def test_stack_limit_local(self):
s = io.StringIO()
with redirect_stdout(s):
a = [1, 2, 3]
watch(a, file=sys.stdout, stack_limit=1)
a[0] = 2
unwatch()
self.assertEqual(s.getvalue().count("> "), 1)
def test_write_to_file(self):
a = [1, 2, 3]
watch(a, file="tmp_test.log")
a[0] = 2
unwatch()
with open("tmp_test.log") as f:
data = f.read()
os.remove("tmp_test.log")
self.assertIn("a[0] = 2", data)
def test_printer(self):
s = io.StringIO()
with redirect_stdout(s):
watch.config(file=sys.stdout)
a = [1, 2, 3]
watch(a)
a[0] = 2
unwatch()
self.assertNotEqual(s.getvalue(), "")
def test_stack_limit_global(self):
watch.config(stack_limit=1)
s = io.StringIO()
with redirect_stdout(s):
watch.config(file=sys.stdout)
a = [1, 2, 3]
watch(a)
a[0] = 2
unwatch()
self.assertEqual(s.getvalue().count("> "), 1)
def test_alias(self):
cb = CB()
watch.config(callback=cb)
a = [1, 2, 3]
watch(a, alias="a")
a[1] = 4
self.assertEqual(cb.counter, 1)
unwatch("a")
a[1] = 5
self.assertEqual(cb.counter, 1)
def test_noargs(self):
cb = CB()
watch.config(callback=cb)
a = [1, 2, 3]
watch(a)
a[1] = 0
self.assertEqual(cb.counter, 1)
unwatch()
a[1] = 2
self.assertEqual(cb.counter, 1)
def test_when(self):
cb = CB()
a = 0
watch(a, callback=cb, when=lambda x: x > 0)
a = -1
a = 1
a = 2
a = -3
self.assertEqual(cb.counter, 2)
unwatch()
def test_deepcopy(self):
cb = CB()
a = {"a": [0]}
watch(a, callback=cb)
a["a"][0] = 1
self.assertEqual(cb.counter, 0)
unwatch()
watch(a, callback=cb, deepcopy=True)
a["a"][0] = 2
self.assertEqual(cb.counter, 1)
unwatch()
def test_write_to_file_stream(self):
f = open("tmp_test.log", "w")
a = [1, 2, 3]
watch(a, file=f, stack_limit=1)
a[0] = 2
unwatch()
f.close()
with open("tmp_test.log") as f:
data = f.read()
os.remove("tmp_test.log")
self.assertEqual(data.count("> "), 1)
def test_install(self):
watch.install("_watch")
_watch() # noqa
cb = CB()
a = [1, 2, 3]
watch(a, callback=cb)
a[0] = 2
self.assertEqual(cb.counter, 1)
_watch.unwatch() # noqa
watch.uninstall("_watch")
with self.assertRaises(NameError):
_watch(a) # noqa
def test_custom_cmp(self):
def cmp(obj1, obj2):
return False
cb = CB()
a = {"a": 0}
watch(a, callback=cb, cmp=cmp)
a["a"] = 1
self.assertEqual(cb.counter, 0)
a["a"] = 2
self.assertEqual(cb.counter, 0)
unwatch()
def test_custom_copy(self):
def copy(obj):
return {"a": 0}
cb = CB()
a = {"a": 0}
watch(a, callback=cb, copy=copy)
a["a"] = 1
self.assertEqual(cb.counter, 1)
a["a"] = 1
self.assertGreater(cb.counter, 2)
unwatch()
def test_long(self):
cb = CB()
watch.config(callback=cb)
a = [1, 2, 3]
watch(a)
a[1] = 0
self.assertEqual(cb.counter, 1)
unwatch(a)
a[1] = 1
self.assertEqual(cb.counter, 1)
watch(a)
a[1] = 0
self.assertEqual(cb.counter, 2)
unwatch()
a[1] = 2
self.assertEqual(cb.counter, 2)
watch(a)
a[1] = 0
self.assertEqual(cb.counter, 3)
unwatch()
a[1] = 2
self.assertEqual(cb.counter, 3)
watch(a, alias="a")
a[1] = 4
self.assertEqual(cb.counter, 4)
unwatch("a")
a[1] = 5
self.assertEqual(cb.counter, 4)
def test_basic(self):
cb = CB()
a = [0]
watch(a, callback=cb)
# Create new threads
thread1 = myThread(1, "Thread-1", a)
thread2 = myThread(2, "Thread-2", a)
# Start new Threads
thread1.start()
thread2.start()
thread1.join()
