Add banks data tests

banks_test.go

@@ -0,0 +1,31 @@
+package banksdb
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestNotEmptyDB(t *testing.T) {
+	require.NotEmpty(t, banksByCountry)
+}
+
+func TestNotEmptyBanksInCountry(t *testing.T) {
+	for country, banks := range banksByCountry {
+		require.NotEmpty(t, banks, "Country '%s' is empty", country)
+	}
+}
+
+func TestUniquePrefixesInBanks(t *testing.T) {
+	t.Skip() // Now this test failed because there is some nonunique prefixes in db.
+	seen := make(map[int]struct{})
+	for _, banks := range banksByCountry {
+		for _, bank := range banks {
+			for _, prefix := range bank.Prefixes {
+				_, isSeenBefore := seen[prefix]
+				require.False(t, isSeenBefore, "prefix %d seen before", prefix)
+				seen[prefix] = struct{}{}
+			}
+		}
+	}
+}