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/*
Copyright The containerd 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.
*/
/*
File copied and customized based on
https://github.com/moby/moby/tree/v20.10.14/profiles/seccomp/kernel_linux_test.go
*/
package kernelversion
import (
"fmt"
"testing"
)
func TestGetKernelVersion(t *testing.T) {
version, err := getKernelVersion()
if err != nil {
t.Fatal(err)
}
if version == nil {
t.Fatal("version is nil")
}
if version.Kernel == 0 {
t.Fatal("no kernel version")
}
}
// TestParseRelease tests the ParseRelease() function
func TestParseRelease(t *testing.T) {
tests := []struct {
in string
out KernelVersion
expectedErr error
}{
{in: "3.8", out: KernelVersion{Kernel: 3, Major: 8}},
{in: "3.8.0", out: KernelVersion{Kernel: 3, Major: 8}},
{in: "3.8.0-19-generic", out: KernelVersion{Kernel: 3, Major: 8}},
{in: "3.4.54.longterm-1", out: KernelVersion{Kernel: 3, Major: 4}},
{in: "3.10.0-862.2.3.el7.x86_64", out: KernelVersion{Kernel: 3, Major: 10}},
{in: "3.12.8tag", out: KernelVersion{Kernel: 3, Major: 12}},
{in: "3.12-1-amd64", out: KernelVersion{Kernel: 3, Major: 12}},
{in: "3.12foobar", out: KernelVersion{Kernel: 3, Major: 12}},
{in: "99.999.999-19-generic", out: KernelVersion{Kernel: 99, Major: 999}},
{in: "", expectedErr: fmt.Errorf(`failed to parse kernel version "": EOF`)},
{in: "3", expectedErr: fmt.Errorf(`failed to parse kernel version "3": unexpected EOF`)},
{in: "3.", expectedErr: fmt.Errorf(`failed to parse kernel version "3.": EOF`)},
{in: "3a", expectedErr: fmt.Errorf(`failed to parse kernel version "3a": input does not match format`)},
{in: "3.a", expectedErr: fmt.Errorf(`failed to parse kernel version "3.a": expected integer`)},
{in: "a", expectedErr: fmt.Errorf(`failed to parse kernel version "a": expected integer`)},
{in: "a.a", expectedErr: fmt.Errorf(`failed to parse kernel version "a.a": expected integer`)},
{in: "a.a.a-a", expectedErr: fmt.Errorf(`failed to parse kernel version "a.a.a-a": expected integer`)},
{in: "-3", expectedErr: fmt.Errorf(`failed to parse kernel version "-3": expected integer`)},
{in: "-3.", expectedErr: fmt.Errorf(`failed to parse kernel version "-3.": expected integer`)},
{in: "-3.8", expectedErr: fmt.Errorf(`failed to parse kernel version "-3.8": expected integer`)},
{in: "-3.-8", expectedErr: fmt.Errorf(`failed to parse kernel version "-3.-8": expected integer`)},
{in: "3.-8", expectedErr: fmt.Errorf(`failed to parse kernel version "3.-8": expected integer`)},
}
for _, tc := range tests {
t.Run(tc.in, func(t *testing.T) {
version, err := parseRelease(tc.in)
if tc.expectedErr != nil {
if err == nil {
t.Fatal("expected an error")
}
if err.Error() != tc.expectedErr.Error() {
t.Fatalf("expected: %s, got: %s", tc.expectedErr, err)
}
return
}
if err != nil {
t.Fatal("unexpected error:", err)
}
if version == nil {
t.Fatal("version is nil")
}
if version.Kernel != tc.out.Kernel || version.Major != tc.out.Major {
t.Fatalf("expected: %d.%d, got: %d.%d", tc.out.Kernel, tc.out.Major, version.Kernel, version.Major)
}
})
}
}
func TestGreaterEqualThan(t *testing.T) {
// Get the current kernel version, so that we can make test relative to that
v, err := getKernelVersion()
if err != nil {
t.Fatal(err)
}
tests := []struct {
doc string
in KernelVersion
expected bool
}{
{
doc: "same version",
in: KernelVersion{v.Kernel, v.Major},
expected: true,
},
{
doc: "kernel minus one",
in: KernelVersion{v.Kernel - 1, v.Major},
expected: true,
},
{
doc: "kernel plus one",
in: KernelVersion{v.Kernel + 1, v.Major},
expected: false,
},
{
doc: "major plus one",
in: KernelVersion{v.Kernel, v.Major + 1},
expected: false,
},
}
for _, tc := range tests {
t.Run(tc.doc+": "+tc.in.String(), func(t *testing.T) {
ok, err := GreaterEqualThan(tc.in)
if err != nil {
t.Fatal("unexpected error:", err)
}
if ok != tc.expected {
t.Fatalf("expected: %v, got: %v", tc.expected, ok)
}
})
}
}
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