#!/bin/sh

test_description='git add -u

This test creates a working tree state with three files:

  top (previously committed, modified)
  dir/sub (previously committed, modified)
  dir/other (untracked)

and issues a git add -u with path limiting on "dir" to add
only the updates to dir/sub.

Also tested are "git add -u" without limiting, and "git add -u"
without contents changes, and other conditions'

. ./test-lib.sh

test_expect_success setup '
        echo initial >check &&
        echo initial >top &&
        echo initial >foo &&
        mkdir dir1 dir2 &&
        echo initial >dir1/sub1 &&
        echo initial >dir1/sub2 &&
        echo initial >dir2/sub3 &&
        git add check dir1 dir2 top foo &&
        test_tick
        git commit -m initial &&

        echo changed >check &&
        echo changed >top &&
        echo changed >dir2/sub3 &&
        rm -f dir1/sub1 &&
        echo other >dir2/other
'

test_expect_success update '
        git add -u dir1 dir2
'

test_expect_success 'update noticed a removal' '
        test "$(git ls-files dir1/sub1)" = ""
'

test_expect_success 'update touched correct path' '
        test "$(git diff-files --name-status dir2/sub3)" = ""
'

test_expect_success 'update did not touch other tracked files' '
        test "$(git diff-files --name-status check)" = "M       check" &&
        test "$(git diff-files --name-status top)" = "M top"
'

test_expect_success 'update did not touch untracked files' '
        test "$(git ls-files dir2/other)" = ""
'

test_expect_success 'cache tree has not been corrupted' '

        git ls-files -s |
        sed -e "s/ 0    /       /" >expect &&
        git ls-tree -r $(git write-tree) |
        sed -e "s/ blob / /" >current &&
        test_cmp expect current

'

test_expect_success 'update from a subdirectory' '
        (
                cd dir1 &&
                echo more >sub2 &&
                git add -u sub2
        )
'

test_expect_success 'change gets noticed' '

        test "$(git diff-files --name-status dir1)" = ""

'

test_expect_success SYMLINKS 'replace a file with a symlink' '

        rm foo &&
        ln -s top foo &&
        git add -u -- foo

'

test_expect_success 'add everything changed' '

        git add -u &&
        test -z "$(git diff-files)"

'

test_expect_success 'touch and then add -u' '

        touch check &&
        git add -u &&
        test -z "$(git diff-files)"

'

test_expect_success 'touch and then add explicitly' '

        touch check &&
        git add check &&
        test -z "$(git diff-files)"

'

test_expect_success 'add -n -u should not add but just report' '

        (
                echo "add '\''check'\''" &&
                echo "remove '\''top'\''"
        ) >expect &&
        before=$(git ls-files -s check top) &&
        echo changed >>check &&
        rm -f top &&
        git add -n -u >actual &&
        after=$(git ls-files -s check top) &&

        test "$before" = "$after" &&
        test_cmp expect actual

'

test_expect_success 'add -u resolves unmerged paths' '
        git reset --hard &&
        one=$(echo 1 | git hash-object -w --stdin) &&
        two=$(echo 2 | git hash-object -w --stdin) &&
        three=$(echo 3 | git hash-object -w --stdin) &&
        {
                for path in path1 path2
                do
                        echo "100644 $one 1     $path"
                        echo "100644 $two 2     $path"
                        echo "100644 $three 3   $path"
                done
                echo "100644 $one 1     path3"
                echo "100644 $one 1     path4"
                echo "100644 $one 3     path5"
                echo "100644 $one 3     path6"
        } |
        git update-index --index-info &&
        echo 3 >path1 &&
        echo 2 >path3 &&
        echo 2 >path5 &&
        git add -u &&
        git ls-files -s path1 path2 path3 path4 path5 path6 >actual &&
        {
                echo "100644 $three 0   path1"
                echo "100644 $one 1     path3"
                echo "100644 $one 1     path4"
                echo "100644 $one 3     path5"
                echo "100644 $one 3     path6"
        } >expect &&
        test_cmp expect actual &&

        # Bonus tests.  Explicit resolving
        git add path3 path5 &&
        test_must_fail git add path4 &&
        test_must_fail git add path6 &&
        git rm path4 &&
        git rm path6 &&

        git ls-files -s "path?" >actual &&
        {
                echo "100644 $three 0   path1"
                echo "100644 $two 0     path3"
                echo "100644 $two 0     path5"
        } >expect

'

test_expect_success '"add -u non-existent" should fail' '
        test_must_fail git add -u non-existent &&
        ! (git ls-files | grep "non-existent")
'

test_done