tdd stub bpis

ledger/bpi.go

@@ -0,0 +1,17 @@
+package ledger
+
+import "io"
+
+type BPIs string
+
+type BPI map[string]float64
+
+func NewBPIs(p string) (BPIs, error) {
+	bpis := BPIs(p)
+	_, err := bpis.values()
+	return bpis, err
+}
+
+func (bpis BPIs) values() (map[Currency]BPI, error) {
+	return nil, io.EOF
+}