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+#!/bin/sh
+
+test_description='Basic subproject functionality'
+. ./test-lib.sh
+
+test_expect_success 'Super project creation' \
+ ': >Makefile &&
+ git add Makefile &&
+ git commit -m "Superproject created"'
+
+
+cat >expected <<EOF
+:000000 160000 00000... A sub1
+:000000 160000 00000... A sub2
+EOF
+test_expect_success 'create subprojects' \
+ 'mkdir sub1 &&
+ ( cd sub1 && git init && : >Makefile && git add * &&
+ git commit -q -m "subproject 1" ) &&
+ mkdir sub2 &&
+ ( cd sub2 && git init && : >Makefile && git add * &&
+ git commit -q -m "subproject 2" ) &&
+ git update-index --add sub1 &&
+ git add sub2 &&
+ git commit -q -m "subprojects added" &&
+ git diff-tree --abbrev=5 HEAD^ HEAD |cut -d" " -f-3,5- >current &&
+ git diff expected current'
+
+git branch save HEAD
+
+test_expect_success 'check if fsck ignores the subprojects' \
+ 'git fsck --full'
+
+test_expect_success 'check if commit in a subproject detected' \
+ '( cd sub1 &&
+ echo "all:" >>Makefile &&
+ echo " true" >>Makefile &&
+ git commit -q -a -m "make all" ) && {
+ git diff-files --exit-code
+ test $? = 1
+ }'
+
+test_expect_success 'check if a changed subproject HEAD can be committed' \
+ 'git commit -q -a -m "sub1 changed" && {
+ git diff-tree --exit-code HEAD^ HEAD
+ test $? = 1
+ }'
+
+test_expect_success 'check if diff-index works for subproject elements' \
+ 'git diff-index --exit-code --cached save -- sub1
+ test $? = 1'
+
+test_expect_success 'check if diff-tree works for subproject elements' \
+ 'git diff-tree --exit-code HEAD^ HEAD -- sub1
+ test $? = 1'
+
+test_expect_success 'check if git diff works for subproject elements' \
+ 'git diff --exit-code HEAD^ HEAD
+ test $? = 1'
+
+test_expect_success 'check if clone works' \
+ 'git ls-files -s >expected &&
+ git clone -l -s . cloned &&
+ ( cd cloned && git ls-files -s ) >current &&
+ git diff expected current'
+
+test_expect_success 'removing and adding subproject' \
+ 'git update-index --force-remove -- sub2 &&
+ mv sub2 sub3 &&
+ git add sub3 &&
+ git commit -q -m "renaming a subproject" && {
+ git diff -M --name-status --exit-code HEAD^ HEAD
+ test $? = 1
+ }'
+
+# the index must contain the object name the HEAD of the
+# subproject sub1 was at the point "save"
+test_expect_success 'checkout in superproject' \
+ 'git checkout save &&
+ git diff-index --exit-code --raw --cached save -- sub1'
+
+# just interesting what happened...
+# git diff --name-status -M save master
+
+test_done