[PATCH 01/11] test-lib: catch misspelt 'test_expect_successo'

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

In order to catch mistakes like misspelling "test_expect_success",
we would like to eventually be able to run our test suite with the
"-e" option on.

All tests dot-source "test-lib.sh" as the first thing to do.
Starting the script with "set -e" immediately reveals one place in
the test framework itself that is not clean.

The test framework runs "$GIT_BINARY" without any argument. We
expect it to exit with status 1 (i.e., "git<RETURN>" that spits out
the list of common commands) as a sign that we have an instance of
Git that we want to test.  We cannot quite say

    git
    if test $? != 1; then you have not built git; fi

as the first invocation that exits non-zero is caught with "set -e".

Work this around by rewriting the construct like so:

    status=0; git || status=$?
    if test $status != 1; then you have not built git; fi

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/test-lib.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 70fd3e9baf..a2aa97fba3 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -17,6 +17,9 @@
 
 # Test the binaries we have just built.  The tests are kept in
 # t/ subdirectory and are run in 'trash directory' subdirectory.
+
+set -e
+
 if test -z "$TEST_DIRECTORY"
 then
 	# ensure that TEST_DIRECTORY is an absolute path so that it
@@ -143,8 +146,8 @@ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 ################################################################
 # It appears that people try to run tests without building...
 GIT_BINARY="${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X"
-"$GIT_BINARY" >/dev/null
-if test $? != 1
+status=0 && "$GIT_BINARY" >/dev/null || status=$?
+if test $status != 1
 then
 	if test -n "$GIT_TEST_INSTALLED"
 	then
-- 
2.53.0-886-g529cbd14ff