app: core-measurement — the measurement-schema.md document model

Pure Kotlin/JVM, faithful to the schema contract: two-clock (wall RFC3339 +
*_mono_ns), units in field names, observation/interpretation split
(tests[] vs findings[]), columnar train evidence (nulls preserved per
index), the full v1 test-type registry, the anonymization logical types as
field notes, and a finding-requires-evidence invariant.

The one piece with real logic — §7.3 deterministic verdict derivation
(category = worst finding light; >50% failed/unsupported → inconclusive;
overall = worst category, inconclusive only if all are) — is implemented
in Verdicts and fully unit-tested. Document JSON round-trips (snake_case
wire names, null-in-columns), typed builders for train/traceroute/resolver
evidence.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
mrambossek
2026-07-31 21:24:20 +02:00
co-authored by Claude Opus 5
parent 3520eabd21
commit 1f8860f7f8
10 changed files with 815 additions and 0 deletions
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// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
plugins {
alias(libs.plugins.kotlin.jvm)
alias(libs.plugins.kotlin.serialization)
}
// Pure Kotlin/JVM: the client half of probe-protocol.md. No Android deps, so
// the Android app modules can depend on it and it stays unit-testable (incl.
// live integration tests) on any JDK. Crypto, HTTP and UDP come from the JDK
// (javax.crypto, java.net.http, java.net) — only JSON needs a library.
dependencies {
implementation(libs.kotlinx.serialization.json)
testImplementation(kotlin("test"))
}
kotlin {
// Build with the available JDK (Android Studio's JBR is 21) but emit
// Java-17 bytecode so the Android app modules can consume this library.
jvmToolchain(21)
compilerOptions {
jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
}
}
java {
sourceCompatibility = JavaVersion.VERSION_17
targetCompatibility = JavaVersion.VERSION_17
}
tasks.test {
useJUnitPlatform()
}
@@ -0,0 +1,100 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
// Package measurement models one measurement run (measurement-schema.md) — the archived,
// diffable, exportable unit. Design rules honored in the types: observation/interpretation
// separated (tests[] vs findings[]), two clocks (wall RFC3339 for humans, *_mono_ns for math),
// units in field names, columnar trains. params/evidence/metrics are per-test-type, so they are
// carried as JsonObject (the probe engine fills them; consumers ignore unknown fields).
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonObject
@Serializable
data class MeasurementDocument(
val schema: String = "echolot/measurement",
@SerialName("schema_version") val schemaVersion: String = "1.0.0",
val run: Run,
val networks: List<Network> = emptyList(),
@SerialName("server_sessions") val serverSessions: List<ServerSession> = emptyList(),
val tests: List<Test> = emptyList(),
val findings: List<Finding> = emptyList(),
val summary: Summary? = null,
)
@Serializable
data class Run(
val id: String, // UUIDv7
val trigger: Trigger,
@SerialName("started_at") val startedAt: String, // RFC3339 UTC, human correlation only
@SerialName("ended_at") val endedAt: String? = null,
val clock: Clock,
val app: AppInfo,
val device: DeviceInfo,
val tiers: Tiers,
@SerialName("profiles_used") val profilesUsed: List<String> = emptyList(),
val notes: String? = null,
)
@Serializable
enum class Trigger {
@SerialName("manual") MANUAL,
@SerialName("scheduled") SCHEDULED,
@SerialName("monitor") MONITOR,
