Add negative integration tests for stat syscalls (task 348)

Add three negative test scenarios for stat-family syscalls:
- stat-enoent: SYS_STAT on nonexistent file (ENOENT)
- stat-access-enoent: SYS_ACCESS on nonexistent file (ENOENT, since
  tests run as root and EACCES is bypassed)
- stat-fstat-ebadf: SYS_FSTAT on invalid fd 99999 (EBADF)

Each scenario verifies that ior captures the tracepoint on syscall
entry even when the syscall fails.

Amp-Thread-ID: https://ampcode.com/threads/T-019c81af-d01d-75db-8a92-37951fb1503c
Co-authored-by: Amp <amp@ampcode.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/integrationtests/stat_test.go b/integrationtests/stat_test.go
index e38171a..400e61a 100644
--- a/integrationtests/stat_test.go
+++ b/integrationtests/stat_test.go
@@ -78,3 +78,35 @@ func TestStatFaccessat(t *testing.T) {
 		},
 	})
 }
+
+func TestStatEnoent(t *testing.T) {
+	runScenario(t, "stat-enoent", []ExpectedEvent{
+		{
+			PathContains: "stat-enoent-missing.txt",
+			Tracepoint:   "enter_newstat",
+			Comm:         "ioworkload",
+			MinCount:     1,
+		},
+	})
+}
+
+func TestStatAccessEnoent(t *testing.T) {
+	runScenario(t, "stat-access-enoent", []ExpectedEvent{
+		{
+			PathContains: "access-enoent-missing.txt",
+			Tracepoint:   "enter_access",
+			Comm:         "ioworkload",
+			MinCount:     1,
+		},
+	})
+}
+
+func TestStatFstatEbadf(t *testing.T) {
+	runScenario(t, "stat-fstat-ebadf", []ExpectedEvent{
+		{
+			Tracepoint: "enter_newfstat",
+			Comm:       "ioworkload",
+			MinCount:   1,
+		},
+	})
+}