diff options
Diffstat (limited to 'third_party/git/t/t4015-diff-whitespace.sh')
| -rwxr-xr-x | third_party/git/t/t4015-diff-whitespace.sh | 2094 |
1 files changed, 2094 insertions, 0 deletions
diff --git a/third_party/git/t/t4015-diff-whitespace.sh b/third_party/git/t/t4015-diff-whitespace.sh new file mode 100755 index 000000000000..88d3026894f8 --- /dev/null +++ b/third_party/git/t/t4015-diff-whitespace.sh @@ -0,0 +1,2094 @@ +#!/bin/sh +# +# Copyright (c) 2006 Johannes E. Schindelin +# + +test_description='Test special whitespace in diff engine. + +' +. ./test-lib.sh +. "$TEST_DIRECTORY"/diff-lib.sh + +test_expect_success "Ray Lehtiniemi's example" ' + cat <<-\EOF >x && + do { + nothing; + } while (0); + EOF + git update-index --add x && + old_hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$old_hash_x") && + + cat <<-\EOF >x && + do + { + nothing; + } + while (0); + EOF + new_hash_x=$(git hash-object x) && + after=$(git rev-parse --short "$new_hash_x") && + + cat <<-EOF >expect && + diff --git a/x b/x + index $before..$after 100644 + --- a/x + +++ b/x + @@ -1,3 +1,5 @@ + -do { + +do + +{ + nothing; + -} while (0); + +} + +while (0); + EOF + + git diff >out && + test_cmp expect out && + + git diff -w >out && + test_cmp expect out && + + git diff -b >out && + test_cmp expect out +' + +test_expect_success 'another test, without options' ' + tr Q "\015" <<-\EOF >x && + whitespace at beginning + whitespace change + whitespace in the middle + whitespace at end + unchanged line + CR at endQ + EOF + + git update-index x && + old_hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$old_hash_x") && + + tr "_" " " <<-\EOF >x && + _ whitespace at beginning + whitespace change + white space in the middle + whitespace at end__ + unchanged line + CR at end + EOF + new_hash_x=$(git hash-object x) && + after=$(git rev-parse --short "$new_hash_x") && + + tr "Q_" "\015 " <<-EOF >expect && + diff --git a/x b/x + index $before..$after 100644 + --- a/x + +++ b/x + @@ -1,6 +1,6 @@ + -whitespace at beginning + -whitespace change + -whitespace in the middle + -whitespace at end + + whitespace at beginning + +whitespace change + +white space in the middle + +whitespace at end__ + unchanged line + -CR at endQ + +CR at end + EOF + + git diff >out && + test_cmp expect out && + + git diff -w >out && + test_must_be_empty out && + + git diff -w -b >out && + test_must_be_empty out && + + git diff -w --ignore-space-at-eol >out && + test_must_be_empty out && + + git diff -w -b --ignore-space-at-eol >out && + test_must_be_empty out && + + git diff -w --ignore-cr-at-eol >out && + test_must_be_empty out && + + tr "Q_" "\015 " <<-EOF >expect && + diff --git a/x b/x + index $before..$after 100644 + --- a/x + +++ b/x + @@ -1,6 +1,6 @@ + -whitespace at beginning + +_ whitespace at beginning + whitespace change + -whitespace in the middle + +white space in the middle + whitespace at end__ + unchanged line + CR at end + EOF + git diff -b >out && + test_cmp expect out && + + git diff -b --ignore-space-at-eol >out && + test_cmp expect out && + + git diff -b --ignore-cr-at-eol >out && + test_cmp expect out && + + tr "Q_" "\015 " <<-EOF >expect && + diff --git a/x b/x + index $before..$after 100644 + --- a/x + +++ b/x + @@ -1,6 +1,6 @@ + -whitespace at beginning + -whitespace change + -whitespace in the middle + +_ whitespace at beginning + +whitespace change + +white space in the middle + whitespace at end__ + unchanged line + CR at end + EOF + git diff --ignore-space-at-eol >out && + test_cmp expect out && + + git diff --ignore-space-at-eol --ignore-cr-at-eol >out && + test_cmp expect out && + + tr "Q_" "\015 " <<-EOF >expect && + diff --git a/x b/x + index_$before..$after 100644 + --- a/x + +++ b/x + @@ -1,6 +1,6 @@ + -whitespace at beginning + -whitespace change + -whitespace in the middle + -whitespace at end + +_ whitespace at beginning + +whitespace_ _change + +white space in the middle + +whitespace at end__ + unchanged line + CR at end + EOF + git diff --ignore-cr-at-eol >out && + test_cmp expect out +' + +test_expect_success 'ignore-blank-lines: only new lines' ' + test_seq 5 >x && + git update-index x && + test_seq 5 | sed "/3/i\\ +" >x && + git diff --ignore-blank-lines >out && + test_must_be_empty out +' + +test_expect_success 'ignore-blank-lines: only new lines with space' ' + test_seq 5 >x && + git update-index x && + test_seq 5 | sed "/3/i\\ + " >x && + git diff -w --ignore-blank-lines >out && + test_must_be_empty out +' + +test_expect_success 'ignore-blank-lines: after change' ' + cat <<-\EOF >x && + 1 + 2 + + 3 + 4 + 5 + + 6 + 7 + EOF + git update-index x && + cat <<-\EOF >x && + change + + 1 + 2 + 3 + 4 + 5 + 6 + + 7 + EOF + git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,6 +1,7 @@ + +change + + + 1 + 2 + - + 3 + 4 + 5 + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: before change' ' + cat <<-\EOF >x && + 1 + 2 + + 3 + 4 + 5 + 6 + 7 + EOF + git update-index x && + cat <<-\EOF >x && + + 1 + 2 + 3 + 4 + 5 + + 6 + 7 + change + EOF + git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -4,5 +4,7 @@ + 3 + 4 + 5 + + + 6 + 7 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: between changes' ' + cat <<-\EOF >x && + 1 + 2 + 3 + 4 + 5 + + + 6 + 7 + 8 + 9 + 10 + EOF + git update-index x && + cat <<-\EOF >x && + change + 1 + 2 + + 3 + 4 + 5 + 6 + 7 + 8 + + 9 + 10 + change + EOF + git diff --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,5 +1,7 @@ + +change + 1 + 2 + + + 3 + 4 + 5 + @@ -8,5 +8,7 @@ + 6 + 7 + 8 + + + 9 + 10 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: between changes (with interhunkctx)' ' + test_seq 10 >x && + git update-index x && + cat <<-\EOF >x && + change + 1 + 2 + + 3 + 4 + 5 + + 6 + 7 + 8 + 9 + + 10 + change + EOF + git diff --inter-hunk-context=2 --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,10 +1,15 @@ + +change + 1 + 2 + + + 3 + 4 + 5 + + + 6 + 7 + 8 + 9 + + + 10 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: scattered spaces' ' + test_seq 10 >x && + git update-index x && + cat <<-\EOF >x && + change + 1 + 2 + 3 + + 4 + + 5 + + 6 + + + 7 + + 8 + 9 + 10 + change + EOF + git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,3 +1,4 @@ + +change + 1 + 2 + 3 + @@ -8,3 +15,4 @@ + 8 + 9 + 10 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: spaces coalesce' ' + test_seq 6 >x && + git update-index x && + cat <<-\EOF >x && + change + 1 + 2 + 3 + + 4 + + 5 + + 6 + change + EOF + git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,6 +1,11 @@ + +change + 1 + 2 + 3 + + + 4 + + + 5 + + + 6 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'ignore-blank-lines: mix changes and blank lines' ' + test_seq 16 >x && + git update-index x && + cat <<-\EOF >x && + change + 1 + 2 + + 3 + 4 + 5 + change + 6 + 7 + 8 + + 9 + 10 + 11 + change + 12 + 13 + 14 + + 15 + 16 + change + EOF + git diff --ignore-blank-lines >out.tmp && + cat <<-\EOF >expected && + diff --git a/x b/x + --- a/x + +++ b/x + @@ -1,8 +1,11 @@ + +change + 1 + 2 + + + 3 + 4 + 5 + +change + 6 + 7 + 8 + @@ -9,8 +13,11 @@ + 9 + 10 + 11 + +change + 12 + 13 + 14 + + + 15 + 16 + +change + EOF + compare_diff_patch expected out.tmp +' + +test_expect_success 'check mixed spaces and tabs in indent' ' + # This is indented with SP HT SP. + echo " foo();" >x && + test_must_fail git diff --check >check && + grep "space before tab in indent" check +' + +test_expect_success 'check mixed tabs and spaces in indent' ' + # This is indented with HT SP HT. + echo " foo();" >x && + test_must_fail git diff --check >check && + grep "space before tab in indent" check +' + +test_expect_success 'check with no whitespace errors' ' + git commit -m "snapshot" && + echo "foo();" >x && + git diff --check +' + +test_expect_success 'check with trailing whitespace' ' + echo "foo(); " >x && + test_must_fail git diff --check +' + +test_expect_success 'check with space before tab in indent' ' + # indent has space followed by hard tab + echo " foo();" >x && + test_must_fail git diff --check +' + +test_expect_success '--check and --exit-code are not exclusive' ' + git checkout x && + git diff --check --exit-code +' + +test_expect_success '--check and --quiet are not exclusive' ' + git diff --check --quiet +' + +test_expect_success 'check staged with no whitespace errors' ' + echo "foo();" >x && + git add x && + git diff --cached --check +' + +test_expect_success 'check staged with trailing whitespace' ' + echo "foo(); " >x && + git add x && + test_must_fail git diff --cached --check +' + +test_expect_success 'check staged with space before tab in indent' ' + # indent has space followed by hard tab + echo " foo();" >x && + git add x && + test_must_fail git diff --cached --check +' + +test_expect_success 'check with no whitespace errors (diff-index)' ' + echo "foo();" >x && + git add x && + git diff-index --check HEAD +' + +test_expect_success 'check with trailing whitespace (diff-index)' ' + echo "foo(); " >x && + git add x && + test_must_fail git diff-index --check HEAD +' + +test_expect_success 'check with space before tab in indent (diff-index)' ' + # indent has space followed by hard tab + echo " foo();" >x && + git add x && + test_must_fail git diff-index --check HEAD +' + +test_expect_success 'check staged with no whitespace errors (diff-index)' ' + echo "foo();" >x && + git add x && + git diff-index --cached --check HEAD +' + +test_expect_success 'check staged with trailing whitespace (diff-index)' ' + echo "foo(); " >x && + git add x && + test_must_fail git diff-index --cached --check HEAD +' + +test_expect_success 'check staged with space before tab in indent (diff-index)' ' + # indent has space followed by hard tab + echo " foo();" >x && + git add x && + test_must_fail git diff-index --cached --check HEAD +' + +test_expect_success 'check with no whitespace errors (diff-tree)' ' + echo "foo();" >x && + git commit -m "new commit" x && + git diff-tree --check HEAD^ HEAD +' + +test_expect_success 'check with trailing whitespace (diff-tree)' ' + echo "foo(); " >x && + git commit -m "another commit" x && + test_must_fail git diff-tree --check HEAD^ HEAD +' + +test_expect_success 'check with space before tab in indent (diff-tree)' ' + # indent has space followed by hard tab + echo " foo();" >x && + git commit -m "yet another" x && + test_must_fail git diff-tree --check HEAD^ HEAD +' + +test_expect_success 'check with ignored trailing whitespace attr (diff-tree)' ' + test_when_finished "git reset --hard HEAD^" && + + # create a whitespace error that should be ignored + echo "* -whitespace" >.gitattributes && + git add .gitattributes && + echo "foo(); " >x && + git add x && + git commit -m "add trailing space" && + + # with a worktree diff-tree ignores the whitespace error + git diff-tree --root --check HEAD && + + # without a worktree diff-tree still ignores the whitespace error + git -C .git diff-tree --root --check HEAD +' + +test_expect_success 'check trailing whitespace (trailing-space: off)' ' + git config core.whitespace "-trailing-space" && + echo "foo (); " >x && + git diff --check +' + +test_expect_success 'check trailing whitespace (trailing-space: on)' ' + git config core.whitespace "trailing-space" && + echo "foo (); " >x && + test_must_fail git diff --check +' + +test_expect_success 'check space before tab in indent (space-before-tab: off)' ' + # indent contains space followed by HT + git config core.whitespace "-space-before-tab" && + echo " foo ();" >x && + git diff --check +' + +test_expect_success 'check space before tab in indent (space-before-tab: on)' ' + # indent contains space followed by HT + git config core.whitespace "space-before-tab" && + echo " foo (); " >x && + test_must_fail git diff --check +' + +test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' ' + git config core.whitespace "-indent-with-non-tab" && + echo " foo ();" >x && + git diff --check +' + +test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' ' + git config core.whitespace "indent-with-non-tab" && + echo " foo ();" >x && + test_must_fail git diff --check +' + +test_expect_success 'ditto, but tabwidth=9' ' + git config core.whitespace "indent-with-non-tab,tabwidth=9" && + git diff --check +' + +test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' ' + git config