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test_visitor.py
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1055 lines (931 loc) · 42.1 KB
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from graphql.language.ast import (Document, Field, Name, OperationDefinition,
SelectionSet)
from graphql.language.parser import parse
from graphql.language.printer import print_ast
from graphql.language.visitor import (BREAK, REMOVE, ParallelVisitor,
TypeInfoVisitor, Visitor, visit)
from graphql.type import get_named_type, is_composite_type
from graphql.utils.type_info import TypeInfo
from ...validation.tests.utils import test_schema
from .fixtures import KITCHEN_SINK
def test_allows_editing_a_node_both_on_enter_and_on_leave():
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
class TestVisitor(Visitor):
def __init__(self):
self.did_enter = False
self.did_leave = False
def enter(self, node, *args):
if isinstance(node, OperationDefinition):
self.did_enter = True
selection_set = node.selection_set
self.selections = None
if selection_set:
self.selections = selection_set.selections
new_selection_set = SelectionSet(
selections=[])
return OperationDefinition(
name=node.name,
variable_definitions=node.variable_definitions,
directives=node.directives,
loc=node.loc,
operation=node.operation,
selection_set=new_selection_set)
def leave(self, node, *args):
if isinstance(node, OperationDefinition):
self.did_leave = True
new_selection_set = None
if self.selections:
new_selection_set = SelectionSet(
selections=self.selections)
return OperationDefinition(
name=node.name,
variable_definitions=node.variable_definitions,
directives=node.directives,
loc=node.loc,
operation=node.operation,
selection_set=new_selection_set)
visitor = TestVisitor()
edited_ast = visit(ast, visitor)
assert ast == parse('{ a, b, c { a, b, c } }', no_location=True)
assert edited_ast == ast
assert visitor.did_enter
assert visitor.did_leave
def test_allows_editing_the_root_node_on_enter_and_on_leave():
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
definitions = ast.definitions
class TestVisitor(Visitor):
def __init__(self):
self.did_enter = False
self.did_leave = False
def enter(self, node, *args):
if isinstance(node, Document):
self.did_enter = True
return Document(
loc=node.loc,
definitions=[])
def leave(self, node, *args):
if isinstance(node, Document):
self.did_leave = True
return Document(
loc=node.loc,
definitions=definitions)
visitor = TestVisitor()
edited_ast = visit(ast, visitor)
assert edited_ast == ast
assert visitor.did_enter
assert visitor.did_leave
def test_allows_for_editing_on_enter():
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
class TestVisitor(Visitor):
def enter(self, node, *args):
if isinstance(node, Field) and node.name.value == 'b':
return REMOVE
edited_ast = visit(ast, TestVisitor())
assert ast == parse('{ a, b, c { a, b, c } }', no_location=True)
assert edited_ast == parse('{ a, c { a, c } }', no_location=True)
def test_allows_for_editing_on_leave():
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
class TestVisitor(Visitor):
def leave(self, node, *args):
if isinstance(node, Field) and node.name.value == 'b':
return REMOVE
edited_ast = visit(ast, TestVisitor())
assert ast == parse('{ a, b, c { a, b, c } }', no_location=True)
assert edited_ast == parse('{ a, c { a, c } }', no_location=True)
def test_visits_edited_node():
added_field = Field(name=Name(value='__typename'))
ast = parse('{ a { x } }')
class TestVisitor(Visitor):
def __init__(self):
self.did_visit_added_field = False
def enter(self, node, *args):
if isinstance(node, Field) and node.name.value == 'a':
selection_set = node.selection_set
selections = []
if selection_set:
selections = selection_set.selections
new_selection_set = SelectionSet(
selections=[added_field] + selections)
return Field(name=None, selection_set=new_selection_set)
if node is added_field:
self.did_visit_added_field = True
visitor = TestVisitor()
visit(ast, visitor)
assert visitor.did_visit_added_field
def test_allows_skipping_a_subtree():
visited = []
ast = parse('{ a, b { x }, c }')
class TestVisitor(Visitor):
def enter(self, node, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
