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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
commitc8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch)
tree24e09d9f84dec336720cf393e156089ca2835791 /t/t4051-diff-function-context.sh
parentInitial commit. (diff)
downloadgit-17a789943131483bc454986d1be6da6caaabce8c.tar.xz
git-17a789943131483bc454986d1be6da6caaabce8c.zip
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/t4051-diff-function-context.sh')
-rwxr-xr-xt/t4051-diff-function-context.sh213
1 files changed, 213 insertions, 0 deletions
diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh
new file mode 100755
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+++ b/t/t4051-diff-function-context.sh
@@ -0,0 +1,213 @@
+#!/bin/sh
+
+test_description='diff function context'
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+dir="$TEST_DIRECTORY/t4051"
+
+commit_and_tag () {
+ tag=$1 &&
+ shift &&
+ git add "$@" &&
+ test_tick &&
+ git commit -m "$tag" &&
+ git tag "$tag"
+}
+
+first_context_line () {
+ awk '
+ found {print; exit}
+ /^@@/ {found = 1}
+ '
+}
+
+last_context_line () {
+ sed -ne \$p
+}
+
+check_diff () {
+ name=$1
+ desc=$2
+ options="-W $3"
+
+ test_expect_success "$desc" '
+ git diff $options "$name^" "$name" >"$name.diff"
+ '
+
+ test_expect_success ' diff applies' '
+ test_when_finished "git reset --hard" &&
+ git checkout --detach "$name^" &&
+ git apply --index "$name.diff" &&
+ git diff --exit-code "$name"
+ '
+}
+
+test_expect_success 'setup' '
+ cat "$dir/includes.c" "$dir/dummy.c" "$dir/dummy.c" "$dir/hello.c" \
+ "$dir/dummy.c" "$dir/dummy.c" >file.c &&
+ commit_and_tag initial file.c &&
+
+ grep -v "delete me from hello" <file.c >file.c.new &&
+ mv file.c.new file.c &&
+ commit_and_tag changed_hello file.c &&
+
+ grep -v "delete me from includes" <file.c >file.c.new &&
+ mv file.c.new file.c &&
+ commit_and_tag changed_includes file.c &&
+
+ cat "$dir/appended1.c" >>file.c &&
+ commit_and_tag appended file.c &&
+
+ cat "$dir/appended2.c" >>file.c &&
+ commit_and_tag extended file.c &&
+
+ grep -v "Begin of second part" <file.c >file.c.new &&
+ mv file.c.new file.c &&
+ commit_and_tag long_common_tail file.c &&
+
+ git checkout initial &&
+ cat "$dir/hello.c" "$dir/dummy.c" >file.c &&
+ commit_and_tag hello_dummy file.c &&
+
+ # overlap function context of 1st change and -u context of 2nd change
+ grep -v "delete me from hello" <"$dir/hello.c" >file.c &&
+ sed "2a\\
+ extra line" <"$dir/dummy.c" >>file.c &&
+ commit_and_tag changed_hello_dummy file.c &&
+
+ git checkout initial &&
+ grep -v "delete me from hello" <file.c >file.c.new &&
+ mv file.c.new file.c &&
+ cat "$dir/appended1.c" >>file.c &&
+ commit_and_tag changed_hello_appended file.c
+'
+
+check_diff changed_hello 'changed function'
+
+test_expect_success ' context includes comment' '
+ grep "^ .*Hello comment" changed_hello.diff
+'
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin of hello" changed_hello.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^ .*End of hello" changed_hello.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" changed_hello.diff) -le 1
+'
+
+test_expect_success ' context does not include preceding empty lines' '
+ test "$(first_context_line <changed_hello.diff)" != " "
+'
+
+test_expect_success ' context does not include trailing empty lines' '
+ test "$(last_context_line <changed_hello.diff)" != " "
+'
+
+check_diff changed_includes 'changed includes'
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin.h" changed_includes.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^ .*End.h" changed_includes.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" changed_includes.diff) -le 1
+'
+
+test_expect_success ' context does not include trailing empty lines' '
+ test "$(last_context_line <changed_includes.diff)" != " "
+'
+
+check_diff appended 'appended function'
+
+test_expect_success ' context includes begin' '
+ grep "^[+].*Begin of first part" appended.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^[+].*End of first part" appended.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" appended.diff) -le 1
+'
+
+check_diff extended 'appended function part'
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin of first part" extended.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^[+].*End of second part" extended.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" extended.diff) -le 2
+'
+
+test_expect_success ' context does not include preceding empty lines' '
+ test "$(first_context_line <extended.diff)" != " "
+'
+
+check_diff long_common_tail 'change with long common tail and no context' -U0
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin of first part" long_common_tail.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^ .*End of second part" long_common_tail.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" long_common_tail.diff) -le 2
+'
+
+test_expect_success ' context does not include preceding empty lines' '
+ test "$(first_context_line <long_common_tail.diff)" != " "
+'
+
+check_diff changed_hello_appended 'changed function plus appended function'
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin of hello" changed_hello_appended.diff &&
+ grep "^[+].*Begin of first part" changed_hello_appended.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^ .*End of hello" changed_hello_appended.diff &&
+ grep "^[+].*End of first part" changed_hello_appended.diff
+'
+
+test_expect_success ' context does not include other functions' '
+ test $(grep -c "^[ +-].*Begin" changed_hello_appended.diff) -le 2
+'
+
+check_diff changed_hello_dummy 'changed two consecutive functions'
+
+test_expect_success ' context includes begin' '
+ grep "^ .*Begin of hello" changed_hello_dummy.diff &&
+ grep "^ .*Begin of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' context includes end' '
+ grep "^ .*End of hello" changed_hello_dummy.diff &&
+ grep "^ .*End of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' overlapping hunks are merged' '
+ test $(grep -c "^@@" changed_hello_dummy.diff) -eq 1
+'
+
+test_done