core.whitespace "indent-with-non-tab" && + echo " foo ();" >x && + test_must_fail git diff --check +' + +test_expect_success 'ditto, but tabwidth=10' ' + git config core.whitespace "indent-with-non-tab,tabwidth=10" && + test_must_fail git diff --check +' + +test_expect_success 'ditto, but tabwidth=20' ' + git config core.whitespace "indent-with-non-tab,tabwidth=20" && + git diff --check +' + +test_expect_success 'check tabs as indentation (tab-in-indent: off)' ' + git config core.whitespace "-tab-in-indent" && + echo " foo ();" >x && + git diff --check +' + +test_expect_success 'check tabs as indentation (tab-in-indent: on)' ' + git config core.whitespace "tab-in-indent" && + echo " foo ();" >x && + test_must_fail git diff --check +' + +test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' ' + git config core.whitespace "tab-in-indent" && + echo " foo ();" >x && + test_must_fail git diff --check +' + +test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' ' + git config core.whitespace "tab-in-indent,tabwidth=1" && + test_must_fail git diff --check +' + +test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' ' + git config core.whitespace "tab-in-indent,indent-with-non-tab" && + echo "foo ();" >x && + test_must_fail git diff --check +' + +test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' ' + git config --unset core.whitespace && + echo "x whitespace" >.gitattributes && + echo " foo ();" >x && + git diff --check && + rm -f .gitattributes +' + +test_expect_success 'line numbers in --check output are correct' ' + echo "" >x && + echo "foo(); " >>x && + test_must_fail git diff --check >check && + grep "x:2:" check +' + +test_expect_success 'checkdiff detects new trailing blank lines (1)' ' + echo "foo();" >x && + echo "" >>x && + test_must_fail git diff --check >check && + grep "new blank line" check +' + +test_expect_success 'checkdiff detects new trailing blank lines (2)' ' + test_write_lines a b "" "" >x && + git add x && + test_write_lines a "" "" "" "" >x && + test_must_fail git diff --check >check && + grep "new blank line" check +' + +test_expect_success 'checkdiff allows new blank lines' ' + git checkout x && + mv x y && + ( + echo "/* This is new */" && + echo "" && + cat y + ) >x && + git diff --check +' + +test_expect_success 'whitespace-only changes not reported' ' + git reset --hard && + echo >x "hello world" && + git add x && + git commit -m "hello 1" && + echo >x "hello world" && + git diff -b >actual && + test_must_be_empty actual +' + +test_expect_success 'whitespace-only changes reported across renames' ' + git reset --hard && + for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x && + git add x && + hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$hash_x") && + git commit -m "base" && + sed -e "5s/^/ /" x >z && + git rm x && + git add z && + hash_z=$(git hash-object z) && + after=$(git rev-parse --short "$hash_z") && + git diff -w -M --cached >actual.raw && + sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" actual.raw >actual && + cat <<-EOF >expect && + diff --git a/x b/z + similarity index NUM% + rename from x + rename to z + index $before..$after 100644 + EOF + test_cmp expect actual +' + +cat >expected <<\EOF +diff --git a/empty b/void +similarity index 100% +rename from empty +rename to void +EOF + +test_expect_success 'rename empty' ' + git reset --hard && + >empty && + git add empty && + git commit -m empty && + git mv empty void && + git diff -w --cached -M >current && + test_cmp expected current +' + +test_expect_success 'combined diff with autocrlf conversion' ' + + git reset --hard && + echo >x hello && + git commit -m "one side" x && + git checkout HEAD^ && + echo >x goodbye && + git commit -m "the other side" x && + git config core.autocrlf true && + test_must_fail git merge master && + + git diff >actual.raw && + sed -e "1,/^@@@/d" actual.raw >actual && + ! grep "^-" actual + +' + +# Start testing the colored format for whitespace checks + +test_expect_success 'setup diff colors' ' + git config color.diff.plain normal && + git config color.diff.meta bold && + git config color.diff.frag cyan && + git config color.diff.func normal && + git config color.diff.old red && + git config color.diff.new green && + git config color.diff.commit yellow && + git config color.diff.whitespace blue && + + git config core.autocrlf false +' + +test_expect_success 'diff that introduces a line with only tabs' ' + git config core.whitespace blank-at-eol && + git reset --hard && + echo "test" >x && + old_hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$old_hash_x") && + git commit -m "initial" x && + echo "{NTN}" | tr "NT" "\n\t" >>x && + new_hash_x=$(git hash-object x) && + after=$(git rev-parse --short "$new_hash_x") && + git diff --color >current.raw && + test_decode_color <current.raw >current && + + cat >expected <<-EOF && + <BOLD>diff --git a/x b/x<RESET> + <BOLD>index $before..$after 100644<RESET> + <BOLD>--- a/x<RESET> + <BOLD>+++ b/x<RESET> + <CYAN>@@ -1 +1,4 @@<RESET> + test<RESET> + <GREEN>+<RESET><GREEN>{<RESET> + <GREEN>+<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>}<RESET> + EOF + + test_cmp expected current +' + +test_expect_success 'diff that introduces and removes ws breakages' ' + git reset --hard && + { + echo "0. blank-at-eol " && + echo "1. blank-at-eol " + } >x && + old_hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$old_hash_x") && + git commit -a --allow-empty -m preimage && + { + echo "0. blank-at-eol " && + echo "1. still-blank-at-eol " && + echo "2. and a new line " + } >x && + new_hash_x=$(git hash-object x) && + after=$(git rev-parse --short "$new_hash_x") && + + git diff --color >current.raw && + test_decode_color <current.raw >current && + + cat >expected <<-EOF && + <BOLD>diff --git a/x b/x<RESET> + <BOLD>index $before..