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#------------------------------------------------------------------------------
# Copyright (c) 2018-2024, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
import os
import sys
import ast
import enaml
import pytest
import traceback
from textwrap import dedent
from enaml.compat import PY310, PY311
def validate_ast(py_node, enaml_node, dump_ast=False, offset=0):
"""Validate each node of an ast against another ast.
Typically used to compare an AST generated by the Python paser and one
generated by the enaml parser.
"""
if dump_ast:
print('Python node:\n', ast.dump(py_node))
print('Enaml node:\n', ast.dump(enaml_node))
assert type(py_node) == type(enaml_node)
if isinstance(py_node, ast.AST):
for name, field in ast.iter_fields(py_node):
if name == 'ctx':
assert type(field) == type(getattr(enaml_node, name))
else:
field2 = getattr(enaml_node, name, None)
print(' '*offset, 'Validating:', name)
validate_ast(field, field2, offset=offset+1)
elif isinstance(py_node, list):
if len(py_node) != len(enaml_node):
return False
for i, n1 in enumerate(py_node):
print(' '*offset, 'Validating', i+1, 'th element')
validate_ast(n1, enaml_node[i], offset=offset+1)
else:
assert py_node == enaml_node
def test_syntax_error_traceback_correct_path(tmpdir):
""" Test that a syntax error retains the path to the file
"""
test_module_path = os.path.join(tmpdir.strpath, 'view.enaml')
with open(os.path.join(tmpdir.strpath, 'test_main.enaml'), 'w') as f:
f.write(dedent("""
from enaml.widgets.api import Window, Container, Label
from view import CustomView
enamldef MyWindow(Window): main:
CustomView:
pass
"""))
with open(test_module_path, 'w') as f:
f.write(dedent("""
from enaml.widgets.api import Container, Label
enamldef CustomLabel(Container):
Label # : missing intentionally
text = "Hello world"
"""))
try:
sys.path.append(tmpdir.strpath)
with enaml.imports():
from test_main import MyWindow
assert False, "Should raise a syntax error"
except Exception as e:
tb = traceback.format_exc()
print(tb)
lines = tb.strip().split("\n")
line = '\n'.join(lines[-4:])
expected = 'File "{}", line 5'.format(test_module_path)
assert expected in line
finally:
sys.path.remove(tmpdir.strpath)
def test_syntax_error_traceback_show_line(tmpdir):
""" Test that a syntax error retains the path to the file
"""
test_module_path = os.path.join(tmpdir.strpath, 'test_syntax.enaml')
with open(test_module_path, 'w') as f:
f.write(dedent("""
from enaml.widgets.api import Container, Label
enamldef CustomLabel(Container):
Label # : missing intentionally
text = "Hello world"
"""))
try:
sys.path.append(tmpdir.strpath)
with enaml.imports():
from test_syntax import CustomLabel
assert False, "Should raise a syntax error"
except Exception as e:
tb = traceback.format_exc()
print(tb)
lines = tb.strip().split("\n")
line = '\n'.join(lines[-4:])
expected = 'Label # : missing intentionally'
assert expected in line
finally:
sys.path.remove(tmpdir.strpath)
INDENTATION_TESTS = {
"enamldef-block": (
"""
from enaml.widgets.api import Window, Container, Label
enamldef MainWindow(Window):
attr x = 1
""",
"attr x = 1",
),
"childdef-block": (
"""
from enaml.widgets.api import Window, Container, Label
enamldef MainWindow(Window):
Container:
Label: # no indent
text = "Hello world"
""",
"Label: # no indent",
),
"childdef-indent-mismatch": (
"""
from enaml.widgets.api import Window, Container, Label
enamldef MainWindow(Window):
Container:
Label:
text = "Hello world"
Label: # indent mismatch
text = "Hello world"
""",
"Label: # indent mismatch",
),
"childdef-attr": (
"""
from enaml.widgets.api import Window, Container, Label
enamldef MainWindow(Window):
Container:
Label:
text = 'Hello world'
""",
"text = 'Hello world'"
),
"if-block": (
"""
from enaml.widgets.api import Window
enamldef MainWindow(Window):
func go():
if True:
x = 1
else:
x = 0
""",
"x = 1",
),
"for-block": (
"""
from enaml.widgets.api import Window
enamldef MainWindow(Window):
func go():
x = 0
for i in range(4):
x += 1
""",
"x += 1"
),
"try-block": (
"""
from enaml.widgets.api import Window
enamldef MainWindow(Window):
func go():
try:
x = 1/0
except Exception as e:
print(e)
""",
"x = 1/0"
),
"except-block": (
"""
from enaml.widgets.api import Window
enamldef MainWindow(Window):
func go():
try:
x = 0
except Exception as e:
print(e)
""",
"print(e)"
),
"finally-block": (
"""
from enaml.widgets.api import Window
enamldef MainWindow(Window):
func go():
try:
x = 0
finally:
x = 2
return 3
""",
"x = 2"
),
"class": (
"""
from enaml.widgets.api import Window, Container, Label
class Foo:
x = 1
def add():
self.x += 1
""",
"def add()",
),
}
@pytest.mark.parametrize("label", INDENTATION_TESTS.keys())
def test_indent_error_traceback_show_line(tmpdir, label):
""" Test that a syntax error retains the path to the file
"""
test_module_path = os.path.join(tmpdir.strpath, f'test_indent_{label}.enaml')
source, expected= INDENTATION_TESTS[label]
with open(test_module_path, 'w') as f:
f.write(dedent(source.lstrip("\n")))
try:
sys.path.append(tmpdir.strpath)
with enaml.imports():
__import__(f"test_indent_{label}")
assert False, "Should raise a identation error"
except IndentationError as e:
tb = traceback.format_exc()
print(tb)
lines = tb.strip().split("\n")
line = '\n'.join(lines[-4:])
assert expected in line
finally:
sys.path.remove(tmpdir.strpath)
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