internal: add context to BPF setup failures (task 416)

1 files changed, 27 insertions, 0 deletions

diff --git a/internal/ior_setup_test.go b/internal/ior_setup_test.go
new file mode 100644
index 0000000..9c8b1b3
--- /dev/null
+++ b/internal/ior_setup_test.go
@@ -0,0 +1,27 @@
+package internal
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestSetupBPFModuleErrorWrapsStage(t *testing.T) {
+	cause := errors.New("boom")
+
+	err := setupBPFModuleError("load object", cause)
+	if err == nil {
+		t.Fatalf("expected wrapped error")
+	}
+	if got, want := err.Error(), "setup BPF module: load object: boom"; got != want {
+		t.Fatalf("wrapped error = %q, want %q", got, want)
+	}
+	if !errors.Is(err, cause) {
+		t.Fatalf("expected wrapped error to retain original cause")
+	}
+}
+
+func TestSetupBPFModuleErrorNil(t *testing.T) {
+	if err := setupBPFModuleError("attach probes", nil); err != nil {
+		t.Fatalf("expected nil error passthrough, got %v", err)
+	}
+}