import textwrap

from ..helpers import TestCase
from jedi import Script


class TestCallSignatures(TestCase):
    def _run(self, source, expected_name, expected_index=0, line=None, column=None):
        signatures = Script(source, line, column).call_signatures()

        assert len(signatures) <= 1

        if not signatures:
            assert expected_name is None
        else:
            assert signatures[0].call_name == expected_name
            assert signatures[0].index == expected_index

    def _run_simple(self, source, name, index=0, column=None, line=1):
        self._run(source, name, index, line, column)

    def test_simple(self):
        run = self._run_simple

        # simple
        s1 = "abs(a, str("
        run(s1, 'abs', 0, 4)
        run(s1, 'abs', 1, 6)
        run(s1, 'abs', 1, 7)
        run(s1, 'abs', 1, 8)
        run(s1, 'str', 0, 11)

        s2 = "abs(), "
        run(s2, 'abs', 0, 4)
        run(s2, None, column=5)
        run(s2, None)

        s3 = "abs()."
        run(s3, None, column=5)
        run(s3, None)

        # more complicated
        s4 = 'abs(zip(), , set,'
        run(s4, None, column=3)
        run(s4, 'abs', 0, 4)
        run(s4, 'zip', 0, 8)
        run(s4, 'abs', 0, 9)
        #run(s4, 'abs', 1, 10)

        s5 = "abs(1,\nif 2:\n def a():"
        run(s5, 'abs', 0, 4)
        run(s5, 'abs', 1, 6)

        s6 = "str().center("
        run(s6, 'center', 0)
        run(s6, 'str', 0, 4)

        s7 = "str().upper().center("
        s8 = "str(int[zip("
        run(s7, 'center', 0)
        run(s8, 'zip', 0)
        run(s8, 'str', 0, 8)

        run("import time; abc = time; abc.sleep(", 'sleep', 0)

        # jedi #57
        s = "def func(alpha, beta): pass\n" \
            "func(alpha='101',"
        run(s, 'func', 0, column=13, line=2)

    def test_flows(self):
        # jedi-vim #9
        self._run_simple("with open(", 'open', 0)

        # jedi-vim #11
        self._run_simple("for sorted(", 'sorted', 0)
        self._run_simple("for s in sorted(", 'sorted', 0)

    def test_complex(self):
        s = """
                def abc(a,b):
                    pass

                def a(self):
                    abc(

                if 1:
                    pass
            """
        self._run(s, 'abc', 0, line=6, column=24)
        s = """
                import re
                def huhu(it):
                    re.compile(
                    return it * 2
            """
        self._run(s, 'compile', 0, line=4, column=31)

        # jedi-vim #70
        s = """def foo("""
        assert Script(s).call_signatures() == []

        # jedi-vim #116
        s = """import functools; test = getattr(functools, 'partial'); test("""
        self._run(s, 'partial', 0)

    def test_call_signature_on_module(self):
        """github issue #240"""
        s = 'import datetime; datetime('
        # just don't throw an exception (if numpy doesn't exist, just ignore it)
        assert Script(s).call_signatures() == []

    def test_call_signatures_empty_parentheses_pre_space(self):
        s = textwrap.dedent("""\
        def f(a, b):
            pass
        f( )""")
        self._run(s, 'f', 0, line=3, column=3)

    def test_multiple_signatures(self):
        s = textwrap.dedent("""\
        if x:
            def f(a, b):
                pass
        else:
            def f(a, b):
                pass
        f(""")
        assert len(Script(s).call_signatures()) == 2

    def test_call_signatures_whitespace(self):
        s = textwrap.dedent("""\
        abs( 
        def x():
            pass
        """)
        self._run(s, 'abs', 0, line=1, column=5)