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-rwxr-xr-xt/t4061-diff-indent.sh216
1 files changed, 216 insertions, 0 deletions
diff --git a/t/t4061-diff-indent.sh b/t/t4061-diff-indent.sh
new file mode 100755
index 0000000..5564506
--- /dev/null
+++ b/t/t4061-diff-indent.sh
@@ -0,0 +1,216 @@
+#!/bin/sh
+
+test_description='Test diff indent heuristic.
+
+'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
+
+# Compare two diff outputs. Ignore "index" lines, because we don't
+# care about SHA-1s or file modes.
+compare_diff () {
+ sed -e "/^index /d" <"$1" >.tmp-1
+ sed -e "/^index /d" <"$2" >.tmp-2
+ test_cmp .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
+}
+
+# Compare blame output using the expectation for a diff as reference.
+# Only look for the lines coming from non-boundary commits.
+compare_blame () {
+ sed -n -e "1,4d" -e "s/^\+//p" <"$1" >.tmp-1
+ sed -ne "s/^[^^][^)]*) *//p" <"$2" >.tmp-2
+ test_cmp .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
+}
+
+test_expect_success 'prepare' '
+ cat <<-\EOF >spaces.txt &&
+ 1
+ 2
+ a
+
+ b
+ 3
+ 4
+ EOF
+
+ cat <<-\EOF >functions.c &&
+ 1
+ 2
+ /* function */
+ foo() {
+ foo
+ }
+
+ 3
+ 4
+ EOF
+
+ git add spaces.txt functions.c &&
+ test_tick &&
+ git commit -m initial &&
+ git branch old &&
+
+ cat <<-\EOF >spaces.txt &&
+ 1
+ 2
+ a
+
+ b
+ a
+
+ b
+ 3
+ 4
+ EOF
+
+ cat <<-\EOF >functions.c &&
+ 1
+ 2
+ /* function */
+ bar() {
+ foo
+ }
+
+ /* function */
+ foo() {
+ foo
+ }
+
+ 3
+ 4
+ EOF
+
+ git add spaces.txt functions.c &&
+ test_tick &&
+ git commit -m initial &&
+ git branch new &&
+
+ tr "_" " " <<-\EOF >spaces-expect &&
+ diff --git a/spaces.txt b/spaces.txt
+ --- a/spaces.txt
+ +++ b/spaces.txt
+ @@ -3,5 +3,8 @@
+ a
+ _
+ b
+ +a
+ +
+ +b
+ 3
+ 4
+ EOF
+
+ tr "_" " " <<-\EOF >spaces-compacted-expect &&
+ diff --git a/spaces.txt b/spaces.txt
+ --- a/spaces.txt
+ +++ b/spaces.txt
+ @@ -2,6 +2,9 @@
+ 2
+ a
+ _
+ +b
+ +a
+ +
+ b
+ 3
+ 4
+ EOF
+
+ tr "_" " " <<-\EOF >functions-expect &&
+ diff --git a/functions.c b/functions.c
+ --- a/functions.c
+ +++ b/functions.c
+ @@ -1,6 +1,11 @@
+ 1
+ 2
+ /* function */
+ +bar() {
+ + foo
+ +}
+ +
+ +/* function */
+ foo() {
+ foo
+ }
+ EOF
+
+ tr "_" " " <<-\EOF >functions-compacted-expect
+ diff --git a/functions.c b/functions.c
+ --- a/functions.c
+ +++ b/functions.c
+ @@ -1,5 +1,10 @@
+ 1
+ 2
+ +/* function */
+ +bar() {
+ + foo
+ +}
+ +
+ /* function */
+ foo() {
+ foo
+ EOF
+'
+
+test_expect_success 'diff: ugly spaces' '
+ git diff old new -- spaces.txt >out &&
+ compare_diff spaces-expect out
+'
+
+test_expect_success 'diff: nice spaces with --indent-heuristic' '
+ git diff --indent-heuristic old new -- spaces.txt >out-compacted &&
+ compare_diff spaces-compacted-expect out-compacted
+'
+
+test_expect_success 'diff: nice spaces with diff.indentHeuristic' '
+ git -c diff.indentHeuristic=true diff old new -- spaces.txt >out-compacted2 &&
+ compare_diff spaces-compacted-expect out-compacted2
+'
+
+test_expect_success 'diff: --no-indent-heuristic overrides config' '
+ git -c diff.indentHeuristic=true diff --no-indent-heuristic old new -- spaces.txt >out2 &&
+ compare_diff spaces-expect out2
+'
+
+test_expect_success 'diff: --indent-heuristic with --patience' '
+ git diff --indent-heuristic --patience old new -- spaces.txt >out-compacted3 &&
+ compare_diff spaces-compacted-expect out-compacted3
+'
+
+test_expect_success 'diff: --indent-heuristic with --histogram' '
+ git diff --indent-heuristic --histogram old new -- spaces.txt >out-compacted4 &&
+ compare_diff spaces-compacted-expect out-compacted4
+'
+
+test_expect_success 'diff: ugly functions' '
+ git diff old new -- functions.c >out &&
+ compare_diff functions-expect out
+'
+
+test_expect_success 'diff: nice functions with --indent-heuristic' '
+ git diff --indent-heuristic old new -- functions.c >out-compacted &&
+ compare_diff functions-compacted-expect out-compacted
+'
+
+test_expect_success 'blame: ugly spaces' '
+ git blame old..new -- spaces.txt >out-blame &&
+ compare_blame spaces-expect out-blame
+'
+
+test_expect_success 'blame: nice spaces with --indent-heuristic' '
+ git blame --indent-heuristic old..new -- spaces.txt >out-blame-compacted &&
+ compare_blame spaces-compacted-expect out-blame-compacted
+'
+
+test_expect_success 'blame: nice spaces with diff.indentHeuristic' '
+ git -c diff.indentHeuristic=true blame old..new -- spaces.txt >out-blame-compacted2 &&
+ compare_blame spaces-compacted-expect out-blame-compacted2
+'
+
+test_expect_success 'blame: --no-indent-heuristic overrides config' '
+ git -c diff.indentHeuristic=true blame --no-indent-heuristic old..new -- spaces.txt >out-blame2 &&
+ git blame old..new -- spaces.txt >out-blame &&
+ compare_blame spaces-expect out-blame2
+'
+
+test_done