Finished

Test Name	Status
test_opening_bracket_within_property_value_doesn_t_need_to_be_escaped	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_two_nodes	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_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Pass
test_escaped_tab_in_property_value_is_converted_to_space	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_properties_without_delimiter	Pass
test_single_node_tree	Pass
test_tree_with_no_nodes	Pass
test_two_child_trees	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

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 def parse(input_string: str) -> SgfTree:
+    pass
+    """
+    Parse an SGF (Smart Game Format) string and return a tree structure of properties.
+    Args:
+        input_string: A string containing SGF formatted data
+    Returns:
+        SgfTree: A tree structure representing the SGF data
+    Raises:
+        ValueError: If the input is invalid according to SGF format rules
+    """
+    # Edge Case: Empty input or input that doesn't start with '('
+    if not input_string or not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: Input that starts with '(' but doesn't have a matching ')'
+    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 that doesn't start with ';'
+    if not content.startswith(';'):
+        raise ValueError("tree with no nodes")
+    return _parse_tree_content(content)
+def _parse_tree_content(content: str) -> SgfTree:
+    """
+    Parse the content of a tree (without the outer parentheses).
+    Args:
+        content: The content of the tree
+    Returns:
+        SgfTree: A tree structure representing the content
+    """
+    # Find the first semicolon to separate the root node from children
+    first_semicolon = content.find(';', 1)  # Start from index 1 to skip the first semicolon
+    first_paren = content.find('(', 1)
+    # Determine where the root node ends
+    if first_semicolon == -1 and first_paren == -1:
+        # No more nodes, the entire content is for the root
+        root_content = content[1:]  # Skip the first semicolon
+        children_content = ""
+    elif first_semicolon == -1:
+        # No more semicolons, but there are parentheses
+        root_content = content[1:first_paren]  # From first semicolon to first parenthesis
+        children_content = content[first_paren:]
+    elif first_paren == -1:
+        # No parentheses, but there are more semicolons
+        root_content = content[1:first_semicolon]
+        children_content = content[first_semicolon:]
+    else:
+        # Both semicolons and parentheses exist
+        root_end = min(first_semicolon, first_paren)
+        root_content = content[1:root_end]  # Skip the first semicolon
+        children_content = content[root_end:]
+    # Parse the root node's properties
+    properties = _parse_properties(root_content)
+    # Parse children if they exist
+    children = []
+    if children_content:
+        children = _parse_children(children_content)
+    return SgfTree(properties, children)
+def _parse_properties(content: str) -> dict:
+    """
+    Parse the properties of a node.
+    Args:
+        content: The content containing properties
+    Returns:
+        dict: A dictionary of properties
+    Raises:
+        ValueError: If properties are malformed
+    """
+    properties = {}
+    i = 0
+    while i < len(content):
+        # Skip whitespace
+        if content[i].isspace():
+            i += 1
+            continue
+        # Parse property 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 not key.isupper():
+            raise ValueError("property must be in uppercase")
+        # Parse values
+        values = []
+        # Edge Case: Key not followed by '['
+        if i >= len(content) or content[i] != '[':
+            raise ValueError("properties without delimiter")
+        while i < len(content) and content[i] == '[':
+            i += 1  # Skip '['
+            value_start = i
+            # Parse value, handling escapes
+            while i < len(content) and content[i] != ']':
+                if content[i] == '\\':
+                    i += 2  # Skip escape character and the escaped character
+                else:
+                    i += 1
+            # Edge Case: Unclosed value bracket
+            if i >= len(content) or content[i] != ']':
+                raise ValueError("properties without delimiter")
+            value = content[value_start:i]
+            # Process the value according to SGF Text type rules
+            processed_value = _process_sgf_text(value)
+            values.append(processed_value)
+            i += 1  # Skip ']'
+        properties[key] = values
+    return properties
+def _process_sgf_text(text: str) -> str:
+    """
+    Process text according to SGF Text type rules.
+    Args:
+        text: Raw text from SGF value
+    Returns:
+        str: Processed text
+    """
+    result = []
+    i = 0
+    while i < len(text):
+        if text[i] == '\\':
+            # Handle escape sequences
+            i += 1  # Skip the backslash
+            if i < len(text):
+                # If next character is newline, remove it
+                if text[i] == '\n':
+                    i += 1  # Skip the newline
+                else:
+                    # Any non-whitespace character after \ is inserted as-is
+                    # Any whitespace character after \ is converted per rules
+                    if text[i].isspace() and text[i] != '\n':
+                        result.append(' ')
+                    else:
+                        result.append(text[i])
+                    i += 1
+        else:
+            # Convert whitespace (except newline) to spaces
+            if text[i].isspace() and text[i] != '\n':
+                result.append(' ')
+            else:
+                result.append(text[i])
+            i += 1
+    return ''.join(result)
+def _parse_children(content: str) -> list[SgfTree]:
+    """
+    Parse children of a node.
+    Args:
+        content: The content containing children
+    Returns:
+        list[SgfTree]: A list of child trees
+    """
+    children = []
+    i = 0
+    while i < len(content):
+        if content[i] == '(':
+            # Find the matching parenthesis
+            paren_count = 1
+            start = i
+            i += 1
+            while i < len(content) and paren_count > 0:
+                if content[i] == '(':
+                    paren_count += 1
+                elif content[i] == ')':
+                    paren_count -= 1
+                i += 1
+            # Edge Case: Unmatched parenthesis
+            if paren_count != 0:
+                raise ValueError("tree missing")
+            # Parse the subtree
+            subtree_content = content[start:i]
+            children.append(parse(subtree_content))
+        else:
+            # Skip other characters
+            i += 1
+    return children
+# Handled Edge Cases: Empty input, missing opening parenthesis, missing closing parenthesis,
+# empty content after removing parentheses, content not starting with semicolon,
+# no key found, key not uppercase, key not followed by '[', unclosed value bracket,
+# unmatched parenthesis