@SerialName("peer") PEER,
}
/** The two-clock anchor: mono_origin_wall maps the monotonic epoch to a wall time for humans;
* all math uses *_mono_ns relative to that monotonic origin. */
@Serializable
data class Clock(
@SerialName("mono_origin_wall") val monoOriginWall: String,
@SerialName("ntp_offset_ms") val ntpOffsetMs: Double? = null,
@SerialName("ntp_offset_source") val ntpOffsetSource: String? = null,
)
@Serializable
data class AppInfo(
val version: String,
val build: Int,
val git: String? = null,
val flavor: String? = null,
)
@Serializable
data class DeviceInfo(
val manufacturer: String,
val model: String,
@SerialName("android_sdk") val androidSdk: Int,
@SerialName("android_release") val androidRelease: String,
@SerialName("security_patch") val securityPatch: String? = null,
)
/** What each tier was *available*; each test records what it *used*. */
@Serializable
data class Tiers(
val app: Boolean = true,
val shizuku: Boolean = false,
val root: Boolean = false,
)
@Serializable
data class ServerSession(
val id: String,
@SerialName("profile_id") val profileId: String? = null,
@SerialName("profile_name") val profileName: String? = null,
@SerialName("control_url") val controlUrl: String,
@SerialName("server_version") val serverVersion: String? = null,
val capabilities: List<String> = emptyList(),
@SerialName("session_id") val sessionId: String,
val target: SessionTarget,
)
@Serializable
data class SessionTarget(
val ip4: String? = null,
val ip6: String? = null,
@SerialName("udp_port") val udpPort: Int = 0,
)
@@ -0,0 +1,85 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.Json
import kotlinx.serialization.json.JsonObject
import kotlinx.serialization.json.encodeToJsonElement
/**
* Typed builders for the per-test-type evidence shapes the schema fixes (§6.2/§6.3/§6.4). Probe
* code fills these and folds them into [Test.evidence] via [toEvidence]; keeping them typed here
* means the columnar/traceroute/resolver contracts live in one place.
*/
@PublishedApi
internal val evidenceJson = Json { encodeDefaults = true; explicitNulls = true }
/** Serialize any typed evidence object into the JsonObject the Test envelope carries. */
inline fun <reified T> T.toEvidence(): JsonObject =
evidenceJson.encodeToJsonElement(this) as JsonObject
/**
* Packet-train evidence (§6.2): columnar parallel arrays, one index per probe packet. Missing
* observations are null at that index — a 10k-packet train stays in the hundreds of kB. Server
* columns use the server session epoch; only differences within one clock are meaningful unless a
* time.server_offset test maps them.
*/
@Serializable
data class TrainEvidence(
@SerialName("epoch_mono_ns") val epochMonoNs: Long,
val seq: List<Int>,
@SerialName("t_tx_ns") val tTxNs: List<Long?>,
@SerialName("t_srv_rx_ns") val tSrvRxNs: List<Long?> = emptyList(),
@SerialName("t_srv_tx_ns") val tSrvTxNs: List<Long?> = emptyList(),
@SerialName("t_rx_ns") val tRxNs: List<Long?>,
@SerialName("size_bytes") val sizeBytes: List<Int>,
@SerialName("dscp_sent") val dscpSent: Int? = null,
@SerialName("dscp_seen_by_server") val dscpSeenByServer: List<Int?> = emptyList(),
@SerialName("ecn_sent") val ecnSent: Int? = null,
@SerialName("ecn_seen_by_server") val ecnSeenByServer: List<Int?> = emptyList(),
@SerialName("ttl_seen_by_server") val ttlSeenByServer: List<Int?> = emptyList(),
@SerialName("evidence_truncated") val evidenceTruncated: Boolean = false,
)
/** Traceroute evidence (§6.3): fixed-tuple flow + per-TTL probe replies. */
@Serializable