if isinstance(node, Field) and node.name.value == 'b':
return False
def leave(self, node, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
visit(ast, TestVisitor())
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'OperationDefinition', None],
['leave', 'Document', None],
]
def test_allows_early_exit_while_visiting():
visited = []
ast = parse('{ a, b { x }, c }')
class TestVisitor(Visitor):
def enter(self, node, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
if isinstance(node, Name) and node.value == 'x':
return BREAK
def leave(self, node, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
visit(ast, TestVisitor())
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'b'],
['leave', 'Name', 'b'],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'x'],
]
def test_allows_a_named_functions_visitor_api():
visited = []
ast = parse('{ a, b { x }, c }')
class TestVisitor(Visitor):
def enter_Name(self, node, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
def enter_SelectionSet(self, node, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
def leave_SelectionSet(self, node, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
visit(ast, TestVisitor())
assert visited == [
['enter', 'SelectionSet', None],
['enter', 'Name', 'a'],
['enter', 'Name', 'b'],
['enter', 'SelectionSet', None],
['enter', 'Name', 'x'],
['leave', 'SelectionSet', None],
['enter', 'Name', 'c'],
['leave', 'SelectionSet', None],
]
def test_visits_kitchen_sink():
visited = []
ast = parse(KITCHEN_SINK)
class TestVisitor(Visitor):
def enter(self, node, key, parent, *args):
kind = parent and type(parent).__name__
if kind == 'list':
kind = None
visited.append(['enter', type(node).__name__, key, kind])
def leave(self, node, key, parent, *args):
kind = parent and type(parent).__name__
if kind == 'list':
kind = None
visited.append(['leave', type(node).__name__, key, kind])
visit(ast, TestVisitor())
assert visited == [
['enter', 'Document', None, None],
['enter', 'OperationDefinition', 0, None],
['enter', 'Name', 'name', 'OperationDefinition'],
['leave', 'Name', 'name', 'OperationDefinition'],
['enter', 'VariableDefinition', 0, None],
['enter', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'NamedType', 'type', 'VariableDefinition'],
['enter', 'Name', 'name', 'NamedType'],
['leave', 'Name', 'name', 'NamedType'],
['leave', 'NamedType', 'type', 'VariableDefinition'],
['leave', 'VariableDefinition', 0, None],
['enter', 'VariableDefinition', 1, None],
['enter', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'NamedType', 'type', 'VariableDefinition'],
['enter', 'Name', 'name', 'NamedType'],
['leave', 'Name', 'name', 'NamedType'],
['leave', 'NamedType', 'type', 'VariableDefinition'],
['enter', 'EnumValue', 'default_value', 'VariableDefinition'],
['leave', 'EnumValue', 'default_value', 'VariableDefinition'],
['leave', 'VariableDefinition', 1, None],
['enter', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['enter', 'Field', 0, None],
['enter', 'Name', 'alias', 'Field'],
['leave', 'Name', 'alias', 'Field'],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'ListValue', 'value', 'Argument'],
['enter', 'IntValue', 0, None],
['leave', 'IntValue', 0, None],
['enter', 'IntValue', 1, None],
['leave', 'IntValue', 1, None],
['leave', 'ListValue', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['enter', 'InlineFragment', 1, None],
['enter', 'NamedType', 'type_condition', 'InlineFragment'],
['enter', 'Name', 'name', 'NamedType'],
['leave', 'Name', 'name', 'NamedType'],
['leave', 'NamedType', 'type_condition', 'InlineFragment'],
['enter', 'Directive', 0, None],
['enter', 'Name', 'name', 'Directive'],
['leave', 'Name', 'name', 'Directive'],
['leave', 'Directive', 0, None],
['enter', 'SelectionSet', 'selection_set', 'InlineFragment'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['enter', 'Field', 1, None],
['enter', 'Name', 'alias', 'Field'],
['leave', 'Name', 'alias', 'Field'],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'IntValue', 'value', 'Argument'],
['leave', 'IntValue', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'Argument', 1, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 1, None],
