test-lib: allow negation of prerequisites

diff --git a/t/t4041-diff-submodule-option.sh b/t/t4041-diff-submodule-option.sh
index 8e391cf9a72c6518217526155cbea93d74b9e626..6c01d0c056e2608393ed16eea29dd45fc79d786c 100755 (executable)
--- a/t/t4041-diff-submodule-option.sh
+++ b/t/t4041-diff-submodule-option.sh
@@ -37,9 +37,10 @@ head1=$(add_file sm1 foo1 foo2)
 test_expect_success 'added submodule' "
        git add sm1 &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 0000000...$head1 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 commit_file sm1 &&
@@ -47,33 +48,36 @@ head2=$(add_file sm1 foo3)
 
 test_expect_success 'modified submodule(forward)' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head1..$head2:
   > Add foo3
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule(forward)' "
        git diff --submodule=log >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head1..$head2:
   > Add foo3
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule(forward) --submodule' "
        git diff --submodule >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head1..$head2:
   > Add foo3
 EOF
+       test_cmp expected actual
 "
 
 fullhead1=$(cd sm1; git rev-list --max-count=1 $head1)
 fullhead2=$(cd sm1; git rev-list --max-count=1 $head2)
 test_expect_success 'modified submodule(forward) --submodule=short' "
        git diff --submodule=short >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 diff --git a/sm1 b/sm1
 index $head1..$head2 160000
 --- a/sm1
@@ -82,34 +86,38 @@ index $head1..$head2 160000
 -Subproject commit $fullhead1
 +Subproject commit $fullhead2
 EOF
+       test_cmp expected actual
 "
 
 commit_file sm1 &&
-cd sm1 &&
-git reset --hard HEAD~2 >/dev/null &&
-head3=$(git rev-parse --verify HEAD | cut -c1-7) &&
-cd ..
+head3=$(
+       cd sm1 &&
+       git reset --hard HEAD~2 >/dev/null &&
+       git rev-parse --verify HEAD | cut -c1-7
+)
 
 test_expect_success 'modified submodule(backward)' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head2..$head3 (rewind):
   < Add foo3
   < Add foo2
 EOF
+       test_cmp expected actual
 "
 
 head4=$(add_file sm1 foo4 foo5) &&
 head4_full=$(GIT_DIR=sm1/.git git rev-parse --verify HEAD)
 test_expect_success 'modified submodule(backward and forward)' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head2...$head4:
   > Add foo5
   > Add foo4
   < Add foo3
   < Add foo2
 EOF
+       test_cmp expected actual
 "
 
 commit_file sm1 &&
@@ -122,7 +130,7 @@ mv sm1-bak sm1
 
 test_expect_success 'typechanged submodule(submodule->blob), --cached' "
        git diff --submodule=log --cached >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 41fbea9...0000000 (submodule deleted)
 diff --git a/sm1 b/sm1
 new file mode 100644
@@ -132,11 +140,12 @@ index 0000000..9da5fb8
 @@ -0,0 +1 @@
 +sm1
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'typechanged submodule(submodule->blob)' "
        git diff --submodule=log >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 diff --git a/sm1 b/sm1
 deleted file mode 100644
 index 9da5fb8..0000000
@@ -146,13 +155,14 @@ index 9da5fb8..0000000
 -sm1
 Submodule sm1 0000000...$head4 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 rm -rf sm1 &&
 git checkout-index sm1
 test_expect_success 'typechanged submodule(submodule->blob)' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head4...0000000 (submodule deleted)
 diff --git a/sm1 b/sm1
 new file mode 100644
@@ -162,6 +172,7 @@ index 0000000..$head5
 @@ -0,0 +1 @@
 +sm1
 EOF
+       test_cmp expected actual
 "
 
 rm -f sm1 &&
@@ -170,15 +181,16 @@ head6=$(add_file sm1 foo6 foo7)
 fullhead6=$(cd sm1; git rev-list --max-count=1 $head6)
 test_expect_success 'nonexistent commit' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head4...$head6 (commits not present)
 EOF
+       test_cmp expected actual
 "
 
 commit_file
 test_expect_success 'typechanged submodule(blob->submodule)' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 diff --git a/sm1 b/sm1
 deleted file mode 100644
 index $head5..0000000
@@ -188,21 +200,24 @@ index $head5..0000000
 -sm1
 Submodule sm1 0000000...$head6 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 commit_file sm1 &&
 test_expect_success 'submodule is up to date' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'submodule contains untracked content' "
        echo new > sm1/new-file &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains untracked content
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'submodule contains untracked content (untracked ignored)' "
@@ -223,18 +238,20 @@ test_expect_success 'submodule contains untracked content (all ignored)' "
 test_expect_success 'submodule contains untracked and modifed content' "
        echo new > sm1/foo6 &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains untracked content
 Submodule sm1 contains modified content
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'submodule contains untracked and modifed content (untracked ignored)' "
        echo new > sm1/foo6 &&
        git diff-index -p --ignore-submodules=untracked --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains modified content
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'submodule contains untracked and modifed content (dirty ignored)' "
@@ -252,45 +269,50 @@ test_expect_success 'submodule contains untracked and modifed content (all ignor
 test_expect_success 'submodule contains modifed content' "
        rm -f sm1/new-file &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains modified content
 EOF
+       test_cmp expected actual
 "
 
