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-rwxr-xr-xt/t4060-diff-submodule-option-diff-format.sh976
1 files changed, 976 insertions, 0 deletions
diff --git a/t/t4060-diff-submodule-option-diff-format.sh b/t/t4060-diff-submodule-option-diff-format.sh
new file mode 100755
index 0000000..97c6424
--- /dev/null
+++ b/t/t4060-diff-submodule-option-diff-format.sh
@@ -0,0 +1,976 @@
+#!/bin/sh
+#
+# Copyright (c) 2009 Jens Lehmann, based on t7401 by Ping Yin
+# Copyright (c) 2011 Alexey Shumkin (+ non-UTF-8 commit encoding tests)
+# Copyright (c) 2016 Jacob Keller (copy + convert to --submodule=diff)
+#
+
+test_description='Support for diff format verbose submodule difference in git diff
+
+This test tries to verify the sanity of --submodule=diff option of git diff.
+'
+
+. ./test-lib.sh
+
+# Tested non-UTF-8 encoding
+test_encoding="ISO8859-1"
+
+# String "added" in German (translated with Google Translate), encoded in UTF-8,
+# used in sample commit log messages in add_file() function below.
+added=$(printf "hinzugef\303\274gt")
+
+add_file () {
+ (
+ cd "$1" &&
+ shift &&
+ for name
+ do
+ echo "$name" >"$name" &&
+ git add "$name" &&
+ test_tick &&
+ # "git commit -m" would break MinGW, as Windows refuse to pass
+ # $test_encoding encoded parameter to git.
+ echo "Add $name ($added $name)" | iconv -f utf-8 -t $test_encoding |
+ git -c "i18n.commitEncoding=$test_encoding" commit -F -
+ done >/dev/null &&
+ git rev-parse --short --verify HEAD
+ )
+}
+
+commit_file () {
+ test_tick &&
+ git commit "$@" -m "Commit $*" >/dev/null
+}
+
+diff_cmp () {
+ for i in "$1" "$2"
+ do
+ sed -e 's/^index 0000000\.\.[0-9a-f]*/index 0000000..1234567/' \
+ -e 's/^index [0-9a-f]*\.\.[0-9a-f]*/index 1234567..89abcde/' \
+ "$i" >"$i.compare" || return 1
+ done &&
+ test_cmp "$1.compare" "$2.compare" &&
+ rm -f "$1.compare" "$2.compare"
+}
+
+test_expect_success 'setup repository' '
+ test_create_repo sm1 &&
+ add_file . foo &&
+ head1=$(add_file sm1 foo1 foo2) &&
+ fullhead1=$(git -C sm1 rev-parse --verify HEAD)
+'
+
+test_expect_success 'added submodule' '
+ git add sm1 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 0000000...$head1 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo2 b/sm1/foo2
+ new file mode 100644
+ index 0000000..54b060e
+ --- /dev/null
+ +++ b/sm1/foo2
+ @@ -0,0 +1 @@
+ +foo2
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'added submodule, set diff.submodule' '
+ test_config diff.submodule log &&
+ git add sm1 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 0000000...$head1 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo2 b/sm1/foo2
+ new file mode 100644
+ index 0000000..54b060e
+ --- /dev/null
+ +++ b/sm1/foo2
+ @@ -0,0 +1 @@
+ +foo2
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success '--submodule=short overrides diff.submodule' '
+ test_config diff.submodule log &&
+ git add sm1 &&
+ git diff --submodule=short --cached >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ new file mode 160000
+ index 0000000..$head1
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +Subproject commit $fullhead1
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'diff.submodule does not affect plumbing' '
+ test_config diff.submodule log &&
+ git diff-index -p HEAD >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ new file mode 160000
+ index 0000000..$head1
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +Subproject commit $fullhead1
+ EOF
+ diff_cmp expected actual
+'
+
+commit_file sm1 &&
+head2=$(add_file sm1 foo3)
+
+test_expect_success 'modified submodule(forward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ diff --git a/sm1/foo3 b/sm1/foo3
+ new file mode 100644
+ index 0000000..c1ec6c6
+ --- /dev/null
+ +++ b/sm1/foo3
+ @@ -0,0 +1 @@
+ +foo3
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule(forward)' '
+ git diff --submodule=diff >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ diff --git a/sm1/foo3 b/sm1/foo3
+ new file mode 100644
+ index 0000000..c1ec6c6
+ --- /dev/null
+ +++ b/sm1/foo3
+ @@ -0,0 +1 @@
+ +foo3
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule(forward) --submodule' '
+ git diff --submodule >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ > Add foo3 ($added foo3)
+ EOF
+ diff_cmp expected actual
+'
+
+fullhead2=$(cd sm1; git rev-parse --verify HEAD)
+test_expect_success 'modified submodule(forward) --submodule=short' '
+ git diff --submodule=short >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ index $head1..$head2 160000
+ --- a/sm1
+ +++ b/sm1
+ @@ -1 +1 @@
+ -Subproject commit $fullhead1
