add: parse okato code

Author: sshaplygin

okato/models.go

@@ -73,7 +73,7 @@ func ParseOKATO(okato string) (*OKATOStruct, error) {
 		okatoArr = append(okatoArr, val)
 	}
 
-	if len(okato) != codeLength {
+	if len(okatoArr) != codeLength {
 		return nil, &models.CommonError{
 			Method: packageName,
 			Err:    models.ErrInvalidLength,

okato/okato_test.go

@@ -1,16 +1,53 @@
 package okato
 
 import (
+	"fmt"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/sshaplygin/docs-code/models"
 )
 
 func Test_Validete(t *testing.T) {
-	require.Panics(t, func() {
-		_, err := Validate("")
-		require.NoError(t, err)
-	})
+	type testCase struct {
+		Code    string
+		IsValid bool
+		Error   error
+	}
+
+	testCases := []testCase{
+		{
+			Code:  "1234567888776",
+			Error: models.ErrInvalidLength,
+		},
+		{
+			Code:  "044525",
+			Error: models.ErrInvalidLength,
+		},
+		{
+			Code:    "17 205 000 000",
+			IsValid: true,
+		},
+		{
+			Code:    "01 201 802 003",
+			IsValid: true,
+		},
+	}
+
+	for i, tc := range testCases {
+		tc := tc
+
+		isValid, err := Validate(tc.Code)
+		if err != nil {
+			require.ErrorAs(t, err, &tc.Error, fmt.Sprintf("invalid test case %d: input: %s", i, tc.Code))
+		} else {
+			require.NoError(t, err, fmt.Sprintf("invalid test case %d: input: %s", i, tc.Code))
+		}
+
+		assert.Equal(t, tc.IsValid, isValid, tc.Code)
+	}
 }
 
 func Test_Generate(t *testing.T) {