 (cd sm1; git commit -mchange foo6 >/dev/null) &&
 head8=$(cd sm1; git rev-parse --verify HEAD | cut -c1-7) &&
 test_expect_success 'submodule is modified' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked content' "
        echo new > sm1/new-file &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains untracked content
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked content (untracked ignored)' "
        git diff-index -p --ignore-submodules=untracked --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked content (dirty ignored)' "
        git diff-index -p --ignore-submodules=dirty --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked content (all ignored)' "
@@ -301,31 +323,34 @@ test_expect_success 'modified submodule contains untracked content (all ignored)
 test_expect_success 'modified submodule contains untracked and modifed content' "
        echo modification >> sm1/foo6 &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains untracked content
 Submodule sm1 contains modified content
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked and modifed content (untracked ignored)' "
        echo modification >> sm1/foo6 &&
        git diff-index -p --ignore-submodules=untracked --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains modified content
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked and modifed content (dirty ignored)' "
        echo modification >> sm1/foo6 &&
        git diff-index -p --ignore-submodules=dirty --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'modified submodule contains untracked and modifed content (all ignored)' "
@@ -337,19 +362,21 @@ test_expect_success 'modified submodule contains untracked and modifed content (
 test_expect_success 'modified submodule contains modifed content' "
        rm -f sm1/new-file &&
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 contains modified content
 Submodule sm1 $head6..$head8:
   > change
 EOF
+       test_cmp expected actual
 "
 
 rm -rf sm1
 test_expect_success 'deleted submodule' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6...0000000 (submodule deleted)
 EOF
+       test_cmp expected actual
 "
 
 test_create_repo sm2 &&
@@ -358,41 +385,45 @@ git add sm2
 
 test_expect_success 'multiple submodules' "
        git diff-index -p --submodule=log HEAD >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6...0000000 (submodule deleted)
 Submodule sm2 0000000...$head7 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'path filter' "
        git diff-index -p --submodule=log HEAD sm2 >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm2 0000000...$head7 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 commit_file sm2
 test_expect_success 'given commit' "
        git diff-index -p --submodule=log HEAD^ >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6...0000000 (submodule deleted)
 Submodule sm2 0000000...$head7 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'given commit --submodule' "
        git diff-index -p --submodule HEAD^ >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6...0000000 (submodule deleted)
 Submodule sm2 0000000...$head7 (new submodule)
 EOF
+       test_cmp expected actual
 "
 
 fullhead7=$(cd sm2; git rev-list --max-count=1 $head7)
 
 test_expect_success 'given commit --submodule=short' "
        git diff-index -p --submodule=short HEAD^ >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 diff --git a/sm1 b/sm1
 deleted file mode 160000
 index $head6..0000000
@@ -408,6 +439,7 @@ index 0000000..$head7
 @@ -0,0 +1 @@
 +Subproject commit $fullhead7
 EOF
+       test_cmp expected actual
 "
 
 test_expect_success 'setup .git file for sm2' '
@@ -419,10 +451,45 @@ test_expect_success 'setup .git file for sm2' '
 
 test_expect_success 'diff --submodule with .git file' '
        git diff --submodule HEAD^ >actual &&
-       diff actual - <<-EOF
+       cat >expected <<-EOF &&
 Submodule sm1 $head6...0000000 (submodule deleted)
 Submodule sm2 0000000...$head7 (new submodule)
 EOF
+       test_cmp expected actual
+'
+
+test_expect_success 'diff --submodule with objects referenced by alternates' '
+       mkdir sub_alt &&
+       (cd sub_alt &&
+               git init &&
+               echo a >a &&
+               git add a &&
+               git commit -m a
+       ) &&
+       mkdir super &&
+       (cd super &&
+               git clone -s ../sub_alt sub &&
+               git init &&
+               git add sub &&
+               git commit -m "sub a"
+       ) &&
+       (cd sub_alt &&
+               sha1_before=$(git rev-parse --short HEAD)
+               echo b >b &&
+               git add b &&
+               git commit -m b
+               sha1_after=$(git rev-parse --short HEAD)
+               echo "Submodule sub $sha1_before..$sha1_after:
+  > b" >../expected
+       ) &&
+       (cd super &&
+               (cd sub &&
+                       git fetch &&
+                       git checkout origin/master
+               ) &&
+               git diff --submodule > ../actual
+       )
+       test_cmp expected actual
 '
 
 test_done