feat: set up project

internal/services/btc/get_balance_test.go

@@ -0,0 +1,14 @@
+package btc
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_bitcoinService_GetBalance(t *testing.T) {
+	th := newTestHelper()
+	balance, err := th.b.GetBalance()
+	require.NoError(t, err)
+	require.Greater(t, balance, 0.0)
+}