+ +Subproject commit $fullhead2
+ EOF
+ diff_cmp expected actual
+'
+
+commit_file sm1 &&
+head3=$(
+ cd sm1 &&
+ git reset --hard HEAD~2 >/dev/null &&
+ git rev-parse --short --verify HEAD
+)
+
+test_expect_success 'modified submodule(backward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head2..$head3 (rewind):
+ diff --git a/sm1/foo2 b/sm1/foo2
+ deleted file mode 100644
+ index 54b060e..0000000
+ --- a/sm1/foo2
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo2
+ diff --git a/sm1/foo3 b/sm1/foo3
+ deleted file mode 100644
+ index c1ec6c6..0000000
+ --- a/sm1/foo3
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo3
+ EOF
+ diff_cmp expected actual
+'
+
+head4=$(add_file sm1 foo4 foo5)
+test_expect_success 'modified submodule(backward and forward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head2...$head4:
+ diff --git a/sm1/foo2 b/sm1/foo2
+ deleted file mode 100644
+ index 54b060e..0000000
+ --- a/sm1/foo2
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo2
+ diff --git a/sm1/foo3 b/sm1/foo3
+ deleted file mode 100644
+ index c1ec6c6..0000000
+ --- a/sm1/foo3
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo3
+ diff --git a/sm1/foo4 b/sm1/foo4
+ new file mode 100644
+ index 0000000..a0016db
+ --- /dev/null
+ +++ b/sm1/foo4
+ @@ -0,0 +1 @@
+ +foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ new file mode 100644
+ index 0000000..d6f2413
+ --- /dev/null
+ +++ b/sm1/foo5
+ @@ -0,0 +1 @@
+ +foo5
+ EOF
+ diff_cmp expected actual
+'
+
+commit_file sm1 &&
+mv sm1 sm1-bak &&
+echo sm1 >sm1 &&
+head5=$(git hash-object sm1 | cut -c1-7) &&
+git add sm1 &&
+rm -f sm1 &&
+mv sm1-bak sm1
+
+test_expect_success 'typechanged submodule(submodule->blob), --cached' '
+ git diff --submodule=diff --cached >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...0000000 (submodule deleted)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ deleted file mode 100644
+ index 1715acd..0000000
+ --- a/sm1/foo1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo1
+ diff --git a/sm1/foo4 b/sm1/foo4
+ deleted file mode 100644
+ index a0016db..0000000
+ --- a/sm1/foo4
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ deleted file mode 100644
+ index d6f2413..0000000
+ --- a/sm1/foo5
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo5
+ diff --git a/sm1 b/sm1
+ new file mode 100644
+ index 0000000..9da5fb8
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +sm1
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'typechanged submodule(submodule->blob)' '
+ git diff --submodule=diff >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ deleted file mode 100644
+ index 9da5fb8..0000000
+ --- a/sm1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -sm1
+ Submodule sm1 0000000...$head4 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo4 b/sm1/foo4
+ new file mode 100644
+ index 0000000..a0016db
+ --- /dev/null
+ +++ b/sm1/foo4
+ @@ -0,0 +1 @@
+ +foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ new file mode 100644
+ index 0000000..d6f2413
+ --- /dev/null
+ +++ b/sm1/foo5
+ @@ -0,0 +1 @@
+ +foo5
+ EOF
+ diff_cmp expected actual
+'
+
+rm -rf sm1 &&
+git checkout-index sm1
+test_expect_success 'typechanged submodule(submodule->blob)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...0000000 (submodule deleted)
+ diff --git a/sm1 b/sm1
+ new file mode 100644
+ index 0000000..9da5fb8
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +sm1
+ EOF
+ diff_cmp expected actual
+'
+
+rm -f sm1 &&
+test_create_repo sm1 &&
+head6=$(add_file sm1 foo6 foo7)
+test_expect_success 'nonexistent commit' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...$head6 (commits not present)
+ EOF
+ diff_cmp expected actual
+'
+
+commit_file
+test_expect_success 'typechanged submodule(blob->submodule)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ deleted file mode 100644
+ index 9da5fb8..0000000
+ --- a/sm1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -sm1
+ Submodule sm1 0000000...$head6 (new submodule)
+ diff --git a/sm1/foo6 b/sm1/foo6
+ new file mode 100644
+ index 0000000..462398b
+ --- /dev/null
+ +++ b/sm1/foo6
+ @@ -0,0 +1 @@
+ +foo6
+ diff --git a/sm1/foo7 b/sm1/foo7
+ new file mode 100644
+ index 0000000..6e9262c
+ --- /dev/null
+ +++ b/sm1/foo7
+ @@ -0,0 +1 @@
+ +foo7
+ EOF
+ diff_cmp expected actual
+'
+
+commit_file sm1 &&
+test_expect_success 'submodule is up to date' '
+ head7=$(git -C sm1 rev-parse --short --verify HEAD) &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains untracked content' '
+ echo new > sm1/new-file &&
