[PATCH v20 20/21] Add reftable testing infrastructure

["Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>

* Add GIT_TEST_REFTABLE environment var to control default ref storage

* Add test_prerequisite REFTABLE.

* Skip some tests that are incompatible:

  * t3210-pack-refs.sh - does not apply
  * t1450-fsck.sh - manipulates .git/ directly to create invalid state

Major test failures:

 * t1400-update-ref.sh - Reads from .git/{refs,logs} directly
 * t1404-update-ref-errors.sh - Manipulates .git/refs/ directly
 * t1405 - inspecs .git/ directly.

Signed-off-by: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>
---
 t/t1409-avoid-packing-refs.sh | 6 ++++++
 t/t1450-fsck.sh               | 6 ++++++
 t/t3210-pack-refs.sh          | 6 ++++++
 t/test-lib.sh                 | 5 +++++
 4 files changed, 23 insertions(+)

diff --git a/t/t1409-avoid-packing-refs.sh b/t/t1409-avoid-packing-refs.sh
index be12fb6350..c6f7832556 100755
--- a/t/t1409-avoid-packing-refs.sh
+++ b/t/t1409-avoid-packing-refs.sh
@@ -4,6 +4,12 @@ test_description='avoid rewriting packed-refs unnecessarily'
 
 . ./test-lib.sh
 
+if test_have_prereq REFTABLE
+then
+  skip_all='skipping pack-refs tests; incompatible with reftable'
+  test_done
+fi
+
 # Add an identifying mark to the packed-refs file header line. This
 # shouldn't upset readers, and it should be omitted if the file is
 # ever rewritten.
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index 344a2aad82..0966920324 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh
@@ -8,6 +8,12 @@ test_description='git fsck random collection of tests
 
 . ./test-lib.sh
 
+if test_have_prereq REFTABLE
+then
+  skip_all='skipping tests; incompatible with reftable'
+  test_done
+fi
+
 test_expect_success setup '
 	test_oid_init &&
 	git config gc.auto 0 &&
diff --git a/t/t3210-pack-refs.sh b/t/t3210-pack-refs.sh
index f41b2afb99..edaef2c175 100755
--- a/t/t3210-pack-refs.sh
+++ b/t/t3210-pack-refs.sh
@@ -11,6 +11,12 @@ semantic is still the same.
 '
 . ./test-lib.sh
 
+if test_have_prereq REFTABLE
+then
+  skip_all='skipping pack-refs tests; incompatible with reftable'
+  test_done
+fi
+
 test_expect_success 'enable reflogs' '
 	git config core.logallrefupdates true
 '
diff --git a/t/test-lib.sh b/t/test-lib.sh
index ba224c86f5..7a341c7bc5 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1508,6 +1508,11 @@ parisc* | hppa*)
 	;;
 esac
 
+if test -n "$GIT_TEST_REFTABLE"
+then
+  test_set_prereq REFTABLE
+fi
+
 ( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
 test -z "$NO_PERL" && test_set_prereq PERL
 test -z "$NO_PTHREADS" && test_set_prereq PTHREADS
-- 
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