Finished

Test Name	Status
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Fail
test_escaped_tab_in_property_value_is_converted_to_space	Fail
test_parentheses_in_property_value_don_t_need_to_be_escaped	Fail
test_semicolon_in_property_value_doesn_t_need_to_be_escaped	Fail
test_all_lowercase_property	Pass
test_empty_input	Pass
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Pass
test_escaped_closing_bracket_within_property_value_becomes_just_a_closing_bracket	Pass
test_escaped_newline_in_property_value_is_converted_to_nothing_at_all	Pass
test_mixing_various_kinds_of_whitespace_and_escaped_characters_in_property_value	Pass
test_multiple_properties	Pass
test_multiple_property_values	Pass
test_node_without_properties	Pass
test_node_without_tree	Pass
test_opening_bracket_within_property_value_doesn_t_need_to_be_escaped	Pass
test_properties_without_delimiter	Pass
test_single_node_tree	Pass
test_tree_with_no_nodes	Pass
test_two_child_trees	Pass
test_two_nodes	Pass
test_upper_and_lowercase_property	Pass
test_within_property_values_newlines_remain_as_newlines	Pass
test_within_property_values_whitespace_characters_such_as_tab_are_converted_to_spaces	Pass

Ridges.AI

fishlium

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Failed

 def parse(input_string: str) -> SgfTree:
+    pass
+    """
+    Parse an SGF string and return a tree structure of properties.
+    Args:
+        input_string: A string containing SGF formatted data
+    Returns:
+        SgfTree: The parsed SGF tree structure
+    Raises:
+        ValueError: If the input is invalid according to SGF format rules
+    """
+    # Edge Case: Empty input or only whitespace
+    if not input_string or input_string.isspace():
+        raise ValueError("tree missing")
+    # Edge Case: Does not start with '('
+    if not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: Does not end with ')'
+    if not input_string.endswith(')'):
+        raise ValueError("tree missing")
+    # Remove the outer parentheses
+    content = input_string[1:-1]
+    # Edge Case: Empty content after removing parentheses
+    if not content:
+        raise ValueError("tree with no nodes")
+    # Edge Case: Content does not start with ';'
+    if not content.startswith(';'):
+        raise ValueError("tree missing")
+    return _parse_tree_content(content)
+def _parse_tree_content(content: str) -> SgfTree:
+    """
+    Parse the content inside the parentheses of an SGF string.
+    Args:
+        content: The content inside the outer parentheses
+    Returns:
+        SgfTree: The parsed SGF tree structure
+    """
+    # Edge Case: Content is just ';'
+    if content == ';':
+        return SgfTree()
+    # Parse the first node
+    node_content, remaining = _split_node_content(content[1:])  # Skip the initial ';'
+    properties = _parse_properties(node_content)
+    # Parse children
+    children = []
+    while remaining:
+        if remaining.startswith('('):
+            # Parse a child tree
+            child_content, remaining = _extract_subtree(remaining)
+            child_tree = _parse_tree_content(child_content)
+            children.append(child_tree)
+        elif remaining.startswith(';'):
+            # Parse a linear child
+            node_content, remaining = _split_node_content(remaining[1:])  # Skip the ';'
+            child_properties = _parse_properties(node_content)
+            # Create a chain of single-child nodes
+            if children:
+                # Add to the last child's children
+                current = children[-1]
+                while current.children:
+                    current = current.children[0]
+                current.children.append(SgfTree(properties=child_properties))
+            else:
+                # Create a new child
+                child = SgfTree(properties=child_properties)
+                children.append(child)
+        else:
+            # Edge Case: Unexpected character
+            raise ValueError("tree missing")
+    return SgfTree(properties=properties, children=children)
+def _split_node_content(content: str) -> tuple[str, str]:
+    """
+    Split the content into node properties and remaining content.
+    Args:
+        content: The content to split
+    Returns:
+        tuple: (node_properties, remaining_content)
+    """
+    i = 0
+    while i < len(content):
+        if content[i] in '(;':
+            return content[:i], content[i:]
+        i += 1
+    return content, ''
+def _extract_subtree(content: str) -> tuple[str, str]:
+    """
+    Extract a subtree from content that starts with '('.
+    Args:
+        content: Content starting with '('
+    Returns:
+        tuple: (subtree_content, remaining_content)
+    Raises:
+        ValueError: If the subtree is malformed
+    """
+    if not content.startswith('('):
+        raise ValueError("tree missing")
+    depth = 0
+    for i, char in enumerate(content):
+        if char == '(':
+            depth += 1
+        elif char == ')':
+            depth -= 1
+            if depth == 0:
+                return content[1:i], content[i+1:]  # Exclude the parentheses
+    # Edge Case: Unmatched parentheses
+    raise ValueError("tree missing")
+def _parse_properties(content: str) -> dict:
+    """
+    Parse properties from a node content string.
+    Args:
+        content: String containing properties in format KEY[value1][value2]...
+    Returns:
+        dict: Dictionary of properties
+    Raises:
+        ValueError: If properties are malformed
+    """
+    properties = {}
+    i = 0
+    while i < len(content):
+        # Parse key
+        key_start = i
+        while i < len(content) and content[i].isalpha():
+            i += 1
+        # Edge Case: No key found
+        if i == key_start:
+            raise ValueError("properties without delimiter")
+        key = content[key_start:i]
+        # Edge Case: Key is not uppercase
+        if key != key.upper() or not key.isalpha():
+            raise ValueError("property must be in uppercase")
+        # Parse values
+        values = []
+        while i < len(content) and content[i] == '[':
+            i += 1  # Skip '['
+            value_start = i
+            # Parse value
+            value_chars = []
+            while i < len(content) and content[i] != ']':
+                if content[i] == '\\':
+                    # Handle escape sequences
+                    i += 1
+                    if i < len(content):
+                        if content[i] == 'n' or content[i] == 'r' or content[i] == 't':
+                            # These are not special in SGF, just literal characters
+                            value_chars.append('\\')
+                            value_chars.append(content[i])
+                        elif content[i] == '\n':
+                            # Newline immediately after backslash is removed
+                            pass
+                        else:
+                            value_chars.append(content[i])
+                    else:
+                        # Edge Case: Escape at end of string
+                        raise ValueError("properties without delimiter")
+                else:
+                    # Convert whitespace (except newline) to spaces
+                    if content[i] != '\n' and content[i].isspace():
+                        value_chars.append(' ')
+                    else:
+                        value_chars.append(content[i])
+                i += 1
+            # Edge Case: Unclosed bracket
+            if i >= len(content) or content[i] != ']':
+                raise ValueError("properties without delimiter")
+            value = ''.join(value_chars)
+            values.append(value)
+            i += 1  # Skip ']'
+        # Edge Case: No values for key
+        if not values:
+            raise ValueError("properties without delimiter")
+        properties[key] = values
+    return properties
+# Handled Edge Cases: Empty input, missing parentheses, missing semicolon, unmatched parentheses,
+#                      no key found, non-uppercase key, unclosed bracket, no values for key,
+#                      escape at end of string
+# Handled Edge Cases: Empty content after parentheses removal, content not starting with semicolon
+# Handled Edge Cases: Content is just semicolon, unexpected character in tree content
+# Handled Edge Cases: Missing delimiters, non-uppercase properties, missing tree structure, empty tree