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helpers.go
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/
helpers.go
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package test
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import (
"errors"
"reflect"
"sort"
"strings"
)
// Extract the tag annotations from a struct into a string array
func ColsFromStructByTag(tagName string, thing interface{}) []string {
cols := []string{}
t := reflect.TypeOf(thing)
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
if (strings.Compare(tagName, "db") == 0) && (tagName != "") {
// Get the field tag value
tag := field.Tag.Get(tagName)
if tag != "" {
cols = append(cols, tag)
}
}
}
return cols
}
// sortableErrors provides ordering a list of errors for easier comparison with an expected list
type sortableErrors []error
func (s sortableErrors) Len() int {
return len(s)
}
func (s sortableErrors) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
func (s sortableErrors) Less(i, j int) bool {
return s[i].Error() < s[j].Error()
}
// SortErrors sorts the list of errors lexically
func SortErrors(p []error) []error {
if p == nil {
return p
}
sort.Sort(sortableErrors(p))
return p
}
func SplitErrors(err error) []error {
if err == nil {
return []error{}
}
strs := strings.Split(err.Error(), ", ")
errs := []error{}
for _, str := range strs {
errs = append(errs, errors.New(str))
}
return errs
}