+ git diff-index -p --ignore-submodules=none --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'submodule contains untracked content (untracked ignored)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains untracked content (dirty ignored)' '
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains untracked content (all ignored)' '
+ git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains untracked and modified content' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules=none --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+# NOT OK
+test_expect_success 'submodule contains untracked and modified content (untracked ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'submodule contains untracked and modified content (dirty ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains untracked and modified content (all ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'submodule contains modified content' '
+ rm -f sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+(cd sm1; git commit -mchange foo6 >/dev/null) &&
+head8=$(cd sm1; git rev-parse --short --verify HEAD) &&
+test_expect_success 'submodule is modified' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content' '
+ echo new > sm1/new-file &&
+ git diff-index -p --ignore-submodules=none --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (untracked ignored)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (dirty ignored)' '
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (all ignored)' '
+ git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules=none --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 contains modified content
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..dfda541 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,2 @@
+ -foo6
+ +new
+ +modification
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (untracked ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..e20e2d9 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,3 @@
+ -foo6
+ +new
+ +modification
+ +modification
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (dirty ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (all ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
+ test_must_be_empty actual
+'
+
+# NOT OK
+test_expect_success 'modified submodule contains modified content' '
+ rm -f sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ Submodule sm1 $head7..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..ac466ca 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,5 @@
+ -foo6
+ +new
+ +modification
+ +modification
+ +modification
+ +modification
+ EOF
+ diff_cmp expected actual
+'
+
+rm -rf sm1
+test_expect_success 'deleted submodule' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'create second submodule' '
+ test_create_repo sm2 &&
+ head9=$(add_file sm2 foo8 foo9) &&
+ git add sm2
+'
+
+test_expect_success 'multiple submodules' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 0000000...$head9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'path filter' '
+ git diff-index -p --submodule=diff HEAD sm2 >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm2 0000000...$head9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ diff_cmp expected actual
+'
+
+cat >.gitmodules <<-EOF
+[submodule "sm2"]
+ path = sm2
+ url = bogus_url
+EOF
+git add .gitmodules
+commit_file sm2 .gitmodules
+
+test_expect_success 'given commit' '
+ git diff-index -p --submodule=diff HEAD^ >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/.gitmodules b/.gitmodules
+ new file mode 100644
+ index 1234567..89abcde
+ --- /dev/null
+ +++ b/.gitmodules
+ @@ -0,0 +1,3 @@
+ +[submodule "sm2"]
+ +path = sm2
+ +url = bogus_url
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 0000000...$head9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ diff_cmp expected actual
+'
+
+test_expect_success 'setup .git file for sm2' '
+ git submodule absorbgitdirs sm2
+'
+
+test_expect_success 'diff --submodule=diff with .git file' '
+ git diff --submodule=diff HEAD^ >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/.gitmodules b/.gitmodules
+ new file mode 100644
+ index 1234567..89abcde
+ --- /dev/null
+ +++ b/.gitmodules
+ @@ -0,0 +1,3 @@
+ +[submodule "sm2"]
+ +path = sm2
+ +url = bogus_url
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 0000000...$head9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ diff_cmp expected actual
+'
+
+mv sm2 sm2-bak
+
+test_expect_success 'deleted submodule with .git file' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 $head9...0000000 (submodule deleted)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ deleted file mode 100644
