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py_enjoy/test_null_coalescing.py
2026-02-27 17:10:54 +08:00

65 lines
2.2 KiB
Python

#!/usr/bin/env python3.9
# -*- coding: utf-8 -*-
"""
Test null coalescing operator ?? functionality
"""
from pyenjoy.template.Engine import Engine
from pyenjoy.kit.Kv import Kv
def test_null_coalescing():
"""Test null coalescing operator"""
print("Testing null coalescing operator...")
engine = Engine.use()
# Test cases
test_cases = [
# Template, data, expected result
("#(data??'未知')", {"data": None}, "未知"),
("#(data??'未知')", {"data": "测试"}, "测试"),
("#(data??'未知')", {}, "未知"),
("#(user.name??'匿名')", {"user": {"name": "张三"}}, "张三"),
("#(user.name??'匿名')", {"user": {}}, "匿名"),
("#(user.name??'匿名')", {}, "匿名"),
# Nested null coalescing
("#(data1??data2??'默认值')", {"data1": None, "data2": None}, "默认值"),
("#(data1??data2??'默认值')", {"data1": None, "data2": "中间值"}, "中间值"),
("#(data1??data2??'默认值')", {"data1": "第一个值", "data2": "中间值"}, "第一个值"),
]
passed = 0
failed = 0
for i, (template_str, data, expected) in enumerate(test_cases):
try:
template = engine.get_template_by_string(template_str)
result = template.render_to_string(Kv(data))
if result == expected:
print(f"✓ Test {i+1}: Passed")
print(f" Template: {template_str}")
print(f" Data: {data}")
print(f" Result: {result}")
passed += 1
else:
print(f"✗ Test {i+1}: Failed")
print(f" Template: {template_str}")
print(f" Data: {data}")
print(f" Expected: {expected}")
print(f" Got: {result}")
failed += 1
except Exception as e:
print(f"✗ Test {i+1}: Error")
print(f" Template: {template_str}")
print(f" Data: {data}")
print(f" Error: {e}")
failed += 1
print()
print(f"Summary: {passed} passed, {failed} failed")
return passed == len(test_cases)
if __name__ == "__main__":
success = test_null_coalescing()
exit(0 if success else 1)