Change the GIT_TEST_FAIL_PREREQS variable from being "non-empty?" to
being a more standard boolean variable. I recently added the variable
in dfe1a17df9 ("tests: add a special setup where prerequisites fail",
2019-05-13), having to add another "non-empty?" special-case is what
prompted me to write the "git env--helper" utility being used here.
Converting this one is a bit tricky since we use it so early and
frequently in the guts of the test code itself, so let's set a
GIT_TEST_FAIL_PREREQS_INTERNAL which can be tested with the old "test
-n" for the purposes of the shell code, and change the user-exposed
and documented GIT_TEST_FAIL_PREREQS variable to a boolean.
Signed-off-by: Ævar Arnfjörð Bjarmason <ava...@gmail.com>
---
t/README | 2 +-
t/t0000-basic.sh | 10 +++++-----
t/test-lib-functions.sh | 2 +-
t/test-lib.sh | 25 +++++++++++++++++++++----
4 files changed, 28 insertions(+), 11 deletions(-)
diff --git a/t/README b/t/README
index 072c9854d1..60d5b77bcc 100644
--- a/t/README
+++ b/t/README
@@ -334,7 +334,7 @@ that cannot be easily covered by a few specific test cases.
These
could be enabled by running the test suite with correct GIT_TEST_
environment set.
-GIT_TEST_FAIL_PREREQS<non-empty?> fails all prerequisites. This is
+GIT_TEST_FAIL_PREREQS=<boolean> fails all prerequisites. This is
useful for discovering issues with the tests where say a later test
implicitly depends on an optional earlier test.
diff --git a/t/t0000-basic.sh b/t/t0000-basic.sh
index 31de7e90f3..e89438e619 100755
--- a/t/t0000-basic.sh
+++ b/t/t0000-basic.sh
@@ -726,7 +726,7 @@ donthaveit=yes
test_expect_success DONTHAVEIT 'unmet prerequisite causes test to be skipped' '
donthaveit=no
'
-if test -z "$GIT_TEST_FAIL_PREREQS" -a $haveit$donthaveit != yesyes
+if test -z "$GIT_TEST_FAIL_PREREQS_INTERNAL" -a $haveit$donthaveit != yesyes
then
say "bug in test framework: prerequisite tags do not work reliably"
exit 1
@@ -747,7 +747,7 @@ donthaveiteither=yes
test_expect_success DONTHAVEIT,HAVEIT 'unmet prerequisites causes test to be
skipped' '
donthaveiteither=no
'
-if test -z "$GIT_TEST_FAIL_PREREQS" -a $haveit$donthaveit$donthaveiteither !=
yesyesyes
+if test -z "$GIT_TEST_FAIL_PREREQS_INTERNAL" -a
$haveit$donthaveit$donthaveiteither != yesyesyes
then
say "bug in test framework: multiple prerequisite tags do not work
reliably"
exit 1
@@ -763,7 +763,7 @@ test_expect_success !LAZY_TRUE 'missing lazy prereqs skip
tests' '
donthavetrue=no
'
-if test -z "$GIT_TEST_FAIL_PREREQS" -a "$havetrue$donthavetrue" != yesyes
+if test -z "$GIT_TEST_FAIL_PREREQS_INTERNAL" -a "$havetrue$donthavetrue" !=
yesyes
then
say 'bug in test framework: lazy prerequisites do not work'
exit 1
@@ -779,7 +779,7 @@ test_expect_success LAZY_FALSE 'missing negative lazy
prereqs will skip' '
havefalse=no
'
-if test -z "$GIT_TEST_FAIL_PREREQS" -a "$nothavefalse$havefalse" != yesyes
+if test -z "$GIT_TEST_FAIL_PREREQS_INTERNAL" -a "$nothavefalse$havefalse" !=
yesyes
then
say 'bug in test framework: negative lazy prerequisites do not work'
exit 1
@@ -790,7 +790,7 @@ test_expect_success 'tests clean up after themselves' '
test_when_finished clean=yes
'
-if test -z "$GIT_TEST_FAIL_PREREQS" -a $clean != yes
+if test -z "$GIT_TEST_FAIL_PREREQS_INTERNAL" -a $clean != yes
then
say "bug in test framework: basic cleanup command does not work
reliably"
exit 1
diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 527508c350..3fba71c358 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -309,7 +309,7 @@ test_unset_prereq () {
}
test_set_prereq () {
- if test -n "$GIT_TEST_FAIL_PREREQS"
+ if test -n "$GIT_TEST_FAIL_PREREQS_INTERNAL"
then
case "$1" in
# The "!" case is handled below with
diff --git a/t/test-lib.sh b/t/test-lib.sh
index bdd5017d24..552461435e 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1389,6 +1389,27 @@ yes () {
done
}
+# The GIT_TEST_FAIL_PREREQS code hooks into test_set_prereq(), and
+# thus needs to be set up really early, and set an internal variable
+# for convenience so the hot test_set_prereq() codepath doesn't need
+# to call "git env--helper". Only do that work if needed by seeing if
+# GIT_TEST_FAIL_PREREQS is set at all.
+GIT_TEST_FAIL_PREREQS_INTERNAL=
+if test -n "$GIT_TEST_FAIL_PREREQS"
+then
+ if git env--helper --mode-bool --variable=GIT_TEST_FAIL_PREREQS \
+ --default=0 --exit-code --quiet
+ then
+ GIT_TEST_FAIL_PREREQS_INTERNAL=true
+ test_set_prereq FAIL_PREREQS
+ fi
+else
+ test_lazy_prereq FAIL_PREREQS '
+ git env--helper --mode-bool --variable=GIT_TEST_FAIL_PREREQS \
+ --default=0 --exit-code --quiet
+ '
+fi
+
# Fix some commands on Windows
uname_s=$(uname -s)
case $uname_s in
@@ -1611,7 +1632,3 @@ test_lazy_prereq SHA1 '
test_lazy_prereq REBASE_P '
test -z "$GIT_TEST_SKIP_REBASE_P"
'
-
-test_lazy_prereq FAIL_PREREQS '
- test -n "$GIT_TEST_FAIL_PREREQS"
-'
--
2.22.0.rc1.257.g3120a18244
