mirror of
https://github.com/git/git
synced 2024-09-12 21:04:12 +00:00
250b3c6c99
Originally update-pre-post-images could assume that any whitespace
fixing will make the result only shorter by unexpanding runs of
leading SPs into HTs and removing trailing whitespaces at the end of
lines. Updating the post-image we read from the patch to match the
actual result can be performed in-place under this assumption.
These days, however, we have tab-in-indent (aka Python) rule whose
result can be longer than the original, and we do need to allocate
a larger buffer than the input and replace the result.
Fortunately the support for lengthening rewrite was already added
when we began supporting "match while ignoring whitespace
differences" mode in 86c91f9179 (git apply: option to ignore
whitespace differences, 2009-08-04). We only need to correctly
count the number of bytes necessary to hold the updated result and
tell the function to allocate a new buffer.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
516 lines
12 KiB
Bash
Executable file
516 lines
12 KiB
Bash
Executable file
#!/bin/sh
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test_description='core.whitespace rules and git apply'
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. ./test-lib.sh
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prepare_test_file () {
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# A line that has character X is touched iff RULE is in effect:
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# X RULE
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# ! trailing-space
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# @ space-before-tab
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# # indent-with-non-tab (default tab width 8)
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# = indent-with-non-tab,tabwidth=16
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# % tab-in-indent
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sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF
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An_SP in an ordinary line>and a HT.
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>A HT (%).
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_>A SP and a HT (@%).
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_>_A SP, a HT and a SP (@%).
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_______Seven SP.
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________Eight SP (#).
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_______>Seven SP and a HT (@%).
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________>Eight SP and a HT (@#%).
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_______>_Seven SP, a HT and a SP (@%).
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________>_Eight SP, a HT and a SP (@#%).
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_______________Fifteen SP (#).
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_______________>Fifteen SP and a HT (@#%).
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________________Sixteen SP (#=).
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________________>Sixteen SP and a HT (@#%=).
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_____a__Five SP, a non WS, two SP.
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A line with a (!) trailing SP_
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A line with a (!) trailing HT>
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EOF
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}
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apply_patch () {
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>target &&
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sed -e "s|\([ab]\)/file|\1/target|" <patch |
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git apply "$@"
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}
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test_fix () {
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# fix should not barf
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apply_patch --whitespace=fix || return 1
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# find touched lines
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$DIFF file target | sed -n -e "s/^> //p" >fixed
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# the changed lines are all expeced to change
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fixed_cnt=$(wc -l <fixed)
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case "$1" in
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'') expect_cnt=$fixed_cnt ;;
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?*) expect_cnt=$(grep "[$1]" <fixed | wc -l) ;;
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esac
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test $fixed_cnt -eq $expect_cnt || return 1
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# and we are not missing anything
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case "$1" in
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'') expect_cnt=0 ;;
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?*) expect_cnt=$(grep "[$1]" <file | wc -l) ;;
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esac
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test $fixed_cnt -eq $expect_cnt || return 1
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# Get the patch actually applied
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git diff-files -p target >fixed-patch
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test -s fixed-patch && return 0
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# Make sure it is complaint-free
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>target
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git apply --whitespace=error-all <fixed-patch
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}
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test_expect_success setup '
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>file &&
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git add file &&
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prepare_test_file >file &&
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git diff-files -p >patch &&
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>target &&
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git add target
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'
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test_expect_success 'whitespace=nowarn, default rule' '
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apply_patch --whitespace=nowarn &&
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test_cmp file target
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'
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test_expect_success 'whitespace=warn, default rule' '
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apply_patch --whitespace=warn &&
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test_cmp file target
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'
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test_expect_success 'whitespace=error-all, default rule' '
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apply_patch --whitespace=error-all && return 1
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test -s target && return 1
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: happy
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'
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test_expect_success 'whitespace=error-all, no rule' '
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git config core.whitespace -trailing,-space-before,-indent &&
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apply_patch --whitespace=error-all &&
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test_cmp file target
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'
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test_expect_success 'whitespace=error-all, no rule (attribute)' '
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git config --unset core.whitespace &&
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echo "target -whitespace" >.gitattributes &&
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apply_patch --whitespace=error-all &&
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test_cmp file target
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'
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test_expect_success 'spaces inserted by tab-in-indent' '
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git config core.whitespace -trailing,-space,-indent,tab &&
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rm -f .gitattributes &&
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test_fix % &&
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sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF >expect &&
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An_SP in an ordinary line>and a HT.
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________A HT (%).
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________A SP and a HT (@%).
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_________A SP, a HT and a SP (@%).
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_______Seven SP.
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________Eight SP (#).
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________Seven SP and a HT (@%).
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________________Eight SP and a HT (@#%).
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_________Seven SP, a HT and a SP (@%).