data class TracerouteEvidence(val flow: Flow, val hops: List<Hop>)
@Serializable
data class Flow(
@SerialName("src_port") val srcPort: Int,
@SerialName("dst_port") val dstPort: Int,
@SerialName("fixed_tuple") val fixedTuple: Boolean = true,
)
@Serializable
data class Hop(val ttl: Int, val probes: List<HopProbe>)
@Serializable
data class HopProbe(
@SerialName("reply_from") val replyFrom: String? = null,
@SerialName("rtt_ns") val rttNs: Long? = null,
val icmp: String? = null,
@SerialName("reply_ttl") val replyTtl: Int? = null,
)
/** Resolver under test (§6.4); every dns.* test carries this in params. */
@Serializable
data class ResolverSpec(
val source: ResolverSource,
val address: String? = null,
val port: Int = 53,
val transport: String, // do53-udp | do53-tcp | dot | doh
@SerialName("doh_url") val dohUrl: String? = null,
)
@Serializable
enum class ResolverSource {
@SerialName("system") SYSTEM,
@SerialName("manual") MANUAL,
@SerialName("server-recursive") SERVER_RECURSIVE,
}
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// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
/** Interpretation with references back to evidence (measurement-schema.md §7.1). A finding with
* no evidence_refs is invalid — every finding must be re-derivable from the evidence alone. */
@Serializable
data class Finding(
val id: String, // UUIDv7
val code: String, // stable registry (findings-registry.md), lint-rule style
val category: Category,
val severity: Severity,
val confidence: Confidence,
@SerialName("network_ref") val networkRef: String? = null,
val title: String,
val description: String,
@SerialName("evidence_refs") val evidenceRefs: List<EvidenceRef>,
val recommendation: String? = null,
) {
init {
require(evidenceRefs.isNotEmpty()) { "a finding must reference at least one piece of evidence" }
}
}
@Serializable
data class EvidenceRef(val test: String, val pointer: String? = null)
/** Fixed §7.2 categories; each maps to one traffic light. */
@Serializable
enum class Category {
@SerialName("connectivity") CONNECTIVITY,
@SerialName("dns") DNS,
@SerialName("nat") NAT,
@SerialName("mtu") MTU,
@SerialName("ipv6") IPV6,
@SerialName("security") SECURITY,
@SerialName("performance") PERFORMANCE,
@SerialName("local") LOCAL,
@SerialName("wifi") WIFI,
}
/** Ordered worst→best via [rank]; drives the §7.3 light mapping. */
@Serializable
enum class Severity(val rank: Int) {
@SerialName("critical") CRITICAL(4),
@SerialName("high") HIGH(3),
@SerialName("medium") MEDIUM(2),
@SerialName("low") LOW(1),
@SerialName("info") INFO(0);
/** §7.3: critical|high → red, medium|low → yellow, info → green. */
fun toLight(): Verdict = when (this) {
CRITICAL, HIGH -> Verdict.RED
MEDIUM, LOW -> Verdict.YELLOW
INFO -> Verdict.GREEN
}
}
@Serializable
enum class Confidence {
@SerialName("high") HIGH,
@SerialName("medium") MEDIUM,
@SerialName("low") LOW,
}
@@ -0,0 +1,113 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonObject
/** One Android Network in play (measurement-schema.md §4). Shizuku-tier fields (route proto,
* lifetimes) are absent at app tier — absence means "not observed", never "not present". */
@Serializable
data class Network(
val id: String,
val transport: Transport,
@SerialName("interface") val iface: String? = null,
val link: Link,
val wifi: Wifi? = null,
val cellular: Cellular? = null,
val changes: List<NetworkChange> = emptyList(),
)
@Serializable
enum class Transport {
@SerialName("wifi") WIFI,
@SerialName("cellular") CELLULAR,
@SerialName("ethernet") ETHERNET,