['enter', 'Directive', 0, None],
['enter', 'Name', 'name', 'Directive'],
['leave', 'Name', 'name', 'Directive'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['leave', 'Directive', 0, None],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['enter', 'FragmentSpread', 1, None],
['enter', 'Name', 'name', 'FragmentSpread'],
['leave', 'Name', 'name', 'FragmentSpread'],
['leave', 'FragmentSpread', 1, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 1, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'InlineFragment'],
['leave', 'InlineFragment', 1, None],
['enter', 'InlineFragment', 2, None],
['enter', 'Directive', 0, None],
['enter', 'Name', 'name', 'Directive'],
['leave', 'Name', 'name', 'Directive'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['leave', 'Directive', 0, None],
['enter', 'SelectionSet', 'selection_set', 'InlineFragment'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'InlineFragment'],
['leave', 'InlineFragment', 2, None],
['enter', 'InlineFragment', 3, None],
['enter', 'SelectionSet', 'selection_set', 'InlineFragment'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'InlineFragment'],
['leave', 'InlineFragment', 3, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['leave', 'OperationDefinition', 0, None],
['enter', 'OperationDefinition', 1, None],
['enter', 'Name', 'name', 'OperationDefinition'],
['leave', 'Name', 'name', 'OperationDefinition'],
['enter', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'IntValue', 'value', 'Argument'],
['leave', 'IntValue', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'Directive', 0, None],
['enter', 'Name', 'name', 'Directive'],
['leave', 'Name', 'name', 'Directive'],
['leave', 'Directive', 0, None],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['leave', 'OperationDefinition', 1, None],
['enter', 'OperationDefinition', 2, None],
['enter', 'Name', 'name', 'OperationDefinition'],
['leave', 'Name', 'name', 'OperationDefinition'],
['enter', 'VariableDefinition', 0, None],
['enter', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'variable', 'VariableDefinition'],
['enter', 'NamedType', 'type', 'VariableDefinition'],
['enter', 'Name', 'name', 'NamedType'],
['leave', 'Name', 'name', 'NamedType'],
['leave', 'NamedType', 'type', 'VariableDefinition'],
['leave', 'VariableDefinition', 0, None],
['enter', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['enter', 'Field', 1, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'SelectionSet', 'selection_set', 'Field'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 1, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'Field'],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['leave', 'OperationDefinition', 2, None],
['enter', 'FragmentDefinition', 3, None],
['enter', 'Name', 'name', 'FragmentDefinition'],
['leave', 'Name', 'name', 'FragmentDefinition'],
['enter', 'NamedType', 'type_condition', 'FragmentDefinition'],
['enter', 'Name', 'name', 'NamedType'],
['leave', 'Name', 'name', 'NamedType'],
['leave', 'NamedType', 'type_condition', 'FragmentDefinition'],
['enter', 'SelectionSet', 'selection_set', 'FragmentDefinition'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'Argument', 1, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'Variable', 'value', 'Argument'],
['enter', 'Name', 'name', 'Variable'],
['leave', 'Name', 'name', 'Variable'],
['leave', 'Variable', 'value', 'Argument'],
['leave', 'Argument', 1, None],
['enter', 'Argument', 2, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'ObjectValue', 'value', 'Argument'],
['enter', 'ObjectField', 0, None],
['enter', 'Name', 'name', 'ObjectField'],
['leave', 'Name', 'name', 'ObjectField'],
['enter', 'StringValue', 'value', 'ObjectField'],
['leave', 'StringValue', 'value', 'ObjectField'],
['leave', 'ObjectField', 0, None],
['leave', 'ObjectValue', 'value', 'Argument'],
['leave', 'Argument', 2, None],
['leave', 'Field', 0, None],
['leave', 'SelectionSet', 'selection_set', 'FragmentDefinition'],
['leave', 'FragmentDefinition', 3, None],
['enter', 'OperationDefinition', 4, None],
