Add negative integration tests for dir syscalls (task 348)

Add three negative test scenarios for directory operations:
- dir-mkdir-eexist: SYS_MKDIR on existing directory (EEXIST)
- dir-chdir-enoent: SYS_CHDIR to nonexistent directory (ENOENT)
- dir-getdents-ebadf: SYS_GETDENTS64 with invalid fd (EBADF)

All use raw syscalls to hit exact tracepoints. Tests verify ior
captures events even when syscalls fail (entry-side capture).

Amp-Thread-ID: https://ampcode.com/threads/T-019c81ab-0d62-726e-b859-91b4898be6fe
Co-authored-by: Amp <amp@ampcode.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/integrationtests/dir_test.go b/integrationtests/dir_test.go
index 67bbe93..585f03f 100644
--- a/integrationtests/dir_test.go
+++ b/integrationtests/dir_test.go
@@ -45,3 +45,35 @@ func TestDirGetdents(t *testing.T) {
 		},
 	})
 }
+
+func TestDirMkdirEexist(t *testing.T) {
+	runScenario(t, "dir-mkdir-eexist", []ExpectedEvent{
+		{
+			PathContains: "mkdir-eexist-subdir",
+			Tracepoint:   "enter_mkdir",
+			Comm:         "ioworkload",
+			MinCount:     2,
+		},
+	})
+}
+
+func TestDirChdirEnoent(t *testing.T) {
+	runScenario(t, "dir-chdir-enoent", []ExpectedEvent{
+		{
+			PathContains: "chdir-enoent-missing",
+			Tracepoint:   "enter_chdir",
+			Comm:         "ioworkload",
+			MinCount:     1,
+		},
+	})
+}
+
+func TestDirGetdentsEbadf(t *testing.T) {
+	runScenario(t, "dir-getdents-ebadf", []ExpectedEvent{
+		{
+			Tracepoint: "enter_getdents64",
+			Comm:       "ioworkload",
+			MinCount:   1,
+		},
+	})
+}