Squashed 'paste-framework/' content from commit 34e8684

git-subtree-dir: paste-framework
git-subtree-split: 34e8684c4bc3cebbe177509f42ab4ef5b5425a7a

tests/unit/test_ustr.py

@@ -0,0 +1,44 @@
+"""
+测试字符串工具。
+无外部依赖，可离线运行。
+"""
+
+import datetime
+from paste.util import ustr
+
+
+class TestUstr:
+    """字符串工具测试"""
+
+    def test_str_q_count_all_cn(self):
+        """全中文统计"""
+        assert ustr.str_q_count("中国汉字") == 4
+
+    def test_str_q_count_mixed(self):
+        """中英文混合统计"""
+        count = ustr.str_q_count("Hello中国")
+        assert count == 2  # 只有中文字符算
+
+    def test_str_q_count_empty(self):
+        """空字符串统计"""
+        assert ustr.str_q_count("") == 0
+
+    def test_str_q_count_no_cn(self):
+        """纯英文统计"""
+        assert ustr.str_q_count("HelloWorld") == 0
+
+    def test_to_datetime_standard(self):
+        """标准格式解析"""
+        result = ustr.to_datetime("2024-01-15 10:30:00", ["%Y-%m-%d %H:%M:%S"])
+        assert result is not None
+        assert isinstance(result, datetime.datetime)
+
+    def test_to_datetime_invalid(self):
+        """无效格式解析"""
+        result = ustr.to_datetime("not-a-date", ["%Y-%m-%d"])
+        assert result is None
+
+    def test_to_datetime_empty(self):
+        """空字符串解析"""
+        result = ustr.to_datetime("", ["%Y-%m-%d"])
+        assert result is None