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test_magic_terminal.py
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220 lines (181 loc) · 5.8 KB
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"""Tests for various magic functions specific to the terminal frontend."""
# -----------------------------------------------------------------------------
# Imports
# -----------------------------------------------------------------------------
import sys
from io import StringIO
from unittest import TestCase
from IPython.testing import tools as tt
# -----------------------------------------------------------------------------
# Test functions begin
# -----------------------------------------------------------------------------
MINIMAL_LAZY_MAGIC = """
from IPython.core.magic import (
Magics,
magics_class,
line_magic,
cell_magic,
)
@magics_class
class LazyMagics(Magics):
@line_magic
def lazy_line(self, line):
print("Lazy Line")
@cell_magic
def lazy_cell(self, line, cell):
print("Lazy Cell")
def load_ipython_extension(ipython):
ipython.register_magics(LazyMagics)
"""
def check_cpaste(code, should_fail=False):
"""Execute code via 'cpaste' and ensure it was executed, unless
should_fail is set.
"""
ip.user_ns["code_ran"] = False
src = StringIO()
src.write(code)
src.write("\n--\n")
src.seek(0)
stdin_save = sys.stdin
sys.stdin = src
try:
context = tt.AssertPrints if should_fail else tt.AssertNotPrints
with context("Traceback (most recent call last)"):
ip.run_line_magic("cpaste", "")
if not should_fail:
assert ip.user_ns["code_ran"], "%r failed" % code
finally:
sys.stdin = stdin_save
def test_cpaste():
"""Test cpaste magic"""
def runf():
"""Marker function: sets a flag when executed."""
ip.user_ns["code_ran"] = True
return "runf" # return string so '+ runf()' doesn't result in success
tests = {
"pass": [
"runf()",
"In [1]: runf()",
"In [1]: if 1:\n ...: runf()",
"> > > runf()",
">>> runf()",
" >>> runf()",
],
"fail": [
"1 + runf()",
"++ runf()",
],
}
ip.user_ns["runf"] = runf
for code in tests["pass"]:
check_cpaste(code)
for code in tests["fail"]:
check_cpaste(code, should_fail=True)
class PasteTestCase(TestCase):
"""Multiple tests for clipboard pasting"""
def paste(self, txt, flags="-q"):
"""Paste input text, by default in quiet mode"""
ip.hooks.clipboard_get = lambda: txt
ip.run_line_magic("paste", flags)
def setUp(self):
# Inject fake clipboard hook but save original so we can restore it later
self.original_clip = ip.hooks.clipboard_get
def tearDown(self):
# Restore original hook
ip.hooks.clipboard_get = self.original_clip
def test_paste(self):
ip.user_ns.pop("x", None)
self.paste("x = 1")
self.assertEqual(ip.user_ns["x"], 1)
ip.user_ns.pop("x")
def test_paste_pyprompt(self):
ip.user_ns.pop("x", None)
self.paste(">>> x=2")
self.assertEqual(ip.user_ns["x"], 2)
ip.user_ns.pop("x")
def test_paste_py_multi(self):
self.paste(
"""
>>> x = [1,2,3]
>>> y = []
>>> for i in x:
... y.append(i**2)
...
"""
)
self.assertEqual(ip.user_ns["x"], [1, 2, 3])
self.assertEqual(ip.user_ns["y"], [1, 4, 9])
def test_paste_py_multi_r(self):
"Now, test that self.paste -r works"
self.test_paste_py_multi()
self.assertEqual(ip.user_ns.pop("x"), [1, 2, 3])
self.assertEqual(ip.user_ns.pop("y"), [1, 4, 9])
self.assertFalse("x" in ip.user_ns)
ip.run_line_magic("paste", "-r")
self.assertEqual(ip.user_ns["x"], [1, 2, 3])
self.assertEqual(ip.user_ns["y"], [1, 4, 9])
def test_paste_email(self):
"Test pasting of email-quoted contents"
self.paste(
"""\
>> def foo(x):
>> return x + 1
>> xx = foo(1.1)"""
)
self.assertEqual(ip.user_ns["xx"], 2.1)
def test_paste_email2(self):
"Email again; some programs add a space also at each quoting level"
self.paste(
"""\
> > def foo(x):
> > return x + 1
> > yy = foo(2.1) """
)
self.assertEqual(ip.user_ns["yy"], 3.1)
def test_paste_email_py(self):
"Email quoting of interactive input"
self.paste(
"""\
>> >>> def f(x):
>> ... return x+1
>> ...
>> >>> zz = f(2.5) """
)
self.assertEqual(ip.user_ns["zz"], 3.5)
def test_paste_echo(self):
"Also test self.paste echoing, by temporarily faking the writer"
w = StringIO()
old_write = sys.stdout.write
sys.stdout.write = w.write
code = """
a = 100
b = 200"""
try:
self.paste(code, "")
out = w.getvalue()
finally:
sys.stdout.write = old_write
self.assertEqual(ip.user_ns["a"], 100)
self.assertEqual(ip.user_ns["b"], 200)
assert out == code + "\n## -- End pasted text --\n"
def test_paste_leading_commas(self):
"Test multiline strings with leading commas"
tm = ip.magics_manager.registry["TerminalMagics"]
s = '''\
a = """
,1,2,3
"""'''
ip.user_ns.pop("foo", None)
tm.store_or_execute(s, "foo")
self.assertIn("foo", ip.user_ns)
def test_paste_trailing_question(self):
"Test pasting sources with trailing question marks"
tm = ip.magics_manager.registry["TerminalMagics"]
s = """\
def funcfoo():
if True: #am i true?
return 'fooresult'
"""
ip.user_ns.pop("funcfoo", None)
self.paste(s)
self.assertEqual(ip.user_ns["funcfoo"](), "fooresult")