thread2.join()
unwatch()
self.assertEqual(cb.counter, 10)
def test_custom_printer(self):
s = io.StringIO()
with redirect_stdout(s):
watch.config(file=sys.stdout)
a = [i for i in range(100)]
watch(a, custom_printer=print)
a = [i + 1 for i in range(100)]
unwatch()
self.assertLess(s.getvalue().count("\n"), 100)
with redirect_stdout(s):
watch.config(file=sys.stdout, custom_printer=print)
a = [i for i in range(100)]
watch(a)
a = [i + 1 for i in range(100)]
unwatch()
self.assertLess(s.getvalue().count("\n"), 100)
def test_element_callback(self):
cb = CB()
a = [1, 2, 3]
watch(a, callback=cb)
a[0] = 2
a.append(4)
b = a
b.append(5)
a = {"a": 1}
a["b"] = 2
def change(d):
d["c"] = 3
change(a)
self.assertEqual(cb.counter, 6)
unwatch()
def test_series(self):
def __comparison_series__(obj1, obj2):
return not obj1.equals(obj2)
cb = CB()
ss = pd.Series(data=[1, 2, 3], index=list("abc"))
watch(ss, cmp=__comparison_series__, callback=cb)
# Should watch here
self.assertEqual(cb.counter, 0)
ss.loc["a"] = 10
self.assertEqual(cb.counter, 1)
unwatch()
def test_attr(self):
class MyObj:
def __init__(self):
self.a = 0
cb = CB()
watch.config(callback=cb)
obj = MyObj()
watch(obj.a)
obj.a = 1
self.assertEqual(cb.counter, 1)
unwatch(obj.a)
obj.a = 2
self.assertEqual(cb.counter, 1)
watch(obj)
obj.a = 3
self.assertEqual(cb.counter, 2)
obj.a = 3
self.assertEqual(cb.counter, 2)
def test_basic(self):
cb = CB()
watch.config(callback=cb)
a = [1, 2, 3]
watch(a)
a[0] = 2
a.append(4)
b = a
b.append(5)
a = {"a": 1}
a["b"] = 2
def change(d):
d["c"] = 3
change(a)
self.assertEqual(cb.counter, 6)
unwatch()
def test_dataframe(self):
cb = CB()
df = pd.DataFrame(data=[[1, 2], [3, 4], [5, 6]],
index=list("abc"),
columns=list("AB"))
watch(df, callback=cb)
# Other stuff happens
a = 2
_ = a + 5
self.assertEqual(cb.counter, 0)
df.loc["a", "B"] = 10
self.assertEqual(cb.counter, 1)
unwatch()
def test_subscr(self):
cb = CB()
watch.config(callback=cb)
a = [1, 2, 3]
watch(a[1])
a[0] = 2
a[1] = 3
self.assertEqual(cb.counter, 1)
with self.assertRaises(ValueError):
watch(a[0:2])
def val(arg):
return 1
a[val(3)] = 4
self.assertEqual(cb.counter, 2)
unwatch()
a = {"a": 1}
watch(a["a"])
a["a"] = 2
a["b"] = 3
self.assertEqual(cb.counter, 3)
unwatch()
def test_dataframe(self):
def __comparison_dataframe__(obj1, obj2):
return not obj1.equals(obj2)
cb = CB()
df = pd.DataFrame(data=[[1, 2], [3, 4], [5, 6]],
index=list("abc"),
columns=list("AB"))
watch(df, cmp=__comparison_dataframe__, callback=cb)
# Other stuff happens
a = 2
b = a + 5
self.assertEqual(cb.counter, 0)
df.loc["a", "B"] = 10
self.assertEqual(cb.counter, 1)
unwatch()
def test_track(self):
cb = CB()
a = [1, 2, 3]
b = [1, 2, 3]
watch(a, callback=cb, track="object")
a[0] = 2
self.assertEqual(cb.counter, 1)
a = {}
self.assertEqual(cb.counter, 1)
watch(b, callback=cb, track=["variable"])
b[0] = 2
self.assertEqual(cb.counter, 1)
b = {}
self.assertEqual(cb.counter, 2)
with self.assertRaises(ValueError):
c = []
watch(c, track=["invalid"])
with self.assertRaises(ValueError):
c = []
watch(c, track="invalid")
with self.assertRaises(ValueError):
c = []
watch(c, track=[])
with self.assertRaises(TypeError):
c = []
watch(c, track={})
unwatch()
