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// Copyright 2023 Google LLC
//
// 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 configfsi
import (
"crypto/rand"
"strings"
"testing"
)
func TestTsmPathString(t *testing.T) {
tcs := []struct {
input *TsmPath
want string
}{
{input: &TsmPath{}, want: "/sys/kernel/config/tsm"},
{input: &TsmPath{Subsystem: "rebort"}, want: "/sys/kernel/config/tsm/rebort"},
{
input: &TsmPath{Subsystem: "repart", Entry: "j"},
want: "/sys/kernel/config/tsm/repart/j",
},
{
input: &TsmPath{Subsystem: "report", Entry: "r", Attribute: "inblob"},
want: "/sys/kernel/config/tsm/report/r/inblob",
},
}
for _, tc := range tcs {
got := tc.input.String()
if got != tc.want {
t.Errorf("%v.String() = %q, want %q", tc.input, got, tc.want)
}
}
}
func match(err error, want string) bool {
if err == nil && want == "" {
return true
}
return (err != nil && want != "" && strings.Contains(err.Error(), want))
}
func TestParseTsmPath(t *testing.T) {
tcs := []struct {
input string
want *TsmPath
wantErr string
}{
{
input: "not/to/configfs",
wantErr: `"not/to/configfs" does not begin with "/sys/kernel/config/tsm"`,
},
{
input: "///sys/kernel/config/tsm",
wantErr: `"/sys/kernel/config/tsm" does not contain a subsystem`,
},
{
input: "/sys/kernel/config/tsm/report/is/way/too/long",
wantErr: `"report/is/way/too/long" suffix expected to be of form`,
},
{
input: "/sys/kernel/config/tsm/a",
want: &TsmPath{Subsystem: "a"},
},
{
input: "/sys/kernel/config/tsm/a/b",
want: &TsmPath{Subsystem: "a", Entry: "b"},
},
{
input: "/sys/kernel/config/tsm/a/b/c",
want: &TsmPath{Subsystem: "a", Entry: "b", Attribute: "c"},
},
}
for _, tc := range tcs {
got, err := ParseTsmPath(tc.input)
if !match(err, tc.wantErr) {
t.Errorf("ParseTsmPath(%q) = %v, %v errored unexpectedly. Want %s",
tc.input, got, err, tc.wantErr)
}
if tc.wantErr == "" && *got != *tc.want {
t.Errorf("ParseTsmPath(%q) = %v, nil. Want %v", tc.input, *got, *tc.want)
}
}
}
func TestTempName(t *testing.T) {
tcs := []struct {
name string
pattern string
wantPrefix string
wantSuffix string
}{
{name: "empty"},
{
name: "no asterisk",
pattern: "hi",
wantPrefix: "hi",
},
{name: "1 asterisk at end",
pattern: "friend*",
wantPrefix: "friend",
},
{name: "many asterisks",
pattern: "friend*ly*monster",
wantPrefix: "friend*ly",
wantSuffix: "monster",
},
}
for _, tc := range tcs {
t.Run(tc.name, func(t *testing.T) {
got := TempName(rand.Reader, tc.pattern)
wantReplaceLen := len(tc.pattern) + randomPathSize
if strings.LastIndex(tc.pattern, "*") != -1 {
wantReplaceLen -= 1 // The * gets replaced, so subtract it.
}
if len(got) != wantReplaceLen {
t.Errorf("TempName(_, %q) = %q, whose length is not %d", tc.pattern, got, wantReplaceLen)
}
if !strings.HasPrefix(got, tc.wantPrefix) {
t.Errorf("TempName(_, %q) = %q, does not have prefix %q", tc.pattern, got, tc.wantPrefix)
}
if !strings.HasSuffix(got, tc.wantSuffix) {
t.Errorf("TempName(_, %q) = %q, does not have suffix %q", tc.pattern, got, tc.wantSuffix)
}
})
}
}
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