feat: implement swap relayer cmd package (#282)

cliutil/utils_test.go

@@ -81,3 +81,31 @@ func TestGetVersion(t *testing.T) {
 	require.NotEmpty(t, GetVersion())
 	t.Log(GetVersion())
 }
+
+func Test_expandBootnodes(t *testing.T) {
+	cliNodes := []string{
+		" node1, node2 ,node3,node4 ",
+		"node5",
+		"\tnode6\n",
+		"node7,node8",
+	}
+	expected := []string{
+		"node1",
+		"node2",
+		"node3",
+		"node4",
+		"node5",
+		"node6",
+		"node7",
+		"node8",
+	}
+	require.EqualValues(t, expected, ExpandBootnodes(cliNodes))
+}
+
+func Test_expandBootnodes_noNodes(t *testing.T) {
+	// This can happen when the user specifies a single `--bootnodes ""` flag
+	// to not use the default bootnodes for an environment.
+	cliNodes := []string{""}
+	nodes := ExpandBootnodes(cliNodes)
+	require.Zero(t, len(nodes))
+}