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12bd17521c
Performance optimization work on the rename detection continues. * en/diffcore-rename: merge-ort: call diffcore_rename() directly gitdiffcore doc: mention new preliminary step for rename detection diffcore-rename: guide inexact rename detection based on basenames diffcore-rename: complete find_basename_matches() diffcore-rename: compute basenames of source and dest candidates t4001: add a test comparing basename similarity and content similarity diffcore-rename: filter rename_src list when possible diffcore-rename: no point trying to find a match better than exact
290 lines
6.6 KiB
Bash
Executable File
290 lines
6.6 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"/lib-diff.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 >out &&
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test_i18ngrep "renamed: .*path1 -> subdir/path1" out
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'
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test_expect_success 'test diff.renames=true for git status' '
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git -c diff.renames=true status >out &&
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test_i18ngrep "renamed: .*path1 -> subdir/path1" out
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'
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test_expect_success 'test diff.renames=false for git status' '
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git -c diff.renames=false status >out &&
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test_i18ngrep ! "renamed: .*path1 -> subdir/path1" out &&
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test_i18ngrep "new file: .*subdir/path1" out &&
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test_i18ngrep "deleted: .*[^/]path1" out
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'
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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 >out &&
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test_i18ngrep "renamed: .*path1 -> subdir/path1" out
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'
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test_expect_success 'two files with same basename and same content' '
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git reset --hard &&
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mkdir -p dir/A dir/B &&
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cp path1 dir/A/file &&
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cp path1 dir/B/file &&
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git add dir &&
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git commit -m 2 &&
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git mv dir other-dir &&
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git status >out &&
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test_i18ngrep "renamed: .*dir/A/file -> other-dir/A/file" out
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'
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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_expect_success 'diff-tree -l0 defaults to a big rename limit, not zero' '
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test_write_lines line1 line2 line3 >myfile &&
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git add myfile &&
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git commit -m x &&
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test_write_lines line1 line2 line4 >myotherfile &&
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git rm myfile &&
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git add myotherfile &&
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git commit -m x &&
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git diff-tree -M -l0 HEAD HEAD^ >actual &&
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# Verify that a rename from myotherfile to myfile was detected
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grep "myotherfile.*myfile" actual
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'
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test_expect_success 'basename similarity vs best similarity' '
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mkdir subdir &&
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test_write_lines line1 line2 line3 line4 line5 \
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line6 line7 line8 line9 line10 >subdir/file.txt &&
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git add subdir/file.txt &&
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git commit -m "base txt" &&
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git rm subdir/file.txt &&
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test_write_lines line1 line2 line3 line4 line5 \
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line6 line7 line8 >file.txt &&
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test_write_lines line1 line2 line3 line4 line5 \
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line6 line7 line8 line9 >file.md &&
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git add file.txt file.md &&
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git commit -a -m "rename" &&
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git diff-tree -r -M --name-status HEAD^ HEAD >actual &&
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# subdir/file.txt is 88% similar to file.md, 78% similar to file.txt,
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# but since same basenames are checked first...
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cat >expected <<-\EOF &&
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A file.md
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R078 subdir/file.txt file.txt
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EOF
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test_cmp expected actual
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'
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test_done
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