+ index 1234567..89abcde
+ --- a/sm2/foo8
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ deleted file mode 100644
+ index 1234567..89abcde
+ --- a/sm2/foo9
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo9
+ EOF
+ diff_cmp expected actual
+'
+
+echo submodule-to-blob>sm2
+
+test_expect_success 'typechanged(submodule->blob) submodule with .git file' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 $head9...0000000 (submodule deleted)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ deleted file mode 100644
+ index 1234567..89abcde
+ --- a/sm2/foo8
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ deleted file mode 100644
+ index 1234567..89abcde
+ --- a/sm2/foo9
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo9
+ diff --git a/sm2 b/sm2
+ new file mode 100644
+ index 1234567..89abcde
+ --- /dev/null
+ +++ b/sm2
+ @@ -0,0 +1 @@
+ +submodule-to-blob
+ EOF
+ diff_cmp expected actual
+'
+
+rm sm2
+mv sm2-bak sm2
+
+test_expect_success 'setup nested submodule' '
+ git -c protocol.file.allow=always -C sm2 submodule add ../sm2 nested &&
+ git -C sm2 commit -a -m "nested sub" &&
+ head10=$(git -C sm2 rev-parse --short --verify HEAD)
+'
+
+test_expect_success 'move nested submodule HEAD' '
+ echo "nested content" >sm2/nested/file &&
+ git -C sm2/nested add file &&
+ git -C sm2/nested commit --allow-empty -m "new HEAD" &&
+ head11=$(git -C sm2/nested rev-parse --short --verify HEAD)
+'
+
+test_expect_success 'diff --submodule=diff with moved nested submodule HEAD' '
+ cat >expected <<-EOF &&
+ Submodule nested $head9..$head11:
+ diff --git a/nested/file b/nested/file
+ new file mode 100644
+ index 0000000..ca281f5
+ --- /dev/null
+ +++ b/nested/file
+ @@ -0,0 +1 @@
+ +nested content
+ EOF
+ git -C sm2 diff --submodule=diff >actual 2>err &&
+ test_must_be_empty err &&
+ diff_cmp expected actual
+'
+
+test_expect_success 'diff --submodule=diff recurses into nested submodules' '
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 contains modified content
+ Submodule sm2 $head9..$head10:
+ diff --git a/sm2/.gitmodules b/sm2/.gitmodules
+ new file mode 100644
+ index 0000000..3a816b8
+ --- /dev/null
+ +++ b/sm2/.gitmodules
+ @@ -0,0 +1,3 @@
+ +[submodule "nested"]
+ + path = nested
+ + url = ../sm2
+ Submodule nested 0000000...$head11 (new submodule)
+ diff --git a/sm2/nested/file b/sm2/nested/file
+ new file mode 100644
+ index 0000000..ca281f5
+ --- /dev/null
+ +++ b/sm2/nested/file
+ @@ -0,0 +1 @@
+ +nested content
+ diff --git a/sm2/nested/foo8 b/sm2/nested/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/nested/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/nested/foo9 b/sm2/nested/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/nested/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ git diff --submodule=diff >actual 2>err &&
+ test_must_be_empty err &&
+ diff_cmp expected actual
+'
+
+(cd sm2; commit_file nested)
+commit_file sm2
+head12=$(cd sm2; git rev-parse --short --verify HEAD)
+
+mv sm2 sm2-bak
+
+test_expect_success 'diff --submodule=diff recurses into deleted nested submodules' '
+ cat >expected <<-EOF &&
+ Submodule sm1 $head7...0000000 (submodule deleted)
+ Submodule sm2 $head12...0000000 (submodule deleted)
+ diff --git a/sm2/.gitmodules b/sm2/.gitmodules
+ deleted file mode 100644
+ index 3a816b8..0000000
+ --- a/sm2/.gitmodules
+ +++ /dev/null
+ @@ -1,3 +0,0 @@
+ -[submodule "nested"]
+ - path = nested
+ - url = ../sm2
+ diff --git a/sm2/foo8 b/sm2/foo8
+ deleted file mode 100644
+ index db9916b..0000000
+ --- a/sm2/foo8
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ deleted file mode 100644
+ index 9c3b4f6..0000000
+ --- a/sm2/foo9
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo9
+ Submodule nested $head11...0000000 (submodule deleted)
+ diff --git a/sm2/nested/file b/sm2/nested/file
+ deleted file mode 100644
+ index ca281f5..0000000
+ --- a/sm2/nested/file
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -nested content
+ diff --git a/sm2/nested/foo8 b/sm2/nested/foo8
+ deleted file mode 100644
+ index db9916b..0000000
+ --- a/sm2/nested/foo8
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo8
+ diff --git a/sm2/nested/foo9 b/sm2/nested/foo9
+ deleted file mode 100644
+ index 9c3b4f6..0000000
+ --- a/sm2/nested/foo9
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo9
+ EOF
+ git diff --submodule=diff >actual 2>err &&
+ test_must_be_empty err &&
+ diff_cmp expected actual
+'
+
+mv sm2-bak sm2
+
+test_done