| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "testing" |
| 8 | ) |
| 9 | |
| 10 | // plan9aOddHostEnv enables the claim but carries an unrelated line that |
| 11 | // readClaimUnitSettings cannot parse. |
| 12 | var plan9aOddHostEnv = []string{ |
| 13 | "CARLOS_HOST_CLAIM=1\nCARLOS_OTHER=\"unterminated\n", |
| 14 | "CARLOS_HOST_CLAIM=1\nCARLOS_OTHER=a\\\n", |
| 15 | "CARLOS_HOST_CLAIM='1\n", |
| 16 | } |
| 17 | |
| 18 | func plan9aEnabledControl(t *testing.T) []byte { |
| 19 | t.Helper() |
| 20 | legacy, err := unitsFS.ReadFile("units/" + claimControlUnit) |
| 21 | if err != nil { |
| 22 | t.Fatal(err) |
| 23 | } |
| 24 | return claimUnitContent(claimControlUnit, legacy, claimUnitSettings{enabled: true, data: "/data", opt: "/opt/carlos"}) |
| 25 | } |
| 26 | |
| 27 | func plan9aWriteFile(t *testing.T, path string, body []byte) { |
| 28 | t.Helper() |
| 29 | if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil { |
| 30 | t.Fatal(err) |
| 31 | } |
| 32 | if err := os.WriteFile(path, body, 0644); err != nil { |
| 33 | t.Fatal(err) |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | // 6b-N2: system apply on an enabled box leaves the installed control unit |
| 38 | // alone, unrestarted, when host.env cannot be parsed. |
| 39 | func TestPlan9AApplyKeepsEnabledControlUnitOnHostEnvError(t *testing.T) { |
| 40 | for _, env := range plan9aOddHostEnv { |
| 41 | t.Run(env, func(t *testing.T) { |
| 42 | f := newApplyFixture(t, "stable", "v1.0.0") |
| 43 | plan9aWriteFile(t, filepath.Join(f.a.etcDir, "carlos", "host.env"), []byte(env)) |
| 44 | if _, err := readClaimUnitSettings(filepath.Join(f.a.etcDir, "carlos", "host.env")); err == nil { |
| 45 | t.Fatal("precondition: host.env parsed") |
| 46 | } |
| 47 | installed := plan9aEnabledControl(t) |
| 48 | live := filepath.Join(f.a.etcDir, "systemd", "system", claimControlUnit) |
| 49 | plan9aWriteFile(t, live, installed) |
| 50 | stage := t.TempDir() |
| 51 | if err := bootstrap(stage, nil); err != nil { |
| 52 | t.Fatal(err) |
| 53 | } |
| 54 | if err := f.a.installUnits(t.Context(), stage, nil); err != nil { |
| 55 | t.Fatal(err) |
| 56 | } |
| 57 | if got, _ := os.ReadFile(live); !bytes.Equal(got, installed) { |
| 58 | t.Fatalf("enabled control unit flipped:\n%s", got) |
| 59 | } |
| 60 | if f.called("systemctl try-restart " + claimControlUnit) { |
| 61 | t.Fatal("control unit restarted") |
| 62 | } |
| 63 | }) |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | // 6b-N2: the live bootstrap likewise keeps an enabled control unit. |
| 68 | func TestPlan9ABootstrapKeepsEnabledControlUnitOnHostEnvError(t *testing.T) { |
| 69 | for _, env := range plan9aOddHostEnv { |
| 70 | t.Run(env, func(t *testing.T) { |
| 71 | root := t.TempDir() |
| 72 | plan9aWriteFile(t, filepath.Join(root, "etc", "carlos", "host.env"), []byte(env)) |
| 73 | installed := plan9aEnabledControl(t) |
| 74 | live := filepath.Join(root, "etc", "systemd", "system", claimControlUnit) |
| 75 | plan9aWriteFile(t, live, installed) |
| 76 | if err := bootstrap(root, nil); err != nil { |
| 77 | t.Fatal(err) |
| 78 | } |
| 79 | if got, _ := os.ReadFile(live); !bytes.Equal(got, installed) { |
| 80 | t.Fatalf("enabled control unit flipped:\n%s", got) |
| 81 | } |
| 82 | }) |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | // Flag-off stays main's: an installed unit without the claim environment |
| 87 | // is rendered from the template exactly as before, whatever host.env holds. |
| 88 | func TestPlan9AFlagOffControlUnitUnchangedOnHostEnvError(t *testing.T) { |
| 89 | t.Parallel() |
| 90 | legacy, err := unitsFS.ReadFile("units/" + claimControlUnit) |
| 91 | if err != nil { |
| 92 | t.Fatal(err) |
| 93 | } |
| 94 | for name, installed := range map[string][]byte{"absent": nil, "template": legacy, "older": []byte("[Unit]\nDescription=older template\n")} { |
| 95 | t.Run(name, func(t *testing.T) { |
| 96 | f := newApplyFixture(t, "stable", "v1.0.0") |
| 97 | plan9aWriteFile(t, filepath.Join(f.a.etcDir, "carlos", "host.env"), []byte(plan9aOddHostEnv[0])) |
| 98 | live := filepath.Join(f.a.etcDir, "systemd", "system", claimControlUnit) |
| 99 | if installed != nil { |
| 100 | plan9aWriteFile(t, live, installed) |
| 101 | } |
| 102 | stage := t.TempDir() |
| 103 | if err := bootstrap(stage, nil); err != nil { |
| 104 | t.Fatal(err) |
| 105 | } |
| 106 | if err := f.a.installUnits(t.Context(), stage, nil); err != nil { |
| 107 | t.Fatal(err) |
| 108 | } |
| 109 | if got, _ := os.ReadFile(live); !bytes.Equal(got, legacy) { |
| 110 | t.Fatal("flag-off apply did not render main's unit") |
| 111 | } |
| 112 | root := t.TempDir() |
| 113 | plan9aWriteFile(t, filepath.Join(root, "etc", "carlos", "host.env"), []byte(plan9aOddHostEnv[0])) |
| 114 | rootLive := filepath.Join(root, "etc", "systemd", "system", claimControlUnit) |
| 115 | if installed != nil { |
| 116 | plan9aWriteFile(t, rootLive, installed) |
| 117 | } |
| 118 | if err := bootstrap(root, nil); err != nil { |
| 119 | t.Fatal(err) |
| 120 | } |
| 121 | if got, _ := os.ReadFile(rootLive); !bytes.Equal(got, legacy) { |
| 122 | t.Fatal("flag-off bootstrap did not render main's unit") |
| 123 | } |
| 124 | }) |
| 125 | } |
| 126 | } |
| 127 | |
amadan