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_________________Eight SP, a HT and a SP (@#%).
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_______________Fifteen SP (#).
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________________Fifteen SP and a HT (@#%).
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________________Sixteen SP (#=).
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________________________Sixteen SP and a HT (@#%=).
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_____a__Five SP, a non WS, two SP.
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A line with a (!) trailing SP_
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A line with a (!) trailing HT>
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EOF
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test_cmp expect target
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'
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for t in - ''
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do
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case "$t" in '') tt='!' ;; *) tt= ;; esac
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for s in - ''
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do
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case "$s" in '') ts='@' ;; *) ts= ;; esac
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for i in - ''
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do
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case "$i" in '') ti='#' ti16='=';; *) ti= ti16= ;; esac
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for h in - ''
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do
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[ -z "$h$i" ] && continue
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case "$h" in '') th='%' ;; *) th= ;; esac
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rule=${t}trailing,${s}space,${i}indent,${h}tab
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rm -f .gitattributes
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test_expect_success "rule=$rule" '
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git config core.whitespace "$rule" &&
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test_fix "$tt$ts$ti$th"
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'
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test_expect_success "rule=$rule,tabwidth=16" '
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git config core.whitespace "$rule,tabwidth=16" &&
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test_fix "$tt$ts$ti16$th"
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'
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test_expect_success "rule=$rule (attributes)" '
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git config --unset core.whitespace &&
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echo "target whitespace=$rule" >.gitattributes &&
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test_fix "$tt$ts$ti$th"
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'
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test_expect_success "rule=$rule,tabwidth=16 (attributes)" '
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echo "target whitespace=$rule,tabwidth=16" >.gitattributes &&
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test_fix "$tt$ts$ti16$th"
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'
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done
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done
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done
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done
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create_patch () {
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sed -e "s/_/ /" <<-\EOF
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diff --git a/target b/target
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index e69de29..8bd6648 100644
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--- a/target
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+++ b/target
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@@ -0,0 +1,3 @@
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+An empty line follows
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+
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+A line with trailing whitespace and no newline_
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\ No newline at end of file
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EOF
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}
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test_expect_success 'trailing whitespace & no newline at the end of file' '
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>target &&
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create_patch >patch-file &&
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git apply --whitespace=fix patch-file &&
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grep "newline$" target &&
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grep "^$" target
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'
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test_expect_success 'blank at EOF with --whitespace=fix (1)' '
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test_might_fail git config --unset core.whitespace &&
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rm -f .gitattributes &&
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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{ echo a; echo b; echo c; } >expect &&
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{ cat expect; echo; } >one &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=fix patch &&
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test_cmp expect one
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'
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test_expect_success 'blank at EOF with --whitespace=fix (2)' '
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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{ echo a; echo c; } >expect &&
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{ cat expect; echo; echo; } >one &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=fix patch &&
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test_cmp expect one
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'
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test_expect_success 'blank at EOF with --whitespace=fix (3)' '
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{ echo a; echo b; echo; } >one &&
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git add one &&
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{ echo a; echo c; echo; } >expect &&
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{ cat expect; echo; echo; } >one &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=fix patch &&
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test_cmp expect one
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'
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test_expect_success 'blank at end of hunk, not at EOF with --whitespace=fix' '
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{ echo a; echo b; echo; echo; echo; echo; echo; echo d; } >one &&
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git add one &&
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{ echo a; echo c; echo; echo; echo; echo; echo; echo; echo d; } >expect &&
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cp expect one &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=fix patch &&
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test_cmp expect one
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'
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test_expect_success 'blank at EOF with --whitespace=warn' '
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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echo >>one &&
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cat one >expect &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=warn patch 2>error &&
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test_cmp expect one &&
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grep "new blank line at EOF" error
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'
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test_expect_success 'blank at EOF with --whitespace=error' '
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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cat one >expect &&
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echo >>one &&
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git diff -- one >patch &&
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git checkout one &&
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test_must_fail git apply --whitespace=error patch 2>error &&
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test_cmp expect one &&
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grep "new blank line at EOF" error
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'
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test_expect_success 'blank but not empty at EOF' '
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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echo " " >>one &&
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cat one >expect &&
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git diff -- one >patch &&
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git checkout one &&
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git apply --whitespace=warn patch 2>error &&
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test_cmp expect one &&
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grep "new blank line at EOF" error
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'
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test_expect_success 'applying beyond EOF requires one non-blank context line' '
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{ echo; echo; echo; echo; } >one &&
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git add one &&
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{ echo b; } >>one &&
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git diff -- one >patch &&
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git checkout one &&
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{ echo a; echo; } >one &&
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cp one expect &&
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test_must_fail git apply --whitespace=fix patch &&
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test_cmp one expect &&
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test_must_fail git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'tons of blanks at EOF should not apply' '
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for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
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echo; echo; echo; echo;
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done >one &&
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git add one &&
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echo a >>one &&
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git diff -- one >patch &&
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>one &&
