5404c116aa
Rename detection is a very convenient feature, and new users shouldn't have to dig in the documentation to benefit from it. Potential objections to activating rename detection are that it sometimes fail, and it is sometimes slow. But rename detection is already activated by default in several cases like "git status" and "git merge", so activating diff.renames does not fundamentally change the situation. When the rename detection fails, it now fails consistently between "git diff" and "git status". This setting does not affect plumbing commands, hence well-written scripts will not be affected. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
223 lines
4.7 KiB
Bash
Executable File
223 lines
4.7 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2005 Junio C Hamano
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#
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test_description='Test rename detection in diff engine.
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'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/diff-lib.sh
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test_expect_success 'setup' '
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cat >path0 <<-\EOF &&
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Line 1
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Line 2
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Line 3
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Line 4
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Line 5
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Line 6
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Line 7
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Line 8
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Line 9
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Line 10
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line 11
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Line 12
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Line 13
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Line 14
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Line 15
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EOF
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cat >expected <<-\EOF &&
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diff --git a/path0 b/path1
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rename from path0
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rename to path1
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--- a/path0
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+++ b/path1
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@@ -8,7 +8,7 @@ Line 7
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Line 8
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Line 9
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Line 10
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-line 11
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+Line 11
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Line 12
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Line 13
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Line 14
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EOF
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cat >no-rename <<-\EOF
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diff --git a/path0 b/path0
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deleted file mode 100644
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index fdbec44..0000000
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--- a/path0
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+++ /dev/null
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@@ -1,15 +0,0 @@
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-Line 1
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-Line 2
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-Line 3
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-Line 4
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-Line 5
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-Line 6
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-Line 7
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-Line 8
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-Line 9
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-Line 10
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-line 11
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-Line 12
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-Line 13
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-Line 14
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-Line 15
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diff --git a/path1 b/path1
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new file mode 100644
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index 0000000..752c50e
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--- /dev/null
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+++ b/path1
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@@ -0,0 +1,15 @@
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+Line 1
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+Line 2
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+Line 3
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+Line 4
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+Line 5
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+Line 6
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+Line 7
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+Line 8
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+Line 9
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+Line 10
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+Line 11
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+Line 12
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+Line 13
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+Line 14
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+Line 15
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EOF
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'
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test_expect_success \
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'update-index --add a file.' \
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'git update-index --add path0'
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test_expect_success \
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'write that tree.' \
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'tree=$(git write-tree) && echo $tree'
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sed -e 's/line/Line/' <path0 >path1
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rm -f path0
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test_expect_success \
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'renamed and edited the file.' \
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'git update-index --add --remove path0 path1'
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test_expect_success \
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'git diff-index -p -M after rename and editing.' \
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'git diff-index -p -M $tree >current'
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test_expect_success \
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'validate the output.' \
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'compare_diff_patch current expected'
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test_expect_success 'test diff.renames=true' '
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git -c diff.renames=true diff --cached $tree >current &&
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compare_diff_patch current expected
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'
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test_expect_success 'test diff.renames=false' '
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git -c diff.renames=false diff --cached $tree >current &&
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compare_diff_patch current no-rename
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'
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test_expect_success 'test diff.renames unset' '
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git diff --cached $tree >current &&
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compare_diff_patch current expected
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'
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test_expect_success 'favour same basenames over different ones' '
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cp path1 another-path &&
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git add another-path &&
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git commit -m 1 &&
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git rm path1 &&
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mkdir subdir &&
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git mv another-path subdir/path1 &&
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git status | test_i18ngrep "renamed: .*path1 -> subdir/path1"'
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test_expect_success 'favour same basenames even with minor differences' '
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git show HEAD:path1 | sed "s/15/16/" > subdir/path1 &&
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git status | test_i18ngrep "renamed: .*path1 -> subdir/path1"'
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test_expect_success 'setup for many rename source candidates' '
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git reset --hard &&
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for i in 0 1 2 3 4 5 6 7 8 9;
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do
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for j in 0 1 2 3 4 5 6 7 8 9;
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do
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echo "$i$j" >"path$i$j"
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done
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done &&
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git add "path??" &&
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test_tick &&
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git commit -m "hundred" &&
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(cat path1; echo new) >new-path &&
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echo old >>path1 &&
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git add new-path path1 &&
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git diff -l 4 -C -C --cached --name-status >actual 2>actual.err &&
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sed -e "s/^\([CM]\)[0-9]* /\1 /" actual >actual.munged &&
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cat >expect <<-EOF &&
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C path1 new-path
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M path1
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EOF
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test_cmp expect actual.munged &&
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grep warning actual.err
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'
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test_expect_success 'rename pretty print with nothing in common' '
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mkdir -p a/b/ &&
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: >a/b/c &&
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git add a/b/c &&
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git commit -m "create a/b/c" &&
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mkdir -p c/b/ &&
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git mv a/b/c c/b/a &&
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git commit -m "a/b/c -> c/b/a" &&
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git diff -M --summary HEAD^ HEAD >output &&
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test_i18ngrep " a/b/c => c/b/a " output &&
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git diff -M --stat HEAD^ HEAD >output &&
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test_i18ngrep " a/b/c => c/b/a " output
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'
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test_expect_success 'rename pretty print with common prefix' '
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mkdir -p c/d &&
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git mv c/b/a c/d/e &&
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git commit -m "c/b/a -> c/d/e" &&
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git diff -M --summary HEAD^ HEAD >output &&
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test_i18ngrep " c/{b/a => d/e} " output &&
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git diff -M --stat HEAD^ HEAD >output &&
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test_i18ngrep " c/{b/a => d/e} " output
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'
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test_expect_success 'rename pretty print with common suffix' '
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mkdir d &&
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git mv c/d/e d/e &&
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git commit -m "c/d/e -> d/e" &&
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git diff -M --summary HEAD^ HEAD >output &&
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test_i18ngrep " {c/d => d}/e " output &&
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git diff -M --stat HEAD^ HEAD >output &&
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test_i18ngrep " {c/d => d}/e " output
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'
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test_expect_success 'rename pretty print with common prefix and suffix' '
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mkdir d/f &&
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git mv d/e d/f/e &&
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git commit -m "d/e -> d/f/e" &&
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git diff -M --summary HEAD^ HEAD >output &&
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test_i18ngrep " d/{ => f}/e " output &&
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git diff -M --stat HEAD^ HEAD >output &&
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test_i18ngrep " d/{ => f}/e " output
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'
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test_expect_success 'rename pretty print common prefix and suffix overlap' '
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mkdir d/f/f &&
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git mv d/f/e d/f/f/e &&
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git commit -m "d/f/e d/f/f/e" &&
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git diff -M --summary HEAD^ HEAD >output &&
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test_i18ngrep " d/f/{ => f}/e " output &&
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git diff -M --stat HEAD^ HEAD >output &&
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test_i18ngrep " d/f/{ => f}/e " output
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'
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test_done
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