Alter test to test import --exact to make sure it works with branches.
--- a/tests/test-impexp-branch
+++ b/tests/test-impexp-branch
@@ -37,3 +37,9 @@ hg init b
cd b
hg -R ../a export 0 | hg import -
hg -R ../a export 1 | hg import -
+cd ..
+rm -rf b
+hg init b
+cd b
+hg -R ../a export 0 | hg import --exact -
+hg -R ../a export 1 | hg import --exact -
--- a/tests/test-impexp-branch.out
+++ b/tests/test-impexp-branch.out
@@ -1,2 +1,4 @@
applying patch from stdin
applying patch from stdin
+applying patch from stdin
+applying patch from stdin