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Added generation history
- World-local pack epochs preserve generated chunks across restart-only updates - Kernel catalogs and source seals retain executable generation behavior across jar changes - Crash-safe ownership, boundary, registry, semantic, and mantle records survive activation changes - New terrain blends lower surfaces and inverted ceilings against frozen historical boundaries - Cave, object, structure, biome, and hydrology work respects activation ownership - Find commands merge recorded facts with eligible active predictions for biomes, regions, structures, objects, and rivers - Bukkit, Fabric, Forge, and NeoForge route generation through retained runtime scopes - Shutdown ordering preserves class-loader resources until world and service cleanup finishes - Tests cover activation chains, failure recovery, retained registries, bounded lookup, and transition geometry
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import art.arcane.iris.buildtools.GenerationKernelSeal;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.TemporaryFolder;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.List;
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import java.util.Map;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotEquals;
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import static org.junit.Assert.assertThrows;
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import static org.junit.Assert.assertTrue;
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public class GenerationKernelSealTest {
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@Rule
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public final TemporaryFolder temporary = new TemporaryFolder();
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@Test
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public void verifiesUnchangedSourceAndCanonicalDependencyContents() throws Exception {
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Fixture fixture = fixture();
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GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies());
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String original = GenerationKernelSeal.artifactHash(fixture.dependency());
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artifact(fixture.dependency(), "same code", "another version", 1_700_000_000_000L);
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assertEquals(original, GenerationKernelSeal.artifactHash(fixture.dependency()));
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GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies());
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assertEquals(GenerationKernelSeal.fingerprint(GenerationKernelSeal.read(fixture.seal())),
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GenerationKernelSeal.fingerprint(GenerationKernelSeal.capture(fixture.options(), fixture.dependencies())));
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}
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@Test
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public void rejectsChangedAddedAndDeletedGenerationSources() throws Exception {
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Fixture fixture = fixture();
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Path source = fixture.root().resolve("generation/Noise.java");
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Files.writeString(source, "class Noise { int value = 2; }");
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assertTrue(assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()))
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.getMessage().contains("source changed"));
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Files.writeString(source, "class Noise { int value = 1; }");
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Path added = fixture.root().resolve("generation/Added.java");
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Files.writeString(added, "class Added {}");
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assertTrue(assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()))
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.getMessage().contains("source added"));
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Files.delete(added);
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Files.delete(source);
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()));
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}
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@Test
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public void rejectsChangedAddedAndDeletedDependencies() throws Exception {
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Fixture fixture = fixture();
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String original = GenerationKernelSeal.artifactHash(fixture.dependency());
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artifact(fixture.dependency(), "changed code", "same version", 0L);
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assertNotEquals(original, GenerationKernelSeal.artifactHash(fixture.dependency()));
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assertTrue(assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()))
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.getMessage().contains("dependency changed"));
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artifact(fixture.dependency(), "same code", "same version", 0L);
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assertThrows(IOException.class, () -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(),
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Map.of("math", fixture.dependency(), "new-math", fixture.dependency())));
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), Map.of()));
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}
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@Test
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public void rejectsMultiReleaseManifestChanges() throws Exception {
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Fixture fixture = fixture();
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String original = GenerationKernelSeal.artifactHash(fixture.dependency());
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artifact(fixture.dependency(), "same code", "same version\r\nMulti-Release: true", 0L);
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assertNotEquals(original, GenerationKernelSeal.artifactHash(fixture.dependency()));
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()));
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}
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@Test
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public void rejectsAgentEntrypointAndCapabilityChanges() throws Exception {
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Fixture fixture = fixture();
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String original = GenerationKernelSeal.artifactHash(fixture.dependency());
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for (String attribute : List.of("Agent-Class", "Premain-Class", "Launcher-Agent-Class", "Boot-Class-Path",
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"Can-Redefine-Classes", "Can-Retransform-Classes", "Can-Set-Native-Method-Prefix")) {
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artifact(fixture.dependency(), "same code", "same version\r\n" + attribute + ": changed", 0L);
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assertNotEquals(attribute, original, GenerationKernelSeal.artifactHash(fixture.dependency()));
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies()));
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}
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}
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@Test
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public void sealsExplicitAgentBuildInputsAndExecutableSources() throws Exception {
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Fixture fixture = fixture();
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Path agentSource = fixture.root().resolve("agent/src/main/java/Installer.java");
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Path agentBuild = fixture.root().resolve("agent/build.gradle");
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Files.createDirectories(agentSource.getParent());
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Files.writeString(agentSource, "class Installer {}");
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Files.writeString(agentBuild, "plugins { id 'java' }");
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GenerationKernelSeal.CaptureOptions options = new GenerationKernelSeal.CaptureOptions(
