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+#!/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