clanker: test-veet (run)

problems/medium/valid-parentheses/tests.py

@@ -0,0 +1,51 @@
+"""Tests for valid-parentheses."""
+import pytest
+from solution import is_valid
+
+
+class TestBasicCases:
+    """Test basic functionality with typical inputs."""
+
+    def test_example_one(self):
+        """Test first example from problem description."""
+        assert is_valid("([]){}") is True
+
+    def test_example_two(self):
+        """Test second example from problem description."""
+        assert is_valid("([)]") is False
+
+    def test_example_three(self):
+        """Test third example from problem description."""
+        assert is_valid("{{") is False
+
+    def test_simple_pairs(self):
+        """Test simple matched pairs."""
+        assert is_valid("()") is True
+        assert is_valid("[]") is True
+        assert is_valid("{}") is True
+
+
+class TestEdgeCases:
+    """Test edge cases and boundary conditions."""
+
+    def test_empty_string(self):
+        """Test with empty input."""
+        assert is_valid("") is True
+
+    def test_single_bracket(self):
+        """Test with a single unmatched bracket."""
+        assert is_valid("(") is False
+        assert is_valid("]") is False
+
+    def test_deeply_nested(self):
+        """Test with deeply nested brackets."""
+        assert is_valid("{[({[]})]}") is True
+
+    def test_close_before_open(self):
+        """Test closing bracket appearing before any opener."""
+        assert is_valid(")(") is False
+
+    def test_mismatched_types(self):
+        """Test opening one type and closing another."""
+        assert is_valid("{)") is False
+        assert is_valid("[}") is False