from __future__ import absolute_import

from __future__ import print_function

import unittest

from mercurial import (

    mdiff,

)

from mercurial.context import (

    annotateline,

    _annotatepair,

)

class AnnotateTests(unittest.TestCase):

    """Unit tests for annotate code."""

    def testannotatepair(self):

        self.maxDiff = None # camelcase-required

        oldfctx = b'old'

        p1fctx, p2fctx, childfctx = b'p1', b'p2', b'c'

        olddata = b'a\nb\n'

        p1data = b'a\nb\nc\n'

        p2data = b'a\nc\nd\n'

        childdata = b'a\nb2\nc\nc2\nd\n'

        diffopts = mdiff.diffopts()

        def decorate(text, rev):

            return ([annotateline(fctx=rev, lineno=i)

                     for i in xrange(1, text.count(b'\n') + 1)],

                    text)

        # Basic usage

        oldann = decorate(olddata, oldfctx)

        p1ann = decorate(p1data, p1fctx)

        p1ann = _annotatepair([oldann], p1fctx, p1ann, False, diffopts)

        self.assertEqual(p1ann[0], [

            annotateline('old', 1),

            annotateline('old', 2),

            annotateline('p1', 3),

        ])

        p2ann = decorate(p2data, p2fctx)

        p2ann = _annotatepair([oldann], p2fctx, p2ann, False, diffopts)

        self.assertEqual(p2ann[0], [

            annotateline('old', 1),

            annotateline('p2', 2),

            annotateline('p2', 3),

        ])

        # Test with multiple parents (note the difference caused by ordering)

        childann = decorate(childdata, childfctx)

        childann = _annotatepair([p1ann, p2ann], childfctx, childann, False,

                                 diffopts)

        self.assertEqual(childann[0], [

            annotateline('old', 1),

            annotateline('c', 2),

            annotateline('p2', 2),

            annotateline('c', 4),

            annotateline('p2', 3),

        ])

        childann = decorate(childdata, childfctx)

        childann = _annotatepair([p2ann, p1ann], childfctx, childann, False,

                                 diffopts)

        self.assertEqual(childann[0], [

            annotateline('old', 1),

            annotateline('c', 2),

            annotateline('p1', 3),

            annotateline('c', 4),

            annotateline('p2', 3),

        ])

        # Test with skipchild (note the difference caused by ordering)

        childann = decorate(childdata, childfctx)

        childann = _annotatepair([p1ann, p2ann], childfctx, childann, True,

                                 diffopts)

        self.assertEqual(childann[0], [

            annotateline('old', 1),

            annotateline('old', 2, True),

            # note that this line was carried over from earlier so it is *not*

            # marked skipped

            annotateline('p2', 2),

            annotateline('p2', 2, True),

            annotateline('p2', 3),

        ])

        childann = decorate(childdata, childfctx)

        childann = _annotatepair([p2ann, p1ann], childfctx, childann, True,

                                 diffopts)

        self.assertEqual(childann[0], [

            annotateline('old', 1),

            annotateline('old', 2, True),

            annotateline('p1', 3),

            annotateline('p1', 3, True),

            annotateline('p2', 3),

        ])

if __name__ == '__main__':

    import silenttestrunner

    silenttestrunner.main(__name__)