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https://github.com/git/git.git
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3d3adaad91
Via trace2, Git can already log interesting config parameters (see the trace2_cmd_list_config() function). However, this can grant an incomplete picture because many config parameters also allow overrides via environment variables. To allow for more complete logs, we add a new trace2_cmd_list_env_vars() function and supporting implementation, modeled after the pre-existing config param logging implementation. Signed-off-by: Josh Steadmon <steadmon@google.com> Acked-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
325 lines
8.1 KiB
Bash
Executable File
325 lines
8.1 KiB
Bash
Executable File
#!/bin/sh
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test_description='test trace2 facility'
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. ./test-lib.sh
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# Turn off any inherited trace2 settings for this test.
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sane_unset GIT_TRACE2 GIT_TRACE2_PERF GIT_TRACE2_EVENT
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sane_unset GIT_TRACE2_BARE
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sane_unset GIT_TRACE2_CONFIG_PARAMS
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perl -MJSON::PP -e 0 >/dev/null 2>&1 && test_set_prereq JSON_PP
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# Add t/helper directory to PATH so that we can use a relative
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# path to run nested instances of test-tool.exe (see 004child).
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# This helps with HEREDOC comparisons later.
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TTDIR="$GIT_BUILD_DIR/t/helper/" && export TTDIR
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PATH="$TTDIR:$PATH" && export PATH
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# Warning: use of 'test_cmp' may run test-tool.exe and/or git.exe
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# Warning: to do the actual diff/comparison, so the HEREDOCs here
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# Warning: only cover our actual calls to test-tool and/or git.
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# Warning: So you may see extra lines in artifact files when
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# Warning: interactively debugging.
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V=$(git version | sed -e 's/^git version //') && export V
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# There are multiple trace2 targets: normal, perf, and event.
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# Trace2 events will/can be written to each active target (subject
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# to whatever filtering that target decides to do).
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# Test each target independently.
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#
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# Defer setting GIT_TRACE2_PERF until the actual command we want to
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# test because hidden git and test-tool commands in the test
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# harness can contaminate our output.
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# We don't bother repeating the 001return and 002exit tests, since they
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# have coverage in the normal and perf targets.
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# Verb 003error
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#
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# To the above, add multiple 'error <msg>' events
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test_expect_success JSON_PP 'event stream, error event' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 003error "hello world" "this is a test" &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "003error",
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| "hello world",
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| "this is a test"
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| ],
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| "errors":[
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| "%s",
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| "%s"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Verb 004child
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#
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# Test nested spawning of child processes.
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#
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# Conceptually, this looks like:
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# P1: TT trace2 004child
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# P2: |--- TT trace2 004child
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# P3: |--- TT trace2 001return 0
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test_expect_success JSON_PP 'event stream, return code 0' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 004child test-tool trace2 004child test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child":{
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| "0":{
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| "child_argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child_class":"?",
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| "child_code":0,
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| "use_shell":0
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| },
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| "_SID0_/_SID1_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "004child",
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| "test-tool",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child":{
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| "0":{
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| "child_argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "child_class":"?",
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| "child_code":0,
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| "use_shell":0
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2/trace2",
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| "name":"trace2",
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| "version":"$V"
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| },
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| "_SID0_/_SID1_/_SID2_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2/trace2/trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Test listing of all "interesting" config settings.
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test_expect_success JSON_PP 'event stream, list config' '
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test_when_finished "rm trace.event actual expect" &&
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git config --local t0212.abc 1 &&
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git config --local t0212.def "hello world" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" GIT_TRACE2_CONFIG_PARAMS="t0212.*" test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "params":[
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| {
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| "param":"t0212.abc",
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| "value":"1"
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| },
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| {
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| "param":"t0212.def",
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| "value":"hello world"
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| }
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| ],
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Test listing of all "interesting" environment variables.
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test_expect_success JSON_PP 'event stream, list env vars' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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GIT_TRACE2_ENV_VARS="A_VAR,OTHER_VAR,MISSING" \
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A_VAR=1 OTHER_VAR="hello world" test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "001return",
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| "0"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "params":[
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| {
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| "param":"A_VAR",
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| "value":"1"
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| },
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| {
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| "param":"OTHER_VAR",
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| "value":"hello world"
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| }
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| ],
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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test_expect_success JSON_PP 'basic trace2_data' '
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test_when_finished "rm trace.event actual expect" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool trace2 006data test_category k1 v1 test_category k2 v2 &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "006data",
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| "test_category",
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| "k1",
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| "v1",
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| "test_category",
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| "k2",
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| "v2"
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| ],
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| "data":{
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| "test_category":{
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| "k1":"v1",
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| "k2":"v2"
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| }
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| },
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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# Now test without environment variables and get all Trace2 settings
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# from the global config.
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test_expect_success JSON_PP 'using global config, event stream, error event' '
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test_when_finished "rm trace.event actual expect" &&
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test_config_global trace2.eventTarget "$(pwd)/trace.event" &&
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test-tool trace2 003error "hello world" "this is a test" &&
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perl "$TEST_DIRECTORY/t0212/parse_events.perl" <trace.event >actual &&
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sed -e "s/^|//" >expect <<-EOF &&
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|VAR1 = {
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| "_SID0_":{
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| "argv":[
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| "_EXE_",
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| "trace2",
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| "003error",
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| "hello world",
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| "this is a test"
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| ],
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| "errors":[
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| "%s",
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| "%s"
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| ],
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| "exit_code":0,
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| "hierarchy":"trace2",
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| "name":"trace2",
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| "version":"$V"
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| }
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|};
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EOF
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test_cmp expect actual
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'
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test_expect_success 'discard traces when there are too many files' '
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mkdir trace_target_dir &&
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test_when_finished "rm -r trace_target_dir" &&
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(
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GIT_TRACE2_MAX_FILES=5 &&
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export GIT_TRACE2_MAX_FILES &&
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cd trace_target_dir &&
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test_seq $GIT_TRACE2_MAX_FILES >../expected_filenames.txt &&
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xargs touch <../expected_filenames.txt &&
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cd .. &&
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GIT_TRACE2_EVENT="$(pwd)/trace_target_dir" test-tool trace2 001return 0
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) &&
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echo git-trace2-discard >>expected_filenames.txt &&
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ls trace_target_dir >ls_output.txt &&
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test_cmp expected_filenames.txt ls_output.txt &&
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head -n1 trace_target_dir/git-trace2-discard | grep \"event\":\"version\" &&
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head -n2 trace_target_dir/git-trace2-discard | tail -n1 | grep \"event\":\"too_many_files\"
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'
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test_done
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