test_cmp expect actual
'
+test_expect_success 'setup and absorb a submodule' '
+ test_create_repo sub1 &&
+ test_commit -C sub1 initial &&
+ git submodule add ./sub1 &&
+ git submodule absorbgitdirs &&
+ git commit -a -m "add submodule" &&
+ git describe --dirty >expect &&
+ git describe --broken >out &&
+ test_cmp expect out
+'
+
+test_expect_success 'describe chokes on severely broken submodules' '
+ mv .git/modules/sub1/ .git/modules/sub_moved &&
+ test_must_fail git describe --dirty
+'
+test_expect_success 'describe ignoring a borken submodule' '
+ git describe --broken >out &&
+ grep broken out
+'
+
test_done