Re: [PATCH v5 3/9] tests: new test for orderfile options

> The test is very basic and can be extended.
> Couldn't find a good existing place to put it,
> so created a new file.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  t/t4056-diff-order.sh | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100755 t/t4056-diff-order.sh
>
> diff --git a/t/t4056-diff-order.sh b/t/t4056-diff-order.sh
> new file mode 100755
> index 0000000..0404f50

> --- /dev/null
> +++ b/t/t4056-diff-order.sh
> @@ -0,0 +1,63 @@
> +#!/bin/sh
> +
> +test_description='diff orderfile'
> +
> +. ./test-lib.sh
> +
> +test_expect_success 'setup' '
> +	as="a a a a a a a a" && # eight a
> +	test_write_lines $as >foo &&
> +	test_write_lines $as >bar &&
> +	git add foo bar &&
> +	git commit -a -m initial &&
> +	test_write_lines $as b >foo &&
> +	test_write_lines $as b >bar &&
> +	git commit -a -m first &&
> +	test_write_lines bar foo >bar-then-foo &&
> +	test_write_lines foo bar >foo-then-bar &&
> +	git diff -Ofoo-then-bar HEAD~1..HEAD >diff-foo-then-bar &&
> +	git diff -Obar-then-foo HEAD~1..HEAD >diff-bar-then-foo
> +'
> +
> +test_diff_well_formed () {
> +	grep ^+b "$1" >added
> +	grep ^-b "$1" >removed
> +	grep ^+++ "$1" >oldfiles
> +	grep ^--- "$1" >newfiles
> +	test_line_count = 2 added &&
> +	test_line_count = 0 removed &&
> +	test_line_count = 2 oldfiles &&
> +	test_line_count = 2 newfiles
> +}
> +
> +test_expect_success 'diff output with -O is well-formed' '
> +	test_diff_well_formed diff-foo-then-bar &&
> +	test_diff_well_formed diff-bar-then-foo
> +'
> +
> +test_expect_success 'flag -O affects diff output' '
> +	! test_cmp diff-foo-then-bar diff-bar-then-foo
> +'
> +
> +test_expect_success 'orderfile is same as -O' '
> +	test_config diff.orderfile foo-then-bar &&
> +	git diff HEAD~1..HEAD >diff-foo-then-bar-config &&
> +	test_config diff.orderfile bar-then-foo &&
> +	git diff HEAD~1..HEAD >diff-bar-then-foo-config &&
> +	test_cmp diff-foo-then-bar diff-foo-then-bar-config &&
> +	test_cmp diff-bar-then-foo diff-bar-then-foo-config
> +'
> +
> +test_expect_success '-O overrides orderfile' '
> +	test_config diff.orderfile foo-then-bar &&
> +	git diff -Obar-then-foo HEAD~1..HEAD >diff-bar-then-foo-flag &&
> +	test_cmp diff-bar-then-foo diff-bar-then-foo-flag
> +'
> +
> +test_expect_success '/dev/null is same as no orderfile' '
> +	git diff -O/dev/null HEAD~1..HEAD>diff-null-orderfile &&
> +	git diff HEAD~1..HEAD >diff-default &&
> +	test_cmp diff-null-orderfile diff-default
> +'
> +
> +test_done