['enter', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['enter', 'Field', 0, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['enter', 'Argument', 0, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'BooleanValue', 'value', 'Argument'],
['leave', 'BooleanValue', 'value', 'Argument'],
['leave', 'Argument', 0, None],
['enter', 'Argument', 1, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'BooleanValue', 'value', 'Argument'],
['leave', 'BooleanValue', 'value', 'Argument'],
['leave', 'Argument', 1, None],
['enter', 'Argument', 2, None],
['enter', 'Name', 'name', 'Argument'],
['leave', 'Name', 'name', 'Argument'],
['enter', 'NullValue', 'value', 'Argument'],
['leave', 'NullValue', 'value', 'Argument'],
['leave', 'Argument', 2, None],
['leave', 'Field', 0, None],
['enter', 'Field', 1, None],
['enter', 'Name', 'name', 'Field'],
['leave', 'Name', 'name', 'Field'],
['leave', 'Field', 1, None],
['leave', 'SelectionSet', 'selection_set', 'OperationDefinition'],
['leave', 'OperationDefinition', 4, None],
['leave', 'Document', None, None]
]
def test_visits_in_pararell_allows_skipping_a_subtree():
visited = []
ast = parse('{ a, b { x }, c }')
class TestVisitor(Visitor):
def enter(self, node, key, parent, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
if type(node).__name__ == 'Field' and node.name.value == 'b':
return False
def leave(self, node, key, parent, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
visit(ast, ParallelVisitor([TestVisitor()]))
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'OperationDefinition', None],
['leave', 'Document', None],
]
def test_visits_in_pararell_allows_skipping_different_subtrees():
visited = []
ast = parse('{ a { x }, b { y} }')
class TestVisitor(Visitor):
def __init__(self, name):
self.name = name
def enter(self, node, key, parent, *args):
visited.append(["no-{}".format(self.name), 'enter',
type(node).__name__, getattr(node, 'value', None)])
if type(node).__name__ == 'Field' and node.name.value == self.name:
return False
def leave(self, node, key, parent, *args):
visited.append(["no-{}".format(self.name), 'leave',
type(node).__name__, getattr(node, 'value', None)])
visit(ast, ParallelVisitor([TestVisitor('a'), TestVisitor('b')]))
assert visited == [
['no-a', 'enter', 'Document', None],
['no-b', 'enter', 'Document', None],
['no-a', 'enter', 'OperationDefinition', None],
['no-b', 'enter', 'OperationDefinition', None],
['no-a', 'enter', 'SelectionSet', None],
['no-b', 'enter', 'SelectionSet', None],
['no-a', 'enter', 'Field', None],
['no-b', 'enter', 'Field', None],
['no-b', 'enter', 'Name', 'a'],
['no-b', 'leave', 'Name', 'a'],
['no-b', 'enter', 'SelectionSet', None],
['no-b', 'enter', 'Field', None],
['no-b', 'enter', 'Name', 'x'],
['no-b', 'leave', 'Name', 'x'],
['no-b', 'leave', 'Field', None],
['no-b', 'leave', 'SelectionSet', None],
['no-b', 'leave', 'Field', None],
['no-a', 'enter', 'Field', None],
['no-b', 'enter', 'Field', None],
['no-a', 'enter', 'Name', 'b'],
['no-a', 'leave', 'Name', 'b'],
['no-a', 'enter', 'SelectionSet', None],
['no-a', 'enter', 'Field', None],
['no-a', 'enter', 'Name', 'y'],
['no-a', 'leave', 'Name', 'y'],
['no-a', 'leave', 'Field', None],
['no-a', 'leave', 'SelectionSet', None],
['no-a', 'leave', 'Field', None],
['no-a', 'leave', 'SelectionSet', None],
['no-b', 'leave', 'SelectionSet', None],
['no-a', 'leave', 'OperationDefinition', None],
['no-b', 'leave', 'OperationDefinition', None],
['no-a', 'leave', 'Document', None],
['no-b', 'leave', 'Document', None],
]
def test_visits_in_pararell_allows_early_exit_while_visiting():
visited = []
ast = parse('{ a, b { x }, c }')
class TestVisitor(Visitor):
def enter(self, node, key, parent, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
def leave(self, node, key, parent, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
if type(node).__name__ == 'Name' and node.value == 'x':
return BREAK
visit(ast, ParallelVisitor([TestVisitor()]))
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'b'],
['leave', 'Name', 'b'],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'x'],
['leave', 'Name', 'x']
]
def test_visits_in_pararell_allows_early_exit_from_different_points():
visited = []
ast = parse('{ a { y }, b { x } }')
class TestVisitor(Visitor):
