[PATCH v2 06/10] t7006: add tests for how git tag paginates

["Martin Ågren" <martin.agren@gmail.com>]

Using, e.g., `git -c pager.tag tag -a new-tag` results in errors such as
"Vim: Warning: Output is not to a terminal" and a garbled terminal. A
user who makes use of `git tag -a` and `git tag -l` will probably choose
not to configure `pager.tag` or to set it to "no", so that `git tag -a`
will actually work, at the cost of not getting the pager with `git tag
-l`.

Since we're about to change how `git tag` respects `pager.tag`, add tests
around this, including how the configuration is ignored if --no-pager or
--paginate are used.

Construct tests with a few different subcommands. First, use -l. Second,
use "no arguments" and --contains, since those imply -l. (There are
more arguments which imply -l, but using these two should be enough.)
Third, use -a as a representative for "not -l".

Make one of the tests demonstrate the behavior mentioned above, where
`git tag -a` respects `pager.tag`. Actually, the tests use `git tag -am`
so no editor is launched, but that is irrelevant, since we just want to
see whether the pager is used or not.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
---
 t/t7006-pager.sh | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
index 20b4d83c2..e7430bc93 100755
--- a/t/t7006-pager.sh
+++ b/t/t7006-pager.sh
@@ -134,6 +134,74 @@ test_expect_success TTY 'configuration can enable pager (from subdir)' '
 	}
 '
 
+test_expect_success TTY 'git tag -l defaults to not paging' '
+	rm -f paginated.out &&
+	test_terminal git tag -l &&
+	! test -e paginated.out
+'
+
+test_expect_success TTY 'git tag -l respects pager.tag' '
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag tag -l &&
+	test -e paginated.out
+'
+
+test_expect_success TTY 'git tag -l respects --no-pager' '
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag --no-pager tag -l &&
+	! test -e paginated.out
+'
+
+test_expect_success TTY 'git tag with no args defaults to not paging' '
+	# no args implies -l so this should page like -l
+	rm -f paginated.out &&
+	test_terminal git tag &&
+	! test -e paginated.out
+'
+
+test_expect_success TTY 'git tag with no args respects pager.tag' '
+	# no args implies -l so this should page like -l
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag tag &&
+	test -e paginated.out
+'
+
+test_expect_success TTY 'git tag --contains defaults to not paging' '
+	# --contains implies -l so this should page like -l
+	rm -f paginated.out &&
+	test_terminal git tag --contains &&
+	! test -e paginated.out
+'
+
+test_expect_success TTY 'git tag --contains respects pager.tag' '
+	# --contains implies -l so this should page like -l
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag tag --contains &&
+	test -e paginated.out
+'
+
+test_expect_success TTY 'git tag -a defaults to not paging' '
+	test_when_finished "git tag -d newtag" &&
+	rm -f paginated.out &&
+	test_terminal git tag -am message newtag &&
+	! test -e paginated.out
+'
+
+test_expect_success TTY 'git tag -a respects pager.tag' '
+	test_when_finished "git tag -d newtag" &&
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag tag -am message newtag &&
+	test -e paginated.out
+'
+
+test_expect_success TTY 'git tag -a respects --paginate' '
+	test_when_finished "git tag -d newtag" &&
+	rm -f paginated.out &&
+	test_terminal git -c pager.tag=false --paginate \
+		tag -am message newtag &&
+	test -e paginated.out
+'
+
 # A colored commit log will begin with an appropriate ANSI escape
 # for the first color; the text "commit" comes later.
 colorful() {
-- 
2.14.0.rc0