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![Stefan Beller](/assets/img/avatar_default.png)
The feature was included in v2.11 (released 2016-11-29) and we got no negative feedback. Quite the opposite, all feedback we got was positive. Turn it on by default. Users who dislike the feature can turn it off by setting diff.indentHeuristic (which also configures plumbing commands, see prior patches). The change to t/t4051-diff-function-context.sh is needed because the heuristic shifts the changed hunk in the patch. To get the same result regardless of the heuristic configuration, we modify the test file differently: We insert a completely new line after line 2, instead of simply duplicating it. Helped-by: Jeff King <peff@peff.net> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Marc Branchaud <marcnarc@xiplink.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
209 lines
5.3 KiB
Bash
Executable file
209 lines
5.3 KiB
Bash
Executable file
#!/bin/sh
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test_description='diff function context'
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. ./test-lib.sh
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dir="$TEST_DIRECTORY/t4051"
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commit_and_tag () {
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tag=$1 &&
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shift &&
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git add "$@" &&
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test_tick &&
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git commit -m "$tag" &&
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git tag "$tag"
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}
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first_context_line () {
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awk '
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found {print; exit}
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/^@@/ {found = 1}
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'
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}
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last_context_line () {
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sed -ne \$p
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}
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check_diff () {
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name=$1
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desc=$2
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options="-W $3"
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test_expect_success "$desc" '
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git diff $options "$name^" "$name" >"$name.diff"
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'
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test_expect_success ' diff applies' '
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test_when_finished "git reset --hard" &&
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git checkout --detach "$name^" &&
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git apply --index "$name.diff" &&
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git diff --exit-code "$name"
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'
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}
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test_expect_success 'setup' '
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cat "$dir/includes.c" "$dir/dummy.c" "$dir/dummy.c" "$dir/hello.c" \
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"$dir/dummy.c" "$dir/dummy.c" >file.c &&
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commit_and_tag initial file.c &&
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grep -v "delete me from hello" <file.c >file.c.new &&
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mv file.c.new file.c &&
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commit_and_tag changed_hello file.c &&
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grep -v "delete me from includes" <file.c >file.c.new &&
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mv file.c.new file.c &&
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commit_and_tag changed_includes file.c &&
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cat "$dir/appended1.c" >>file.c &&
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commit_and_tag appended file.c &&
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cat "$dir/appended2.c" >>file.c &&
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commit_and_tag extended file.c &&
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grep -v "Begin of second part" <file.c >file.c.new &&
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mv file.c.new file.c &&
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commit_and_tag long_common_tail file.c &&
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git checkout initial &&
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cat "$dir/hello.c" "$dir/dummy.c" >file.c &&
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commit_and_tag hello_dummy file.c &&
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# overlap function context of 1st change and -u context of 2nd change
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grep -v "delete me from hello" <"$dir/hello.c" >file.c &&
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sed "2a\\
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extra line" <"$dir/dummy.c" >>file.c &&
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commit_and_tag changed_hello_dummy file.c &&
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git checkout initial &&
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grep -v "delete me from hello" <file.c >file.c.new &&
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mv file.c.new file.c &&
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cat "$dir/appended1.c" >>file.c &&
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commit_and_tag changed_hello_appended file.c
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'
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check_diff changed_hello 'changed function'
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test_expect_success ' context includes begin' '
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grep "^ .*Begin of hello" changed_hello.diff
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'
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test_expect_success ' context includes end' '
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grep "^ .*End of hello" changed_hello.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" changed_hello.diff) -le 1
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'
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test_expect_success ' context does not include preceding empty lines' '
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test "$(first_context_line <changed_hello.diff)" != " "
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'
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test_expect_success ' context does not include trailing empty lines' '
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test "$(last_context_line <changed_hello.diff)" != " "
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'
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check_diff changed_includes 'changed includes'
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test_expect_success ' context includes begin' '
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grep "^ .*Begin.h" changed_includes.diff
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'
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test_expect_success ' context includes end' '
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grep "^ .*End.h" changed_includes.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" changed_includes.diff) -le 1
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'
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test_expect_success ' context does not include trailing empty lines' '
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test "$(last_context_line <changed_includes.diff)" != " "
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'
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check_diff appended 'appended function'
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test_expect_success ' context includes begin' '
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grep "^[+].*Begin of first part" appended.diff
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'
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test_expect_success ' context includes end' '
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grep "^[+].*End of first part" appended.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" appended.diff) -le 1
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'
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check_diff extended 'appended function part'
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test_expect_success ' context includes begin' '
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grep "^ .*Begin of first part" extended.diff
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'
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test_expect_success ' context includes end' '
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grep "^[+].*End of second part" extended.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" extended.diff) -le 2
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'
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test_expect_success ' context does not include preceding empty lines' '
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test "$(first_context_line <extended.diff)" != " "
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'
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check_diff long_common_tail 'change with long common tail and no context' -U0
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test_expect_success ' context includes begin' '
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grep "^ .*Begin of first part" long_common_tail.diff
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'
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test_expect_success ' context includes end' '
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grep "^ .*End of second part" long_common_tail.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" long_common_tail.diff) -le 2
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'
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test_expect_success ' context does not include preceding empty lines' '
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test "$(first_context_line <long_common_tail.diff.diff)" != " "
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'
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check_diff changed_hello_appended 'changed function plus appended function'
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test_expect_success ' context includes begin' '
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grep "^ .*Begin of hello" changed_hello_appended.diff &&
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grep "^[+].*Begin of first part" changed_hello_appended.diff
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'
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test_expect_success ' context includes end' '
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grep "^ .*End of hello" changed_hello_appended.diff &&
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grep "^[+].*End of first part" changed_hello_appended.diff
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'
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test_expect_success ' context does not include other functions' '
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test $(grep -c "^[ +-].*Begin" changed_hello_appended.diff) -le 2
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'
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check_diff changed_hello_dummy 'changed two consecutive functions'
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test_expect_success ' context includes begin' '
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grep "^ .*Begin of hello" changed_hello_dummy.diff &&
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grep "^ .*Begin of dummy" changed_hello_dummy.diff
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'
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test_expect_success ' context includes end' '
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grep "^ .*End of hello" changed_hello_dummy.diff &&
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grep "^ .*End of dummy" changed_hello_dummy.diff
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'
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test_expect_success ' overlapping hunks are merged' '
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test $(grep -c "^@@" changed_hello_dummy.diff) -eq 1
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'
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test_done
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