--- /dev/null
+#!/bin/sh
+
+test_description='sparse checkout tests'
+
+. ./test-lib.sh
+
+cat >expected <<EOF
+100644 77f0ba1734ed79d12881f81b36ee134de6a3327b 0 init.t
+100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0 sub/added
+EOF
+test_expect_success 'setup' '
+ test_commit init &&
+ echo modified >> init.t &&
+ mkdir sub &&
+ touch sub/added &&
+ git add init.t sub/added &&
+ git commit -m "modified and added" &&
+ git tag top &&
+ git rm sub/added &&
+ git commit -m removed &&
+ git tag removed &&
+ git checkout top &&
+ git ls-files --stage > result &&
+ test_cmp expected result
+'
+
+cat >expected.swt <<EOF
+H init.t
+H sub/added
+EOF
+test_expect_success 'read-tree without .git/info/sparse-checkout' '
+ git read-tree -m -u HEAD &&
+ git ls-files --stage > result &&
+ test_cmp expected result &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result
+'
+
+test_expect_success 'read-tree with .git/info/sparse-checkout but disabled' '
+ echo > .git/info/sparse-checkout
+ git read-tree -m -u HEAD &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test -f init.t &&
+ test -f sub/added
+'
+
+test_expect_success 'read-tree --no-sparse-checkout with empty .git/info/sparse-checkout and enabled' '
+ git config core.sparsecheckout true &&
+ echo > .git/info/sparse-checkout &&
+ git read-tree --no-sparse-checkout -m -u HEAD &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test -f init.t &&
+ test -f sub/added
+'
+
+cat >expected.swt <<EOF
+S init.t
+S sub/added
+EOF
+test_expect_success 'read-tree with empty .git/info/sparse-checkout' '
+ git config core.sparsecheckout true &&
+ echo > .git/info/sparse-checkout &&
+ git read-tree -m -u HEAD &&
+ git ls-files --stage > result &&
+ test_cmp expected result &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test ! -f init.t &&
+ test ! -f sub/added
+'
+
+cat >expected.swt <<EOF
+S init.t
+H sub/added
+EOF
+test_expect_success 'match directories with trailing slash' '
+ echo sub/ > .git/info/sparse-checkout &&
+ git read-tree -m -u HEAD &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test ! -f init.t &&
+ test -f sub/added
+'
+
+cat >expected.swt <<EOF
+H init.t
+H sub/added
+EOF
+test_expect_failure 'match directories without trailing slash' '
+ echo init.t > .git/info/sparse-checkout &&
+ echo sub >> .git/info/sparse-checkout &&
+ git read-tree -m -u HEAD &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test ! -f init.t &&
+ test -f sub/added
+'
+
+cat >expected.swt <<EOF
+H init.t
+S sub/added
+EOF
+test_expect_success 'checkout area changes' '
+ echo init.t > .git/info/sparse-checkout &&
+ git read-tree -m -u HEAD &&
+ git ls-files -t > result &&
+ test_cmp expected.swt result &&
+ test -f init.t &&
+ test ! -f sub/added
+'
+
+test_expect_success 'read-tree updates worktree, absent case' '
+ echo sub/added > .git/info/sparse-checkout &&
+ git checkout -f top &&
+ git read-tree -m -u HEAD^ &&
+ test ! -f init.t
+'
+
+test_expect_success 'read-tree updates worktree, dirty case' '
+ echo sub/added > .git/info/sparse-checkout &&
+ git checkout -f top &&
+ echo dirty > init.t &&
+ git read-tree -m -u HEAD^ &&
+ grep -q dirty init.t &&
+ rm init.t
+'
+
+test_expect_success 'read-tree removes worktree, dirty case' '
+ echo init.t > .git/info/sparse-checkout &&
+ git checkout -f top &&
+ echo dirty > added &&
+ git read-tree -m -u HEAD^ &&
+ grep -q dirty added
+'
+
+test_expect_success 'read-tree adds to worktree, absent case' '
+ echo init.t > .git/info/sparse-checkout &&
+ git checkout -f removed &&
+ git read-tree -u -m HEAD^ &&
+ test ! -f sub/added
+'
+
+test_expect_success 'read-tree adds to worktree, dirty case' '
+ echo init.t > .git/info/sparse-checkout &&
+ git checkout -f removed &&
+ mkdir sub &&
+ echo dirty > sub/added &&
+ git read-tree -u -m HEAD^ &&
+ grep -q dirty sub/added
+'
+
+test_done