feat: Настройки › Автообновление - clients compare their version with the server's every N and update themselves; the server looks at GitLab every N and, when a newer release is out, offers it to an administrator at login (after the PIN) with «Обновить» and «Отказаться»; the words of a made picture's result are the model's only

internal/agent/autoupdate_test.go

@@ -0,0 +1,78 @@
+package agent
+
+import (
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/x-grk/longpolling-remote-access/internal/proto"
+)
+
+// updates counts what an agent was made to update with.
+type updates struct{ n int }
+
+func (u *updates) do() proto.TaskResult { u.n++; return proto.TaskResult{OK: true} }
+
+// The agent is told, by headers or by the WebSocket's message, how often to
+// compare versions; nothing told, nothing done.
+func TestAutoUpdateIsTold(t *testing.T) {
+	a := New(Config{})
+	if a.autoUpdateOn() {
+		t.Fatal("on with nothing told")
+	}
+	h := http.Header{}
+	h.Set(proto.AutoUpdateHeader, "90")
+	h.Set(proto.ServerVersionHeader, "9.9.9")
+	a.applyUpdateHeaders(h)
+	if m, v := a.updateInfo(); m != 90 || v != "9.9.9" {
+		t.Fatalf("by headers: %d %q", m, v)
+	}
+	a.applyUpdateInfo(0, "9.9.9")
+	if a.autoUpdateOn() {
+		t.Fatal("still on after being told 0")
+	}
+	a.applyUpdateInfo(30, "9.9.9")
+	if m, _ := a.updateInfo(); m != 30 {
+		t.Fatalf("by the message: %d", m)
+	}
+	// Rubbish is not taken for a number.
+	h.Set(proto.AutoUpdateHeader, "soon")
+	a.applyUpdateHeaders(h)
+	if m, _ := a.updateInfo(); m != 0 {
+		t.Fatalf("rubbish: %d", m)
+	}
+}
+
+// When the interval is out the agent looks; it updates only to a newer
+// version of the server's, and tries again the next time if it did not work.
+func TestAutoUpdateTick(t *testing.T) {
+	a := New(Config{})
+	u := &updates{}
+	now := time.Now()
+	a.applyUpdateInfo(60, "9.9.9")
+
+	if !a.autoUpdateTick(now, u.do) || u.n != 1 {
+		t.Fatalf("a newer server: %d updates", u.n)
+	}
+	if a.autoUpdateTick(now.Add(30*time.Minute), u.do) || u.n != 1 {
+		t.Fatalf("before the interval is out: %d updates", u.n)
+	}
+	if !a.autoUpdateTick(now.Add(61*time.Minute), u.do) || u.n != 2 {
+		t.Fatalf("at the next time: %d updates", u.n)
+	}
+
+	// The same, an older one, a build that is not a version: nothing.
+	for _, v := range []string{Version, "0.0.1", "dev", ""} {
+		b := New(Config{})
+		b.applyUpdateInfo(60, v)
+		if b.autoUpdateTick(now, u.do) {
+			t.Fatalf("updated to %q", v)
+		}
+	}
+	// Off: nothing, whatever the server has.
+	c := New(Config{})
+	c.applyUpdateInfo(0, "9.9.9")
+	if c.autoUpdateTick(now, u.do) || u.n != 2 {
+		t.Fatalf("off, yet updated: %d", u.n)
+	}
+}