fix: IPv4 CIDRPool tests expect wrong gatewayIndex for /31

[andrewwhitecdw]

This PR addresses the following issue in pkg/networkoperatorplugin/spectrumx/addressing_test.go: IPv4 CIDRPool tests expect wrong gatewayIndex for /31.

Changes

• pkg/networkoperatorplugin/spectrumx/addressing_test.go: IPv4 CIDRPool tests expect wrong gatewayIndex for /31.

Details

--- a/pkg/networkoperatorplugin/spectrumx/addressing_test.go
+++ b/pkg/networkoperatorplugin/spectrumx/addressing_test.go
@@ -1,3 +1,3 @@
-require.Equal(t, 0, pools[0].GatewayIndex)
-		GatewayIndex:         0,
-		GatewayIndex:         0,
+require.Equal(t, 1, pools[0].GatewayIndex)
+		GatewayIndex:         1,
+		GatewayIndex:         1,

Tests

• pkg/networkoperatorplugin/spectrumx/addressing_test.go

--- a/pkg/networkoperatorplugin/spectrumx/addressing_test.go
+++ b/pkg/networkoperatorplugin/spectrumx/addressing_test.go
@@ -205,7 +205,8 @@ func TestBuildCIDRPoolsFromAIR2Tier(t *testing.T) {
 			require.NoError(t, err)
 			require.Len(t, pools, tt.wantPools)
 			require.Equal(t, tt.wantFirstName, pools[0].Name)
+			require.Equal(t, 1, pools[0].GatewayIndex)
 			require.Equal(t, []StaticAllocation{
 				{Gateway: "172.16.0.1", NodeName: "worker-su01-rack01-h01", Prefix: "172.16.0.0/31"},
 				{Gateway: "172.16.0.3", NodeName: "worker-su01-rack01-h02", Prefix: "172.16.0.2/31"},
 			}, pools[0].StaticAllocations)

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• All commits are signed off (Signed-off-by trailer, DCO).

---

Update (post-Greptile review): The IPv4 poolSettings implementation has been updated to return GatewayIndex: 1 so it agrees with the corrected test assertions. The Spectrum-X addressing test suite now passes (go test ./pkg/networkoperatorplugin/spectrumx/...). Commit: f9310104ae35ca8067ee669825a87e257bd03c70.

[greptile-apps]

Greptile Summary

The PR completes the IPv4 /31 gateway correction by changing the implementation to use gateway index 1 and updating the corresponding Spectrum-X addressing tests.

• Aligns poolSettings with the odd-address leaf gateways generated for IPv4 /31 allocations.
• Updates reference- and AIR-topology test expectations for the corrected gateway index.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the implementation now uses index 1 for the generated odd-address IPv4 /31 gateway, resolving the previously reported test contradiction.

Important Files Changed

Filename	Overview
pkg/networkoperatorplugin/spectrumx/addressing.go	Changes IPv4 /31 pools to use gateway index 1, matching the generated leaf gateway address.
pkg/networkoperatorplugin/spectrumx/addressing_test.go	Updates IPv4 CIDRPool assertions to verify the corrected gateway index across supported topology variants.

_{Reviews (2): Last reviewed commit: "fix: IPv4 CIDRPool tests expect wrong ga..." | Re-trigger Greptile}

[andrewwhitecdw]

@greptile-apps Thanks for the review. I updated the IPv4 poolSettings implementation to return GatewayIndex: 1, matching the corrected test expectations (including the AIR 2-tier subtests). go test ./pkg/networkoperatorplugin/spectrumx/... now passes.

[greptile-apps]

Looks good. The fix is consistent — all four assertion sites now expect GatewayIndex: 1, which correctly reflects that in a /31 the gateway is the second address (index 1). The existing PerNodeExclusions: [{StartIndex: 1, EndIndex: 1}] already encoded this, so the test expectations were simply out of sync with the implementation intent. Good to merge.