Node / meshtastic / Meshtastic-Android / files / feature / node / src / jvmTest / kotlin / org / meshtastic / feature / node / metrics / ChartDrawGuardTest.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.feature.node.metrics

Tff7b72import T7ee787androidx.compose.ui.geometry.Rect

Tff7b72import T7ee787androidx.compose.ui.graphics.Canvas

Tff7b72import T7ee787androidx.compose.ui.graphics.ImageBitmap

Tff7b72import T7ee787androidx.compose.ui.graphics.Paint

Tff7b72import T7ee787kotlin.test.Test

Tff7b72import T7ee787kotlin.test.assertEquals

Tff7b72import T7ee787kotlin.test.assertFailsWith

T8b949e/** Covers the save-stack guard around chart drawing (Crashlytics 7744c73d302c0af1676f31f80802d59f). */

Tff7b72class T56d364ChartDrawGuardTest Tb4b4b4{

Tff7b72private Tff7b72fun Td2a8ffnewCanvasTb4b4b4(Tb4b4b4)Tb4b4b4: Te6edf3Canvas Tff7b72= Te6edf3CanvasTb4b4b4(Te6edf3ImageBitmapTb4b4b4(T79c0ff4Tb4b4b4, T79c0ff4Tb4b4b4)Tb4b4b4)

Tf0883e@Test

Tff7b72fun Td2a8ffguardRebalancesLeakedSavesToEntryDepthTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3entryDepth Tff7b72= Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{

Te6edf3canvasTb4b4b4.Te6edf3saveTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3saveLayerTb4b4b4(Te6edf3RectTb4b4b4(T79c0ff0fTb4b4b4, T79c0ff0fTb4b4b4, T79c0ff4fTb4b4b4, T79c0ff4fTb4b4b4)Tb4b4b4, Te6edf3PaintTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Te6edf3assertEqualsTb4b4b4(Te6edf3entryDepthTb4b4b4, Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ffguardSwallowsRestoreUnderflowExceptionTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3entryDepth Tff7b72= Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)

T8b949e// Message thrown by android.graphics.Canvas.restore, the crash this guard exists for.

Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{

Tff7b72throw Te6edf3IllegalStateExceptionTb4b4b4(Ta5d6ff"Ta5d6ffUnderflow in restore - more restores than savesTa5d6ff"Tb4b4b4)

Tb4b4b4}

Te6edf3assertEqualsTb4b4b4(Te6edf3entryDepthTb4b4b4, Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ffguardRethrowsUnrelatedIllegalStateExceptionTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Te6edf3assertFailsWithTff7b72<Te6edf3IllegalStateExceptionTff7b72> Tb4b4b4{ Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{ Te6edf3errorTb4b4b4(Ta5d6ff"Ta5d6ffunrelatedTa5d6ff"Tb4b4b4) Tb4b4b4} Tb4b4b4}

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ffguardRethrowsOtherExceptionTypesTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Te6edf3assertFailsWithTff7b72<Te6edf3IllegalArgumentExceptionTff7b72> Tb4b4b4{

Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{ Tff7b72throw Te6edf3IllegalArgumentExceptionTb4b4b4(Ta5d6ff"Ta5d6ffboomTa5d6ff"Tb4b4b4) Tb4b4b4}

Tb4b4b4}

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ffguardToleratesStackDrivenBelowSnapshotTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3base Tff7b72= Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3saveTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{

T8b949e// Skia silently ignores restores at the stack floor, so this drives the count below the snapshot.

Te6edf3canvasTb4b4b4.Te6edf3restoreTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3restoreTb4b4b4(Tb4b4b4)

Tb4b4b4}

T8b949e// restoreToCount cannot re-raise a popped stack; it must tolerate the deficit without throwing.

Te6edf3assertEqualsTb4b4b4(Te6edf3baseTb4b4b4, Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tf0883e@Test

Tff7b72fun Td2a8ffguardIsNoOpForBalancedDrawingTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3canvas Tff7b72= Te6edf3newCanvasTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3entryDepth Tff7b72= Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3withRestoreUnderflowGuard Tb4b4b4{

Te6edf3canvasTb4b4b4.Te6edf3saveTb4b4b4(Tb4b4b4)

Te6edf3canvasTb4b4b4.Te6edf3restoreTb4b4b4(Tb4b4b4)

Tb4b4b4}

Te6edf3assertEqualsTb4b4b4(Te6edf3entryDepthTb4b4b4, Te6edf3canvasTb4b4b4.Te6edf3platformSaveCountTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tb4b4b4}