autopkgtests: provide t-apply-diff

[dgit.git] / tests / lib

diff --git a/tests/lib b/tests/lib
index 94c4c7969ba0702e5a3bd6ff03beef9ee3ad683b..fb6059ba835d456cb0f795cfd0be535c5fd9e3fb 100644 (file)
--- a/tests/lib
+++ b/tests/lib
@@ -158,3 +158,10 @@ t-ref-dsc-dgit () {
                print $ref,"\n";
        ' <$tmp/incoming/${p}_${v}.dsc >$tmp/t.ref1
 }
+
+t-apply-diff () {
+       local v1=$1
+       local v2=$2
+       (cd $troot/pkg-srcs; debdiff ${p}_${v1}.dsc ${p}_${v2}.dsc) \
+               | patch -p1 -u
+}