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fix: raise 400 error for invalid render format #1494

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Merged
vincentsarago merged 1 commit into from
Sep 8, 2026
Merged

fix: raise 400 error for invalid render format #1494

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11 changes: 11 additions & 0 deletions src/titiler/application/tests/routes/test_cog.py
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Original file line number Diff line number Diff line change
Expand Up @@ -443,3 +443,14 @@ def test_json_response_with_nan(rio, app):
assert response.status_code == 200
body = response.json()
assert body["values"][0] is None


@patch("rio_tiler.io.rasterio.rasterio")
def test_invalid_format(rio, app):
"""test /preview endpoint."""
rio.open = mock_rasterio_open

response = app.get(
"/cog/preview.png?url=https://myurl.com/cog.tif&bidx=1&bidx=1&bidx=1&bidx=1&rescale=0,1000&max_size=256"
)
assert response.status_code == 400
2 changes: 2 additions & 0 deletions src/titiler/core/titiler/core/errors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
InvalidBandName,
InvalidColorFormat,
InvalidExpression,
InvalidFormat,
MissingAssets,
MissingBands,
RioTilerError,
Expand Down Expand Up @@ -48,6 +49,7 @@ class BadRequestError(TilerError):
RioTilerError: status.HTTP_500_INTERNAL_SERVER_ERROR,
Exception: status.HTTP_500_INTERNAL_SERVER_ERROR,
InvalidExpression: status.HTTP_400_BAD_REQUEST,
InvalidFormat: status.HTTP_400_BAD_REQUEST,
}


Expand Down