from pyflakes import messages as m from pyflakes.checker import (FunctionScope, ClassScope, ModuleScope, Argument, FunctionDefinition, Assignment) from pyflakes.test.harness import TestCase class TestCodeSegments(TestCase): """ Tests for segments of a module """ def test_function_segment(self): self.flakes(''' def foo(): def bar(): pass ''', is_segment=True) self.flakes(''' def foo(): def bar(): x = 0 ''', m.UnusedVariable, is_segment=True) def test_class_segment(self): self.flakes(''' class Foo: class Bar: pass ''', is_segment=True) self.flakes(''' class Foo: def bar(): x = 0 ''', m.UnusedVariable, is_segment=True) def test_scope_class(self): checker = self.flakes(''' class Foo: x = 0 def bar(a, b=1, *d, **e): pass ''', is_segment=True) scopes = checker.deadScopes module_scopes = [ scope for scope in scopes if scope.__class__ is ModuleScope] class_scopes = [ scope for scope in scopes if scope.__class__ is ClassScope] function_scopes = [ scope for scope in scopes if scope.__class__ is FunctionScope] # Ensure module scope is not present because we are analysing # the inner contents of Foo self.assertEqual(len(module_scopes), 0) self.assertEqual(len(class_scopes), 1) self.assertEqual(len(function_scopes), 1) class_scope = class_scopes[0] function_scope = function_scopes[0] self.assertIsInstance(class_scope, ClassScope) self.assertIsInstance(function_scope, FunctionScope) self.assertIn('x', class_scope) self.assertIn('bar', class_scope) self.assertIn('a', function_scope) self.assertIn('b', function_scope) self.assertIn('d', function_scope) self.assertIn('e', function_scope) self.assertIsInstance(class_scope['bar'], FunctionDefinition) self.assertIsInstance(class_scope['x'], Assignment) self.assertIsInstance(function_scope['a'], Argument) self.assertIsInstance(function_scope['b'], Argument) self.assertIsInstance(function_scope['d'], Argument) self.assertIsInstance(function_scope['e'], Argument) def test_scope_function(self): checker = self.flakes(''' def foo(a, b=1, *d, **e): def bar(f, g=1, *h, **i): pass ''', is_segment=True) scopes = checker.deadScopes module_scopes = [ scope for scope in scopes if scope.__class__ is ModuleScope] function_scopes = [ scope for scope in scopes if scope.__class__ is FunctionScope] # Ensure module scope is not present because we are analysing # the inner contents of foo self.assertEqual(len(module_scopes), 0) self.assertEqual(len(function_scopes), 2) function_scope_foo = function_scopes[1] function_scope_bar = function_scopes[0] self.assertIsInstance(function_scope_foo, FunctionScope) self.assertIsInstance(function_scope_bar, FunctionScope) self.assertIn('a', function_scope_foo) self.assertIn('b', function_scope_foo) self.assertIn('d', function_scope_foo) self.assertIn('e', function_scope_foo) self.assertIn('bar', function_scope_foo) self.assertIn('f', function_scope_bar) self.assertIn('g', function_scope_bar) self.assertIn('h', function_scope_bar) self.assertIn('i', function_scope_bar) self.assertIsInstance(function_scope_foo['bar'], FunctionDefinition) self.assertIsInstance(function_scope_foo['a'], Argument) self.assertIsInstance(function_scope_foo['b'], Argument) self.assertIsInstance(function_scope_foo['d'], Argument) self.assertIsInstance(function_scope_foo['e'], Argument) self.assertIsInstance(function_scope_bar['f'], Argument) self.assertIsInstance(function_scope_bar['g'], Argument) self.assertIsInstance(function_scope_bar['h'], Argument) self.assertIsInstance(function_scope_bar['i'], Argument) def test_scope_async_function(self): self.flakes('async def foo(): pass', is_segment=True)