tests: add evm gas oracle tests

Author: Aman035

universalClient/chains/evm/gas_oracle_test.go

@@ -0,0 +1,104 @@
+package evm
+
+import (
+	"testing"
+	"time"
+
+	"github.com/rs/zerolog"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewGasOracle(t *testing.T) {
+	t.Run("creates gas oracle with valid params", func(t *testing.T) {
+		logger := zerolog.Nop()
+		chainID := "eip155:1"
+		interval := 30
+
+		oracle := NewGasOracle(nil, nil, chainID, interval, logger)
+
+		require.NotNil(t, oracle)
+		assert.Equal(t, chainID, oracle.chainID)
+		assert.Equal(t, interval, oracle.gasPriceIntervalSeconds)
+		assert.Nil(t, oracle.rpcClient)
+		assert.Nil(t, oracle.pushSigner)
+		assert.NotNil(t, oracle.stopCh)
+	})
+
+	t.Run("creates gas oracle with different chain IDs", func(t *testing.T) {
+		logger := zerolog.Nop()
+
+		testCases := []string{
+			"eip155:1",
+			"eip155:97",
+			"eip155:137",
+			"eip155:42161",
+		}
+
+		for _, chainID := range testCases {
+			oracle := NewGasOracle(nil, nil, chainID, 30, logger)
+			assert.Equal(t, chainID, oracle.chainID)
+		}
+	})
+}
+
+func TestGasOracleGetGasOracleFetchInterval(t *testing.T) {
+	logger := zerolog.Nop()
+
+	t.Run("returns configured interval", func(t *testing.T) {
+		oracle := NewGasOracle(nil, nil, "eip155:1", 60, logger)
+		interval := oracle.getGasOracleFetchInterval()
+		assert.Equal(t, 60*time.Second, interval)
+	})
+
+	t.Run("returns default for zero interval", func(t *testing.T) {
+		oracle := NewGasOracle(nil, nil, "eip155:1", 0, logger)
+		interval := oracle.getGasOracleFetchInterval()
+		assert.Equal(t, 30*time.Second, interval)
+	})
+
+	t.Run("returns default for negative interval", func(t *testing.T) {
+		oracle := NewGasOracle(nil, nil, "eip155:1", -10, logger)
+		interval := oracle.getGasOracleFetchInterval()
+		assert.Equal(t, 30*time.Second, interval)
+	})
+
+	t.Run("respects custom intervals", func(t *testing.T) {
+		testCases := []struct {
+			input    int
+			expected time.Duration
+		}{
+			{10, 10 * time.Second},
+			{30, 30 * time.Second},
+			{60, 60 * time.Second},
+			{120, 120 * time.Second},
+		}
+
+		for _, tc := range testCases {
+			oracle := NewGasOracle(nil, nil, "eip155:1", tc.input, logger)
+			interval := oracle.getGasOracleFetchInterval()
+			assert.Equal(t, tc.expected, interval, "interval %d should result in %v", tc.input, tc.expected)
+		}
+	})
+}
+
+func TestGasOracleStop(t *testing.T) {
+	t.Run("stop waits for goroutine", func(t *testing.T) {
+		logger := zerolog.Nop()
+		oracle := NewGasOracle(nil, nil, "eip155:1", 30, logger)
+
+		// Should not panic or hang
+		oracle.Stop()
+	})
+}
+
+func TestGasOracleStruct(t *testing.T) {
+	t.Run("struct has expected fields", func(t *testing.T) {
+		oracle := &GasOracle{}
+		assert.Nil(t, oracle.rpcClient)
+		assert.Nil(t, oracle.pushSigner)
+		assert.Empty(t, oracle.chainID)
+		assert.Equal(t, 0, oracle.gasPriceIntervalSeconds)
+		assert.Nil(t, oracle.stopCh)
+	})
+}