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test_must_fail git apply --whitespace=fix patch &&
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test_must_fail git apply --ignore-space-change --whitespace=fix patch
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'
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test_expect_success 'missing blank line at end with --whitespace=fix' '
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echo a >one &&
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echo >>one &&
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git add one &&
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echo b >>one &&
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cp one expect &&
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git diff -- one >patch &&
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echo a >one &&
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cp one saved-one &&
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test_must_fail git apply patch &&
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git apply --whitespace=fix patch &&
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test_cmp one expect &&
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mv saved-one one &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'two missing blank lines at end with --whitespace=fix' '
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{ echo a; echo; echo b; echo c; } >one &&
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cp one no-blank-lines &&
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{ echo; echo; } >>one &&
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git add one &&
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echo d >>one &&
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cp one expect &&
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echo >>one &&
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git diff -- one >patch &&
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cp no-blank-lines one &&
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test_must_fail git apply patch &&
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git apply --whitespace=fix patch &&
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test_cmp one expect &&
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mv no-blank-lines one &&
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test_must_fail git apply patch &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'missing blank line at end, insert before end, --whitespace=fix' '
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{ echo a; echo; } >one &&
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git add one &&
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{ echo b; echo a; echo; } >one &&
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cp one expect &&
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git diff -- one >patch &&
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echo a >one &&
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test_must_fail git apply patch &&
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git apply --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'shrink file with tons of missing blanks at end of file' '
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{ echo a; echo b; echo c; } >one &&
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cp one no-blank-lines &&
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for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
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echo; echo; echo; echo;
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done >>one &&
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git add one &&
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echo a >one &&
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cp one expect &&
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git diff -- one >patch &&
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cp no-blank-lines one &&
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test_must_fail git apply patch &&
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git apply --whitespace=fix patch &&
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test_cmp one expect &&
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mv no-blank-lines one &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'missing blanks at EOF must only match blank lines' '
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{ echo a; echo b; } >one &&
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git add one &&
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{ echo c; echo d; } >>one &&
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git diff -- one >patch &&
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echo a >one &&
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test_must_fail git apply patch &&
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test_must_fail git apply --whitespace=fix patch &&
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test_must_fail git apply --ignore-space-change --whitespace=fix patch
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'
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sed -e's/Z//' >one <<EOF
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a
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b
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c
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Z
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EOF
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test_expect_success 'missing blank line should match context line with spaces' '
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git add one &&
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echo d >>one &&
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git diff -- one >patch &&
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{ echo a; echo b; echo c; } >one &&
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cp one expect &&
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{ echo; echo d; } >>expect &&
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git add one &&
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git apply --whitespace=fix patch &&
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test_cmp one expect
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'
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sed -e's/Z//' >one <<EOF
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a
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b
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c
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Z
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EOF
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test_expect_success 'same, but with the --ignore-space-option' '
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git add one &&
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echo d >>one &&
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cp one expect &&
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git diff -- one >patch &&
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{ echo a; echo b; echo c; } >one &&
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git add one &&
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git checkout-index -f one &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'same, but with CR-LF line endings && cr-at-eol set' '
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git config core.whitespace cr-at-eol &&
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printf "a\r\n" >one &&
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printf "b\r\n" >>one &&
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printf "c\r\n" >>one &&
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cp one save-one &&
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printf " \r\n" >>one &&
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git add one &&
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printf "d\r\n" >>one &&
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cp one expect &&
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git diff -- one >patch &&
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mv save-one one &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'same, but with CR-LF line endings && cr-at-eol unset' '
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git config --unset core.whitespace &&
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printf "a\r\n" >one &&
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printf "b\r\n" >>one &&
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printf "c\r\n" >>one &&
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cp one save-one &&
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printf " \r\n" >>one &&
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git add one &&
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cp one expect &&
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printf "d\r\n" >>one &&
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git diff -- one >patch &&
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mv save-one one &&
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echo d >>expect &&
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git apply --ignore-space-change --whitespace=fix patch &&
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test_cmp one expect
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'
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test_expect_success 'whitespace=fix to expand' '
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qz_to_tab_space >preimage <<-\EOF &&
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QQa
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QQb
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QQc
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ZZZZZZZZZZZZZZZZd
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QQe
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QQf
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QQg
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EOF
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qz_to_tab_space >patch <<-\EOF &&
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diff --git a/preimage b/preimage
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--- a/preimage
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+++ b/preimage
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@@ -1,7 +1,6 @@
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QQa
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QQb
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QQc
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-QQd
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QQe
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QQf
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QQg
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EOF
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git -c core.whitespace=tab-in-indent apply --whitespace=fix patch
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'
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test_done
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