$after 100644<RESET> + <BOLD>--- a/x<RESET> + <BOLD>+++ b/x<RESET> + <CYAN>@@ -1,2 +1,3 @@<RESET> + 0. blank-at-eol <RESET> + <RED>-1. blank-at-eol <RESET> + <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET> + EOF + + test_cmp expected current +' + +test_expect_success 'ws-error-highlight test setup' ' + + git reset --hard && + { + echo "0. blank-at-eol " && + echo "1. blank-at-eol " + } >x && + old_hash_x=$(git hash-object x) && + before=$(git rev-parse --short "$old_hash_x") && + git commit -a --allow-empty -m preimage && + { + echo "0. blank-at-eol " && + echo "1. still-blank-at-eol " && + echo "2. and a new line " + } >x && + new_hash_x=$(git hash-object x) && + after=$(git rev-parse --short "$new_hash_x") && + + cat >expect.default-old <<-EOF && + <BOLD>diff --git a/x b/x<RESET> + <BOLD>index $before..$after 100644<RESET> + <BOLD>--- a/x<RESET> + <BOLD>+++ b/x<RESET> + <CYAN>@@ -1,2 +1,3 @@<RESET> + 0. blank-at-eol <RESET> + <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET> + EOF + + cat >expect.all <<-EOF && + <BOLD>diff --git a/x b/x<RESET> + <BOLD>index $before..$after 100644<RESET> + <BOLD>--- a/x<RESET> + <BOLD>+++ b/x<RESET> + <CYAN>@@ -1,2 +1,3 @@<RESET> + <RESET>0. blank-at-eol<RESET><BLUE> <RESET> + <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET> + <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET> + EOF + + cat >expect.none <<-EOF + <BOLD>diff --git a/x b/x<RESET> + <BOLD>index $before..$after 100644<RESET> + <BOLD>--- a/x<RESET> + <BOLD>+++ b/x<RESET> + <CYAN>@@ -1,2 +1,3 @@<RESET> + 0. blank-at-eol <RESET> + <RED>-1. blank-at-eol <RESET> + <GREEN>+1. still-blank-at-eol <RESET> + <GREEN>+2. and a new line <RESET> + EOF + +' + +test_expect_success 'test --ws-error-highlight option' ' + + git diff --color --ws-error-highlight=default,old >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.default-old current && + + git diff --color --ws-error-highlight=all >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.all current && + + git diff --color --ws-error-highlight=none >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.none current + +' + +test_expect_success 'test diff.wsErrorHighlight config' ' + + git -c diff.wsErrorHighlight=default,old diff --color >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.default-old current && + + git -c diff.wsErrorHighlight=all diff --color >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.all current && + + git -c diff.wsErrorHighlight=none diff --color >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.none current + +' + +test_expect_success 'option overrides diff.wsErrorHighlight' ' + + git -c diff.wsErrorHighlight=none \ + diff --color --ws-error-highlight=default,old >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.default-old current && + + git -c diff.wsErrorHighlight=default \ + diff --color --ws-error-highlight=all >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.all current && + + git -c diff.wsErrorHighlight=all \ + diff --color --ws-error-highlight=none >current.raw && + test_decode_color <current.raw >current && + test_cmp expect.none current + +' + +test_expect_success 'detect moved code, complete file' ' + git reset --hard && + cat <<-\EOF >test.c && + #include<stdio.h> + main() + { + printf("Hello World"); + } + EOF + git add test.c && + git commit -m "add main function" && + file=$(git rev-parse --short HEAD:test.c) && + git mv test.c main.c && + test_config color.diff.oldMoved "normal red" && + test_config color.diff.newMoved "normal green" && + git diff HEAD --color-moved=zebra --color --no-renames >actual.raw && + test_decode_color <actual.raw >actual && + cat >expected <<-EOF && + <BOLD>diff --git a/main.c b/main.c<RESET> + <BOLD>new file mode 100644<RESET> + <BOLD>index 0000000..$file<RESET> + <BOLD>--- /dev/null<RESET> + <BOLD>+++ b/main.c<RESET> + <CYAN>@@ -0,0 +1,5 @@<RESET> + <BGREEN>+<RESET><BGREEN>#include<stdio.h><RESET> + <BGREEN>+<RESET><BGREEN>main()<RESET> + <BGREEN>+<RESET><BGREEN>{<RESET> + <BGREEN>+<RESET><BGREEN>printf("Hello World");<RESET> + <BGREEN>+<RESET><BGREEN>}<RESET> + <BOLD>diff --git a/test.c b/test.c<RESET> + <BOLD>deleted file mode 100644<RESET> + <BOLD>index $file..0000000<RESET> + <BOLD>--- a/test.c<RESET> + <BOLD>+++ /dev/null<RESET> + <CYAN>@@ -1,5 +0,0 @@<RESET> + <BRED>-#include<stdio.h><RESET> + <BRED>-main()<RESET> + <BRED>-{<RESET> + <BRED>-printf("Hello World");<RESET> + <BRED>-}<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'detect malicious moved code, inside file' ' + test_config color.diff.oldMoved "normal red" && + test_config color.diff.newMoved "normal green" && + test_config color.diff.oldMovedAlternative "blue" && + test_config color.diff.newMovedAlternative "yellow" && + git reset --hard && + cat <<-\EOF >main.c && + #include<stdio.h> + int stuff() + { + printf("Hello "); + printf("World\n"); + } + + int secure_foo(struct user *u) + { + if (!u->is_allowed_foo) + return; + foo(u); + } + + int main() + { + foo(); + } + EOF + cat <<-\EOF >test.c && + #include<stdio.h> + int bar() + { + printf("Hello World, but different\n"); + } + + int another_function() + { + bar(); + } + EOF + git add main.c test.c && + git commit -m "add main and test file" && + before_main=$(git rev-parse --short HEAD:main.c) && + before_test=$(git rev-parse --short HEAD:test.c) && + cat <<-\EOF >main.c && + #include<stdio.h> + int stuff() + { + printf("Hello "); + printf("World\n"); + } + + int main() + { + foo(); + } + EOF + cat <<-\EOF >test.c && + #include<stdio.h> + int bar() + { + printf("Hello World, but different\n"); + } + + int secure_foo(struct user *u) + { + foo(u); + if (!u->is_allowed_foo) + return; + } + + int another_function() + { + bar(); + } + EOF + hash_main=$(git hash-object main.c) && + after_main=$(git rev-parse --short "$hash_main") && + hash_test=$(git hash-object test.c) && + after_test=$(git rev-parse --short "$hash_test") && + git diff HEAD --no-renames --color-moved=zebra --color >actual.raw && + test_decode_color <actual.raw >actual && + cat <<-EOF >expected && + <BOLD>diff --git a/main.c b/main.c<RESET> + <BOLD>index $before_main..$after_main 100644<RESET> + <BOLD>--- a/main.c<RESET> + <BOLD>+++ b/main.c<RESET> + <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET> + printf("World\n");<RESET> + }<RESET> + <RESET> + <BRED>-int secure_foo(struct user *u)<RESET> + <BRED>-{<RESET> + <BLUE>-if (!u->is_allowed_foo)<RESET> + <BLUE>-return;<RESET> + <RED>-foo(u);<RESET> + <RED>-}<RESET> + <RED>-<RESET> + int main()<RESET> + {<RESET> + foo();<RESET> + <BOLD>diff --git a/test.c b/test.c<RESET> + <BOLD>index $before_test..