From 3d9d6ba8f07b0138f810256f3aac37d9fe30b667 Mon Sep 17 00:00:00 2001
From: Matt Yang <matt.yang@smartcontract.com>
Date: Wed, 27 Sep 2023 10:21:43 -0400
Subject: [PATCH] add test for exec getPrice

---
 .../ccip/prices/exec_price_estimator_test.go  | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 core/services/ocr2/plugins/ccip/prices/exec_price_estimator_test.go

diff --git a/core/services/ocr2/plugins/ccip/prices/exec_price_estimator_test.go b/core/services/ocr2/plugins/ccip/prices/exec_price_estimator_test.go
new file mode 100644
index 0000000000..7f0be0f1ee
--- /dev/null
+++ b/core/services/ocr2/plugins/ccip/prices/exec_price_estimator_test.go
@@ -0,0 +1,106 @@
+package prices
+
+import (
+	"context"
+	"math/big"
+	"testing"
+
+	"github.com/pkg/errors"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/smartcontractkit/chainlink/v2/core/assets"
+	"github.com/smartcontractkit/chainlink/v2/core/chains/evm/gas"
+	"github.com/smartcontractkit/chainlink/v2/core/chains/evm/gas/mocks"
+)
+
+func TestUSDCReader_GetGasPrice(t *testing.T) {
+	ctx := context.Background()
+
+	testCases := []struct {
+		name                      string
+		sourceFeeEstimatorRespFee gas.EvmFee
+		sourceFeeEstimatorRespErr error
+		maxGasPrice               *big.Int
+		expPrice                  GasPrice
+		expErr                    bool
+	}{
+		{
+			name: "gets legacy gas price",
+			sourceFeeEstimatorRespFee: gas.EvmFee{
+				Legacy:        assets.NewWei(big.NewInt(10)),
+				DynamicFeeCap: nil,
+			},
+			sourceFeeEstimatorRespErr: nil,
+			maxGasPrice:               big.NewInt(1),
+			expPrice:                  big.NewInt(10),
+			expErr:                    false,
+		},
+		{
+			name: "gets dynamic gas price",
+			sourceFeeEstimatorRespFee: gas.EvmFee{
+				Legacy:        nil,
+				DynamicFeeCap: assets.NewWei(big.NewInt(20)),
+			},
+			sourceFeeEstimatorRespErr: nil,
+			maxGasPrice:               big.NewInt(1),
+			expPrice:                  big.NewInt(20),
+			expErr:                    false,
+		},
+		{
+			name: "gets dynamic gas price over legacy gas price",
+			sourceFeeEstimatorRespFee: gas.EvmFee{
+				Legacy:        assets.NewWei(big.NewInt(10)),
+				DynamicFeeCap: assets.NewWei(big.NewInt(20)),
+			},
+			sourceFeeEstimatorRespErr: nil,
+			maxGasPrice:               big.NewInt(1),
+			expPrice:                  big.NewInt(20),
+			expErr:                    false,
+		},
+		{
+			name: "fee estimator error",
+			sourceFeeEstimatorRespFee: gas.EvmFee{
+				Legacy:        assets.NewWei(big.NewInt(10)),
+				DynamicFeeCap: nil,
+			},
+			sourceFeeEstimatorRespErr: errors.New("fee estimator error"),
+			maxGasPrice:               big.NewInt(1),
+			expPrice:                  nil,
+			expErr:                    true,
+		},
+		{
+			name: "nil gas price error",
+			sourceFeeEstimatorRespFee: gas.EvmFee{
+				Legacy:        nil,
+				DynamicFeeCap: nil,
+			},
+			sourceFeeEstimatorRespErr: nil,
+			maxGasPrice:               big.NewInt(1),
+			expPrice:                  nil,
+			expErr:                    true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			sourceFeeEstimator := mocks.NewEvmFeeEstimator(t)
+			sourceFeeEstimator.On("GetFee", ctx, []byte(nil), uint32(0), assets.NewWei(tc.maxGasPrice)).Return(
+				tc.sourceFeeEstimatorRespFee, uint32(0), tc.sourceFeeEstimatorRespErr)
+
+			g := ExecGasPriceEstimator{
+				estimator:   sourceFeeEstimator,
+				maxGasPrice: tc.maxGasPrice,
+			}
+
+			gasPrice, err := g.GetGasPrice(ctx)
+			if tc.expErr {
+				assert.Nil(t, gasPrice)
+				assert.Error(t, err)
+				return
+			}
+			assert.NoError(t, err)
+			assert.Equal(t, tc.expPrice, gasPrice)
+		})
+	}
+
+}