def __init__(self, name):
self.name = name
def enter(self, node, key, parent, *args):
visited.append(["break-{}".format(self.name), 'enter',
type(node).__name__, getattr(node, 'value', None)])
def leave(self, node, key, parent, *args):
visited.append(["break-{}".format(self.name), 'leave',
type(node).__name__, getattr(node, 'value', None)])
if type(node).__name__ == 'Field' and node.name.value == self.name:
return BREAK
visit(ast, ParallelVisitor([TestVisitor('a'), TestVisitor('b')]))
assert visited == [
['break-a', 'enter', 'Document', None],
['break-b', 'enter', 'Document', None],
['break-a', 'enter', 'OperationDefinition', None],
['break-b', 'enter', 'OperationDefinition', None],
['break-a', 'enter', 'SelectionSet', None],
['break-b', 'enter', 'SelectionSet', None],
['break-a', 'enter', 'Field', None],
['break-b', 'enter', 'Field', None],
['break-a', 'enter', 'Name', 'a'],
['break-b', 'enter', 'Name', 'a'],
['break-a', 'leave', 'Name', 'a'],
['break-b', 'leave', 'Name', 'a'],
['break-a', 'enter', 'SelectionSet', None],
['break-b', 'enter', 'SelectionSet', None],
['break-a', 'enter', 'Field', None],
['break-b', 'enter', 'Field', None],
['break-a', 'enter', 'Name', 'y'],
['break-b', 'enter', 'Name', 'y'],
['break-a', 'leave', 'Name', 'y'],
['break-b', 'leave', 'Name', 'y'],
['break-a', 'leave', 'Field', None],
['break-b', 'leave', 'Field', None],
['break-a', 'leave', 'SelectionSet', None],
['break-b', 'leave', 'SelectionSet', None],
['break-a', 'leave', 'Field', None],
['break-b', 'leave', 'Field', None],
['break-b', 'enter', 'Field', None],
['break-b', 'enter', 'Name', 'b'],
['break-b', 'leave', 'Name', 'b'],
['break-b', 'enter', 'SelectionSet', None],
['break-b', 'enter', 'Field', None],
['break-b', 'enter', 'Name', 'x'],
['break-b', 'leave', 'Name', 'x'],
['break-b', 'leave', 'Field', None],
['break-b', 'leave', 'SelectionSet', None],
['break-b', 'leave', 'Field', None]
]
def test_visits_in_pararell_allows_for_editing_on_enter():
visited = []
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
class TestVisitor1(Visitor):
def enter(self, node, key, parent, *args):
if type(node).__name__ == 'Field' and node.name.value == 'b':
return REMOVE
class TestVisitor2(Visitor):
def enter(self, node, key, parent, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
def leave(self, node, key, parent, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
edited_ast = visit(ast, ParallelVisitor([TestVisitor1(), TestVisitor2()]))
assert ast == parse('{ a, b, c { a, b, c } }', no_location=True)
assert edited_ast == parse('{ a, c { a, c } }', no_location=True)
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'OperationDefinition', None],
['leave', 'Document', None]
]
def test_visits_in_pararell_allows_for_editing_on_leave():
visited = []
ast = parse('{ a, b, c { a, b, c } }', no_location=True)
class TestVisitor1(Visitor):
def leave(self, node, key, parent, *args):
if type(node).__name__ == 'Field' and node.name.value == 'b':
return REMOVE
class TestVisitor2(Visitor):
def enter(self, node, key, parent, *args):
visited.append(
['enter', type(node).__name__, getattr(node, 'value', None)])
def leave(self, node, key, parent, *args):
visited.append(
['leave', type(node).__name__, getattr(node, 'value', None)])
edited_ast = visit(ast, ParallelVisitor([TestVisitor1(), TestVisitor2()]))
assert ast == parse('{ a, b, c { a, b, c } }', no_location=True)
assert edited_ast == parse('{ a, c { a, c } }', no_location=True)
assert visited == [
['enter', 'Document', None],
['enter', 'OperationDefinition', None],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'b'],
['leave', 'Name', 'b'],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['enter', 'SelectionSet', None],
['enter', 'Field', None],
['enter', 'Name', 'a'],
['leave', 'Name', 'a'],
['leave', 'Field', None],
['enter', 'Field', None],
['enter', 'Name', 'b'],
['leave', 'Name', 'b'],
['enter', 'Field', None],
['enter', 'Name', 'c'],
['leave', 'Name', 'c'],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'Field', None],
['leave', 'SelectionSet', None],
['leave', 'OperationDefinition', None],
['leave', 'Document', None]
]