$after_test 100644<RESET> + <BOLD>--- a/test.c<RESET> + <BOLD>+++ b/test.c<RESET> + <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET> + printf("Hello World, but different\n");<RESET> + }<RESET> + <RESET> + <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET> + <BGREEN>+<RESET><BGREEN>{<RESET> + <GREEN>+<RESET><GREEN>foo(u);<RESET> + <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET> + <BGREEN>+<RESET><BGREEN>return;<RESET> + <GREEN>+<RESET><GREEN>}<RESET> + <GREEN>+<RESET> + int another_function()<RESET> + {<RESET> + bar();<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'plain moved code, inside file' ' + test_config color.diff.oldMoved "normal red" && + test_config color.diff.newMoved "normal green" && + test_config color.diff.oldMovedAlternative "blue" && + test_config color.diff.newMovedAlternative "yellow" && + # needs previous test as setup + git diff HEAD --no-renames --color-moved=plain --color >actual.raw && + test_decode_color <actual.raw >actual && + cat <<-EOF >expected && + <BOLD>diff --git a/main.c b/main.c<RESET> + <BOLD>index $before_main..$after_main 100644<RESET> + <BOLD>--- a/main.c<RESET> + <BOLD>+++ b/main.c<RESET> + <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET> + printf("World\n");<RESET> + }<RESET> + <RESET> + <BRED>-int secure_foo(struct user *u)<RESET> + <BRED>-{<RESET> + <BRED>-if (!u->is_allowed_foo)<RESET> + <BRED>-return;<RESET> + <BRED>-foo(u);<RESET> + <BRED>-}<RESET> + <BRED>-<RESET> + int main()<RESET> + {<RESET> + foo();<RESET> + <BOLD>diff --git a/test.c b/test.c<RESET> + <BOLD>index $before_test..$after_test 100644<RESET> + <BOLD>--- a/test.c<RESET> + <BOLD>+++ b/test.c<RESET> + <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET> + printf("Hello World, but different\n");<RESET> + }<RESET> + <RESET> + <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET> + <BGREEN>+<RESET><BGREEN>{<RESET> + <BGREEN>+<RESET><BGREEN>foo(u);<RESET> + <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET> + <BGREEN>+<RESET><BGREEN>return;<RESET> + <BGREEN>+<RESET><BGREEN>}<RESET> + <BGREEN>+<RESET> + int another_function()<RESET> + {<RESET> + bar();<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'detect blocks of moved code' ' + git reset --hard && + cat <<-\EOF >lines.txt && + long line 1 + long line 2 + long line 3 + line 4 + line 5 + line 6 + line 7 + line 8 + line 9 + line 10 + line 11 + line 12 + line 13 + long line 14 + long line 15 + long line 16 + EOF + git add lines.txt && + git commit -m "add poetry" && + cat <<-\EOF >lines.txt && + line 4 + line 5 + line 6 + line 7 + line 8 + line 9 + long line 1 + long line 2 + long line 3 + long line 14 + long line 15 + long line 16 + line 10 + line 11 + line 12 + line 13 + EOF + test_config color.diff.oldMoved "magenta" && + test_config color.diff.newMoved "cyan" && + test_config color.diff.oldMovedAlternative "blue" && + test_config color.diff.newMovedAlternative "yellow" && + test_config color.diff.oldMovedDimmed "normal magenta" && + test_config color.diff.newMovedDimmed "normal cyan" && + test_config color.diff.oldMovedAlternativeDimmed "normal blue" && + test_config color.diff.newMovedAlternativeDimmed "normal yellow" && + git diff HEAD --no-renames --color-moved=blocks --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,16 +1,16 @@<RESET> + <MAGENTA>-long line 1<RESET> + <MAGENTA>-long line 2<RESET> + <MAGENTA>-long line 3<RESET> + line 4<RESET> + line 5<RESET> + line 6<RESET> + line 7<RESET> + line 8<RESET> + line 9<RESET> + <CYAN>+<RESET><CYAN>long line 1<RESET> + <CYAN>+<RESET><CYAN>long line 2<RESET> + <CYAN>+<RESET><CYAN>long line 3<RESET> + <CYAN>+<RESET><CYAN>long line 14<RESET> + <CYAN>+<RESET><CYAN>long line 15<RESET> + <CYAN>+<RESET><CYAN>long line 16<RESET> + line 10<RESET> + line 11<RESET> + line 12<RESET> + line 13<RESET> + <MAGENTA>-long line 14<RESET> + <MAGENTA>-long line 15<RESET> + <MAGENTA>-long line 16<RESET> + EOF + test_cmp expected actual + +' + +test_expect_success 'detect permutations inside moved code -- dimmed-zebra' ' + # reuse setup from test before! + test_config color.diff.oldMoved "magenta" && + test_config color.diff.newMoved "cyan" && + test_config color.diff.oldMovedAlternative "blue" && + test_config color.diff.newMovedAlternative "yellow" && + test_config color.diff.oldMovedDimmed "normal magenta" && + test_config color.diff.newMovedDimmed "normal cyan" && + test_config color.diff.oldMovedAlternativeDimmed "normal blue" && + test_config color.diff.newMovedAlternativeDimmed "normal yellow" && + git diff HEAD --no-renames --color-moved=dimmed-zebra --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,16 +1,16 @@<RESET> + <BMAGENTA>-long line 1<RESET> + <BMAGENTA>-long line 2<RESET> + <BMAGENTA>-long line 3<RESET> + line 4<RESET> + line 5<RESET> + line 6<RESET> + line 7<RESET> + line 8<RESET> + line 9<RESET> + <BCYAN>+<RESET><BCYAN>long line 1<RESET> + <BCYAN>+<RESET><BCYAN>long line 2<RESET> + <CYAN>+<RESET><CYAN>long line 3<RESET> + <YELLOW>+<RESET><YELLOW>long line 14<RESET> + <BYELLOW>+<RESET><BYELLOW>long line 15<RESET> + <BYELLOW>+<RESET><BYELLOW>long line 16<RESET> + line 10<RESET> + line 11<RESET> + line 12<RESET> + line 13<RESET> + <BMAGENTA>-long line 14<RESET> + <BMAGENTA>-long line 15<RESET> + <BMAGENTA>-long line 16<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'cmd option assumes configured colored-moved' ' + test_config color.diff.oldMoved "magenta" && + test_config color.diff.newMoved "cyan" && + test_config color.diff.oldMovedAlternative "blue" && + test_config color.diff.newMovedAlternative "yellow" && + test_config color.diff.oldMovedDimmed "normal magenta" && + test_config color.diff.newMovedDimmed "normal cyan" && + test_config color.diff.oldMovedAlternativeDimmed "normal blue" && + test_config color.diff.newMovedAlternativeDimmed "normal yellow" && + test_config diff.colorMoved zebra && + git diff HEAD --no-renames --color-moved --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,16 +1,16 @@<RESET> + <MAGENTA>-long line 1<RESET> + <MAGENTA>-long line 2<RESET> + <MAGENTA>-long line 3<RESET> + line 4<RESET> + line 5<RESET> + line 6<RESET> + line 7<RESET> + line 8<RESET> + line 9<RESET> + <CYAN>+<RESET><CYAN>long line 1<RESET> + <CYAN>+<RESET><CYAN>long line 2<RESET> + <CYAN>+<RESET><CYAN>long line 3<RESET> + <YELLOW>+<RESET><YELLOW>long line 14<RESET> + <YELLOW>+<RESET><YELLOW>long line 15<RESET> + <YELLOW>+<RESET><YELLOW>long line 16<RESET> + line 10<RESET> + line 11<RESET> + line 12<RESET> + line 13<RESET> + <MAGENTA>-long line 14<RESET> + <MAGENTA>-long line 15<RESET> + <MAGENTA>-long line 16<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'no effect from --color-moved with --word-diff' ' + cat <<-\EOF >text.txt && + Lorem Ipsum is simply dummy text of the printing and typesetting industry. + EOF + git add text.txt && + git commit -a -m "clean state" && + cat <<-\EOF >text.txt && + simply Lorem Ipsum dummy is text of the typesetting and printing industry. + EOF + git diff --color-moved --word-diff >actual && + git diff --word-diff >expect && + test_cmp expect actual +' + +test_expect_success 'set up whitespace tests' ' + git reset --hard && + # Note that these lines have no leading or trailing whitespace. + cat <<-\EOF >lines.txt && + line 1 + line 2 + line 3 + line 4 + line 5 + long line 6 + long line 7 + long line 8 + long line 9 + EOF + git add lines.txt && + git commit -m "add poetry" && + git config color.diff.oldMoved "magenta" && + git config color.diff.newMoved "cyan" +' + +test_expect_success 'move detection ignoring whitespace ' ' + q_to_tab <<-\EOF >lines.txt && + Qlong line 6 + Qlong line 7 + Qlong line 8 + Qchanged long line 9 + line 1 + line 2 + line 3 + line 4 + line 5 + EOF + git diff HEAD --no-renames --color-moved --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <GREEN>+<RESET> <GREEN>long line 6<RESET> + <GREEN>+<RESET> <GREEN>long line 7<RESET> + <GREEN>+<RESET> <GREEN>long line 8<RESET> + <GREEN>+<RESET> <GREEN>changed long line 9<RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <RED>-long line 6<RESET> + <RED>-long line 7<RESET> + <RED>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual && + + git diff HEAD --no-renames --color-moved --color \ + --color-moved-ws=ignore-all-space >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <CYAN>+<RESET> <CYAN>long line 6<RESET> + <CYAN>+<RESET> <CYAN>long line 7<RESET> + <CYAN>+<RESET> <CYAN>long line 8<RESET> + <GREEN>+<RESET> <GREEN>changed long line 9<RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <MAGENTA>-long line 6<RESET> + <MAGENTA>-long line 7<RESET> + <MAGENTA>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'move detection ignoring whitespace changes' ' + git reset --hard && + # Lines 6-8 have a space change, but 9 is new whitespace + q_to_tab <<-\EOF >lines.txt && + longQline 6 + longQline 7 + longQline 8 + long liQne 9 + line 1 + line 2 + line 3 + line 4 + line 5 + EOF + + git diff HEAD --no-renames --color-moved --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <GREEN>+<RESET><GREEN>long line 6<RESET> + <GREEN>+<RESET><GREEN>long line 7<RESET> + <GREEN>+<RESET><GREEN>long line 8<RESET> + <GREEN>+<RESET><GREEN>long li ne 9<RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <RED>-long line 6<RESET> + <RED>-long line 7<RESET> + <RED>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual && + + git diff HEAD --no-renames --color-moved --color \ + --color-moved-ws=ignore-space-change >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <CYAN>+<RESET><CYAN>long line 6<RESET> + <CYAN>+<RESET><CYAN>long line 7<RESET> + <CYAN>+<RESET><CYAN>long line 8<RESET> + <GREEN>+<RESET><GREEN>long li ne 9<RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <MAGENTA>-long line 6<RESET> + <MAGENTA>-long line 7<RESET> + <MAGENTA>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'move detection ignoring whitespace at eol' ' + git reset --hard && + # Lines 6-9 have new eol whitespace, but 9 also has it in the middle + q_to_tab <<-\EOF >lines.txt && + long line 6Q + long line 7Q + long line 8Q + longQline 9Q + line 1 + line 2 + line 3 + line 4 + line 5 + EOF + + # avoid cluttering the output with complaints about our eol whitespace + test_config core.whitespace -blank-at-eol && + + git diff HEAD --no-renames --color-moved --color >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <GREEN>+<RESET><GREEN>long line 6 <RESET> + <GREEN>+<RESET><GREEN>long line 7 <RESET> + <GREEN>+<RESET><GREEN>long line 8 <RESET> + <GREEN>+<RESET><GREEN>long line 9 <RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <RED>-long line 6<RESET> + <RED>-long line 7<RESET> + <RED>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual && + + git diff HEAD --no-renames --color-moved --color \ + --color-moved-ws=ignore-space-at-eol >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat <<-\EOF >expected && + <BOLD>diff --git a/lines.txt b/lines.txt<RESET> + <BOLD>--- a/lines.txt<RESET> + <BOLD>+++ b/lines.txt<RESET> + <CYAN>@@ -1,9 +1,9 @@<RESET> + <CYAN>+<RESET><CYAN>long line 6 <RESET> + <CYAN>+<RESET><CYAN>long line 7 <RESET> + <CYAN>+<RESET><CYAN>long line 8 <RESET> + <GREEN>+<RESET><GREEN>long line 9 <RESET> + line 1<RESET> + line 2<RESET> + line 3<RESET> + line 4<RESET> + line 5<RESET> + <MAGENTA>-long line 6<RESET> + <MAGENTA>-long line 7<RESET> + <MAGENTA>-long line 8<RESET> + <RED>-long line 9<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'clean up whitespace-test colors' ' + git config --unset color.diff.oldMoved && + git config --unset color.diff.newMoved +' + +test_expect_success '--color-moved block at end of diff output respects MIN_ALNUM_COUNT' ' + git reset --hard && + >bar && + cat <<-\EOF >foo && + irrelevant_line + line1 + EOF + git add foo bar && + git commit -m x && + + cat <<-\EOF >bar && + line1 + EOF + cat <<-\EOF >foo && + irrelevant_line + EOF + + git diff HEAD --color-moved=zebra --color --no-renames >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat >expected <<-\EOF && + <BOLD>diff --git a/bar b/bar<RESET> + <BOLD>--- a/bar<RESET> + <BOLD>+++ b/bar<RESET> + <CYAN>@@ -0,0 +1 @@<RESET> + <GREEN>+<RESET><GREEN>line1<RESET> + <BOLD>diff --git a/foo b/foo<RESET> + <BOLD>--- a/foo<RESET> + <BOLD>+++ b/foo<RESET> + <CYAN>@@ -1,2 +1 @@<RESET> + irrelevant_line<RESET> + <RED>-line1<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success '--color-moved respects MIN_ALNUM_COUNT' ' + git reset --hard && + cat <<-\EOF >foo && + nineteen chars 456789 + irrelevant_line + twenty chars 234567890 + EOF + >bar && + git add foo bar && + git commit -m x && + + cat <<-\EOF >foo && + irrelevant_line + EOF + cat <<-\EOF >bar && + twenty chars 234567890 + nineteen chars 456789 + EOF + + git diff HEAD --color-moved=zebra --color --no-renames >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat >expected <<-\EOF && + <BOLD>diff --git a/bar b/bar<RESET> + <BOLD>--- a/bar<RESET> + <BOLD>+++ b/bar<RESET> + <CYAN>@@ -0,0 +1,2 @@<RESET> + <BOLD;CYAN>+<RESET><BOLD;CYAN>twenty chars 234567890<RESET> + <GREEN>+<RESET><GREEN>nineteen chars 456789<RESET> + <BOLD>diff --git a/foo b/foo<RESET> + <BOLD>--- a/foo<RESET> + <BOLD>+++ b/foo<RESET> + <CYAN>@@ -1,3 +1 @@<RESET> + <RED>-nineteen chars 456789<RESET> + irrelevant_line<RESET> + <BOLD;MAGENTA>-twenty chars 234567890<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success '--color-moved treats adjacent blocks as separate for MIN_ALNUM_COUNT' ' + git reset --hard && + cat <<-\EOF >foo && + 7charsA + irrelevant_line + 7charsB + 7charsC + EOF + >bar && + git add foo bar && + git commit -m x && + + cat <<-\EOF >foo && + irrelevant_line + EOF + cat <<-\EOF >bar && + 7charsB + 7charsC + 7charsA + EOF + + git diff HEAD --color-moved=zebra --color --no-renames >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat >expected <<-\EOF && + <BOLD>diff --git a/bar b/bar<RESET> + <BOLD>--- a/bar<RESET> + <BOLD>+++ b/bar<RESET> + <CYAN>@@ -0,0 +1,3 @@<RESET> + <GREEN>+<RESET><GREEN>7charsB<RESET> + <GREEN>+<RESET><GREEN>7charsC<RESET> + <GREEN>+<RESET><GREEN>7charsA<RESET> + <BOLD>diff --git a/foo b/foo<RESET> + <BOLD>--- a/foo<RESET> + <BOLD>+++ b/foo<RESET> + <CYAN>@@ -1,4 +1 @@<RESET> + <RED>-7charsA<RESET> + irrelevant_line<RESET> + <RED>-7charsB<RESET> + <RED>-7charsC<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'move detection with submodules' ' + test_create_repo bananas && + echo ripe >bananas/recipe && + git -C bananas add recipe && + test_commit fruit && + test_commit -C bananas recipe && + git submodule add ./bananas && + git add bananas && + git commit -a -m "bananas are like a heavy library?" && + echo foul >bananas/recipe && + echo ripe >fruit.t && + + git diff --submodule=diff --color-moved --color >actual && + + # no move detection as the moved line is across repository boundaries. + test_decode_color <actual >decoded_actual && + ! grep BGREEN decoded_actual && + ! grep BRED decoded_actual && + + # nor did we mess with it another way + git diff --submodule=diff --color >expect.raw && + test_decode_color <expect.raw >expect && + test_cmp expect decoded_actual && + rm -rf bananas && + git submodule deinit bananas +' + +test_expect_success 'only move detection ignores white spaces' ' + git reset --hard && + q_to_tab <<-\EOF >text.txt && + a long line to exceed per-line minimum + another long line to exceed per-line minimum + original file + EOF + git add text.txt && + git commit -m "add text" && + q_to_tab <<-\EOF >text.txt && + Qa long line to exceed per-line minimum + Qanother long line to exceed per-line minimum + new file + EOF + + # Make sure we get a different diff using -w + git diff --color --color-moved -w >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + q_to_tab <<-\EOF >expected && + <BOLD>diff --git a/text.txt b/text.txt<RESET> + <BOLD>--- a/text.txt<RESET> + <BOLD>+++ b/text.txt<RESET> + <CYAN>@@ -1,3 +1,3 @@<RESET> + Qa long line to exceed per-line minimum<RESET> + Qanother long line to exceed per-line minimum<RESET> + <RED>-original file<RESET> + <GREEN>+<RESET><GREEN>new file<RESET> + EOF + test_cmp expected actual && + + # And now ignoring white space only in the move detection + git diff --color --color-moved \ + --color-moved-ws=ignore-all-space,ignore-space-change,ignore-space-at-eol >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + q_to_tab <<-\EOF >expected && + <BOLD>diff --git a/text.txt b/text.txt<RESET> + <BOLD>--- a/text.txt<RESET> + <BOLD>+++ b/text.txt<RESET> + <CYAN>@@ -1,3 +1,3 @@<RESET> + <BOLD;MAGENTA>-a long line to exceed per-line minimum<RESET> + <BOLD;MAGENTA>-another long line to exceed per-line minimum<RESET> + <RED>-original file<RESET> + <BOLD;CYAN>+<RESET>Q<BOLD;CYAN>a long line to exceed per-line minimum<RESET> + <BOLD;CYAN>+<RESET>Q<BOLD;CYAN>another long line to exceed per-line minimum<RESET> + <GREEN>+<RESET><GREEN>new file<RESET> + EOF + test_cmp expected actual +' + +test_expect_success 'compare whitespace delta across moved blocks' ' + + git reset --hard && + q_to_tab <<-\EOF >text.txt && + QIndented + QText across + Qsome lines + QBut! <- this stands out + QAdjusting with + QQdifferent starting + Qwhite spaces + QAnother outlier + QQQIndented + QQQText across + QQQfive lines + QQQthat has similar lines + QQQto previous blocks, but with different indent + QQQYetQAnotherQoutlierQ + QLine with internal w h i t e s p a c e change + EOF + + git add text.txt && + git commit -m "add text.txt" && + + q_to_tab <<-\EOF >text.txt && + QQIndented + QQText across + QQsome lines + QQQBut! <- this stands out + Adjusting with + Qdifferent starting + white spaces + AnotherQoutlier + QQIndented + QQText across + QQfive lines + QQthat has similar lines + QQto previous blocks, but with different indent + QQYetQAnotherQoutlier + QLine with internal whitespace change + EOF + + git diff --color --color-moved --color-moved-ws=allow-indentation-change >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + + q_to_tab <<-\EOF >expected && + <BOLD>diff --git a/text.txt b/text.txt<RESET> + <BOLD>--- a/text.txt<RESET> + <BOLD>+++ b/text.txt<RESET> + <CYAN>@@ -1,15 +1,15 @@<RESET> + <BOLD;MAGENTA>-QIndented<RESET> + <BOLD;MAGENTA>-QText across<RESET> + <BOLD;MAGENTA>-Qsome lines<RESET> + <RED>-QBut! <- this