1 files changed, 34 insertions, 0 deletions
diff --git a/verhoeff/verhoeff_test.go b/verhoeff/verhoeff_test.go
new file mode 100644
index 0000000..7678b1f
--- /dev/null
+++ b/verhoeff/verhoeff_test.go
@@ -0,0 +1,34 @@
+package verhoeff
+
+import (
+	"testing"
+
+	"github.com/neonxp/checksum"
+)
+
+func TestVerhoeff(t *testing.T) {
+	samples := map[string]error{
+		"4561261212345464":        checksum.ErrInvalidChecksum,
+		"A561261212345464":        checksum.ErrInvalidNumber,
+		"758722":                  nil,
+		"123451":                  nil,
+		"1428570":                 nil,
+		"1234567890120":           nil,
+		"84736430954837284567892": nil,
+	}
+	for num, result := range samples {
+		if err := Check(num); err != result {
+			t.Errorf("Expected %+v actual %+v", result, err)
+		}
+	}
+
+	num := "4561261212345467"
+	checksum, err := Generate(num)
+	if err != nil {
+		t.Error(err)
+	}
+	numberWithChecksum := num + checksum
+	if err := Check(numberWithChecksum); err != nil {
+		t.Errorf("Expected no error actual %+v", err)
+	}
+}