Fix some incorrect test debug output on error

pkg/util/iptables/iptables_test.go

@@ -184,10 +184,10 @@ func TestEnsureRuleAlreadyExists(t *testing.T) {
 		t.Errorf("expected exists = true")
 	}
 	if fcmd.CombinedOutputCalls != 2 {
-		t.Errorf("expected 2 CombinedOutput() call, got %d", fcmd.CombinedOutputCalls)
+		t.Errorf("expected 2 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 	if !util.NewStringSet(fcmd.CombinedOutputLog[1]...).HasAll("iptables", "-t", "nat", "-C", "OUTPUT", "abc", "123") {
-		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[0])
+		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[1])
 	}
 }
 
@@ -223,7 +223,7 @@ func TestEnsureRuleNew(t *testing.T) {
 		t.Errorf("expected 3 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 	if !util.NewStringSet(fcmd.CombinedOutputLog[2]...).HasAll("iptables", "-t", "nat", "-A", "OUTPUT", "abc", "123") {
-		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[1])
+		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[2])
 	}
 }
 
@@ -250,7 +250,7 @@ func TestEnsureRuleErrorChecking(t *testing.T) {
 		t.Errorf("expected failure")
 	}
 	if fcmd.CombinedOutputCalls != 2 {
-		t.Errorf("expected 2 CombinedOutput() call, got %d", fcmd.CombinedOutputCalls)
+		t.Errorf("expected 2 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 }
 
@@ -307,10 +307,10 @@ func TestDeleteRuleAlreadyExists(t *testing.T) {
 		t.Errorf("expected success, got %v", err)
 	}
 	if fcmd.CombinedOutputCalls != 2 {
-		t.Errorf("expected 2 CombinedOutput() call, got %d", fcmd.CombinedOutputCalls)
+		t.Errorf("expected 2 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 	if !util.NewStringSet(fcmd.CombinedOutputLog[1]...).HasAll("iptables", "-t", "nat", "-C", "OUTPUT", "abc", "123") {
-		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[0])
+		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[1])
 	}
 }
 
@@ -343,7 +343,7 @@ func TestDeleteRuleNew(t *testing.T) {
 		t.Errorf("expected 3 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 	if !util.NewStringSet(fcmd.CombinedOutputLog[2]...).HasAll("iptables", "-t", "nat", "-D", "OUTPUT", "abc", "123") {
-		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[1])
+		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[2])
 	}
 }
 
@@ -370,7 +370,7 @@ func TestDeleteRuleErrorChecking(t *testing.T) {
 		t.Errorf("expected failure")
 	}
 	if fcmd.CombinedOutputCalls != 2 {
-		t.Errorf("expected 2 CombinedOutput() call, got %d", fcmd.CombinedOutputCalls)
+		t.Errorf("expected 2 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
 	}
 }