From 60b6e2200deff208a9757721544a3a311034804f Mon Sep 17 00:00:00 2001 From: Jonathan Nieder Date: Fri, 19 Feb 2010 01:18:58 -0600 Subject: [PATCH] tests: Add tests for automatic use of pager MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Git’s automatic pagination support has some subtleties. Add some tests to make sure we don’t break: - when git will use a pager by default; - the effect of the --paginate and --no-pager options; - the effect of pagination on use of color; - how the choice of pager is configured. This does not yet test: - use of pager by scripted commands (git svn and git am); - effect of the pager.* configuration variables; - setting of the LESS variable. Some features involve checking whether stdout is a terminal, so many of these tests are skipped unless output is passed through to the terminal (i.e., unless $GIT_TEST_OPTS includes --verbose). The immediate purpose for these tests was to avoid making things worse after the breakage from my jn/editor-pager series (see commit 376f39, 2009-11-20). Thanks to Sebastian Celis for the report. Helped-by: Jeff King Signed-off-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- t/t7006-pager.sh | 163 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100755 t/t7006-pager.sh diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh new file mode 100755 index 000000000..4f52ea573 --- /dev/null +++ b/t/t7006-pager.sh @@ -0,0 +1,163 @@ +#!/bin/sh + +test_description='Test automatic use of a pager.' + +. ./test-lib.sh + +rm -f stdout_is_tty +test_expect_success 'is stdout a terminal?' ' + if test -t 1 + then + : > stdout_is_tty + fi +' + +if test -e stdout_is_tty +then + test_set_prereq TTY +else + say stdout is not a terminal, so skipping some tests. +fi + +unset GIT_PAGER GIT_PAGER_IN_USE +git config --unset core.pager +PAGER='cat > paginated.out' +export PAGER + +test_expect_success 'setup' ' + test_commit initial +' + +rm -f paginated.out +test_expect_success TTY 'some commands use a pager' ' + git log && + test -e paginated.out +' + +rm -f paginated.out +test_expect_success TTY 'some commands do not use a pager' ' + git rev-list HEAD && + ! test -e paginated.out +' + +rm -f paginated.out +test_expect_success 'no pager when stdout is a pipe' ' + git log | cat && + ! test -e paginated.out +' + +rm -f paginated.out +test_expect_success 'no pager when stdout is a regular file' ' + git log > file && + ! test -e paginated.out +' + +rm -f paginated.out +test_expect_success TTY 'git --paginate rev-list uses a pager' ' + git --paginate rev-list HEAD && + test -e paginated.out +' + +rm -f file paginated.out +test_expect_success 'no pager even with --paginate when stdout is a pipe' ' + git --paginate log | cat && + ! test -e paginated.out +' + +rm -f paginated.out +test_expect_success TTY 'no pager with --no-pager' ' + git --no-pager log && + ! 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() { + read firstline < $1 + ! expr "$firstline" : "^[a-zA-Z]" >/dev/null +} + +rm -f colorful.log colorless.log +test_expect_success 'tests can detect color' ' + git log --no-color > colorless.log && + git log --color > colorful.log && + ! colorful colorless.log && + colorful colorful.log +' + +rm -f colorless.log +git config color.ui auto +test_expect_success 'no color when stdout is a regular file' ' + git log > colorless.log && + ! colorful colorless.log +' + +rm -f paginated.out +git config color.ui auto +test_expect_success TTY 'color when writing to a pager' ' + TERM=vt100 git log && + colorful paginated.out +' + +rm -f colorful.log +git config color.ui auto +test_expect_success 'color when writing to a file intended for a pager' ' + TERM=vt100 GIT_PAGER_IN_USE=true git log > colorful.log && + colorful colorful.log +' + +unset PAGER GIT_PAGER +git config --unset core.pager +test_expect_success 'determine default pager' ' + less=$(git var GIT_PAGER) && + test -n "$less" +' + +if expr "$less" : '^[a-z]*$' > /dev/null && test_have_prereq TTY +then + test_set_prereq SIMPLEPAGER +fi + +unset PAGER GIT_PAGER +git config --unset core.pager +rm -f default_pager_used +test_expect_success SIMPLEPAGER 'default pager is used by default' ' + cat > $less <<-EOF && + #!$SHELL_PATH + : > default_pager_used + EOF + chmod +x $less && + PATH=.:$PATH git log && + test -e default_pager_used +' + +unset GIT_PAGER +git config --unset core.pager +rm -f PAGER_used +test_expect_success TTY 'PAGER overrides default pager' ' + PAGER=": > PAGER_used" && + export PAGER && + git log && + test -e PAGER_used +' + +unset GIT_PAGER +rm -f core.pager_used +test_expect_success TTY 'core.pager overrides PAGER' ' + PAGER=: && + export PAGER && + git config core.pager ": > core.pager_used" && + git log && + test -e core.pager_used +' + +rm -f GIT_PAGER_used +test_expect_success TTY 'GIT_PAGER overrides core.pager' ' + git config core.pager : && + GIT_PAGER=": > GIT_PAGER_used" && + export GIT_PAGER && + git log && + test -e GIT_PAGER_used +' + +test_done -- 2.30.2