t6022: ignoring untracked files by merge-recursive when they do not matter

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/t/t6022-merge-rename.sh b/t/t6022-merge-rename.sh
index 497ef36ad883e79cd799a4642e0c4414d8550e1c..b608e202c18fd545868898fcd0528c3501459b6f 100755 (executable)
--- a/t/t6022-merge-rename.sh
+++ b/t/t6022-merge-rename.sh
@@ -42,15 +42,20 @@ O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
 EOF
 
 git add A M &&
-git commit -m initial &&
+git commit -m "initial has A and M" &&
 git branch white &&
 git branch red &&
 git branch blue &&
+git branch yellow &&
 
 sed -e "/^g /s/.*/g : master changes a line/" <A >A+ &&
 mv A+ A &&
 git commit -a -m "master updates A" &&
 
+git checkout yellow &&
+rm -f M &&
+git commit -a -m "yellow removes M" &&
+
 git checkout white &&
 sed -e "/^g /s/.*/g : white changes a line/" <A >B &&
 sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
@@ -79,27 +84,27 @@ test_expect_success 'pull renaming branch into unrenaming one' \
        git show-branch
        git pull . white && {
                echo "BAD: should have conflicted"
-               exit 1
+               return 1
        }
        git ls-files -s
        test "$(git ls-files -u B | wc -l)" -eq 3 || {
                echo "BAD: should have left stages for B"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -s N | wc -l)" -eq 1 || {
                echo "BAD: should have merged N"
-               exit 1  
+               return 1
        }
        sed -ne "/^g/{
        p
        q
        }" B | grep master || {
                echo "BAD: should have listed our change first"
-               exit 1
+               return 1
        }
        test "$(git diff white N | wc -l)" -eq 0 || {
                echo "BAD: should have taken colored branch"
-               exit 1
+               return 1
        }
 '
 
@@ -110,26 +115,26 @@ test_expect_success 'pull renaming branch into another renaming one' \
        git checkout red
        git pull . white && {
                echo "BAD: should have conflicted"
-               exit 1
+               return 1
        }
        test "$(git ls-files -u B | wc -l)" -eq 3 || {
                echo "BAD: should have left stages"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -s N | wc -l)" -eq 1 || {
                echo "BAD: should have merged N"
-               exit 1  
+               return 1
        }
        sed -ne "/^g/{
        p
        q
        }" B | grep red || {
                echo "BAD: should have listed our change first"
-               exit 1
+               return 1
        }
        test "$(git diff white N | wc -l)" -eq 0 || {
                echo "BAD: should have taken colored branch"
-               exit 1
+               return 1
        }
 '
 
@@ -139,26 +144,26 @@ test_expect_success 'pull unrenaming branch into renaming one' \
        git show-branch
        git pull . master && {
                echo "BAD: should have conflicted"
-               exit 1
+               return 1
        }
        test "$(git ls-files -u B | wc -l)" -eq 3 || {
                echo "BAD: should have left stages"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -s N | wc -l)" -eq 1 || {
                echo "BAD: should have merged N"
-               exit 1  
+               return 1
        }
        sed -ne "/^g/{
        p
        q
        }" B | grep red || {
                echo "BAD: should have listed our change first"
-               exit 1
+               return 1
        }
        test "$(git diff white N | wc -l)" -eq 0 || {
                echo "BAD: should have taken colored branch"
-               exit 1
+               return 1
        }
 '
 
@@ -168,35 +173,149 @@ test_expect_success 'pull conflicting renames' \
        git show-branch
        git pull . blue && {
                echo "BAD: should have conflicted"
-               exit 1
+               return 1
        }
        test "$(git ls-files -u A | wc -l)" -eq 1 || {
                echo "BAD: should have left a stage"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -u B | wc -l)" -eq 1 || {
                echo "BAD: should have left a stage"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -u C | wc -l)" -eq 1 || {
                echo "BAD: should have left a stage"
-               exit 1  
+               return 1
        }
        test "$(git ls-files -s N | wc -l)" -eq 1 || {
                echo "BAD: should have merged N"
-               exit 1  
+               return 1
        }
        sed -ne "/^g/{
        p
        q
        }" B | grep red || {
                echo "BAD: should have listed our change first"
-               exit 1
+               return 1
        }
        test "$(git diff white N | wc -l)" -eq 0 || {
                echo "BAD: should have taken colored branch"
-               exit 1
+               return 1
+       }
+'
+
+test_expect_success 'interference with untracked working tree file' '
+
+       git reset --hard
+       git show-branch
+       echo >A this file should not matter
+       git pull . white && {
+               echo "BAD: should have conflicted"
+               return 1
+       }
+       test -f A || {
+               echo "BAD: should have left A intact"
+               return 1
+       }
+'
+
+test_expect_success 'interference with untracked working tree file' '
+
+       git reset --hard
+       git checkout white
+       git show-branch
+       rm -f A
+       echo >A this file should not matter
+       git pull . red && {
+               echo "BAD: should have conflicted"
+               return 1
+       }
+       test -f A || {
+               echo "BAD: should have left A intact"
+               return 1
+       }
+'
+
+test_expect_success 'interference with untracked working tree file' '
+
+       git reset --hard
+       rm -f A M
+       git checkout -f master
+       git tag -f anchor
+       git show-branch
+       git pull . yellow || {
+               echo "BAD: should have cleanly merged"
+               return 1
+       }
+       test -f M && {
+               echo "BAD: should have removed M"
+               return 1
+       }
+       git reset --hard anchor
+'
+
+test_expect_success 'updated working tree file should prevent the merge' '
+
+       git reset --hard
+       rm -f A M
+       git checkout -f master
+       git tag -f anchor
+       git show-branch
+       echo >>M one line addition
+       cat M >M.saved
+       git pull . yellow && {
+               echo "BAD: should have complained"
+               return 1
+       }
+       diff M M.saved || {
+               echo "BAD: should have left M intact"
+               return 1
+       }
+       rm -f M.saved
+'
+
+test_expect_success 'updated working tree file should prevent the merge' '
+
+       git reset --hard
+       rm -f A M
+       git checkout -f master
+       git tag -f anchor
+       git show-branch
+       echo >>M one line addition
+       cat M >M.saved
+       git update-index M
+       git pull . yellow && {
+               echo "BAD: should have complained"
+               return 1
+       }
+       diff M M.saved || {
+               echo "BAD: should have left M intact"
+               return 1
+       }
+       rm -f M.saved
+'
+
+test_expect_success 'interference with untracked working tree file' '
+
+       git reset --hard
+       rm -f A M
+       git checkout -f yellow
+       git tag -f anchor
+       git show-branch
+       echo >M this file should not matter
+       git pull . master || {
+               echo "BAD: should have cleanly merged"
+               return 1
+       }
+       test -f M || {
+               echo "BAD: should have left M intact"
+               return 1
+       }
+       git ls-files -s | grep M && {
+               echo "BAD: M must be untracked in the result"
+               return 1
        }
+       git reset --hard anchor
 '
 
 test_done