definition (skip the comment that also mentions the name)
idx = src.find("async function populateModelDropdown")
assert idx != -1, "async function populateModelDropdown not found"
block = src[idx:idx + 800]
assert "_activeProvider" in block, (
"populateModelDropdown must set window._activeProvider "
"from the /api/models response"
)
# ── 3. static/messages.js: apperror handler ─────────────────────────────────
class TestApperrorHandler:
"""messages.js apperror handler must handle auth_mismatch type."""
def test_auth_mismatch_type_handled(self):
"""apperror handler must check for type='auth_mismatch'."""
src = _read("static/messages.js")
assert "auth_mismatch" in src, (
"auth_mismatch type not handled in messages.js apperror handler"
)
def test_provider_mismatch_label(self):
"""'Provider mismatch' label must appear in the error handling."""
src = _read("static/messages.js")
assert "Provider mismatch" in src, (
"'Provider mismatch' label not found in messages.js"
)
def test_is_auth_mismatch_variable(self):
"""isAuthMismatch variable must be defined."""
src = _read("static/messages.js")
assert "isAuthMismatch" in src, (
"isAuthMismatch variable not found in messages.js apperror handler"
)
# ── 4. static/i18n.js: all locales ───────────────────────────────────────────
class TestI18nProviderMismatch:
"""All locales must have provider_mismatch_warning and provider_mismatch_label."""
REQUIRED_KEYS = ["provider_mismatch_warning", "provider_mismatch_label"]
def _locale_names(self, src: str) -> list[str]:
pattern = re.compile(
r"^\s{2}(?:'(?P<quoted>[A-Za-z0-9-]+)'|(?P<plain>[A-Za-z0-9-]+))\s*:\s*\{",
re.MULTILINE,
)
names = []
for match in pattern.finditer(src):
names.append(match.group("quoted") or match.group("plain"))
return names
def _count_key(self, src: str, key: str) -> int:
return len(re.findall(r'\b' + re.escape(key) + r'\b', src))
def test_all_locales_have_warning_key(self):
"""provider_mismatch_warning must appear in all locales."""
src = _read("static/i18n.js")
locale_count = len(self._locale_names(src))
count = self._count_key(src, "provider_mismatch_warning")
assert count >= locale_count, (
f"provider_mismatch_warning found {count} times, expected >= {locale_count} "
f"(one per locale)"
)
def test_all_locales_have_label_key(self):
"""provider_mismatch_label must appear in all locales."""
src = _read("static/i18n.js")
locale_count = len(self._locale_names(src))
count = self._count_key(src, "provider_mismatch_label")
assert count >= locale_count, (
f"provider_mismatch_label found {count} times, expected >= {locale_count}"
)
def test_warning_is_function_in_en(self):
"""English provider_mismatch_warning must be a function (m, p) => ..."""
src = _read("static/i18n.js")
# Find the en block
en_start = src.find("\n en: {")
es_start = src.find("\n es: {")
en_block = src[en_start:es_start]
assert "provider_mismatch_warning" in en_block, "Key not in en block"
idx = en_block.find("provider_mismatch_warning")
line = en_block[idx:idx + 200]
# Must be a function, not a plain string
assert "=>" in line, (
"provider_mismatch_warning in en locale must be an arrow function "
"that takes (m, p) parameters for model and provider interpolation"
)
def test_spanish_locale_key_coverage(self):
"""Spanish locale must have the new keys (parity with English)."""
src = _read("static/i18n.js")
es_start = src.find("\n es: {")
de_start = src.find("\n de: {")
es_block = src[es_start:de_start]
for key in self.REQUIRED_KEYS:
assert key in es_block, f"Key '{key}' missing from Spanish locale"
# ── 5. static/boot.js: dropdown change handler ──────────────────────────────
class TestBootModelSelectChange:
"""boot.js modelSelect.onchange must call _checkProviderMismatch."""
def test_onchange_calls_check_function(self):
"""modelSelect.onchange must invoke _checkProviderMismatch."""
src = _read("static/boot.js")
assert "_checkProviderMismatch" in src, (
"boot.js modelSelect.onchange must call _checkProviderMismatch "
"to warn users about provider/model mismatches"
)
# Verify it's called from the onchange handler (near modelSelect.onchange)
idx = src.find("'modelSelect').onchange") or src.find('"modelSelect").onchange')
if idx == -1:
# Try alternate patterns
idx = src.find("modelSelect")
block_start = src.rfind("\n", 0, src.find("_checkProviderMismatch")) or 0
surrounding = src[max(0, block_start - 200):block_start + 400]
assert "modelSelect" in surrounding or "selectedModel" in surrounding, (
"_checkProviderMismatch must be called in the context of model selection"
)
def test_onchange_shows_toast_on_mismatch(self):
"""The warning must be shown via showToast, not alert()."""
src = _read("static/boot.js")
# Both _checkProviderMismatch call and showToast must be near each other
idx = src.find("_checkProviderMismatch")
assert idx != -1, "_checkProviderMismatch not found in boot.js"
block = src[idx:idx + 300]
assert "showToast" in block, (
"Provider mismatch warning must be shown via showToast(), not alert()"
)
# ── 6. /api/models: active_provider in response ──────────────────────────────
def test_api_models_includes_active_provider():
"""/api/models must include 'active_provider' key in response."""
with urllib.request.urlopen(BASE + "/api/models", timeout=10) as r:
data = json.loads(r.read())
# active_provider can be None/null but the key must exist
assert "active_provider" in data, (
"/api/models response missing 'active_provider' field — "
"frontend needs this to detect provider mismatches"
)
# ── Model switch toast (#419) ─────────────────────────────────────────────────
class TestModelSwitchToast:
"""Toast appears when user switches model during an active session."""
def test_toast_in_model_select_onchange(self):
"""modelSelect.onchange must show a toast when S.messages is non-empty."""
src = _read("static/boot.js")
# Find the onchange block
idx = src.find("modelSelect').onchange")
assert idx != -1, "modelSelect.onchange not found in boot.js"
block = src[idx:idx + 1100]
assert "Model change takes effect in your next conversation" in block, (
"modelSelect.onchange must show a toast when switching model mid-session"
)
def test_toast_guards_on_messages_length(self):
"""Toast must only fire when there are existing messages (active session)."""
src = _read("static/boot.js")
idx = src.find("Model change takes effect in your next conversation")
assert idx != -1
# Look back 200 chars for the S.messages guard
surrounding = src[max(0, idx - 200):idx + 50]
assert "S.messages" in surrounding and ".length" in surrounding, (
"Model switch toast must be gated on S.messages.length > 0"
)
def test_toast_uses_show_toast_not_alert(self):
"""Toast must use showToast(), not alert()."""
src = _read("static/boot.js")
idx = src.find("Model change takes effect in your next conversation")
assert idx != -1
surrounding = src[max(0, idx - 50):idx + 100]
assert "showToast" in surrounding, "Must use showToast() not alert()"
assert "alert(" not in surrounding, "Must not use alert()"
def test_toast_has_typeof_showtoast_guard(self):
"""Toast call must guard typeof showToast to be safe during boot."""
src = _read("static/boot.js")
idx = src.find("Model change takes effect in your next conversation")
assert idx != -1
surrounding = src[max(0, idx - 100):idx + 50]
assert "typeof showToast" in surrounding, (
"showToast call must be guarded with typeof check"
)