def test_visits_with_typeinfo_maintains_type_info_during_visit():
visited = []
ast = parse('{ human(id: 4) { name, pets { name }, unknown } }')
type_info = TypeInfo(test_schema)
class TestVisitor(Visitor):
def enter(self, node, key, parent, *args):
parent_type = type_info.get_parent_type()
_type = type_info.get_type()
input_type = type_info.get_input_type()
visited.append([
'enter',
type(node).__name__,
node.value if type(node).__name__ == "Name" else None,
str(parent_type) if parent_type else None,
str(_type) if _type else None,
str(input_type) if input_type else None
])
def leave(self, node, key, parent, *args):
parent_type = type_info.get_parent_type()
_type = type_info.get_type()
input_type = type_info.get_input_type()
visited.append([
'leave',
type(node).__name__,
node.value if type(node).__name__ == "Name" else None,
str(parent_type) if parent_type else None,
str(_type) if _type else None,
str(input_type) if input_type else None
])
visit(ast, TypeInfoVisitor(type_info, TestVisitor()))
assert visited == [
['enter', 'Document', None, None, None, None],
['enter', 'OperationDefinition', None, None, 'QueryRoot', None],
['enter', 'SelectionSet', None, 'QueryRoot', 'QueryRoot', None],
['enter', 'Field', None, 'QueryRoot', 'Human', None],
['enter', 'Name', 'human', 'QueryRoot', 'Human', None],
['leave', 'Name', 'human', 'QueryRoot', 'Human', None],
['enter', 'Argument', None, 'QueryRoot', 'Human', 'ID'],
['enter', 'Name', 'id', 'QueryRoot', 'Human', 'ID'],
['leave', 'Name', 'id', 'QueryRoot', 'Human', 'ID'],
['enter', 'IntValue', None, 'QueryRoot', 'Human', 'ID'],
['leave', 'IntValue', None, 'QueryRoot', 'Human', 'ID'],
['leave', 'Argument', None, 'QueryRoot', 'Human', 'ID'],
['enter', 'SelectionSet', None, 'Human', 'Human', None],
['enter', 'Field', None, 'Human', 'String', None],
['enter', 'Name', 'name', 'Human', 'String', None],
['leave', 'Name', 'name', 'Human', 'String', None],
['leave', 'Field', None, 'Human', 'String', None],
['enter', 'Field', None, 'Human', '[Pet]', None],
['enter', 'Name', 'pets', 'Human', '[Pet]', None],
['leave', 'Name', 'pets', 'Human', '[Pet]', None],
['enter', 'SelectionSet', None, 'Pet', '[Pet]', None],
['enter', 'Field', None, 'Pet', 'String', None],
['enter', 'Name', 'name', 'Pet', 'String', None],
['leave', 'Name', 'name', 'Pet', 'String', None],
['leave', 'Field', None, 'Pet', 'String', None],
['leave', 'SelectionSet', None, 'Pet', '[Pet]', None],
['leave', 'Field', None, 'Human', '[Pet]', None],
['enter', 'Field', None, 'Human', None, None],
['enter', 'Name', 'unknown', 'Human', None, None],
['leave', 'Name', 'unknown', 'Human', None, None],
['leave', 'Field', None, 'Human', None, None],
['leave', 'SelectionSet', None, 'Human', 'Human', None],
['leave', 'Field', None, 'QueryRoot', 'Human', None],
['leave', 'SelectionSet', None, 'QueryRoot', 'QueryRoot', None],
['leave', 'OperationDefinition', None, None, 'QueryRoot', None],
['leave', 'Document', None, None, None, None]
]
def test_visits_with_typeinfo_maintains_type_info_during_edit():
visited = []
ast = parse('{ human(id: 4) { name, pets }, alien }')
type_info = TypeInfo(test_schema)
class TestVisitor(Visitor):
def enter(self, node, key, parent, *args):
parent_type = type_info.get_parent_type()
_type = type_info.get_type()
input_type = type_info.get_input_type()
visited.append([
'enter',
type(node).__name__,
node.value if type(node).__name__ == "Name" else None,
str(parent_type) if parent_type else None,
str(_type) if _type else None,
str(input_type) if input_type else None
])
# Make a query valid by adding missing selection sets.
if type(node).__name__ == "Field" and not node.selection_set and is_composite_type(get_named_type(_type)):
return Field(
alias=node.alias,
name=node.name,
arguments=node.arguments,
directives=node.directives,
selection_set=SelectionSet(
[Field(name=Name(value='__typename'))]
)
)
def leave(self, node, key, parent, *args):
parent_type = type_info.get_parent_type()
_type = type_info.get_type()
input_type = type_info.get_input_type()
visited.append([
'leave',
type(node).__name__,
node.value if type(node).__name__ == "Name" else None,
str(parent_type) if parent_type else None,
str(_type) if _type else None,