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import unittest
from gfapy import *
class TestApiPlaceholders(unittest.TestCase):
def test_str(self):
self.assertEqual("*", str(Placeholder()))
def test_is_placeholder(self):
self.assertTrue(is_placeholder(Placeholder()))
self.assertTrue(is_placeholder("*"))
self.assertTrue(is_placeholder([]))
self.assertFalse(is_placeholder("a"))
self.assertFalse(is_placeholder("**"))
self.assertFalse(is_placeholder(1))
self.assertFalse(is_placeholder(1.0))
self.assertFalse(is_placeholder(["x"]))
def test_compatibility_methods(self):
p = Placeholder()
self.assertTrue(p.is_empty())
self.assertTrue(is_placeholder(p))
self.assertEqual(0, len(p))
self.assertTrue(is_placeholder(p.rc()))
self.assertTrue(is_placeholder(p + 1))
self.assertTrue(is_placeholder(p[0]))
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