def test_11(): assert countAbc("aaa") == 0
def test_9(): assert countAbc("aba") == 1
def test_10(): assert countAbc("aca") == 0
def test_7(): assert countAbc("") == 0
def test_8(): assert countAbc("ab") == 0
def test_5(): assert countAbc("aaabc") == 1
def test_6(): assert countAbc("hello") == 0
def test_4(): assert countAbc("abxbc") == 0
def test_3(): assert countAbc("ababc") == 2
def test_2(): assert countAbc("abaxxaba") == 2
def test_1(): assert countAbc("abcxxabc") == 2
def test_0(): assert countAbc("abc") == 1