Finished

Test Name	Status
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Fail
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Fail
test_mixing_various_kinds_of_whitespace_and_escaped_characters_in_property_value	Fail
test_upper_and_lowercase_property	Fail
test_all_lowercase_property	Pass
test_empty_input	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_escaped_tab_in_property_value_is_converted_to_space	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_parentheses_in_property_value_don_t_need_to_be_escaped	Pass
test_properties_without_delimiter	Pass
test_semicolon_in_property_value_doesn_t_need_to_be_escaped	Pass
test_single_node_tree	Pass
test_tree_with_no_nodes	Pass
test_two_child_trees	Pass
test_two_nodes	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

sourdough

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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 in SGF format
+    Returns:
+        SgfTree: The parsed SGF tree
+    Raises:
+        ValueError: If the input is invalid according to SGF format rules
+    """
+    # Edge Case: Empty input
+    if not input_string:
+        raise ValueError("tree missing")
+    # Edge Case: Missing opening parenthesis
+    if not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: Missing closing parenthesis
+    if not input_string.endswith(')'):
+        raise ValueError("tree missing")
+    # Remove the outer parentheses
+    content = input_string[1:-1]
+    # Edge Case: Empty tree with no nodes
+    if not content:
+        raise ValueError("tree with no nodes")
+    # Edge Case: Missing semicolon after opening parenthesis
+    if not content.startswith(';'):
+        raise ValueError("tree missing")
+    return _parse_tree(content)
+def _parse_tree(content: str) -> SgfTree:
+    """
+    Parse the content of a tree (without outer parentheses).
+    Args:
+        content: The content of the tree
+    Returns:
+        SgfTree: The parsed tree
+    """
+    # Skip the initial semicolon
+    if not content.startswith(';'):
+        raise ValueError("tree missing")
+    content = content[1:]
+    # Parse properties of the current node
+    properties, remaining = _parse_properties(content)
+    children = []
+    # Parse children
+    while remaining:
+        if remaining.startswith('('):
+            # Parse a subtree
+            subtree_content, remaining = _parse_subtree(remaining)
+            child = _parse_tree(subtree_content)
+            children.append(child)
+        elif remaining.startswith(';'):
+            # Parse a direct child node (shorthand notation)
+            child_content = ';'
+            remaining = remaining[1:]
+            props, remaining_props = _parse_properties(remaining)
+            # The content for this child is everything from the start of remaining up to remaining_props
+            consumed_length = len(remaining) - len(remaining_props)
+            child_content += remaining[:consumed_length]
+            remaining = remaining_props
+            child = _parse_tree(child_content)
+            children.append(child)
+        else:
+            # No more children
+            break
+    return SgfTree(properties, children)
+def _parse_properties(content: str) -> tuple[dict, str]:
+    """
+    Parse properties from the beginning of the content.
+    Args:
+        content: String content to parse properties from
+    Returns:
+        tuple: (properties dict, remaining content)
+    """
+    properties = {}
+    remaining = content
+    while remaining and remaining[0].isalpha():
+        # Check if property is uppercase
+        if not remaining[0].isupper():
+            raise ValueError("property must be in uppercase")
+        # Parse key
+        key_end = 0
+        while key_end < len(remaining) and remaining[key_end].isalpha() and remaining[key_end].isupper():
+            key_end += 1
+        # Edge Case: Key without values
+        if key_end >= len(remaining) or remaining[key_end] != '[':
+            raise ValueError("properties without delimiter")
+        key = remaining[:key_end]
+        remaining = remaining[key_end:]
+        # Parse values
+        values = []
+        while remaining.startswith('['):
+            remaining = remaining[1:]  # Skip opening bracket
+            value, remaining = _parse_value(remaining)
+            # Edge Case: Missing closing bracket
+            if not remaining.startswith(']'):
+                raise ValueError("properties without delimiter")
+            remaining = remaining[1:]  # Skip closing bracket
+            values.append(value)
+        # Edge Case: No values for property
+        if not values:
+            raise ValueError("properties without delimiter")
+        properties[key] = values
+    return properties, remaining
+def _parse_value(content: str) -> tuple[str, str]:
+    """
+    Parse a value from SGF Text type.
+    Args:
+        content: String content to parse value from
+    Returns:
+        tuple: (parsed value, remaining content)
+    """
+    value = ''
+    i = 0
+    while i < len(content) and content[i] != ']':
+        if content[i] == '\\':
+            # Handle escape character
+            i += 1
+            if i >= len(content):
+                # Edge Case: Escape at end of content
+                value += '\\'
+                break
+            char = content[i]
+            if char == '\n':
+                # Newline immediately after backslash is removed
+                pass
+            elif char.isspace():
+                # Whitespace (including tabs, spaces, etc.) after backslash follows the above rules
+                # All whitespace other than newline is converted to space
+                value += ' '
+            else:
+                # Any non-whitespace character after backslash is inserted as-is
+                # But for closing bracket, the backslash escapes it
+                if char == ']':
+                    value += ']'
+                elif char == 'n':
+                    # \n becomes actual newline character
+                    value += '\n'
+                elif char == 't':
+                    # \t becomes actual tab character
+                    value += '\t'
+                elif char == 'r':
+                    # \r becomes actual carriage return character
+                    value += '\r'
+                else:
+                    # For other characters, SGF does not have escape sequences
+                    # These are just literal backslash followed by the character
+                    value += '\\' + char
+        elif content[i] == '\n':
+            # Newlines are kept unless immediately after backslash
+            value += content[i]
+        elif content[i].isspace():
+            # All whitespace other than newline is converted to space
+            value += ' '
+        else:
+            value += content[i]
+        i += 1
+    return value, content[i:]
+def _parse_subtree(content: str) -> tuple[str, str]:
+    """
+    Parse a subtree including its parentheses.
+    Args:
+        content: String content starting with '('
+    Returns:
+        tuple: (subtree content including parentheses, remaining content)
+    """
+    # Edge Case: Not starting with '('
+    if not content.startswith('('):
+        raise ValueError("tree missing")
+    balance = 0
+    i = 0
+    for i, char in enumerate(content):
+        if char == '(':
+            balance += 1
+        elif char == ')':
+            balance -= 1
+            if balance == 0:
+                # Found the matching closing parenthesis
+                return content[1:i], content[i+1:]
+    # Edge Case: Unmatched parentheses
+    raise ValueError("tree missing")
+# Handled Edge Cases: Empty input, Missing opening parenthesis, Missing closing parenthesis, Empty tree with no nodes, Missing semicolon after opening parenthesis, Key without values, Missing closing bracket, No values for property, Escape at end of content, Unmatched parentheses
+# Handled Edge Cases: Key without values, Missing closing bracket, No values for property
+# Handled Edge Cases: Escape at end of content
+# Handled Edge Cases: Not starting with '(', Unmatched parentheses