diff options
Diffstat (limited to 'third_party/git/t/t4020-diff-external.sh')
| -rwxr-xr-x | third_party/git/t/t4020-diff-external.sh | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/third_party/git/t/t4020-diff-external.sh b/third_party/git/t/t4020-diff-external.sh new file mode 100755 index 000000000000..e009826fcbe5 --- /dev/null +++ b/third_party/git/t/t4020-diff-external.sh @@ -0,0 +1,276 @@ +#!/bin/sh + +test_description='external diff interface test' + +. ./test-lib.sh + +test_expect_success setup ' + + test_tick && + echo initial >file && + git add file && + git commit -m initial && + + test_tick && + echo second >file && + before=$(git hash-object file) && + before=$(git rev-parse --short $before) && + git add file && + git commit -m second && + + test_tick && + echo third >file +' + +test_expect_success 'GIT_EXTERNAL_DIFF environment' ' + + GIT_EXTERNAL_DIFF=echo git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$ZERO_OID" && + test "z$newmode" = z100644 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } + +' + +test_expect_success 'GIT_EXTERNAL_DIFF environment should apply only to diff' ' + + GIT_EXTERNAL_DIFF=echo git log -p -1 HEAD | + grep "^diff --git a/file b/file" + +' + +test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' ' + + GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff | + grep "^diff --git a/file b/file" + +' + +test_expect_success SYMLINKS 'typechange diff' ' + rm -f file && + ln -s elif file && + GIT_EXTERNAL_DIFF=echo git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$ZERO_OID" && + test "z$newmode" = z120000 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } && + GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >actual && + git diff >expect && + test_cmp expect actual +' + +test_expect_success 'diff.external' ' + git reset --hard && + echo third >file && + test_config diff.external echo && + git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$ZERO_OID" && + test "z$newmode" = z100644 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } +' + +test_expect_success 'diff.external should apply only to diff' ' + test_config diff.external echo && + git log -p -1 HEAD | + grep "^diff --git a/file b/file" +' + +test_expect_success 'diff.external and --no-ext-diff' ' + test_config diff.external echo && + git diff --no-ext-diff | + grep "^diff --git a/file b/file" +' + +test_expect_success 'diff attribute' ' + git reset --hard && + echo third >file && + + git config diff.parrot.command echo && + + echo >.gitattributes "file diff=parrot" && + + git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$ZERO_OID" && + test "z$newmode" = z100644 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } + +' + +test_expect_success 'diff attribute should apply only to diff' ' + + git log -p -1 HEAD | + grep "^diff --git a/file b/file" + +' + +test_expect_success 'diff attribute and --no-ext-diff' ' + + git diff --no-ext-diff | + grep "^diff --git a/file b/file" + +' + +test_expect_success 'diff attribute' ' + + git config --unset diff.parrot.command && + git config diff.color.command echo && + + echo >.gitattributes "file diff=color" && + + git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$ZERO_OID" && + test "z$newmode" = z100644 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } + +' + +test_expect_success 'diff attribute should apply only to diff' ' + + git log -p -1 HEAD | + grep "^diff --git a/file b/file" + +' + +test_expect_success 'diff attribute and --no-ext-diff' ' + + git diff --no-ext-diff | + grep "^diff --git a/file b/file" + +' + +test_expect_success 'GIT_EXTERNAL_DIFF trumps diff.external' ' + >.gitattributes && + test_config diff.external "echo ext-global" && + GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-env +' + +test_expect_success 'attributes trump GIT_EXTERNAL_DIFF and diff.external' ' + test_config diff.foo.command "echo ext-attribute" && + test_config diff.external "echo ext-global" && + echo "file diff=foo" >.gitattributes && + GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-attribute +' + +test_expect_success 'no diff with -diff' ' + echo >.gitattributes "file -diff" && + git diff | grep Binary +' + +echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file + +test_expect_success 'force diff with "diff"' ' + after=$(git hash-object file) && + after=$(git rev-parse --short $after) && + echo >.gitattributes "file diff" && + git diff >actual && + sed -e "s/^index .*/index $before..$after 100644/" \ + "$TEST_DIRECTORY"/t4020/diff.NUL >expected-diff && + test_cmp expected-diff actual +' + +test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' ' + echo anotherfile > file2 && + git add file2 && + git commit -m "added 2nd file" && + echo modified >file2 && + GIT_EXTERNAL_DIFF=echo git diff +' + +test_expect_success 'GIT_EXTERNAL_DIFF path counter/total' ' + write_script external-diff.sh <<-\EOF && + echo $GIT_DIFF_PATH_COUNTER of $GIT_DIFF_PATH_TOTAL >>counter.txt + EOF + >counter.txt && + cat >expect <<-\EOF && + 1 of 2 + 2 of 2 + EOF + GIT_EXTERNAL_DIFF=./external-diff.sh git diff && + test_cmp expect counter.txt +' + +test_expect_success 'GIT_EXTERNAL_DIFF generates pretty paths' ' + touch file.ext && + git add file.ext && + echo with extension > file.ext && + GIT_EXTERNAL_DIFF=echo git diff file.ext | grep ......_file\.ext && + git update-index --force-remove file.ext && + rm file.ext +' + +echo "#!$SHELL_PATH" >fake-diff.sh +cat >> fake-diff.sh <<\EOF +cat $2 >> crlfed.txt +EOF +chmod a+x fake-diff.sh + +keep_only_cr () { + tr -dc '\015' +} + +test_expect_success 'external diff with autocrlf = true' ' + test_config core.autocrlf true && + GIT_EXTERNAL_DIFF=./fake-diff.sh git diff && + test $(wc -l < crlfed.txt) = $(cat crlfed.txt | keep_only_cr | wc -c) +' + +test_expect_success 'diff --cached' ' + test_config core.autocrlf true && + git add file && + git update-index --assume-unchanged file && + echo second >file && + git diff --cached >actual && + test_cmp expected-diff actual +' + +test_expect_success 'clean up crlf leftovers' ' + git update-index --no-assume-unchanged file && + rm -f file* && + git reset --hard +' + +test_expect_success 'submodule diff' ' + git init sub && + ( cd sub && test_commit sub1 ) && + git add sub && + test_tick && + git commit -m "add submodule" && + ( cd sub && test_commit sub2 ) && + write_script gather_pre_post.sh <<-\EOF && + echo "$1 $4" # path, mode + cat "$2" # old file + cat "$5" # new file + EOF + GIT_EXTERNAL_DIFF=./gather_pre_post.sh git diff >actual && + cat >expected <<-EOF && + sub 160000 + Subproject commit $(git rev-parse HEAD:sub) + Subproject commit $(cd sub && git rev-parse HEAD) + EOF + test_cmp expected actual +' + +test_done |