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fixture.root(), 1, "example.KernelV1", List.of(new GenerationKernelSeal.AlgorithmVersion(1, 1)),
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List.of("generation", "agent/build.gradle", "agent/src/main/java"), List.of("generation/kernels"));
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Path seal = fixture.root().resolve("agent.seal");
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GenerationKernelSeal.writeNew(seal, GenerationKernelSeal.capture(options, fixture.dependencies()));
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GenerationKernelSeal.verify(fixture.root(), seal, fixture.dependencies());
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Files.writeString(agentBuild, "plugins { id 'application' }");
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), seal, fixture.dependencies()));
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Files.writeString(agentBuild, "plugins { id 'java' }");
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Files.writeString(agentSource, "class Installer { boolean defers; }");
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verify(fixture.root(), seal, fixture.dependencies()));
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}
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@Test
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public void checksTheActualPlatformDependencySubset() throws Exception {
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Fixture fixture = fixture();
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GenerationKernelSeal.verifyDependencySubset(fixture.seal(), fixture.dependencies());
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assertThrows(IOException.class, () -> GenerationKernelSeal.verifyDependencySubset(fixture.seal(),
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Map.of("unknown-library", fixture.dependency())));
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artifact(fixture.dependency(), "platform override", "same version", 0L);
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.verifyDependencySubset(fixture.seal(), fixture.dependencies()));
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}
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@Test
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public void catalogCannotSelectAnUnsealedAlgorithmTuple() throws Exception {
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Fixture fixture = fixture();
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Path catalog = fixture.root().resolve("catalog.tsv");
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Files.writeString(catalog, "iris-generation-kernel-catalog-v1\ncurrent\t1\t1\t1\nkernel\t1\n");
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Map<Integer, GenerationKernelSeal.SourceManifest> manifests = Map.of(1, GenerationKernelSeal.read(fixture.seal()));
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GenerationKernelSeal.verifyCatalog(catalog, manifests);
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Files.writeString(catalog, "iris-generation-kernel-catalog-v1\ncurrent\t1\t2\t1\nkernel\t1\n");
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assertThrows(IOException.class, () -> GenerationKernelSeal.verifyCatalog(catalog, manifests));
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Files.writeString(catalog, "iris-generation-kernel-catalog-v1\ncurrent\t1\t1\t1\nkernel\t1\nkernel\t2\n");
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assertThrows(IOException.class, () -> GenerationKernelSeal.verifyCatalog(catalog, manifests));
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}
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@Test
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public void permitsSeparatelyScopedFutureKernelsWithoutChangingRetainedSeal() throws Exception {
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Fixture fixture = fixture();
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Path future = fixture.root().resolve("generation/kernels/v2/NewMath.java");
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Files.createDirectories(future.getParent());
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Files.writeString(future, "class NewMath {}");
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GenerationKernelSeal.verify(fixture.root(), fixture.seal(), fixture.dependencies());
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GenerationKernelSeal.SourceManifest next = GenerationKernelSeal.capture(new GenerationKernelSeal.CaptureOptions(
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fixture.root(), 2, "example.KernelV2", List.of(new GenerationKernelSeal.AlgorithmVersion(2, 3)),
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List.of("generation/kernels/v2"), List.of()), fixture.dependencies());
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assertNotEquals(GenerationKernelSeal.fingerprint(next),
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GenerationKernelSeal.fingerprint(GenerationKernelSeal.read(fixture.seal())));
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assertThrows(IOException.class,
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() -> GenerationKernelSeal.writeNew(fixture.seal(), next));
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}
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private Fixture fixture() throws Exception {
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Path root = temporary.newFolder().toPath();
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Files.createDirectories(root.resolve("generation"));
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Files.writeString(root.resolve("generation/Noise.java"), "class Noise { int value = 1; }");
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Path dependency = root.resolve("math.jar");
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artifact(dependency, "same code", "same version", 0L);
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GenerationKernelSeal.CaptureOptions options = new GenerationKernelSeal.CaptureOptions(
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root, 1, "example.KernelV1", List.of(new GenerationKernelSeal.AlgorithmVersion(1, 1)),
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List.of("generation"), List.of("generation/kernels"));
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Path seal = root.resolve("abi-1.seal");
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Map<String, Path> dependencies = Map.of("math", dependency);
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GenerationKernelSeal.writeNew(seal, GenerationKernelSeal.capture(options, dependencies));
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return new Fixture(root, seal, dependency, dependencies, options);
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}
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private static void artifact(Path path, String content, String version, long timestamp) throws IOException {
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try (ZipOutputStream output = new ZipOutputStream(Files.newOutputStream(path))) {
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ZipEntry metadata = new ZipEntry("META-INF/MANIFEST.MF");
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metadata.setTime(timestamp);
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output.putNextEntry(metadata);
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output.write(("Manifest-Version: 1.0\r\nImplementation-Version: " + version + "\r\n\r\n")
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.getBytes(StandardCharsets.UTF_8));
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output.closeEntry();
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ZipEntry code = new ZipEntry("example/Math.class");
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code.setTime(timestamp);
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output.putNextEntry(code);
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output.write(content.getBytes(StandardCharsets.UTF_8));
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output.closeEntry();
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}
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}
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private record Fixture(Path root, Path seal, Path dependency, Map<String, Path> dependencies,
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GenerationKernelSeal.CaptureOptions options) {
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}
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}
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