t3507: introduce pristine-detach helper

All the tests in t3507 (cherry-pick with conflicts) begin with the
same checkout + read-tree + clean incantation to ensure a predictable
starting point.  Factor out a function for that so the interesting
part of the tests is easier to read.

The "update-index --refresh" and "diff-index --exit-code HEAD" are not
necessary as the point of this testsuite is not about testing
"read-tree --reset".

Improved-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3507-cherry-pick-conflict.sh b/t/t3507-cherry-pick-conflict.sh
index 607bf25d8ff7720407c2b15e4808c575b5f36093..2313d79bd417858911a9efbf99adaa57f03b5bd0 100755 (executable)
--- a/t/t3507-cherry-pick-conflict.sh
+++ b/t/t3507-cherry-pick-conflict.sh
@@ -11,6 +11,18 @@ test_description='test cherry-pick and revert with conflicts
 
 . ./test-lib.sh
 
+test_cmp_rev () {
+       git rev-parse --verify "$1" >expect.rev &&
+       git rev-parse --verify "$2" >actual.rev &&
+       test_cmp expect.rev actual.rev
+}
+
+pristine_detach () {
+       git checkout -f "$1^0" &&
+       git read-tree -u --reset HEAD &&
+       git clean -d -f -f -q -x
+}
+
 test_expect_success setup '
 
        echo unrelated >unrelated &&
@@ -23,13 +35,7 @@ test_expect_success setup '
 '
 
 test_expect_success 'failed cherry-pick does not advance HEAD' '
-
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
-
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
+       pristine_detach initial &&
 
        head=$(git rev-parse HEAD) &&
        test_must_fail git cherry-pick picked &&
@@ -39,12 +45,7 @@ test_expect_success 'failed cherry-pick does not advance HEAD' '
 '
 
 test_expect_success 'advice from failed cherry-pick' "
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
-
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
+       pristine_detach initial &&
 
        picked=\$(git rev-parse --short picked) &&
        cat <<-EOF >expected &&
@@ -59,13 +60,7 @@ test_expect_success 'advice from failed cherry-pick' "
 "
 
 test_expect_success 'failed cherry-pick produces dirty index' '
-
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
-
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
+       pristine_detach initial &&
 
        test_must_fail git cherry-pick picked &&
 
@@ -74,9 +69,7 @@ test_expect_success 'failed cherry-pick produces dirty index' '
 '
 
 test_expect_success 'failed cherry-pick registers participants in index' '
-
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
+       pristine_detach initial &&
        {
                git checkout base -- foo &&
                git ls-files --stage foo &&
@@ -90,10 +83,7 @@ test_expect_success 'failed cherry-pick registers participants in index' '
                2 s/ 0  / 2     /
                3 s/ 0  / 3     /
        " < stages > expected &&
-       git checkout -f initial^0 &&
-
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
+       git read-tree -u --reset HEAD &&
 
        test_must_fail git cherry-pick picked &&
        git ls-files --stage --unmerged > actual &&
@@ -102,10 +92,7 @@ test_expect_success 'failed cherry-pick registers participants in index' '
 '
 
 test_expect_success 'failed cherry-pick describes conflict in work tree' '
-
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
+       pristine_detach initial &&
        cat <<-EOF > expected &&
        <<<<<<< HEAD
        a
@@ -114,9 +101,6 @@ test_expect_success 'failed cherry-pick describes conflict in work tree' '
        >>>>>>> objid picked
        EOF
 
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
-
        test_must_fail git cherry-pick picked &&
 
        sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
@@ -124,11 +108,8 @@ test_expect_success 'failed cherry-pick describes conflict in work tree' '
 '
 
 test_expect_success 'diff3 -m style' '
-
+       pristine_detach initial &&
        git config merge.conflictstyle diff3 &&
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
        cat <<-EOF > expected &&
        <<<<<<< HEAD
        a
@@ -139,9 +120,6 @@ test_expect_success 'diff3 -m style' '
        >>>>>>> objid picked
        EOF
 
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
-
        test_must_fail git cherry-pick picked &&
 
        sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
@@ -149,10 +127,8 @@ test_expect_success 'diff3 -m style' '
 '
 
 test_expect_success 'revert also handles conflicts sanely' '
-
        git config --unset merge.conflictstyle &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
+       pristine_detach initial &&
        cat <<-EOF > expected &&
        <<<<<<< HEAD
        a
@@ -173,10 +149,7 @@ test_expect_success 'revert also handles conflicts sanely' '
                2 s/ 0  / 2     /
                3 s/ 0  / 3     /
        " < stages > expected-stages &&
-       git checkout -f initial^0 &&
-
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
+       git read-tree -u --reset HEAD &&
 
        head=$(git rev-parse HEAD) &&
        test_must_fail git revert picked &&
@@ -192,10 +165,8 @@ test_expect_success 'revert also handles conflicts sanely' '
 '
 
 test_expect_success 'revert conflict, diff3 -m style' '
+       pristine_detach initial &&
        git config merge.conflictstyle diff3 &&
-       git checkout -f initial^0 &&
-       git read-tree -u --reset HEAD &&
-       git clean -d -f -f -q -x &&
        cat <<-EOF > expected &&
        <<<<<<< HEAD
        a
@@ -206,9 +177,6 @@ test_expect_success 'revert conflict, diff3 -m style' '
        >>>>>>> parent of objid picked
        EOF
 
-       git update-index --refresh &&
-       git diff-index --exit-code HEAD &&
-
        test_must_fail git revert picked &&
 
        sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&