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tests: skip test_eval_ in internal chain-lint
To check for broken &&-chains, we run "fail_117 && $1" as a test snippet, and check the exit code. We use test_eval_ to do so, because that's the way we run the actual test. But we don't need any of its niceties, like "set -x" tracing. In fact, they hinder us, because we have to explicitly disable them. So let's skip that and use "eval" more directly, which is simpler. I had hoped it would also be faster, but it doesn't seem to produce a measurable improvement (probably because it's just running internal shell commands, with no subshells or forks). Note that there is one gotcha: even though we don't intend to run any of the commands if the &&-chain is intact, an error like this: test_expect_success 'broken' ' # this next line breaks the &&-chain true # and then this one is executed even by the linter return 1 ' means we'll "return 1" from the eval, and thus from test_run_(). We actually do notice this in test_expect_success, but only by saying "hey, this test didn't say it was OK, so it must have failed", which is not right (it should say "broken &&-chain"). We can handle this by calling test_eval_inner_() instead, which is our trick for wrapping "return" in a test snippet. But to do that, we have to push the trace code out of that inner function and into test_eval_(). This is arguably where it belonged in the first place, but it never mattered because the "inner_" function had only one caller. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -1041,10 +1041,7 @@ want_trace () {
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# (and we want to make sure we run any cleanup like
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# "set +x").
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test_eval_inner_ () {
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# Do not add anything extra (including LF) after '$*'
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eval "
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want_trace && trace_level_=$(($trace_level_+1)) && set -x
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$*"
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eval "$*"
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}
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test_eval_ () {
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@ -1069,7 +1066,10 @@ test_eval_ () {
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# be _inside_ the block to avoid polluting the "set -x" output
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#
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test_eval_inner_ "$@" </dev/null >&3 2>&4
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# Do not add anything extra (including LF) after '$*'
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test_eval_inner_ </dev/null >&3 2>&4 "
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want_trace && trace_level_=$(($trace_level_+1)) && set -x
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$*"
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{
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test_eval_ret_=$?
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if want_trace
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@ -1095,18 +1095,13 @@ test_run_ () {
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expecting_failure=$2
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if test "${GIT_TEST_CHAIN_LINT:-1}" != 0; then
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# turn off tracing for this test-eval, as it simply creates
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# confusing noise in the "-x" output
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trace_tmp=$trace
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trace=
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# 117 is magic because it is unlikely to match the exit
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# code of other programs
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test_eval_ "fail_117 && $1"
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test_eval_inner_ "fail_117 && $1" </dev/null >&3 2>&4
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if test $? != 117
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then
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BUG "broken &&-chain: $1"
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fi
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trace=$trace_tmp
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fi
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setup_malloc_check
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