Init BindGen unit tests (#8650)

op-bindings/bindgen/fixtures_test.go

+package main
+
+// The Init bytecode used for these tests can either be sourced
+// on-chain using the deployment tx of these contracts, or can be
+// found in the bindings output from BindGen (../bindings/)
+var removeDeploymentSaltTests = []struct {
+	name           string
+	deploymentData string
+	deploymentSalt string
+	expected       string
+}{
+	{
+		"TestRemoveDeploymentSalt Case #1",
+		Safe_v130InitBytecode,
+		"0000000000000000000000000000000000000000000000000000000000000000",
+		Safe_v130InitBytecodeNoSalt,
+	},
+	{
+		"TestRemoveDeploymentSalt Case #2",
+		Permit2InitBytecode,
+		"0000000000000000000000000000000000000000d3af2663da51c10215000000",
+		Permit2InitBytecodeNoSalt,
+	},
+	{
+		"TestRemoveDeploymentSalt Case #3",
+		EntryPointInitBytecode,
+		"0000000000000000000000000000000000000000000000000000000000000000",
+		EntryPointInitBytecodeNoSalt,
+	},
+}
+
+var removeDeploymentSaltTestsFailures = []struct {
+	name           string
+	deploymentData string
+	deploymentSalt string
+	expectedError  string
+}{
+	{
+		"TestRemoveDeploymentSalt Failure Case #1 Invalid Regex",
+		"0x1234abc",
+		"[invalid-regex",
+		"failed to compile regular expression: error parsing regexp: missing closing ]: `[invalid-regex)`",
+	},
+	{
+		"TestRemoveDeploymentSalt Failure Case #2 Salt Not Found",
+		"0x1234abc",
+		"4567",
+		"expected salt: 4567 to be at the beginning of the contract initialization code: 0x1234abc, but it wasn't",
+	},
+}

op-bindings/bindgen/remote_handlers_test.go

+package main
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestRemoveDeploymentSalt(t *testing.T) {
+	generator := bindGenGeneratorRemote{}
+
+	for _, tt := range removeDeploymentSaltTests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, _ := generator.removeDeploymentSalt(tt.deploymentData, tt.deploymentSalt)
+			require.Equal(t, tt.expected, got)
+		})
+	}
+}
+
+func TestRemoveDeploymentSaltFailures(t *testing.T) {
+	generator := bindGenGeneratorRemote{}
+
+	for _, tt := range removeDeploymentSaltTestsFailures {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := generator.removeDeploymentSalt(tt.deploymentData, tt.deploymentSalt)
+			require.Equal(t, err.Error(), tt.expectedError)
+		})
+	}
+}