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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package exec
import (
"reflect"
"testing"
)
func TestDedupEnv(t *testing.T) {
t.Parallel()
tests := []struct {
noCase bool
nulOK bool
in []string
want []string
wantErr bool
}{
{
noCase: true,
in: []string{"k1=v1", "k2=v2", "K1=v3"},
want: []string{"k2=v2", "K1=v3"},
},
{
noCase: false,
in: []string{"k1=v1", "K1=V2", "k1=v3"},
want: []string{"K1=V2", "k1=v3"},
},
{
in: []string{"=a", "=b", "foo", "bar"},
want: []string{"=b", "foo", "bar"},
},
{
// #49886: preserve weird Windows keys with leading "=" signs.
noCase: true,
in: []string{`=C:=C:\golang`, `=D:=D:\tmp`, `=D:=D:\`},
want: []string{`=C:=C:\golang`, `=D:=D:\`},
},
{
// #52436: preserve invalid key-value entries (for now).
// (Maybe filter them out or error out on them at some point.)
in: []string{"dodgy", "entries"},
want: []string{"dodgy", "entries"},
},
{
// Filter out entries containing NULs.
in: []string{"A=a\x00b", "B=b", "C\x00C=c"},
want: []string{"B=b"},
wantErr: true,
},
{
// Plan 9 needs to preserve environment variables with NUL (#56544).
nulOK: true,
in: []string{"path=one\x00two"},
want: []string{"path=one\x00two"},
},
}
for _, tt := range tests {
got, err := dedupEnvCase(tt.noCase, tt.nulOK, tt.in)
if !reflect.DeepEqual(got, tt.want) || (err != nil) != tt.wantErr {
t.Errorf("Dedup(%v, %q) = %q, %v; want %q, error:%v", tt.noCase, tt.in, got, err, tt.want, tt.wantErr)
}
}
}