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-rwxr-xr-xt/t4020-diff-external.sh104
1 files changed, 101 insertions, 3 deletions
diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index a7602cf923..044620186d 100755
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -4,8 +4,6 @@ test_description='external diff interface test'
. ./test-lib.sh
-_z40=0000000000000000000000000000000000000000
-
test_expect_success setup '
test_tick &&
@@ -50,7 +48,53 @@ test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' '
'
+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$newhex" = "z$_z40" &&
+ 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$newhex" = "z$_z40" &&
+ 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 &&
@@ -115,6 +159,19 @@ test_expect_success 'diff attribute and --no-ext-diff' '
'
+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
@@ -136,6 +193,19 @@ test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
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 &&
@@ -156,12 +226,13 @@ keep_only_cr () {
}
test_expect_success 'external diff with autocrlf = true' '
- git config core.autocrlf true &&
+ test_config core.autocrlf true &&
GIT_EXTERNAL_DIFF=./fake-diff.sh git diff &&
test $(wc -l < crlfed.txt) = $(cat crlfed.txt | keep_only_cr | wc -c)
'
test_expect_success 'diff --cached' '
+ test_config core.autocrlf true &&
git add file &&
git update-index --assume-unchanged file &&
echo second >file &&
@@ -169,4 +240,31 @@ test_expect_success 'diff --cached' '
test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL 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