test: add blobindexer tests for validateSpec method

Author: Monika-Bitfly

backend/pkg/blobindexer/blobindexer_test.go

@@ -1,6 +1,7 @@
 package blobindexer
 
 import (
+	"fmt"
 	"math"
 	"testing"
 	"time"
@@ -509,6 +510,95 @@ func TestGetLastIndexedFinalizedSlot(t *testing.T) {
 	}
 }
 
+func TestValidateSpec(t *testing.T) {
+	tests := []struct {
+		name            string
+		spec            *constypes.StandardSpecResponse
+		configDepositID uint64
+		expectedError   error
+	}{
+		{
+			name: "valid spec",
+			spec: &constypes.StandardSpecResponse{
+				Data: constypes.StandardSpec{
+					DenebForkEpoch:                   uint64Ptr(4),
+					MinEpochsForBlobSidecarsRequests: uint64Ptr(2),
+					DepositNetworkID:                 1,
+				},
+			},
+			configDepositID: 1,
+			expectedError:   nil,
+		},
+		{
+			name: "missing DenebForkEpoch value",
+			spec: &constypes.StandardSpecResponse{
+				Data: constypes.StandardSpec{
+					DenebForkEpoch:                   nil,
+					MinEpochsForBlobSidecarsRequests: uint64Ptr(2),
+					DepositNetworkID:                 1,
+				},
+			},
+			configDepositID: 1,
+			expectedError:   fmt.Errorf("DENEB_FORK_EPOCH not set in spec"),
+		},
+		{
+			name: "missing MinEpochsForBlobSidecarsRequests value",
+			spec: &constypes.StandardSpecResponse{
+				Data: constypes.StandardSpec{
+					DenebForkEpoch:                   uint64Ptr(4),
+					MinEpochsForBlobSidecarsRequests: nil,
+					DepositNetworkID:                 1,
+				},
+			},
+			configDepositID: 1,
+			expectedError:   fmt.Errorf("MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS not set in spec"),
+		},
+		{
+			name: "DepositNetworkID mismatch",
+			spec: &constypes.StandardSpecResponse{
+				Data: constypes.StandardSpec{
+					DenebForkEpoch:                   uint64Ptr(4),
+					MinEpochsForBlobSidecarsRequests: uint64Ptr(2),
+					DepositNetworkID:                 1,
+				},
+			},
+			configDepositID: 2,
+			expectedError:   fmt.Errorf("config.DepositNetworkId mismatch: 2 != 1"),
+		},
+		{
+			name: "all fields missing",
+			spec: &constypes.StandardSpecResponse{
+				Data: constypes.StandardSpec{
+					DenebForkEpoch:                   nil,
+					MinEpochsForBlobSidecarsRequests: nil,
+					DepositNetworkID:                 0,
+				},
+			},
+			configDepositID: 1,
+			expectedError:   fmt.Errorf("DENEB_FORK_EPOCH not set in spec"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			utils.Config = &types.Config{
+				Chain: types.Chain{
+					ClConfig: types.ClChainConfig{
+						DepositNetworkID: tt.configDepositID,
+					},
+				},
+			}
+			err := validateSpec(tt.spec)
+
+			if (err == nil && tt.expectedError != nil) || (err != nil && tt.expectedError == nil) {
+				t.Errorf("got error %v, want %v", err, tt.expectedError)
+			} else if err != nil && tt.expectedError != nil && err.Error() != tt.expectedError.Error() {
+				t.Errorf("got error %v, want %v", err, tt.expectedError)
+			}
+		})
+	}
+}
+
 // unit64Ptr returns a pointer to a uint64
 func uint64Ptr(i uint64) *uint64 {
 	return &i