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: /usr/share/doc/git/contrib/diff-highlight/t/ [ drwxr-xr-x ]
name : t9400-diff-highlight.sh #!/bin/sh test_description='Test diff-highlight' CURR_DIR=$(pwd) TEST_OUTPUT_DIRECTORY=$(pwd) TEST_DIRECTORY="$CURR_DIR"/../../../t DIFF_HIGHLIGHT="$CURR_DIR"/../diff-highlight CW="$(printf "\033[7m")" # white CR="$(printf "\033[27m")" # reset . "$TEST_DIRECTORY"/test-lib.sh if ! test_have_prereq PERL then skip_all='skipping diff-highlight tests; perl not available' test_done fi # dh_test is a test helper function which takes 3 file names as parameters. The # first 2 files are used to generate diff and commit output, which is then # piped through diff-highlight. The 3rd file should contain the expected output # of diff-highlight (minus the diff/commit header, ie. everything after and # including the first @@ line). dh_test () { a="$1" b="$2" && cat >patch.exp && { cat "$a" >file && git add file && git commit -m "Add a file" && cat "$b" >file && git diff file >diff.raw && git commit -a -m "Update a file" && git show >commit.raw } >/dev/null && "$DIFF_HIGHLIGHT" <diff.raw | test_strip_patch_header >diff.act && "$DIFF_HIGHLIGHT" <commit.raw | test_strip_patch_header >commit.act && test_cmp patch.exp diff.act && test_cmp patch.exp commit.act } test_strip_patch_header () { sed -n '/^@@/,$p' $* } # dh_test_setup_history generates a contrived graph such that we have at least # 1 nesting (E) and 2 nestings (F). # # A---B master # / # D---E---F branch # # git log --all --graph # * commit # | B # | * commit # | | F # * | commit # | | A # | * commit # |/ # | E # * commit # D # dh_test_setup_history () { echo file1 >file && git add file && test_tick && git commit -m "D" && git checkout -b branch && echo file2 >file && test_tick && git commit -a -m "E" && git checkout master && echo file2 >file && test_tick && git commit -a -m "A" && git checkout branch && echo file3 >file && test_tick && git commit -a -m "F" && git checkout master && echo file3 >file && test_tick && git commit -a -m "B" } left_trim () { "$PERL_PATH" -pe 's/^\s+//' } trim_graph () { # graphs start with * or | # followed by a space or / or \ "$PERL_PATH" -pe 's@^((\*|\|)( |/|\\))+@@' } test_expect_success 'diff-highlight highlights the beginning of a line' ' cat >a <<-\EOF && aaa bbb ccc EOF cat >b <<-\EOF && aaa 0bb ccc EOF dh_test a b <<-EOF @@ -1,3 +1,3 @@ aaa -${CW}b${CR}bb +${CW}0${CR}bb ccc EOF ' test_expect_success 'diff-highlight highlights the end of a line' ' cat >a <<-\EOF && aaa bbb ccc EOF cat >b <<-\EOF && aaa bb0 ccc EOF dh_test a b <<-EOF @@ -1,3 +1,3 @@ aaa -bb${CW}b${CR} +bb${CW}0${CR} ccc EOF ' test_expect_success 'diff-highlight highlights the middle of a line' ' cat >a <<-\EOF && aaa bbb ccc EOF cat >b <<-\EOF && aaa b0b ccc EOF dh_test a b <<-EOF @@ -1,3 +1,3 @@ aaa -b${CW}b${CR}b +b${CW}0${CR}b ccc EOF ' test_expect_success 'diff-highlight does not highlight whole line' ' cat >a <<-\EOF && aaa bbb ccc EOF cat >b <<-\EOF && aaa 000 ccc EOF dh_test a b <<-EOF @@ -1,3 +1,3 @@ aaa -bbb +000 ccc EOF ' test_expect_failure 'diff-highlight highlights mismatched hunk size' ' cat >a <<-\EOF && aaa bbb EOF cat >b <<-\EOF && aaa b0b ccc EOF dh_test a b <<-EOF @@ -1,3 +1,3 @@ aaa -b${CW}b${CR}b +b${CW}0${CR}b +ccc EOF ' # These two code points share the same leading byte in UTF-8 representation; # a naive byte-wise diff would highlight only the second byte. # # - U+00f3 ("o" with acute) o_accent=$(printf '\303\263') # - U+00f8 ("o" with stroke) o_stroke=$(printf '\303\270') test_expect_success 'diff-highlight treats multibyte utf-8 as a unit' ' echo "unic${o_accent}de" >a && echo "unic${o_stroke}de" >b && dh_test a b <<-EOF @@ -1 +1 @@ -unic${CW}${o_accent}${CR}de +unic${CW}${o_stroke}${CR}de EOF ' # Unlike the UTF-8 above, these are combining code points which are meant # to modify the character preceding them: # # - U+0301 (combining acute accent) combine_accent=$(printf '\314\201') # - U+0302 (combining circumflex) combine_circum=$(printf '\314\202') test_expect_failure 'diff-highlight treats combining code points as a unit' ' echo "unico${combine_accent}de" >a && echo "unico${combine_circum}de" >b && dh_test a b <<-EOF @@ -1 +1 @@ -unic${CW}o${combine_accent}${CR}de +unic${CW}o${combine_circum}${CR}de EOF ' test_expect_success 'diff-highlight works with the --graph option' ' dh_test_setup_history && # date-order so that the commits are interleaved for both # trim graph elements so we can do a diff # trim leading space because our trim_graph is not perfect git log --branches -p --date-order | "$DIFF_HIGHLIGHT" | left_trim >graph.exp && git log --branches -p --date-order --graph | "$DIFF_HIGHLIGHT" | trim_graph | left_trim >graph.act && test_cmp graph.exp graph.act ' # Just reuse the previous graph test, but with --color. Our trimming # doesn't know about color, so just sanity check that something got # highlighted. test_expect_success 'diff-highlight works with color graph' ' git log --branches -p --date-order --graph --color | "$DIFF_HIGHLIGHT" | trim_graph | left_trim >graph && grep "\[7m" graph ' # Most combined diffs won't meet diff-highlight's line-number filter. So we # create one here where one side drops a line and the other modifies it. That # should result in a diff like: # # - modified content # ++resolved content # # which naively looks like one side added "+resolved". test_expect_success 'diff-highlight ignores combined diffs' ' echo "content" >file && git add file && git commit -m base && >file && git commit -am master && git checkout -b other HEAD^ && echo "modified content" >file && git commit -am other && test_must_fail git merge master && echo "resolved content" >file && git commit -am resolved && cat >expect <<-\EOF && --- a/file +++ b/file @@@ -1,1 -1,0 +1,1 @@@ - modified content ++resolved content EOF git show -c | "$DIFF_HIGHLIGHT" >actual.raw && sed -n "/^---/,\$p" <actual.raw >actual && test_cmp expect actual ' test_expect_success 'diff-highlight handles --graph with leading dash' ' cat >file <<-\EOF && before the old line -leading dash EOF git add file && git commit -m before && sed s/old/new/ <file >file.tmp && mv file.tmp file && git add file && git commit -m after && cat >expect <<-EOF && --- a/file +++ b/file @@ -1,3 +1,3 @@ before -the ${CW}old${CR} line +the ${CW}new${CR} line -leading dash EOF git log --graph -p -1 | "$DIFF_HIGHLIGHT" >actual.raw && trim_graph <actual.raw | sed -n "/^---/,\$p" >actual && test_cmp expect actual ' test_done