view tests/test-diff.py @ 145:f3c430afa598

hglib: abstract out use of cStringIO.StringIO (issue4520)

The cStringIO module does not exist in Python 3, but io.BytesIO does.
This change prepares for the use of io.BytesIO when available by
replacing all uses of cStringIO.StringIO with an object named BytesIO.

import common
from hglib.util import b

class test_diff(common.basetest):
    def test_basic(self):
        self.append('a', 'a\n')
        self.client.add(b('a'))
        diff1 = b("""diff -r 000000000000 a
--- /dev/null
+++ b/a
@@ -0,0 +1,1 @@
+a
""")
        self.assertEquals(diff1, self.client.diff(nodates=True))
        self.assertEquals(diff1, self.client.diff([b('a')], nodates=True))
        rev0, node0 = self.client.commit(b('first'))
        diff2 = b("""diff -r 000000000000 -r """) + node0[:12] + b(""" a
--- /dev/null
+++ b/a
@@ -0,0 +1,1 @@
+a
""")
        self.assertEquals(diff2, self.client.diff(change=rev0, nodates=True))
        self.append('a', 'a\n')
        rev1, node1 = self.client.commit(b('second'))
        diff3 = b("""diff -r """) + node0[:12] + b(""" a
--- a/a
+++ b/a
@@ -1,1 +1,2 @@
 a
+a
""")
        self.assertEquals(diff3, self.client.diff(revs=[rev0], nodates=True))
        diff4 = b("""diff -r """) + node0[:12] + b(" -r ") + node1[:12] + b(
            """ a
--- a/a
+++ b/a
@@ -1,1 +1,2 @@
 a
+a
""")
        self.assertEquals(diff4, self.client.diff(revs=[rev0, rev1],
                                                  nodates=True))

    def test_basic_plain(self):
        open('.hg/hgrc', 'a').write('[defaults]\ndiff=--git\n')
        self.test_basic()