platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/resolver_policy_test.go

@@ -0,0 +1,69 @@
+package app
+
+import "testing"
+
+func TestDomainStateFromScore(t *testing.T) {
+	tests := []struct {
+		score int
+		want  string
+	}{
+		{25, domainStateActive},
+		{10, domainStateStable},
+		{0, domainStateSuspect},
+		{-12, domainStateQuarantine},
+		{-40, domainStateHardQuar},
+	}
+	for _, tc := range tests {
+		if got := domainStateFromScore(tc.score); got != tc.want {
+			t.Fatalf("domainStateFromScore(%d)=%q want=%q", tc.score, got, tc.want)
+		}
+	}
+}
+
+func TestDomainScorePenalty(t *testing.T) {
+	if got := domainScorePenalty(dnsMetrics{NXDomain: 2}); got >= 0 {
+		t.Fatalf("expected negative penalty for confirmed nxdomain, got %d", got)
+	}
+	if got := domainScorePenalty(dnsMetrics{NXDomain: 1}); got >= 0 {
+		t.Fatalf("expected negative penalty for single nxdomain, got %d", got)
+	}
+	if got := domainScorePenalty(dnsMetrics{Timeout: 1}); got >= 0 {
+		t.Fatalf("expected negative penalty for timeout, got %d", got)
+	}
+}
+
+func TestDomainCacheGetStale(t *testing.T) {
+	s := newDomainCacheState()
+	now := 2000
+	s.set("example.com", domainCacheSourceDirect, []string{"1.2.3.4"}, now-100)
+	ips, age, ok := s.getStale("example.com", domainCacheSourceDirect, now, 300)
+	if !ok {
+		t.Fatalf("expected stale entry")
+	}
+	if age != 100 {
+		t.Fatalf("age=%d want=100", age)
+	}
+	if len(ips) != 1 || ips[0] != "1.2.3.4" {
+		t.Fatalf("unexpected ips: %v", ips)
+	}
+	if _, _, ok := s.getStale("example.com", domainCacheSourceDirect, now, 50); ok {
+		t.Fatalf("expected stale miss when maxAge is too small")
+	}
+}
+
+func TestSetErrorWithStatsSetsQuarantine(t *testing.T) {
+	s := newDomainCacheState()
+	now := 3000
+	s.set("bad.example", domainCacheSourceDirect, []string{"2.2.2.2"}, now-10)
+	for i := 0; i < 5; i++ {
+		s.setErrorWithStats("bad.example", domainCacheSourceDirect, dnsMetrics{NXDomain: 2}, now+i)
+	}
+	state, _, ok := s.getQuarantine("bad.example", domainCacheSourceDirect, now+5)
+	if !ok {
+		t.Fatalf("expected quarantine to be set")
+	}
+	if state != domainStateQuarantine && state != domainStateHardQuar {
+		t.Fatalf("unexpected quarantine state: %s", state)
+	}
+}
+