1// +build !windows
2
3package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
4
5import (
6	"fmt"
7	"testing"
8)
9
10func assertParseRelease(t *testing.T, release string, b *VersionInfo, result int) {
11	var (
12		a *VersionInfo
13	)
14	a, _ = ParseRelease(release)
15
16	if r := CompareKernelVersion(*a, *b); r != result {
17		t.Fatalf("Unexpected kernel version comparison result for (%v,%v). Found %d, expected %d", release, b, r, result)
18	}
19	if a.Flavor != b.Flavor {
20		t.Fatalf("Unexpected parsed kernel flavor.  Found %s, expected %s", a.Flavor, b.Flavor)
21	}
22}
23
24// TestParseRelease tests the ParseRelease() function
25func TestParseRelease(t *testing.T) {
26	assertParseRelease(t, "3.8.0", &VersionInfo{Kernel: 3, Major: 8, Minor: 0}, 0)
27	assertParseRelease(t, "3.4.54.longterm-1", &VersionInfo{Kernel: 3, Major: 4, Minor: 54, Flavor: ".longterm-1"}, 0)
28	assertParseRelease(t, "3.4.54.longterm-1", &VersionInfo{Kernel: 3, Major: 4, Minor: 54, Flavor: ".longterm-1"}, 0)
29	assertParseRelease(t, "3.8.0-19-generic", &VersionInfo{Kernel: 3, Major: 8, Minor: 0, Flavor: "-19-generic"}, 0)
30	assertParseRelease(t, "3.10.0-862.2.3.el7.x86_64", &VersionInfo{Kernel: 3, Major: 10, Minor: 0, Flavor: "-862.2.3.el7.x86_64"}, 0)
31	assertParseRelease(t, "3.12.8tag", &VersionInfo{Kernel: 3, Major: 12, Minor: 8, Flavor: "tag"}, 0)
32	assertParseRelease(t, "3.12-1-amd64", &VersionInfo{Kernel: 3, Major: 12, Minor: 0, Flavor: "-1-amd64"}, 0)
33	assertParseRelease(t, "3.8.0", &VersionInfo{Kernel: 4, Major: 8, Minor: 0}, -1)
34	// Errors
35	invalids := []string{
36		"3",
37		"a",
38		"a.a",
39		"a.a.a-a",
40	}
41	for _, invalid := range invalids {
42		expectedMessage := fmt.Sprintf("Can't parse kernel version %v", invalid)
43		if _, err := ParseRelease(invalid); err == nil || err.Error() != expectedMessage {
44
45		}
46	}
47}
48
49func assertKernelVersion(t *testing.T, a, b VersionInfo, result int) {
50	if r := CompareKernelVersion(a, b); r != result {
51		t.Fatalf("Unexpected kernel version comparison result. Found %d, expected %d", r, result)
52	}
53}
54
55// TestCompareKernelVersion tests the CompareKernelVersion() function
56func TestCompareKernelVersion(t *testing.T) {
57	assertKernelVersion(t,
58		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
59		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
60		0)
61	assertKernelVersion(t,
62		VersionInfo{Kernel: 2, Major: 6, Minor: 0},
63		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
64		-1)
65	assertKernelVersion(t,
66		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
67		VersionInfo{Kernel: 2, Major: 6, Minor: 0},
68		1)
69	assertKernelVersion(t,
70		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
71		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
72		0)
73	assertKernelVersion(t,
74		VersionInfo{Kernel: 3, Major: 8, Minor: 5},
75		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
76		1)
77	assertKernelVersion(t,
78		VersionInfo{Kernel: 3, Major: 0, Minor: 20},
79		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
80		-1)
81	assertKernelVersion(t,
82		VersionInfo{Kernel: 3, Major: 7, Minor: 20},
83		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
84		-1)
85	assertKernelVersion(t,
86		VersionInfo{Kernel: 3, Major: 8, Minor: 20},
87		VersionInfo{Kernel: 3, Major: 7, Minor: 0},
88		1)
89	assertKernelVersion(t,
90		VersionInfo{Kernel: 3, Major: 8, Minor: 20},
91		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
92		1)
93	assertKernelVersion(t,
94		VersionInfo{Kernel: 3, Major: 8, Minor: 0},
95		VersionInfo{Kernel: 3, Major: 8, Minor: 20},
96		-1)
97}
98