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2026-02-21Add negative integration tests for rename syscalls (task 348)Paul Buetow
- rename-enoent: rename nonexistent file via SYS_RENAME (ENOENT) - rename-noreplace: renameat2 with RENAME_NOREPLACE on existing target (EEXIST) Both verify ior captures tracepoints on entry even when syscall fails. Amp-Thread-ID: https://ampcode.com/threads/T-019c819e-cdae-7777-9be6-992ca8a7b96b Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add negative integration tests for fcntl syscalls (task 348)Paul Buetow
Add two negative scenarios: - fcntl-invalid-fd: calls SYS_FCNTL F_GETFL on invalid fd 99999 (EBADF) - fcntl-dupfd-max: calls F_DUPFD with minfd=1<<30 beyond RLIMIT_NOFILE (EINVAL) Both verify ior captures enter_fcntl tracepoints even when syscalls fail. Amp-Thread-ID: https://ampcode.com/threads/T-019c819b-5673-75ab-8eb4-227b6cf56b38 Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add negative integration tests for dup syscallsPaul Buetow
Add three negative test scenarios for dup syscalls: - dup-invalid-fd: dup on invalid fd 99999 (EBADF) - dup2-same-fd: dup2(fd, fd) no-op case (POSIX documented behavior) - dup3-invalid-flags: dup3 with 0xBAD flags (EINVAL) All verify ior captures the tracepoint even when the syscall fails, since BPF reads arguments on syscall entry before execution. Task: 348 Amp-Thread-ID: https://ampcode.com/threads/T-019c8196-6186-7054-a4e5-640fce69e493 Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add negative integration tests for close syscallsPaul Buetow
Add three negative scenarios to verify ior captures tracepoints even when close syscalls fail: - close-invalid-fd: close an fd (99999) that was never opened (EBADF) - close-double-close: open a file, close it, close same fd again (EBADF) - close-range-empty: close_range on high fd range with no open fds Task: 348 Amp-Thread-ID: https://ampcode.com/threads/T-019c8190-c9ae-776e-b00d-476207d8c10e Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add negative integration tests for readwrite syscalls (task 348)Paul Buetow
Add four negative scenarios that verify ior captures tracepoints even when syscalls fail: - readwrite-wronly-read: read from O_WRONLY fd (EBADF) - readwrite-rdonly-write: write to O_RDONLY fd (EBADF) - readwrite-pread-invalid: pread64 with negative offset (EINVAL) - readwrite-pwrite-invalid: pwrite64 with negative offset (EINVAL) Amp-Thread-ID: https://ampcode.com/threads/T-019c818c-ec91-7673-a5ba-e9b2ba53379b Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add negative integration tests for open syscallsPaul Buetow
- openEnoent: verifies ior captures enter_openat even when syscall fails (ENOENT) - openRdonlyWrite: verifies tracing of open + failed write to read-only fd - openPidFilter: verifies child process I/O is excluded by PID filtering - AssertEventsAbsent helper with zero-value guard and 6 unit tests Task: 348 Amp-Thread-ID: https://ampcode.com/threads/T-019c8185-55f4-72f0-8ddb-3be5e4002c0d Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Fix integration test expectations to test actual syscall outcomes (task 349)Paul Buetow
- rename_test.go: Fix PathContains to use destination names (newname.txt, renameat-new.txt, renameat2-new.txt) since name_events use Newname as the path in ior output, not the source name - open_test.go: Change expected tracepoint from enter_openat to enter_creat - scenarios.go: Use raw SYS_CREAT instead of Go's syscall.Creat which wraps openat on amd64, so the creat tracepoint is actually exercised - Created task 350 for close_range path resolution bug found during review Amp-Thread-ID: https://ampcode.com/threads/T-019c8178-1c1f-7509-9ac9-bd48b970945b Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Verify harness handles workload crash/nonzero exit (task 343)Paul Buetow
Add crash scenario to ioworkload that exits non-zero, and a test verifying the harness returns a clear error mentioning 'workload', reports a valid PID, and returns no records. Amp-Thread-ID: https://ampcode.com/threads/T-019c815e-6fb6-714a-a4db-37522416ea9a Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Add io_uring integration tests and workload scenariosPaul Buetow
Implement iouring_test.go with tests for io_uring_setup, io_uring_enter, and io_uring_register tracepoints. Add corresponding workload scenarios using raw syscalls (425, 426, 427) since Go stdlib doesn't wrap io_uring on amd64. - iouring-setup: creates io_uring instance via io_uring_setup(2) - iouring-enter: creates ring, calls io_uring_enter(2) with zero ops - iouring-register: creates ring, calls io_uring_register(2) with PROBE Task #343 Amp-Thread-ID: https://ampcode.com/threads/T-019c8149-2aa6-75fb-88f3-dd6bd3a2b654 Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Implement truncate_test.go + workload scenarios for truncate, ftruncatePaul Buetow
- truncate-basic: tests SYS_TRUNCATE (path-based) via syscall.Truncate - truncate-ftruncate: tests SYS_FTRUNCATE (fd-based) via syscall.Ftruncate - Both syscall wrappers use direct SYS_* calls on amd64 (no *at wrapping) Task #343 Amp-Thread-ID: https://ampcode.com/threads/T-019c8145-7437-7218-95ff-4cb451e18655 Co-authored-by: Amp <amp@ampcode.com>
2026-02-21Implement sync_test.go + workload scenarios for fsync, fdatasync, sync, ↵Paul Buetow
sync_file_range - Add syncFdatasync, syncSync, syncSyncFileRange scenario functions - Register sync-fdatasync, sync-sync, sync-sync-file-range in scenarios map - Add sync_test.go with tests for all 4 sync-related syscalls - sync is a null_event (no path); others are fd_events - All use direct SYS_* syscalls on amd64 (no wrapper delegation) Task: #343 Amp-Thread-ID: https://ampcode.com/threads/T-019c813f-e020-7558-86ce-be6fdbd96f98 Co-authored-by: Amp <amp@ampcode.com>
2026-02-21more on integration testsPaul Buetow
2026-02-21Add integration test framework: plan, workload binary, harness scaffoldingPaul Buetow
- INTEGRATIONTESTS-PLAN.md: full design for e2e integration tests - integrationtests/cmd/ioworkload: standalone binary with 13 I/O scenarios - integrationtests/expectations.go: ExpectedEvent type and assertion helpers - integrationtests/parse.go: .ior.zst parser producing TestResult - Export IterRecord and LoadFromFile in flamegraph package - Fix TraceId -> TraceID, StringByName returns error instead of panic Amp-Thread-ID: https://ampcode.com/threads/T-019c8031-c106-757a-95a0-7a5457163ce7 Co-authored-by: Amp <amp@ampcode.com>
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