From d3621de789ab57739f48b065751089d828b50240 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Tue, 31 May 2016 22:00:38 +0200 Subject: t4051: rewrite, add more tests Remove the tests that checked against a fixed result and replace them with more focused checks of desired properties of the created diffs. That way we get more detailed and meaningful diagnostics. Store test file contents in files in a subdirectory in order to avoid cluttering the test script with them. Use tagged commits to store the changes to test diff -W against instead of using changes to the worktree. Use the worktree instead to try and apply the generated patch in order to validate it. Document unwanted features: trailing empty lines, too much context for appended functions, insufficient context at the end with -U0. Helped-by: Junio C Hamano Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- t/t4051-diff-function-context.sh | 216 +++++++++++++++++++++++++-------------- t/t4051/appended1.c | 15 +++ t/t4051/appended2.c | 35 +++++++ t/t4051/dummy.c | 7 ++ t/t4051/hello.c | 21 ++++ t/t4051/includes.c | 20 ++++ 6 files changed, 240 insertions(+), 74 deletions(-) create mode 100644 t/t4051/appended1.c create mode 100644 t/t4051/appended2.c create mode 100644 t/t4051/dummy.c create mode 100644 t/t4051/hello.c create mode 100644 t/t4051/includes.c diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh index 001d678e09..ca017255ba 100755 --- a/t/t4051-diff-function-context.sh +++ b/t/t4051-diff-function-context.sh @@ -3,90 +3,158 @@ test_description='diff function context' . ./test-lib.sh -. "$TEST_DIRECTORY"/diff-lib.sh +dir="$TEST_DIRECTORY/t4051" -cat <<\EOF >hello.c -#include - -static int a(void) -{ - /* - * Dummy. - */ +commit_and_tag () { + tag=$1 && + shift && + git add "$@" && + test_tick && + git commit -m "$tag" && + git tag "$tag" } -static int hello_world(void) -{ - /* Classic. */ - printf("Hello world.\n"); - - /* Success! */ - return 0; +first_context_line () { + awk ' + found {print; exit} + /^@@/ {found = 1} + ' } -static int b(void) -{ - /* - * Dummy, too. - */ + +last_context_line () { + sed -ne \$p } -int main(int argc, char **argv) -{ - a(); - b(); - return hello_world(); +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 "$name" + ' } -EOF test_expect_success 'setup' ' - git add hello.c && - test_tick && - git commit -m initial && - - grep -v Classic hello.c.new && - mv hello.c.new hello.c -' - -cat <<\EOF >expected -diff --git a/hello.c b/hello.c ---- a/hello.c -+++ b/hello.c -@@ -10,8 +10,7 @@ static int a(void) - static int hello_world(void) - { -- /* Classic. */ - printf("Hello world.\n"); - - /* Success! */ - return 0; - } -EOF - -test_expect_success 'diff -U0 -W' ' - git diff -U0 -W >actual && - compare_diff_patch actual expected -' - -cat <<\EOF >expected -diff --git a/hello.c b/hello.c ---- a/hello.c -+++ b/hello.c -@@ -9,9 +9,8 @@ static int a(void) - - static int hello_world(void) - { -- /* Classic. */ - printf("Hello world.\n"); - - /* Success! */ - return 0; - } -EOF - -test_expect_success 'diff -W' ' - git diff -W >actual && - compare_diff_patch actual expected + cat "$dir/includes.c" "$dir/dummy.c" "$dir/dummy.c" "$dir/hello.c" \ + "$dir/dummy.c" "$dir/dummy.c" >file.c && + commit_and_tag initial file.c && + + grep -v "delete me from hello" file.c.new && + mv file.c.new file.c && + commit_and_tag changed_hello file.c && + + grep -v "delete me from includes" file.c.new && + mv file.c.new file.c && + commit_and_tag changed_includes file.c && + + cat "$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.new && + mv file.c.new file.c && + commit_and_tag long_common_tail file.c +' + +check_diff changed_hello 'changed function' + +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 = 0; + i--) { + printf("%d bottles of beer on the wall\n", i); + } + + printf("End of first part\n"); diff --git a/t/t4051/appended2.c b/t/t4051/appended2.c new file mode 100644 index 0000000000..e651f7147b --- /dev/null +++ b/t/t4051/appended2.c @@ -0,0 +1,35 @@ + printf("Begin of second part\n"); + + /* + * Lorem ipsum dolor sit amet, consectetuer sadipscing elitr, + * sed diam nonumy eirmod tempor invidunt ut labore et dolore + * magna aliquyam erat, sed diam voluptua. At vero eos et + * accusam et justo duo dolores et ea rebum. Stet clita kasd + * gubergren, no sea takimata sanctus est Lorem ipsum dolor + * sit amet. + * + * Lorem ipsum dolor sit amet, consectetuer sadipscing elitr, + * sed diam nonumy eirmod tempor invidunt ut labore et dolore + * magna aliquyam erat, sed diam voluptua. At vero eos et + * accusam et justo duo dolores et ea rebum. Stet clita kasd + * gubergren, no sea takimata sanctus est Lorem ipsum dolor + * sit amet. + * + * Lorem ipsum dolor sit amet, consectetuer sadipscing elitr, + * sed diam nonumy eirmod tempor invidunt ut labore et dolore + * magna aliquyam erat, sed diam voluptua. At vero eos et + * accusam et justo duo dolores et ea rebum. Stet clita kasd + * gubergren, no sea takimata sanctus est Lorem ipsum dolor + * sit amet. + * + * Lorem ipsum dolor sit amet, consectetuer sadipscing elitr, + * sed diam nonumy eirmod tempor invidunt ut labore et dolore + * magna aliquyam erat, sed diam voluptua. At vero eos et + * accusam et justo duo dolores et ea rebum. Stet clita kasd + * gubergren, no sea takimata sanctus est Lorem ipsum dolor + * sit amet. + * + */ + + return 0; +} // End of second part diff --git a/t/t4051/dummy.c b/t/t4051/dummy.c new file mode 100644 index 0000000000..a43016e870 --- /dev/null +++ b/t/t4051/dummy.c @@ -0,0 +1,7 @@ + +static int dummy(void) // Begin of dummy +{ + int rc = 0; + + return rc; +} // End of dummy diff --git a/t/t4051/hello.c b/t/t4051/hello.c new file mode 100644 index 0000000000..63b1a1e4ef --- /dev/null +++ b/t/t4051/hello.c @@ -0,0 +1,21 @@ + +static void hello(void) // Begin of hello +{ + /* + * Classic. + */ + putchar('H'); + putchar('e'); + putchar('l'); + putchar('l'); + putchar('o'); + putchar(' '); + /* delete me from hello */ + putchar('w'); + putchar('o'); + putchar('r'); + putchar('l'); + putchar('d'); + putchar('.'); + putchar('\n'); +} // End of hello diff --git a/t/t4051/includes.c b/t/t4051/includes.c new file mode 100644 index 0000000000..efc68f8bf6 --- /dev/null +++ b/t/t4051/includes.c @@ -0,0 +1,20 @@ +#include +#include +#include +#include +#include +#include +#include +#include +/* delete me from includes */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -- cgit v1.2.3