@SerialName("vpn") VPN,
@SerialName("other") OTHER,
}
@Serializable
data class Link(
val mtu: Int? = null,
val addresses: List<Address> = emptyList(),
val routes: List<Route> = emptyList(),
val dns: DnsConfig? = null,
val dhcp: Dhcp? = null,
@SerialName("captive_portal") val captivePortal: CaptivePortal? = null,
)
@Serializable
data class Address(
val addr: String, // ip4 | ip6 (logical type, §8)
@SerialName("prefix_len") val prefixLen: Int,
val scope: String? = null,
val flags: List<String> = emptyList(),
@SerialName("valid_lft_s") val validLftS: Long? = null,
@SerialName("pref_lft_s") val prefLftS: Long? = null,
)
@Serializable
data class Route(
val dst: String,
val gateway: String? = null,
val iface: String? = null,
val proto: RouteProto? = null, // shizuku tier; null = not observed
@SerialName("expires_s") val expiresS: Long? = null,
)
@Serializable
enum class RouteProto {
@SerialName("dhcp") DHCP,
@SerialName("ra") RA,
@SerialName("static") STATIC,
@SerialName("unknown") UNKNOWN,
}
@Serializable
data class DnsConfig(
val servers: List<String> = emptyList(),
@SerialName("private_dns_mode") val privateDnsMode: String? = null,
@SerialName("private_dns_hostname") val privateDnsHostname: String? = null,
@SerialName("search_domains") val searchDomains: List<String> = emptyList(),
@SerialName("nat64_prefix") val nat64Prefix: String? = null,
)
@Serializable
data class Dhcp(val server: String? = null, @SerialName("lease_s") val leaseS: Long? = null)
@Serializable
data class CaptivePortal(
val detected: Boolean = false,
@SerialName("api_url") val apiUrl: String? = null,
@SerialName("venue_url") val venueUrl: String? = null,
)
@Serializable
data class Wifi(
val ssid: String? = null, // ssid (logical type)
val bssid: String? = null, // bssid (logical type)
@SerialName("rssi_dbm") val rssiDbm: Int? = null,
@SerialName("link_speed_mbps") val linkSpeedMbps: Int? = null,
@SerialName("frequency_mhz") val frequencyMhz: Int? = null,
@SerialName("channel_width_mhz") val channelWidthMhz: Int? = null,
val standard: String? = null,
val security: String? = null,
@SerialName("mac_randomization") val macRandomization: Boolean? = null,
)
@Serializable
data class Cellular(
val rat: String? = null,
val operator: String? = null,
val band: String? = null,
)
@Serializable
data class NetworkChange(
@SerialName("at_mono_ns") val atMonoNs: Long,
val kind: String, // lost | gained | link_changed
val detail: JsonObject? = null,
)
@@ -0,0 +1,90 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
@Serializable
enum class Verdict {
@SerialName("green") GREEN,
@SerialName("yellow") YELLOW,
@SerialName("red") RED,
@SerialName("inconclusive") INCONCLUSIVE,
}
@Serializable
data class Summary(
val overall: Verdict,
val categories: Map<String, CategorySummary>,
)
@Serializable
data class CategorySummary(
val verdict: Verdict,
@SerialName("worst_finding") val worstFinding: String? = null,
@SerialName("tests_run") val testsRun: Int,
@SerialName("tests_failed") val testsFailed: Int,
)
/**
* Deterministic verdict derivation, fixed by measurement-schema.md §7.3:
*
* - A category's verdict = the light of its worst-severity finding
* (critical|high → red, medium|low → yellow, info/none → green).
* - A category is `inconclusive` when > 50% of its tests are failed/unsupported.
* - Overall = the worst category light; `inconclusive` only when ALL categories are.
*
* The mapping test-type → category comes from [TestType.category]. Only categories that have
* findings or tests appear in the summary.
*/
object Verdicts {
private fun isInconclusiveTest(s: TestStatus) =
s == TestStatus.FAILED || s == TestStatus.UNSUPPORTED
fun derive(tests: List<Test>, findings: List<Finding>): Summary {
val testsByCat = tests.groupBy { TestType.category(it.type) }
val findingsByCat = findings.groupBy { it.category }
val categories = (testsByCat.keys + findingsByCat.keys)
val perCat = LinkedHashMap<String, CategorySummary>()
for (cat in Category.entries) {
if (cat !in categories) continue
val catTests = testsByCat[cat].orEmpty()
val catFindings = findingsByCat[cat].orEmpty()
val failed = catTests.count { isInconclusiveTest(it.status) }
val inconclusive = catTests.isNotEmpty() && failed * 2 > catTests.size
val worst = catFindings.maxByOrNull { it.severity.rank }
val verdict = when {
inconclusive -> Verdict.INCONCLUSIVE
worst == null -> Verdict.GREEN
else -> worst.severity.toLight()
}
perCat[serialName(cat)] = CategorySummary(
verdict = verdict,
worstFinding = worst?.id,
testsRun = catTests.size,
testsFailed = failed,
)
}
val overall = deriveOverall(perCat.values)
return Summary(overall = overall, categories = perCat)
}
/** Overall = worst light; inconclusive only if every category is inconclusive. */
private fun deriveOverall(cats: Collection<CategorySummary>): Verdict {
if (cats.isEmpty()) return Verdict.INCONCLUSIVE
if (cats.all { it.verdict == Verdict.INCONCLUSIVE }) return Verdict.INCONCLUSIVE
val rank = mapOf(Verdict.GREEN to 0, Verdict.YELLOW to 1, Verdict.RED to 2)
// Non-inconclusive categories decide the overall light.
return cats.filter { it.verdict != Verdict.INCONCLUSIVE }
.maxByOrNull { rank.getValue(it.verdict) }!!.verdict
}
private fun serialName(cat: Category): String = cat.name.lowercase()
}
@@ -0,0 +1,145 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonObject
/** The generic test envelope (measurement-schema.md §6). params must fully reproduce the test;
* evidence is append-only raw truth; metrics must be recomputable from evidence. All three are
* per-test-type JSON, so they are carried as JsonObject. */
@Serializable
data class Test(
val id: String, // UUIDv7
val type: String, // TestType registry (§6.1)
@SerialName("network_ref") val networkRef: String? = null,
@SerialName("session_ref") val sessionRef: String? = null, // null for local-only tests
val tier: Tier,
@SerialName("started_mono_ns") val startedMonoNs: Long,
@SerialName("ended_mono_ns") val endedMonoNs: Long,
val status: TestStatus,
val error: TestError? = null,
val params: JsonObject? = null,
val evidence: JsonObject? = null,
val metrics: JsonObject? = null,
)
@Serializable
enum class Tier {
@SerialName("app") APP,
@SerialName("shizuku") SHIZUKU,
@SerialName("root") ROOT,
}
@Serializable
enum class TestStatus {
@SerialName("ok") OK,
@SerialName("failed") FAILED,
@SerialName("unsupported") UNSUPPORTED,
@SerialName("skipped") SKIPPED,
@SerialName("partial") PARTIAL,
}
@Serializable
data class TestError(val code: String, val detail: String? = null)
/**
* The v1 test-type registry (§6.1). String constants (dotted, family-first) so probe code and the
* server's measurement-schema test-type registry stay aligned. [category] maps a type to one of
* the fixed §7.2 categories for verdict rollup.
*/
object TestType {
// link
const val LINK_SNAPSHOT = "link.snapshot"
const val LINK_DHCP_RENEWAL_WATCH = "link.dhcp_renewal_watch"
const val LINK_IP_MONITOR = "link.ip_monitor"
// icmp
const val ICMP_PING4 = "icmp.ping4"
const val ICMP_PING6 = "icmp.ping6"
// trace
const val TRACEROUTE_UDP4 = "traceroute.udp4"
const val TRACEROUTE_UDP6 = "traceroute.udp6"
const val TRACEROUTE_ICMP4 = "traceroute.icmp4"
const val TRACEROUTE_ICMP6 = "traceroute.icmp6"
// train
const val TRAIN_UDP_UPDOWN = "train.udp_updown"
// mtu
const val MTU_PMTUD_UP = "mtu.pmtud_up"
const val MTU_PMTUD_DOWN = "mtu.pmtud_down"
const val MTU_BLACKHOLE = "mtu.blackhole"
const val MTU_MSS_OBSERVED = "mtu.mss_observed"
const val MTU_FRAG_DELIVERY = "mtu.frag_delivery"
// nat
const val NAT_STUN_5780 = "nat.stun_5780"
const val NAT_MAPPING_LIFETIME_UDP = "nat.mapping_lifetime_udp"
const val NAT_MAPPING_LIFETIME_TCP = "nat.mapping_lifetime_tcp"
const val NAT_HAIRPIN = "nat.hairpin"
const val NAT_CONNECT_BACK = "nat.connect_back"
const val NAT_CGNAT_DETECT = "nat.cgnat_detect"
// dns
const val DNS_RESOLVER_INVENTORY = "dns.resolver_inventory"
const val DNS_CANARY = "dns.canary"
const val DNS_INTERCEPTION = "dns.interception"
const val DNS_TTL_INTEGRITY = "dns.ttl_integrity"
const val DNS_ANSWER_INTEGRITY = "dns.answer_integrity"
const val DNS_DNSSEC = "dns.dnssec"
const val DNS_NXDOMAIN_WILDCARD = "dns.nxdomain_wildcard"
const val DNS_REBIND_FILTER = "dns.rebind_filter"
const val DNS_AAAA_FILTER = "dns.aaaa_filter"
const val DNS_DNS64 = "dns.dns64"
const val DNS_COMPARE = "dns.compare"
// sec
const val SEC_TLS_REFERENCE = "sec.tls_reference"
const val SEC_CLIENTHELLO_ECHO = "sec.clienthello_echo"
const val SEC_HTTP_ECHO = "sec.http_echo"
const val SEC_SNI_FILTER = "sec.sni_filter"
const val SEC_DSCP_ECN_SURVIVAL = "sec.dscp_ecn_survival"
const val SEC_ARP_WATCH = "sec.arp_watch"
// port
const val PORT_REACH_SWEEP = "port.reach_sweep"
const val PORT_UDP_USABILITY = "port.udp_usability"
// perf
const val PERF_THROUGHPUT_TCP = "perf.throughput_tcp"
const val PERF_THROUGHPUT_UDP = "perf.throughput_udp"
const val PERF_BUFFERBLOAT = "perf.bufferbloat"
const val PERF_RRC_LATENCY = "perf.rrc_latency"
// v6
const val V6_DUALSTACK_COMPARE = "v6.dualstack_compare"
const val V6_HAPPY_EYEBALLS = "v6.happy_eyeballs"
const val V6_BROKENNESS = "v6.brokenness"
const val V6_NAT64_CLAT = "v6.nat64_clat"
// wifi
const val WIFI_ENVIRONMENT_SCAN = "wifi.environment_scan"
const val WIFI_ROAM_LOG = "wifi.roam_log"
const val WIFI_SIGNAL_LOG = "wifi.signal_log"
// local
const val LOCAL_MDNS_INVENTORY = "local.mdns_inventory"
const val LOCAL_SSDP_INVENTORY = "local.ssdp_inventory"
const val LOCAL_LLMNR_INVENTORY = "local.llmnr_inventory"
const val LOCAL_GATEWAY_SERVICES = "local.gateway_services"
const val LOCAL_NTP = "local.ntp"
// peer
const val PEER_REACHABILITY = "peer.reachability"
const val PEER_ISOLATION = "peer.isolation"
const val PEER_MULTICAST = "peer.multicast"
const val PEER_LAN_TRAIN = "peer.lan_train"
const val PEER_LEASE_DIFF = "peer.lease_diff"
// time
const val TIME_SERVER_OFFSET = "time.server_offset"
/** Maps a dotted test type to its §7.2 category for verdict rollup. */
fun category(type: String): Category = when (type.substringBefore('.')) {
"link", "icmp", "trace", "traceroute", "train", "port", "time" -> Category.CONNECTIVITY
"dns" -> Category.DNS
"nat" -> Category.NAT
"mtu" -> Category.MTU
"v6" -> Category.IPV6
"sec" -> Category.SECURITY
"perf" -> Category.PERFORMANCE
"local", "peer" -> Category.LOCAL
"wifi" -> Category.WIFI
else -> Category.CONNECTIVITY
}
}
@@ -0,0 +1,71 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlinx.serialization.json.Json
import kotlin.test.Test as JTest
import kotlin.test.assertEquals
import kotlin.test.assertTrue
class SerializationTest {
private val json = Json { ignoreUnknownKeys = true; encodeDefaults = true }
@JTest
fun documentRoundTrips() {
val doc = MeasurementDocument(
run = Run(
id = "0198c5f2-0000-7000-8000-000000000000",
trigger = Trigger.MANUAL,
startedAt = "2026-07-31T14:03:21.114Z",
clock = Clock(monoOriginWall = "2026-07-31T14:03:21.114Z"),
app = AppInfo(version = "0.1.0", build = 1),
device = DeviceInfo("OnePlus", "CPH2747", 36, "16"),
tiers = Tiers(app = true, shizuku = true),
),
networks = listOf(
Network(
id = "net-1", transport = Transport.WIFI, iface = "wlan0",
link = Link(mtu = 1500, addresses = listOf(Address("192.0.2.23", 24, "global"))),
wifi = Wifi(ssid = "example", rssiDbm = -54),
),
),
tests = listOf(
Test(
id = "t-1", type = TestType.ICMP_PING4, networkRef = "net-1", tier = Tier.APP,
startedMonoNs = 0, endedMonoNs = 38_000_000, status = TestStatus.OK,
evidence = TrainEvidence(
epochMonoNs = 0, seq = listOf(0, 1), tTxNs = listOf(0L, 20_000_000L),
tRxNs = listOf(16_500_000L, null), sizeBytes = listOf(64, 64),
).toEvidence(),
),
),
)
val encoded = json.encodeToString(MeasurementDocument.serializer(), doc)
val decoded = json.decodeFromString(MeasurementDocument.serializer(), encoded)
assertEquals(doc.run.id, decoded.run.id)
assertEquals(Transport.WIFI, decoded.networks[0].transport)
assertEquals(TestType.ICMP_PING4, decoded.tests[0].type)
// snake_case field names on the wire
assertTrue(encoded.contains("\"schema_version\""))
assertTrue(encoded.contains("\"mono_origin_wall\""))
assertTrue(encoded.contains("\"t_tx_ns\""))
// null preserved at train index 1
assertTrue(encoded.contains("[16500000,null]"))
}
@JTest
fun findingRequiresEvidence() {
try {
Finding(
id = "f-1", code = "x", category = Category.DNS, severity = Severity.INFO,
confidence = Confidence.LOW, title = "t", description = "d", evidenceRefs = emptyList(),
)
throw AssertionError("expected IllegalArgumentException for empty evidence_refs")
} catch (e: IllegalArgumentException) {
// expected — a finding with no evidence is invalid (§7.1)
}
}
}
@@ -0,0 +1,109 @@
// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
package app.echo_lot.measurement
import kotlin.test.Test as JTest
import kotlin.test.assertEquals
class VerdictsTest {
private fun test(type: String, status: TestStatus, id: String = type): Test =
Test(id = id, type = type, tier = Tier.APP, startedMonoNs = 0, endedMonoNs = 1, status = status)
private fun finding(cat: Category, sev: Severity, id: String = "f-$cat-$sev"): Finding =
Finding(
id = id, code = "x.$cat", category = cat, severity = sev, confidence = Confidence.HIGH,
title = "t", description = "d", evidenceRefs = listOf(EvidenceRef("some-test")),
)
@JTest
fun categoryLightFromWorstSeverity() {
val tests = listOf(test(TestType.DNS_CANARY, TestStatus.OK))
val findings = listOf(
finding(Category.DNS, Severity.LOW),
finding(Category.DNS, Severity.HIGH), // worst → red
finding(Category.DNS, Severity.INFO),
)
val s = Verdicts.derive(tests, findings)
assertEquals(Verdict.RED, s.categories["dns"]!!.verdict)
assertEquals("f-DNS-HIGH", s.categories["dns"]!!.worstFinding)
assertEquals(Verdict.RED, s.overall)
}
@JTest
fun noFindingsIsGreen() {
val s = Verdicts.derive(listOf(test(TestType.MTU_BLACKHOLE, TestStatus.OK)), emptyList())
assertEquals(Verdict.GREEN, s.categories["mtu"]!!.verdict)
assertEquals(Verdict.GREEN, s.overall)
}
@JTest
fun mediumAndLowAreYellow() {
val s = Verdicts.derive(
listOf(test(TestType.SEC_HTTP_ECHO, TestStatus.OK)),
listOf(finding(Category.SECURITY, Severity.MEDIUM)),
)
assertEquals(Verdict.YELLOW, s.categories["security"]!!.verdict)
}
@JTest
fun majorityFailedIsInconclusive() {
// 2 of 3 dns tests failed → > 50% → inconclusive, even with a finding present.
val tests = listOf(
test(TestType.DNS_CANARY, TestStatus.FAILED, "a"),
test(TestType.DNS_TTL_INTEGRITY, TestStatus.UNSUPPORTED, "b"),
test(TestType.DNS_COMPARE, TestStatus.OK, "c"),
)
val s = Verdicts.derive(tests, listOf(finding(Category.DNS, Severity.HIGH)))
assertEquals(Verdict.INCONCLUSIVE, s.categories["dns"]!!.verdict)
assertEquals(2, s.categories["dns"]!!.testsFailed)
assertEquals(3, s.categories["dns"]!!.testsRun)
}
@JTest
fun exactlyHalfFailedIsNotInconclusive() {
// 1 of 2 failed → not > 50% → the finding decides.
val tests = listOf(
test(TestType.NAT_HAIRPIN, TestStatus.FAILED, "a"),
test(TestType.NAT_CONNECT_BACK, TestStatus.OK, "b"),
)
val s = Verdicts.derive(tests, listOf(finding(Category.NAT, Severity.CRITICAL)))
assertEquals(Verdict.RED, s.categories["nat"]!!.verdict)
}
@JTest
fun overallIsWorstCategory() {
val tests = listOf(
test(TestType.DNS_CANARY, TestStatus.OK, "d"),
test(TestType.MTU_BLACKHOLE, TestStatus.OK, "m"),
)
val findings = listOf(
finding(Category.DNS, Severity.MEDIUM), // yellow
finding(Category.MTU, Severity.CRITICAL), // red
)
val s = Verdicts.derive(tests, findings)
assertEquals(Verdict.RED, s.overall)
}
@JTest
fun overallInconclusiveOnlyWhenAllAre() {
val tests = listOf(
test(TestType.DNS_CANARY, TestStatus.FAILED, "d"), // dns inconclusive
test(TestType.MTU_BLACKHOLE, TestStatus.OK, "m"), // mtu green
)
val s = Verdicts.derive(tests, emptyList())
assertEquals(Verdict.INCONCLUSIVE, s.categories["dns"]!!.verdict)
assertEquals(Verdict.GREEN, s.categories["mtu"]!!.verdict)
assertEquals(Verdict.GREEN, s.overall) // not all inconclusive → mtu decides
}
@JTest
fun categoryMappingCoversFamilies() {
assertEquals(Category.CONNECTIVITY, TestType.category(TestType.TRACEROUTE_UDP4))
assertEquals(Category.IPV6, TestType.category(TestType.V6_BROKENNESS))
assertEquals(Category.LOCAL, TestType.category(TestType.PEER_MULTICAST))
assertEquals(Category.PERFORMANCE, TestType.category(TestType.PERF_BUFFERBLOAT))
assertEquals(Category.CONNECTIVITY, TestType.category(TestType.TIME_SERVER_OFFSET))
}
}