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/*
Copyright 2021 The Kubernetes Authors.
Licensed 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.
*/
package flag
import (
"fmt"
"reflect"
"strings"
"testing"
"github.com/spf13/pflag"
)
func TestStringSlice(t *testing.T) {
tests := []struct {
args []string
def []string
expected []string
parseError string
changed bool
}{
{
args: []string{},
expected: nil,
},
{
args: []string{"a"},
expected: []string{"a"},
changed: true,
},
{
args: []string{"a", "b"},
expected: []string{"a", "b"},
changed: true,
},
{
def: []string{"a"},
args: []string{"a", "b"},
expected: []string{"a", "b"},
changed: true,
},
{
def: []string{"a", "b"},
args: []string{"a", "b"},
expected: []string{"a", "b"},
changed: true,
},
}
for i, test := range tests {
fs := pflag.NewFlagSet("testStringSlice", pflag.ContinueOnError)
var s []string
s = append(s, test.def...)
v := NewStringSlice(&s)
fs.Var(v, "slice", "usage")
args := []string{}
for _, a := range test.args {
args = append(args, fmt.Sprintf("--slice=%s", a))
}
err := fs.Parse(args)
if test.parseError != "" {
if err == nil {
t.Errorf("%d: expected error %q, got nil", i, test.parseError)
} else if !strings.Contains(err.Error(), test.parseError) {
t.Errorf("%d: expected error %q, got %q", i, test.parseError, err)
}
} else if err != nil {
t.Errorf("%d: expected nil error, got %v", i, err)
}
if !reflect.DeepEqual(s, test.expected) {
t.Errorf("%d: expected %+v, got %+v", i, test.expected, s)
}
if v.changed != test.changed {
t.Errorf("%d: expected %t got %t", i, test.changed, v.changed)
}
}
}
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