[test]: core schemas cover nil context deadline

Author: ragokan

core/schemas/context.go

@@ -204,6 +204,9 @@ func (bc *BifrostContext) cancel(err error) {
 // For scoped contexts, delegates to the root context.
 // If both this context and the parent have deadlines, the earlier one is returned.
 func (bc *BifrostContext) Deadline() (time.Time, bool) {
+	if bc == nil {
+		return time.Time{}, false
+	}
 	if bc.valueDelegate != nil {
 		return bc.valueDelegate.Deadline()
 	}

core/schemas/context_test.go

@@ -209,6 +209,11 @@ func TestNewBifrostContext_NilParent(t *testing.T) {
 }
 
 func TestBifrostContext_DeadlineWithClearedParent(t *testing.T) {
+	var nilCtx *BifrostContext
+	if _, ok := nilCtx.Deadline(); ok {
+		t.Fatal("nil BifrostContext should not report a deadline")
+	}
+
 	deadline, ok := (&BifrostContext{}).Deadline()
 	if ok {
 		t.Errorf("Context with cleared parent should not have deadline, got %v", deadline)