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sglang/test/registered/unit/constrained/test_utils.py
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76 lines
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Python

"""
Unit tests for sglang.srt.constrained.utils.
Test Coverage:
- is_legacy_structural_tag: legacy format detection, new format detection,
missing fields, edge cases with assertion errors.
Usage:
python -m pytest test_utils.py -v
"""
import unittest
from sglang.srt.constrained.utils import is_legacy_structural_tag
from sglang.test.ci.ci_register import register_cpu_ci
register_cpu_ci(1.0, "base-a-test-cpu")
register_cpu_ci(est_time=7, suite="base-b-test-cpu")
class TestIsLegacyStructuralTag(unittest.TestCase):
"""Test is_legacy_structural_tag function."""
def test_legacy_format_returns_true(self):
obj = {
"structures": [{"begin": "<tool>", "end": "</tool>"}],
"triggers": ["<tool>"],
}
self.assertTrue(is_legacy_structural_tag(obj))
def test_legacy_format_empty_lists(self):
obj = {"structures": [], "triggers": []}
self.assertTrue(is_legacy_structural_tag(obj))
def test_new_format_returns_false(self):
obj = {"format": {"type": "json_schema", "schema": {}}}
self.assertFalse(is_legacy_structural_tag(obj))
def test_new_format_empty_format(self):
obj = {"format": {}}
self.assertFalse(is_legacy_structural_tag(obj))
def test_legacy_missing_triggers_raises(self):
"""Legacy format requires both 'structures' and 'triggers'."""
obj = {"structures": [{"begin": "<tool>", "end": "</tool>"}]}
with self.assertRaises(AssertionError):
is_legacy_structural_tag(obj)
def test_new_format_missing_format_raises(self):
"""New format (no 'structures') requires 'format' key."""
obj = {"other_key": "value"}
with self.assertRaises(AssertionError):
is_legacy_structural_tag(obj)
def test_empty_dict_raises(self):
with self.assertRaises(AssertionError):
is_legacy_structural_tag({})
def test_structures_none_uses_new_format_path(self):
"""Explicitly None 'structures' should fall to new format check."""
obj = {"structures": None, "format": {"type": "json_schema"}}
self.assertFalse(is_legacy_structural_tag(obj))
def test_both_keys_present_legacy_wins(self):
"""When both 'structures' and 'format' present, 'structures' takes priority."""
obj = {
"structures": [{"begin": "<tool>"}],
"triggers": ["<tool>"],
"format": {"type": "json_schema"},
}
self.assertTrue(is_legacy_structural_tag(obj))
if __name__ == "__main__":
unittest.main()