ewah: support platforms that require aligned reads

diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh
old mode 100644 (file)
new mode 100755 (executable)
index 44225f7..2f327b7
--- a/t/t4001-diff-rename.sh
+++ b/t/t4001-diff-rename.sh
@@ -7,6 +7,7 @@ test_description='Test rename detection in diff engine.
 
 '
 . ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
 
 echo >path0 'Line 1
 Line 2
@@ -26,26 +27,26 @@ Line 15
 '
 
 test_expect_success \
-    'update-cache --add a file.' \
-    'git-update-cache --add path0'
+    'update-index --add a file.' \
+    'git update-index --add path0'
 
 test_expect_success \
     'write that tree.' \
-    'tree=$(git-write-tree)'
+    'tree=$(git write-tree) && echo $tree'
 
 sed -e 's/line/Line/' <path0 >path1
 rm -f path0
 test_expect_success \
     'renamed and edited the file.' \
-    'git-update-cache --add --remove path0 path1'
+    'git update-index --add --remove path0 path1'
 
 test_expect_success \
-    'git-diff-cache -p -M after rename and editing.' \
-    'git-diff-cache -p -M $tree >current'
+    'git diff-index -p -M after rename and editing.' \
+    'git diff-index -p -M $tree >current'
 cat >expected <<\EOF
 diff --git a/path0 b/path1
-rename old path0
-rename new path1
+rename from path0
+rename to path1
 --- a/path0
 +++ b/path1
 @@ -8,7 +8,7 @@ Line 7
@@ -58,3 +59,101 @@ rename new path1
  Line 13
  Line 14
 EOF
+
+test_expect_success \
+    'validate the output.' \
+    'compare_diff_patch current expected'
+
+test_expect_success 'favour same basenames over different ones' '
+       cp path1 another-path &&
+       git add another-path &&
+       git commit -m 1 &&
+       git rm path1 &&
+       mkdir subdir &&
+       git mv another-path subdir/path1 &&
+       git status | test_i18ngrep "renamed: .*path1 -> subdir/path1"'
+
+test_expect_success 'favour same basenames even with minor differences' '
+       git show HEAD:path1 | sed "s/15/16/" > subdir/path1 &&
+       git status | test_i18ngrep "renamed: .*path1 -> subdir/path1"'
+
+test_expect_success 'setup for many rename source candidates' '
+       git reset --hard &&
+       for i in 0 1 2 3 4 5 6 7 8 9;
+       do
+               for j in 0 1 2 3 4 5 6 7 8 9;
+               do
+                       echo "$i$j" >"path$i$j"
+               done
+       done &&
+       git add "path??" &&
+       test_tick &&
+       git commit -m "hundred" &&
+       (cat path1; echo new) >new-path &&
+       echo old >>path1 &&
+       git add new-path path1 &&
+       git diff -l 4 -C -C --cached --name-status >actual 2>actual.err &&
+       sed -e "s/^\([CM]\)[0-9]*       /\1     /" actual >actual.munged &&
+       cat >expect <<-EOF &&
+       C       path1   new-path
+       M       path1
+       EOF
+       test_cmp expect actual.munged &&
+       grep warning actual.err
+'
+
+test_expect_success 'rename pretty print with nothing in common' '
+       mkdir -p a/b/ &&
+       : >a/b/c &&
+       git add a/b/c &&
+       git commit -m "create a/b/c" &&
+       mkdir -p c/b/ &&
+       git mv a/b/c c/b/a &&
+       git commit -m "a/b/c -> c/b/a" &&
+       git diff -M --summary HEAD^ HEAD >output &&
+       test_i18ngrep " a/b/c => c/b/a " output &&
+       git diff -M --stat HEAD^ HEAD >output &&
+       test_i18ngrep " a/b/c => c/b/a " output
+'
+
+test_expect_success 'rename pretty print with common prefix' '
+       mkdir -p c/d &&
+       git mv c/b/a c/d/e &&
+       git commit -m "c/b/a -> c/d/e" &&
+       git diff -M --summary HEAD^ HEAD >output &&
+       test_i18ngrep " c/{b/a => d/e} " output &&
+       git diff -M --stat HEAD^ HEAD >output &&
+       test_i18ngrep " c/{b/a => d/e} " output
+'
+
+test_expect_success 'rename pretty print with common suffix' '
+       mkdir d &&
+       git mv c/d/e d/e &&
+       git commit -m "c/d/e -> d/e" &&
+       git diff -M --summary HEAD^ HEAD >output &&
+       test_i18ngrep " {c/d => d}/e " output &&
+       git diff -M --stat HEAD^ HEAD >output &&
+       test_i18ngrep " {c/d => d}/e " output
+'
+
+test_expect_success 'rename pretty print with common prefix and suffix' '
+       mkdir d/f &&
+       git mv d/e d/f/e &&
+       git commit -m "d/e -> d/f/e" &&
+       git diff -M --summary HEAD^ HEAD >output &&
+       test_i18ngrep " d/{ => f}/e " output &&
+       git diff -M --stat HEAD^ HEAD >output &&
+       test_i18ngrep " d/{ => f}/e " output
+'
+
+test_expect_success 'rename pretty print common prefix and suffix overlap' '
+       mkdir d/f/f &&
+       git mv d/f/e d/f/f/e &&
+       git commit -m "d/f/e d/f/f/e" &&
+       git diff -M --summary HEAD^ HEAD >output &&
+       test_i18ngrep " d/f/{ => f}/e " output &&
+       git diff -M --stat HEAD^ HEAD >output &&
+       test_i18ngrep " d/f/{ => f}/e " output
+'
+
+test_done