test/diffparse_test.py

   1 import os
   2 import unittest
   3
   4 from cola import core
   5 from cola import gitcmds
   6 from cola import diffparse
   7 from cola.diffparse import DiffParser
   8
   9 import helper
  10
  11
  12 class DiffParseModel(object):
  13     def __init__(self):
  14         self.last_worktree_diff = None
  15         self.last_diff = None
  16         self.head = 'HEAD'
  17         self.amend = False
  18
  19     def amending(self):
  20         return self.amend
  21
  22     def apply_diff_to_worktree(self, path):
  23         if os.path.exists(path):
  24             self.last_worktree_diff = core.read(path)
  25
  26     def apply_diff(self, path):
  27         if os.path.exists(path):
  28             self.last_diff = core.read(path)
  29
  30
  31 class DiffSource(object):
  32     def __init__(self, fwd, reverse):
  33         self.fwd = core.read(fwd)
  34         self.reverse = core.read(reverse)
  35
  36     def get(self, head, amending, filename, cached, reverse):
  37         if reverse:
  38             return self.parse(self.reverse)
  39         else:
  40             return self.parse(self.fwd)
  41
  42     def parse(self, diffoutput):
  43         return gitcmds.extract_diff_header(
  44                 status=0, deleted=False,
  45                 with_diff_header=True, suppress_header=False,
  46                 diffoutput=diffoutput)
  47
  48
  49 class DiffParseTestCase(unittest.TestCase):
  50     def setUp(self):
  51         self.model = DiffParseModel()
  52
  53     def test_diff(self):
  54         fwd = helper.fixture('diff.txt')
  55         reverse = helper.fixture('diff-reverse.txt')
  56         source = DiffSource(fwd, reverse)
  57         model = DiffParseModel()
  58         parser = DiffParser(model, filename='',
  59                             cached=False, reverse=False,
  60                             diff_source=source)
  61
  62         self.assertEqual(parser.offsets(),
  63                 [916, 1798, 2550])
  64         self.assertEqual(parser.spans(),
  65                 [[0, 916], [916, 1798], [1798, 2550]])
  66
  67         diffs = parser.diffs()
  68         self.assertEqual(len(diffs), 3)
  69
  70         self.assertEqual(len(diffs[0]), 23)
  71         self.assertEqual(diffs[0][0],
  72                 '@@ -6,10 +6,21 @@ from cola import gitcmds')
  73         self.assertEqual(diffs[0][1],
  74                 ' from cola import gitcfg')
  75         self.assertEqual(diffs[0][2],
  76                 ' ')
  77         self.assertEqual(diffs[0][3],
  78                 ' ')
  79         self.assertEqual(diffs[0][4],
  80                 '+class DiffSource(object):')
  81
  82         self.assertEqual(len(diffs[1]), 18)
  83         self.assertEqual(diffs[1][0],
  84                 '@@ -29,13 +40,11 @@ class DiffParser(object):')
  85         self.assertEqual(diffs[1][1],
  86                 '         self.diff_sel = []')
  87         self.assertEqual(diffs[1][2],
  88                 '         self.selected = []')
  89         self.assertEqual(diffs[1][3],
  90                 '         self.filename = filename')
  91         self.assertEqual(diffs[1][4],
  92                 '+        self.diff_source = diff_source or DiffSource()')
  93
  94         self.assertEqual(len(diffs[2]), 18)
  95         self.assertEqual(diffs[2][0],
  96                 '@@ -43,11 +52,10 @@ class DiffParser(object):')
  97
  98     def test_diff_at_start(self):
  99         fwd = helper.fixture('diff-start.txt')
 100         reverse = helper.fixture('diff-start-reverse.txt')
 101
 102         source = DiffSource(fwd, reverse)
 103         model = DiffParseModel()
 104         parser = DiffParser(model, filename='',
 105                             cached=False, reverse=False,
 106                             diff_source=source)
 107
 108         self.assertEqual(parser.diffs()[0][0], '@@ -1 +1,4 @@')
 109         self.assertEqual(parser.offsets(), [30])
 110         self.assertEqual(parser.spans(), [[0, 30]])
 111         self.assertEqual(parser.diffs_for_range(0, 10),
 112                          ([u'@@ -1 +1,4 @@\n bar\n+a\n+b\n+c\n\n'],
 113                           [0]))
 114         self.assertEqual(parser.ranges()[0].begin, [1, 1])
 115         self.assertEqual(parser.ranges()[0].end, [1, 4])
 116         self.assertEqual(parser.ranges()[0].make(), '@@ -1 +1,4 @@')
 117
 118     def test_diff_at_end(self):
 119         fwd = helper.fixture('diff-end.txt')
 120         reverse = helper.fixture('diff-end-reverse.txt')
 121
 122         source = DiffSource(fwd, reverse)
 123         model = DiffParseModel()
 124         parser = DiffParser(model, filename='',
 125                             cached=False, reverse=False,
 126                             diff_source=source)
 127
 128         self.assertEqual(parser.diffs()[0][0], '@@ -1,39 +1 @@')
 129         self.assertEqual(parser.offsets(), [1114])
 130         self.assertEqual(parser.spans(), [[0, 1114]])
 131         self.assertEqual(parser.ranges()[0].begin, [1, 39])
 132         self.assertEqual(parser.ranges()[0].end, [1, 1])
 133         self.assertEqual(parser.ranges()[0].make(), '@@ -1,39 +1 @@')
 134
 135     def test_diff_that_empties_file(self):
 136         fwd = helper.fixture('diff-empty.txt')
 137         reverse = helper.fixture('diff-empty-reverse.txt')
 138
 139         source = DiffSource(fwd, reverse)
 140         model = DiffParseModel()
 141         parser = DiffParser(model, filename='',
 142                             cached=False, reverse=False,
 143                             diff_source=source)
 144
 145         self.assertEqual(parser.diffs()[0][0], '@@ -1,2 +0,0 @@')
 146         self.assertEqual(parser.offsets(), [33])
 147         self.assertEqual(parser.spans(), [[0, 33]])
 148         self.assertEqual(parser.diffs_for_range(0, 1),
 149                          ([u'@@ -1,2 +0,0 @@\n-first\n-second\n\n'],
 150                           [0]))
 151
 152         self.assertEqual(parser.ranges()[0].begin, [1, 2])
 153         self.assertEqual(parser.ranges()[0].end, [0, 0])
 154         self.assertEqual(parser.ranges()[0].make(), '@@ -1,2 +0,0 @@')
 155
 156
 157 class RangeTestCase(unittest.TestCase):
 158
 159     def test_empty_becomes_non_empty(self):
 160         r = diffparse.Range('1,2', '0,0')
 161         self.assertEqual(r.begin, [1,2])
 162         self.assertEqual(r.end, [0, 0])
 163         self.assertEqual(r.make(), '@@ -1,2 +0,0 @@')
 164
 165         r.set_end_count(1)
 166         self.assertEqual(r.end, [1, 1])
 167         self.assertEqual(r.make(), '@@ -1,2 +1 @@')
 168
 169     def test_single_line(self):
 170         r = diffparse.Range('1', '1,2')
 171         self.assertEqual(r.begin, [1, 1])
 172         self.assertEqual(r.end, [1, 2])
 173         self.assertEqual(r.make(), '@@ -1 +1,2 @@')
 174         r.set_end_count(1)
 175         self.assertEqual(r.make(), '@@ -1 +1 @@')
 176
 177
 178 if __name__ == '__main__':
 179     unittest.main()