from src.file_cache import ASTParser

def test_ast_parser_initialization() -> None:
 """Verify that ASTParser can be initialized with a language string."""
 parser = ASTParser(language="python")
 assert parser.language.name == "python"

def test_ast_parser_parse() -> None:
 """Verify that the parse method returns a tree_sitter.Tree."""
 parser = ASTParser(language="python")
 code = "def hello(): print('world')"
 tree = parser.parse(code)
 assert tree is not None
 assert tree.root_node.type == "module"

def test_ast_parser_get_skeleton_python() -> None:
 """Verify that get_skeleton replaces function bodies with '...' while preserving docstrings."""
 parser = ASTParser(language="python")
 code = '''
def complex_function(a, b):
 """This is a docstring."""
 x = a + b
 return x

class MyClass:
 def method(self):
  """Method docstring."""
  pass
'''
 skeleton = parser.get_skeleton(code)
 assert 'def complex_function(a, b):' in skeleton
 assert '"""This is a docstring."""' in skeleton
 assert '...' in skeleton
 assert 'x = a + b' not in skeleton
 assert 'class MyClass:' in skeleton
 assert 'def method(self):' in skeleton
 assert '"""Method docstring."""' in skeleton

def test_ast_parser_invalid_language() -> None:
 """Verify handling of unsupported or invalid languages."""
 # Currently ASTParser defaults to Python if language not supported or just fails tree-sitter init
 # If it's intended to raise or handle gracefully, test it here.
 pass

def test_ast_parser_get_curated_view() -> None:
 """Verify that get_curated_view preserves function bodies with @core_logic or # [HOT]."""
 parser = ASTParser(language="python")
 code = '''
def normal_func():
 print("hide me")

@core_logic
def important_func():
 print("keep me")

def hot_func():
 # [HOT]
 print("keep me too")
'''
 curated = parser.get_curated_view(code)
 assert 'print("hide me")' not in curated
 assert 'print("keep me")' in curated
 assert 'print("keep me too")' in curated
 assert '@core_logic' in curated
 assert '# [HOT]' in curated

def test_ast_parser_get_targeted_view() -> None:
 """Verify get_targeted_view includes targeted functions and dependencies."""
 parser = ASTParser(language="python")
 code = '''
import sys

def dep2():
 """Dep 2"""
 print("dep2")

def dep1():
 """Dep 1"""
 dep2()

def targeted():
 """Targeted"""
 dep1()

def unrelated():
 """Unrelated"""
 print("unrelated")

class MyClass:
 def method1(self):
  """Method 1"""
  targeted()
 def method2(self):
  """Method 2"""
  pass
'''
 # Depth 0: targeted
 # Depth 1: dep1 (called by targeted)
 # Depth 2: dep2 (called by dep1)
 view = parser.get_targeted_view(code, ["targeted"])
 assert 'def targeted():' in view
 assert '"""Targeted"""' in view
 assert 'def dep1():' in view
 assert '"""Dep 1"""' in view
 assert 'def dep2():' in view
 assert '"""Dep 2"""' in view
 assert 'def unrelated():' not in view
 assert 'class MyClass:' not in view
 assert 'import sys' in view

 # Test depth limit
 # Depth 0: MyClass.method1
 # Depth 1: targeted (called by method1)
 # Depth 2: dep1 (called by targeted)
 # Depth 3: dep2 (called by dep1) -> should be elided
 view2 = parser.get_targeted_view(code, ["MyClass.method1"])
 assert 'class MyClass:' in view2
 assert 'def method1(self):' in view2
 assert 'def targeted():' in view2
 assert 'def dep1():' in view2
 assert 'def dep2():' not in view2
 assert 'def method2(self):' not in view2