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Stabilized allocation limit test

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- Prepared tile rejection coverage scales with the heap budget using a small shared fixture
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Brian Neumann-Fopiano committed 2026-10-13 15:09:39 -04:00
1 parent 5b5f3dae89
commit cec9568c9a
1 file changed
+16 -5
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core/src/test/java/art/arcane/iris/generation/hydrology/PreparedHydrologyTileStoreTest.java
+16 -5
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@@ -279,11 +279,22 @@ public class PreparedHydrologyTileStoreTest {
HydrologyTile original = tile();
PreparedHydrologyTileStore store = store();
store.save(original);
HydrologyTile oversized = new HydrologyTile(original.key(), original.worldSeed(),
original.settingsFingerprint(), original.tileSize(), original.nodes(), original.edges(),
original.outlets(), original.courses(), original.regionalCourseIds(), original.cavePlans(),
Collections.nCopies(600_000, original.localDiagnosticCandidates().getFirst()), original.footprint());
assertThrows(IOException.class, () -> store.save(oversized));
long allocationLimit = Math.max(16L * 1024L * 1024L,
Math.min(512L * 1024L * 1024L, Runtime.getRuntime().maxMemory() / 8L));
int pointCount = 4096;
int courseCount = Math.toIntExact(allocationLimit / (256L * pointCount) + 1L);
HydraulicSegment segment = new HydraulicSegment(45L, 44L, HydrologyFeatureType.SURFACE_POOL,
72, 72, 4, 2, false, false, Collections.nCopies(pointCount, new HydrologyPoint(0, 72, 0)),
HydraulicChannelProfile.uniform(4D, 2D));
RiverCourse course = new RiverCourse(44L, RiverCourseType.SURFACE, OptionalLong.of(1L),
OptionalLong.of(2L), "default", 1, List.of(), List.of(segment));
HydrologyOwnerDraft draft = new HydrologyOwnerDraft(original.key(),
new HydrologyCaveCourseFilter.Result(original.nodes(), original.edges(), original.outlets(),
original.courses(), original.cavePlans()), original.localDiagnosticCandidates(), null);
HydrologyTile oversized = original.withResolvedOwner(new CrossTileResolvedOwner(draft,
Collections.nCopies(courseCount, new CrossTileRejectedCourse(course, 4L))));
IOException failure = assertThrows(IOException.class, () -> store.save(oversized));
assertEquals("Prepared hydrology tile exceeds its allocation budget.", failure.getMessage());
assertEquals(original, store.load(original.key()).orElseThrow());
try (Stream<Path> files = Files.list(store.file(original.key()).getParent())) {
assertEquals(List.of(store.file(original.key())), files.toList());