[PATCH 1/7] test: turn EXPENSIVE into a lazy prerequisite

[Junio C Hamano <gitster@pobox.com>]

Two test scripts (t0021 and t5551) had copy & paste code to set
EXPENSIVE prerequisite.  Use the test_lazy_prereq helper to define
them in the common t/test-lib.sh.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t0021-conversion.sh | 2 --
 t/t5551-http-fetch.sh | 2 --
 t/test-lib.sh         | 4 ++++
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index b92e6cb..f890c54 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -190,8 +190,6 @@ test_expect_success 'required filter clean failure' '
 	test_must_fail git add test.fc
 '
 
-test -n "$GIT_TEST_LONG" && test_set_prereq EXPENSIVE
-
 test_expect_success EXPENSIVE 'filter large file' '
 	git config filter.largefile.smudge cat &&
 	git config filter.largefile.clean cat &&
diff --git a/t/t5551-http-fetch.sh b/t/t5551-http-fetch.sh
index afb439e..d697393 100755
--- a/t/t5551-http-fetch.sh
+++ b/t/t5551-http-fetch.sh
@@ -214,8 +214,6 @@ test_expect_success 'cookies stored in http.cookiefile when http.savecookies set
 	test_cmp expect_cookies.txt cookies_tail.txt
 '
 
-test -n "$GIT_TEST_LONG" && test_set_prereq EXPENSIVE
-
 test_expect_success EXPENSIVE 'create 50,000 tags in the repo' '
 	(
 	cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
diff --git a/t/test-lib.sh b/t/test-lib.sh
index b25249e..d70d05e 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -855,6 +855,10 @@ test_lazy_prereq AUTOIDENT '
 	git var GIT_AUTHOR_IDENT
 '
 
+test_lazy_prereq EXPENSIVE '
+	test -n "$GIT_TEST_LONG"
+'
+
 # When the tests are run as root, permission tests will report that
 # things are writable when they shouldn't be.
 test -w / || test_set_prereq SANITY
-- 
2.0.0-435-g307a092