annotate tests/test-diff-change @ 9827:4fe9ca519637

mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)

Previous code was computing hunks then checking if these hunks could be ignored
when taking whitespace/blank-lines options in accounts. This approach is simple
but fails with hunks containing both whitespace and non-whitespace changes, the
whole hunk is emitted while it can be mostly made of whitespace. The new
version normalize the whitespaces before hunk generation, and test for
blank-lines afterwards.

#!/bin/sh -e

# test of hg diff --change

set -e

ec() {
	echo "invoking $@:"
	"$@"
}

hg init a
cd a

echo "first" > file.txt
hg add file.txt
hg commit -m 'first commit' # 0

echo "second" > file.txt
hg commit -m 'second commit' # 1

echo "third" > file.txt
hg commit -m 'third commit' # 2

ec hg diff --nodates --change 1

echo

#rev=$(hg log -r 1 --template '{node|short}')
rev=e9b286083166
ec hg diff --nodates --change "$rev"

##
# Testing diff -c when merge

for i in 1 2 3 4 5 6 7 8 9 10; do
    echo $i >> file.txt
done
hg commit -m "lots of text" # 3

sed -e 's,^2$,x,' file.txt > file.txt.tmp
mv file.txt.tmp file.txt
hg commit -m "changed 2 to x" # 4

hg up -r 3 > /dev/null 2>&1 # updated, merged, removed, unresolved
sed -e 's,^8$,y,' file.txt > file.txt.tmp
mv file.txt.tmp file.txt
hg commit -m "change 8 to y" > /dev/null 2>&1 # 5 # created new head

hg up -C -r 4 > /dev/null 2>&1 # updated, merged, removed, unresolved
hg merge -r 5 > /dev/null 2>&1 # updated, merged, removed, unresolved
hg commit -m "merging 8 to y" # 6

echo
ec hg diff --nodates --change 6 # must be similar to hg diff --nodates --change 5

#echo
#hg log

echo
echo "EOF"

# vim: set ts=4 sw=4 et: