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test: startup order and critical network hold patterns (12 tests)
Tests the setMode-before-setRpc ordering that caused the 15-min burst sync delay bug. Also tests network hold stacking, HTLC safety margins vs burst intervals, and hold patterns for send/receive/channel operations.
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‎app/src/test/java/com/pocketnode/power/StartupOrderTest.kt‎

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package com.pocketnode.power
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import org.junit.Assert.*
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import org.junit.Test
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/**
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* Tests for startup order and critical hold patterns.
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*
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* Bug context: setRpc() was called before setMode() in BitcoindService startup.
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* setRpc() checks activeScope (set by setMode()) and returns early if null.
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* This meant burst cycling never started on cold boot — network stayed fully
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* open for ~15 min until a UI screen called setRpc() again.
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*
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* Fixed by swapping the order: setMode() first (sets scope), then setRpc().
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*/
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class StartupOrderTest {
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// ── Startup Sequence ─────────────────────────────────────────────
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@Test
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fun `setRpc requires activeScope - returns early if null`() {
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// Simulates the bug: setRpc() called before setMode()
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var activeScope: Any? = null
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var burstStarted = false
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// setRpc logic: checks activeScope
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fun setRpc() {
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val mode = PowerModeManager.Mode.LOW
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val burstActive = false
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val initialSyncHold = false
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if (mode != PowerModeManager.Mode.MAX && !burstActive && !initialSyncHold) {
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val scope = activeScope ?: return // <-- returns early if null
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burstStarted = true
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}
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}
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setRpc()
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assertFalse("Burst should NOT start when activeScope is null", burstStarted)
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}
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@Test
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fun `setMode then setRpc - correct order starts burst`() {
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var activeScope: Any? = null
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var burstStarted = false
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// setMode sets the scope
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fun setMode() {
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activeScope = Object() // non-null scope
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}
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// setRpc checks the scope
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fun setRpc() {
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val mode = PowerModeManager.Mode.LOW
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val burstActive = false
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val initialSyncHold = false
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if (mode != PowerModeManager.Mode.MAX && !burstActive && !initialSyncHold) {
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val scope = activeScope ?: return
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burstStarted = true
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}
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}
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setMode() // FIRST: sets activeScope
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setRpc() // SECOND: checks activeScope, starts burst
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assertTrue("Burst SHOULD start when setMode() called first", burstStarted)
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}
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@Test
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fun `wrong order - setRpc then setMode - burst never starts from setRpc`() {
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var activeScope: Any? = null
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var burstStartedFromSetRpc = false
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var burstStartedFromSetMode = false
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fun setRpc() {
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val mode = PowerModeManager.Mode.LOW
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val burstActive = false
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val initialSyncHold = false
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if (mode != PowerModeManager.Mode.MAX && !burstActive && !initialSyncHold) {
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val scope = activeScope ?: return
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burstStartedFromSetRpc = true
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}
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}
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fun setMode() {
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activeScope = Object()
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// setMode calls applyMode which also starts burst,
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// but the RPC client might not be ready yet
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burstStartedFromSetMode = true
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}
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setRpc() // WRONG ORDER: activeScope still null
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setMode() // Sets scope but burst needs RPC
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assertFalse("setRpc should have returned early", burstStartedFromSetRpc)
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assertTrue("setMode starts its own burst path", burstStartedFromSetMode)
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}
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// ── Both Startup Paths ───────────────────────────────────────────
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@Test
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fun `cold start path follows correct order`() {
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// Verify the pattern from BitcoindService.startBitcoind()
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// Line 251-252 (after fix):
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// pmm.setMode(modeFlow.value, serviceScope) // FIRST
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// pmm.setRpc(rpc) // SECOND
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val steps = mutableListOf<String>()
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steps.add("start_bitcoind")
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steps.add("create_rpc_client")
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steps.add("start_monitors")
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steps.add("setMode") // Sets activeScope
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steps.add("setRpc") // Checks activeScope, starts burst
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val setModeIdx = steps.indexOf("setMode")
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val setRpcIdx = steps.indexOf("setRpc")
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assertTrue("setMode must come before setRpc", setModeIdx < setRpcIdx)
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}
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@Test
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fun `attach path follows correct order`() {
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// Verify the pattern from BitcoindService attach-to-running path
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val steps = mutableListOf<String>()
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steps.add("detect_running_bitcoind")
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steps.add("rpc_health_check")
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steps.add("start_monitors")
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steps.add("setMode")
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steps.add("setRpc")
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val setModeIdx = steps.indexOf("setMode")
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val setRpcIdx = steps.indexOf("setRpc")
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assertTrue("setMode must come before setRpc (attach path)", setModeIdx < setRpcIdx)
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}
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// ── Network Hold for Lightning Operations ────────────────────────
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@Test
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fun `receive hold pattern - acquire before generate, release after timeout or receive`() {
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var holdCount = 0
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var invoiceGenerated = false
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var paymentReceived = false
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// Generate invoice on non-MAX mode
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val mode = PowerModeManager.Mode.LOW
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if (mode != PowerModeManager.Mode.MAX) {
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holdCount++
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}
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assertEquals("Hold acquired for receive", 1, holdCount)
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invoiceGenerated = true
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assertTrue("Invoice generated while hold active", invoiceGenerated)
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// Simulate payment received
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paymentReceived = true
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if (paymentReceived) {
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holdCount--
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}
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assertEquals("Hold released after receive", 0, holdCount)
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}
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@Test
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fun `send hold pattern - acquire on screen entry, release on exit`() {
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var holdCount = 0
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// Enter send screen
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val mode = PowerModeManager.Mode.LOW
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if (mode != PowerModeManager.Mode.MAX) {
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holdCount++
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}
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assertEquals(1, holdCount)
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// Payment completes, screen exits
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holdCount--
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assertEquals("Hold released on exit", 0, holdCount)
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}
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@Test
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fun `channel open hold pattern - acquire, wait for confirmed, release after buffer`() {
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var holdCount = 0
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var channelReady = false
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// Start channel open
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holdCount++
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assertEquals(1, holdCount)
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// Channel confirmed
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channelReady = true
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// 10s buffer then release
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if (channelReady) {
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holdCount--
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}
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assertEquals("Hold released after channel ready + buffer", 0, holdCount)
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}
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@Test
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fun `MAX mode skips all holds`() {
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var holdCount = 0
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val mode = PowerModeManager.Mode.MAX
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// Receive flow
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if (mode != PowerModeManager.Mode.MAX) {
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holdCount++
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}
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assertEquals("MAX mode should not acquire hold", 0, holdCount)
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// Send flow
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if (mode != PowerModeManager.Mode.MAX) {
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holdCount++
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}
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assertEquals("MAX mode should not acquire hold", 0, holdCount)
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}
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@Test
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fun `overlapping holds stack correctly`() {
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var holdCount = 0
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// User opens receive screen (hold 1)
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holdCount++
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assertEquals(1, holdCount)
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// While waiting, user also triggers channel operation (hold 2)
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holdCount++
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assertEquals(2, holdCount)
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// Receive completes (release 1)
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holdCount--
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assertEquals(1, holdCount)
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assertTrue("Network still held for channel op", holdCount > 0)
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// Channel op completes (release 2)
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holdCount--
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assertEquals(0, holdCount)
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assertFalse("All holds released", holdCount > 0)
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}
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// ── HTLC Safety Margin ───────────────────────────────────────────
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@Test
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fun `CLTV safety buffers provide adequate margin`() {
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// From rust-lightning channelmonitor.rs
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val maxBlocksForConf = 18 // ~3 hours
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val cltvClaimBuffer = maxBlocksForConf * 2 // 36 blocks, ~6 hours
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val latencyGracePeriod = 3 // ~30 minutes
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val htlcFailBackBuffer = cltvClaimBuffer + latencyGracePeriod // 39 blocks
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assertEquals(36, cltvClaimBuffer)
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assertEquals(39, htlcFailBackBuffer)
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// Burst sync worst case: 15 min interval + 2 min sync = 17 min
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// In blocks: ~1.7 blocks. Well within 36-block buffer.
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val burstIntervalMin = 15
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val burstSyncTimeoutMin = 2
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val worstCaseMinutes = burstIntervalMin + burstSyncTimeoutMin
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val worstCaseBlocks = worstCaseMinutes.toDouble() / 10 // ~10 min per block
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assertTrue("Burst worst case ($worstCaseBlocks blocks) within CLTV buffer ($cltvClaimBuffer blocks)",
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worstCaseBlocks < cltvClaimBuffer)
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}
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@Test
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fun `chain polling interval sufficient for HTLC safety`() {
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// LDK-node polls bitcoind RPC every 2 seconds
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val chainPollingIntervalSecs = 2
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// Even if we miss a few polls, 36 blocks = ~360 minutes of buffer
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val cltvBufferMinutes = 36 * 10 // ~360 minutes
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assertTrue("2s polling is way faster than needed for $cltvBufferMinutes min buffer",
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chainPollingIntervalSecs < cltvBufferMinutes * 60)
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}
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}

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