bce9db6de9
Teach git to read the system and global config files for default Trace2 settings. This allows system-wide Trace2 settings to be installed and inherited to make it easier to manage a collection of systems. The original GIT_TR2* environment variables are loaded afterwards and can be used to override the system settings. Only the system and global config files are used. Repo and worktree local config files are ignored. Likewise, the "-c" command line arguments are also ignored. These limits are for performance reasons. (1) For users not using Trace2, there should be minimal overhead to detect that Trace2 is not enabled. In particular, Trace2 should not allocate lots of otherwise unused data strucutres. (2) For accurate performance measurements, Trace2 should be initialized as early in the git process as possible, and before most of the normal git process initialization (which involves discovering the .git directory and reading a hierarchy of config files). Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
175 lines
5.5 KiB
Bash
Executable File
175 lines
5.5 KiB
Bash
Executable File
#!/bin/sh
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test_description='test trace2 facility (normal target)'
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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_TR2 GIT_TR2_PERF GIT_TR2_EVENT
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sane_unset GIT_TR2_BRIEF
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sane_unset GIT_TR2_CONFIG_PARAMS
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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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# This script tests the normal target in isolation.
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#
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# Defer setting GIT_TR2 until the actual command line we want to test
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# because hidden git and test-tool commands run by the test harness
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# can contaminate our output.
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# Enable "brief" feature which turns off "<clock> <file>:<line> " prefix.
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GIT_TR2_BRIEF=1 && export GIT_TR2_BRIEF
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# Basic tests of the trace2 normal stream. Since this stream is used
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# primarily with printf-style debugging/tracing, we do limited testing
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# here.
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#
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# We do confirm the following API features:
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# [] the 'version <v>' event
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# [] the 'start <argv>' event
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# [] the 'cmd_name <name>' event
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# [] the 'exit <time> code:<code>' event
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# [] the 'atexit <time> code:<code>' event
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#
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# Fields of the form _FIELD_ are tokens that have been replaced (such
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# as the elapsed time).
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# Verb 001return
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#
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# Implicit return from cmd_<verb> function propagates <code>.
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test_expect_success 'normal stream, return code 0' '
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test_when_finished "rm trace.normal actual expect" &&
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GIT_TR2="$(pwd)/trace.normal" test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 001return 0
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:0
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atexit elapsed:_TIME_ code:0
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EOF
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test_cmp expect actual
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'
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test_expect_success 'normal stream, return code 1' '
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test_when_finished "rm trace.normal actual expect" &&
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test_must_fail env GIT_TR2="$(pwd)/trace.normal" test-tool trace2 001return 1 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 001return 1
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:1
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atexit elapsed:_TIME_ code:1
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EOF
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test_cmp expect actual
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'
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# Verb 002exit
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#
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# Explicit exit(code) from within cmd_<verb> propagates <code>.
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test_expect_success 'normal stream, exit code 0' '
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test_when_finished "rm trace.normal actual expect" &&
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GIT_TR2="$(pwd)/trace.normal" test-tool trace2 002exit 0 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 002exit 0
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:0
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atexit elapsed:_TIME_ code:0
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EOF
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test_cmp expect actual
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'
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test_expect_success 'normal stream, exit code 1' '
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test_when_finished "rm trace.normal actual expect" &&
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test_must_fail env GIT_TR2="$(pwd)/trace.normal" test-tool trace2 002exit 1 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 002exit 1
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:1
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atexit elapsed:_TIME_ code:1
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EOF
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test_cmp expect actual
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'
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# Verb 003error
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#
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# To the above, add multiple 'error <msg>' events
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test_expect_success 'normal stream, error event' '
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test_when_finished "rm trace.normal actual expect" &&
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GIT_TR2="$(pwd)/trace.normal" test-tool trace2 003error "hello world" "this is a test" &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 003error '\''hello world'\'' '\''this is a test'\''
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cmd_name trace2 (trace2)
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error hello world
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error this is a test
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exit elapsed:_TIME_ code:0
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atexit elapsed:_TIME_ code:0
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EOF
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test_cmp expect actual
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'
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sane_unset GIT_TR2_BRIEF
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# Now test without environment variables and get all Trace2 settings
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# from the global config.
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test_expect_success 'using global config, normal stream, return code 0' '
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test_when_finished "rm trace.normal actual expect" &&
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test_config_global trace2.normalBrief 1 &&
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test_config_global trace2.normalTarget "$(pwd)/trace.normal" &&
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test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 001return 0
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:0
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atexit elapsed:_TIME_ code:0
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EOF
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test_cmp expect actual
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'
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test_expect_success 'using global config with include' '
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test_when_finished "rm trace.normal actual expect real.gitconfig" &&
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test_config_global trace2.normalBrief 1 &&
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test_config_global trace2.normalTarget "$(pwd)/trace.normal" &&
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mv "$(pwd)/.gitconfig" "$(pwd)/real.gitconfig" &&
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test_config_global include.path "$(pwd)/real.gitconfig" &&
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test-tool trace2 001return 0 &&
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perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
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cat >expect <<-EOF &&
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version $V
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start _EXE_ trace2 001return 0
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cmd_name trace2 (trace2)
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exit elapsed:_TIME_ code:0
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atexit elapsed:_TIME_ code:0
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EOF
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test_cmp expect actual
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'
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test_done
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