2871f4d447
There are situations where the user might not want the default setting where patch-id strips all whitespace. They might be working in a language where white space is syntactically important, or they might have CI testing that enforces strict whitespace linting. In these cases, a whitespace change would result in the patch fundamentally changing, and thus deserving of a different id. Add a new mode that is exclusive of --stable and --unstable called --verbatim. It also corresponds to the config patchid.verbatim = true. In this mode, the stable algorithm is used and whitespace is not stripped from the patch text. Users of --unstable mainly care about compatibility with old git versions, which unstripping the whitespace would break. Thus there isn't a usecase for the combination of --verbatim and --unstable, and we don't expose this so as to not add maintainence burden. Signed-off-by: Jerry Zhang <jerry@skydio.com> fixes https://github.com/Skydio/revup/issues/2 Signed-off-by: Junio C Hamano <gitster@pobox.com>
314 lines
7.6 KiB
Bash
Executable File
314 lines
7.6 KiB
Bash
Executable File
#!/bin/sh
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test_description='git patch-id'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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test_expect_success 'setup' '
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str="ab cd ef gh ij kl mn op" &&
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test_write_lines $str >foo &&
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test_write_lines $str >bar &&
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git add foo bar &&
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git commit -a -m initial &&
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test_write_lines $str b >foo &&
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test_write_lines $str b >bar &&
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git commit -a -m first &&
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git checkout -b same main &&
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git commit --amend -m same-msg &&
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git checkout -b notsame main &&
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echo c >foo &&
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echo c >bar &&
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git commit --amend -a -m notsame-msg &&
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git checkout -b with_space main~ &&
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cat >foo <<-\EOF &&
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a b
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c d
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e f
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g h
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i j
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k l
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m n
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op
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EOF
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cp foo bar &&
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git add foo bar &&
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git commit --amend -m "with spaces" &&
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test_write_lines bar foo >bar-then-foo &&
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test_write_lines foo bar >foo-then-bar
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'
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test_expect_success 'patch-id output is well-formed' '
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git log -p -1 >log.output &&
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git patch-id <log.output >output &&
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grep "^$OID_REGEX $(git rev-parse HEAD)$" output
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'
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#calculate patch id. Make sure output is not empty.
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calc_patch_id () {
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patch_name="$1"
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shift
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git patch-id "$@" >patch-id.output &&
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sed "s/ .*//" patch-id.output >patch-id_"$patch_name" &&
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test_line_count -eq 1 patch-id_"$patch_name"
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}
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get_top_diff () {
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git log -p -1 "$@" -O bar-then-foo --full-index --
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}
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get_patch_id () {
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get_top_diff "$1" >top-diff.output &&
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calc_patch_id <top-diff.output "$@"
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}
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test_expect_success 'patch-id detects equality' '
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get_patch_id main &&
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get_patch_id same &&
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test_cmp patch-id_main patch-id_same
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'
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test_expect_success 'patch-id detects inequality' '
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get_patch_id main &&
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get_patch_id notsame &&
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! test_cmp patch-id_main patch-id_notsame
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'
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test_expect_success 'patch-id detects equality binary' '
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cat >.gitattributes <<-\EOF &&
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foo binary
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bar binary
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EOF
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get_patch_id main &&
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get_patch_id same &&
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git log -p -1 --binary main >top-diff.output &&
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calc_patch_id <top-diff.output main_binpatch &&
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git log -p -1 --binary same >top-diff.output &&
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calc_patch_id <top-diff.output same_binpatch &&
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test_cmp patch-id_main patch-id_main_binpatch &&
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test_cmp patch-id_same patch-id_same_binpatch &&
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test_cmp patch-id_main patch-id_same &&
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test_when_finished "rm .gitattributes"
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'
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test_expect_success 'patch-id detects inequality binary' '
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cat >.gitattributes <<-\EOF &&
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foo binary
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bar binary
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EOF
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get_patch_id main &&
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get_patch_id notsame &&
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! test_cmp patch-id_main patch-id_notsame &&
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test_when_finished "rm .gitattributes"
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'
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test_expect_success 'patch-id supports git-format-patch output' '
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get_patch_id main &&
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git checkout same &&
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git format-patch -1 --stdout >format-patch.output &&
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calc_patch_id same <format-patch.output &&
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test_cmp patch-id_main patch-id_same &&
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set $(git patch-id <format-patch.output) &&
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test "$2" = $(git rev-parse HEAD)
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'
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test_expect_success 'whitespace is irrelevant in footer' '
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get_patch_id main &&
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git checkout same &&
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git format-patch -1 --stdout >format-patch.output &&
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sed "s/ \$//" format-patch.output | calc_patch_id same &&
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test_cmp patch-id_main patch-id_same
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'
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cmp_patch_id () {
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if
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test "$1" = "relevant"
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then
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! test_cmp patch-id_"$2" patch-id_"$3"
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else
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test_cmp patch-id_"$2" patch-id_"$3"
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fi
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}
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test_patch_id_file_order () {
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relevant="$1"
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shift
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name="order-${1}-$relevant"
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shift
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get_top_diff "main" >top-diff.output &&
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calc_patch_id <top-diff.output "$name" "$@" &&
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git checkout same &&
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git format-patch -1 --stdout -O foo-then-bar >format-patch.output &&
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calc_patch_id <format-patch.output "ordered-$name" "$@" &&
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cmp_patch_id $relevant "$name" "ordered-$name"
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}
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test_patch_id_whitespace () {
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relevant="$1"
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shift
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name="ws-${1}-$relevant"
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shift
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get_top_diff "main~" >top-diff.output &&
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calc_patch_id <top-diff.output "$name" "$@" &&
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get_top_diff "with_space" >top-diff.output &&
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calc_patch_id <top-diff.output "ws-$name" "$@" &&
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cmp_patch_id $relevant "$name" "ws-$name"
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}
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# combined test for options: add more tests here to make them
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# run with all options
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test_patch_id () {
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test_patch_id_file_order "$@"
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}
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# small tests with detailed diagnostic for basic options.