stands out<RESET> + <BOLD;MAGENTA>-QAdjusting with<RESET> + <BOLD;MAGENTA>-QQdifferent starting<RESET> + <BOLD;MAGENTA>-Qwhite spaces<RESET> + <RED>-QAnother outlier<RESET> + <BOLD;MAGENTA>-QQQIndented<RESET> + <BOLD;MAGENTA>-QQQText across<RESET> + <BOLD;MAGENTA>-QQQfive lines<RESET> + <BOLD;MAGENTA>-QQQthat has similar lines<RESET> + <BOLD;MAGENTA>-QQQto previous blocks, but with different indent<RESET> + <RED>-QQQYetQAnotherQoutlierQ<RESET> + <RED>-QLine with internal w h i t e s p a c e change<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>Indented<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>Text across<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>some lines<RESET> + <GREEN>+<RESET>QQQ<GREEN>But! <- this stands out<RESET> + <BOLD;CYAN>+<RESET><BOLD;CYAN>Adjusting with<RESET> + <BOLD;CYAN>+<RESET>Q<BOLD;CYAN>different starting<RESET> + <BOLD;CYAN>+<RESET><BOLD;CYAN>white spaces<RESET> + <GREEN>+<RESET><GREEN>AnotherQoutlier<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>Indented<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>Text across<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>five lines<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>that has similar lines<RESET> + <BOLD;CYAN>+<RESET>QQ<BOLD;CYAN>to previous blocks, but with different indent<RESET> + <GREEN>+<RESET>QQ<GREEN>YetQAnotherQoutlier<RESET> + <GREEN>+<RESET>Q<GREEN>Line with internal whitespace change<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'bogus settings in move detection erroring out' ' + test_must_fail git diff --color-moved=bogus 2>err && + test_i18ngrep "must be one of" err && + test_i18ngrep bogus err && + + test_must_fail git -c diff.colormoved=bogus diff 2>err && + test_i18ngrep "must be one of" err && + test_i18ngrep "from command-line config" err && + + test_must_fail git diff --color-moved-ws=bogus 2>err && + test_i18ngrep "possible values" err && + test_i18ngrep bogus err && + + test_must_fail git -c diff.colormovedws=bogus diff 2>err && + test_i18ngrep "possible values" err && + test_i18ngrep "from command-line config" err +' + +test_expect_success 'compare whitespace delta incompatible with other space options' ' + test_must_fail git diff \ + --color-moved-ws=allow-indentation-change,ignore-all-space \ + 2>err && + test_i18ngrep allow-indentation-change err +' + +EMPTY='' +test_expect_success 'compare mixed whitespace delta across moved blocks' ' + + git reset --hard && + tr Q_ "\t " <<-EOF >text.txt && + ${EMPTY} + ____too short without + ${EMPTY} + ___being grouped across blank line + ${EMPTY} + context + lines + to + anchor + ____Indented text to + _Q____be further indented by four spaces across + ____Qseveral lines + QQ____These two lines have had their + ____indentation reduced by four spaces + Qdifferent indentation change + ____too short + EOF + + git add text.txt && + git commit -m "add text.txt" && + + tr Q_ "\t " <<-EOF >text.txt && + context + lines + to + anchor + QIndented text to + QQbe further indented by four spaces across + Q____several lines + ${EMPTY} + QQtoo short without + ${EMPTY} + Q_______being grouped across blank line + ${EMPTY} + Q_QThese two lines have had their + indentation reduced by four spaces + QQdifferent indentation change + __Qtoo short + EOF + + git -c color.diff.whitespace="normal red" \ + -c core.whitespace=space-before-tab \ + diff --color --color-moved --ws-error-highlight=all \ + --color-moved-ws=allow-indentation-change >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + + cat <<-\EOF >expected && + <BOLD>diff --git a/text.txt b/text.txt<RESET> + <BOLD>--- a/text.txt<RESET> + <BOLD>+++ b/text.txt<RESET> + <CYAN>@@ -1,16 +1,16 @@<RESET> + <BOLD;MAGENTA>-<RESET> + <BOLD;MAGENTA>-<RESET><BOLD;MAGENTA> too short without<RESET> + <BOLD;MAGENTA>-<RESET> + <BOLD;MAGENTA>-<RESET><BOLD;MAGENTA> being grouped across blank line<RESET> + <BOLD;MAGENTA>-<RESET> + <RESET>context<RESET> + <RESET>lines<RESET> + <RESET>to<RESET> + <RESET>anchor<RESET> + <BOLD;MAGENTA>-<RESET><BOLD;MAGENTA> Indented text to<RESET> + <BOLD;MAGENTA>-<RESET><BRED> <RESET> <BOLD;MAGENTA> be further indented by four spaces across<RESET> + <BOLD;MAGENTA>-<RESET><BRED> <RESET> <BOLD;MAGENTA>several lines<RESET> + <BOLD;BLUE>-<RESET> <BOLD;BLUE> These two lines have had their<RESET> + <BOLD;BLUE>-<RESET><BOLD;BLUE> indentation reduced by four spaces<RESET> + <BOLD;MAGENTA>-<RESET> <BOLD;MAGENTA>different indentation change<RESET> + <RED>-<RESET><RED> too short<RESET> + <BOLD;CYAN>+<RESET> <BOLD;CYAN>Indented text to<RESET> + <BOLD;CYAN>+<RESET> <BOLD;CYAN>be further indented by four spaces across<RESET> + <BOLD;CYAN>+<RESET> <BOLD;CYAN> several lines<RESET> + <BOLD;YELLOW>+<RESET> + <BOLD;YELLOW>+<RESET> <BOLD;YELLOW>too short without<RESET> + <BOLD;YELLOW>+<RESET> + <BOLD;YELLOW>+<RESET> <BOLD;YELLOW> being grouped across blank line<RESET> + <BOLD;YELLOW>+<RESET> + <BOLD;CYAN>+<RESET> <BRED> <RESET> <BOLD;CYAN>These two lines have had their<RESET> + <BOLD;CYAN>+<RESET><BOLD;CYAN>indentation reduced by four spaces<RESET> + <BOLD;YELLOW>+<RESET> <BOLD;YELLOW>different indentation change<RESET> + <GREEN>+<RESET><BRED> <RESET> <GREEN>too short<RESET> + EOF + + test_cmp expected actual +' + +test_expect_success 'combine --ignore-blank-lines with --function-context' ' + test_write_lines 1 "" 2 3 4 5 >a && + test_write_lines 1 2 3 4 >b && + test_must_fail git diff --no-index \ + --ignore-blank-lines --function-context a b >actual.raw && + sed -n "/@@/,\$p" <actual.raw >actual && + cat <<-\EOF >expect && + @@ -1,6 +1,4 @@ + 1 + - + 2 + 3 + 4 + -5 + EOF + test_cmp expect actual +' + +test_expect_success 'combine --ignore-blank-lines with --function-context 2' ' + test_write_lines a b c "" function 1 2 3 4 5 "" 6 7 8 9 >a && + test_write_lines "" a b c "" function 1 2 3 4 5 6 7 8 >b && + test_must_fail git diff --no-index \ + --ignore-blank-lines --function-context a b >actual.raw && + sed -n "/@@/,\$p" <actual.raw >actual && + cat <<-\EOF >expect && + @@ -5,11 +6,9 @@ c + function + 1 + 2 + 3 + 4 + 5 + - + 6 + 7 + 8 + -9 + EOF + test_cmp expect actual +' + +test_done |