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test_expect_success 'file order is irrelevant with --stable' '
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test_patch_id_file_order irrelevant --stable --stable
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'
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test_expect_success 'file order is relevant with --unstable' '
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test_patch_id_file_order relevant --unstable --unstable
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'
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test_expect_success 'whitespace is relevant with --verbatim' '
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test_patch_id_whitespace relevant --verbatim --verbatim
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'
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test_expect_success 'whitespace is irrelevant without --verbatim' '
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test_patch_id_whitespace irrelevant --stable --stable
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'
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#Now test various option combinations.
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test_expect_success 'default is unstable' '
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test_patch_id relevant default
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'
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test_expect_success 'patchid.stable = true is stable' '
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test_config patchid.stable true &&
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test_patch_id irrelevant patchid.stable=true
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'
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test_expect_success 'patchid.stable = false is unstable' '
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test_config patchid.stable false &&
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test_patch_id relevant patchid.stable=false
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'
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test_expect_success 'patchid.verbatim = true is correct and stable' '
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test_config patchid.verbatim true &&
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test_patch_id_whitespace relevant patchid.verbatim=true &&
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test_patch_id irrelevant patchid.verbatim=true
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'
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test_expect_success 'patchid.verbatim = false is unstable' '
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test_config patchid.verbatim false &&
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test_patch_id relevant patchid.verbatim=false
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'
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test_expect_success '--unstable overrides patchid.stable = true' '
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test_config patchid.stable true &&
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test_patch_id relevant patchid.stable=true--unstable --unstable
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'
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test_expect_success '--stable overrides patchid.stable = false' '
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test_config patchid.stable false &&
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test_patch_id irrelevant patchid.stable=false--stable --stable
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'
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test_expect_success '--verbatim overrides patchid.stable = false' '
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test_config patchid.stable false &&
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test_patch_id_whitespace relevant stable=false--verbatim --verbatim
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'
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test_expect_success 'patch-id supports git-format-patch MIME output' '
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get_patch_id main &&
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git checkout same &&
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git format-patch -1 --attach --stdout >format-patch.output &&
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calc_patch_id <format-patch.output same &&
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test_cmp patch-id_main patch-id_same
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'
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test_expect_success 'patch-id respects config from subdir' '
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test_config patchid.stable true &&
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mkdir subdir &&
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# copy these because test_patch_id() looks for them in
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# the current directory
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cp bar-then-foo foo-then-bar subdir &&
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(
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cd subdir &&
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test_patch_id irrelevant patchid.stable=true
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)
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'
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test_expect_success 'patch-id handles no-nl-at-eof markers' '
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cat >nonl <<-\EOF &&
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diff --git i/a w/a
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index e69de29..2e65efe 100644
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--- i/a
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+++ w/a
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@@ -0,0 +1 @@
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+a
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\ No newline at end of file
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diff --git i/b w/b
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index e69de29..6178079 100644
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--- i/b
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+++ w/b
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@@ -0,0 +1 @@
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+b
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EOF
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cat >withnl <<-\EOF &&
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diff --git i/a w/a
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index e69de29..7898192 100644
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--- i/a
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+++ w/a
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@@ -0,0 +1 @@
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+a
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diff --git i/b w/b
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index e69de29..6178079 100644
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--- i/b
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+++ w/b
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@@ -0,0 +1 @@
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+b
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EOF
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calc_patch_id nonl <nonl &&
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calc_patch_id withnl <withnl &&
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test_cmp patch-id_nonl patch-id_withnl &&
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calc_patch_id nonl-inc-ws --verbatim <nonl &&
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calc_patch_id withnl-inc-ws --verbatim <withnl &&
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! test_cmp patch-id_nonl-inc-ws patch-id_withnl-inc-ws
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'
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test_expect_success 'patch-id handles diffs with one line of before/after' '
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cat >diffu1 <<-\EOF &&
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diff --git a/bar b/bar
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index bdaf90f..31051f6 100644
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--- a/bar
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+++ b/bar
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@@ -2 +2,2 @@
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b
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+c
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diff --git a/car b/car
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index 00750ed..2ae5e34 100644
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--- a/car
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+++ b/car
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@@ -1 +1,2 @@
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3
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+d
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diff --git a/foo b/foo
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index e439850..7146eb8 100644
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--- a/foo
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+++ b/foo
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@@ -2 +2,2 @@
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a
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+e
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EOF
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calc_patch_id diffu1 <diffu1 &&
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test_config patchid.stable true &&
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calc_patch_id diffu1stable <diffu1
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'
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test_done
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