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Preserved terrain across updates
- Saved chunks retain their natural geometry and generation ownership - Future chunks blend against frozen terrain boundaries - Build revisions capture generation source and dependencies automatically - Native terrain queries use contained transition geometry and final height caches - Historical searches retain recorded pack identities and placement facts - World creation and Studio updates preserve native lifecycle ordering - Hydrology containment and scoped content workers retain generation context - Pregeneration validates saved completion before trusting cached progress
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import art.arcane.iris.buildtools.GenerationBuildRevision;
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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 GenerationBuildRevisionTest {
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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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GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), fixture.dependencies());
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String original = GenerationBuildRevision.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, GenerationBuildRevision.artifactHash(fixture.dependency()));
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GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), fixture.dependencies());
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assertEquals(GenerationBuildRevision.fingerprint(GenerationBuildRevision.read(fixture.revision())),
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GenerationBuildRevision.fingerprint(GenerationBuildRevision.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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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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 = GenerationBuildRevision.artifactHash(fixture.dependency());
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artifact(fixture.dependency(), "changed code", "same version", 0L);
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assertNotEquals(original, GenerationBuildRevision.artifactHash(fixture.dependency()));
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assertTrue(assertThrows(IOException.class,
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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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, () -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(),
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Map.of("math", fixture.dependency(), "new-math", fixture.dependency())));
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assertThrows(IOException.class,
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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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 = GenerationBuildRevision.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, GenerationBuildRevision.artifactHash(fixture.dependency()));
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assertThrows(IOException.class,
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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), 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 = GenerationBuildRevision.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, GenerationBuildRevision.artifactHash(fixture.dependency()));
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assertThrows(IOException.class,
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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), fixture.dependencies()));
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}
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}
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@Test
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public void capturesExplicitAgentBuildInputsAndExecutableSources() 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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GenerationBuildRevision.CaptureOptions options = new GenerationBuildRevision.CaptureOptions(
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fixture.root(), 1, "example.KernelV1", List.of(new GenerationBuildRevision.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 revision = fixture.root().resolve("agent.revision");
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GenerationBuildRevision.write(revision, GenerationBuildRevision.capture(options, fixture.dependencies()));
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GenerationBuildRevision.verifySnapshot(fixture.root(), revision, fixture.dependencies());
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Files.writeString(agentBuild, "plugins { id 'application' }");
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assertThrows(IOException.class,
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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), revision, 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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() -> GenerationBuildRevision.verifySnapshot(fixture.root(), revision, 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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GenerationBuildRevision.verifyDependencySubset(fixture.revision(), fixture.dependencies());
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assertThrows(IOException.class, () -> GenerationBuildRevision.verifyDependencySubset(fixture.revision(),
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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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() -> GenerationBuildRevision.verifyDependencySubset(fixture.revision(), fixture.dependencies()));
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}
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@Test
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public void catalogRequiresAPackagedAlgorithmTuple() 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, GenerationBuildRevision.SourceManifest> manifests = Map.of(1, GenerationBuildRevision.read(fixture.revision()));
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GenerationBuildRevision.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, () -> GenerationBuildRevision.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, () -> GenerationBuildRevision.verifyCatalog(catalog, manifests));
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}
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@Test
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public void recapturesChangedGenerationWithoutChangingAbi() throws Exception {
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Fixture fixture = fixture();
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String original = GenerationBuildRevision.fingerprint(GenerationBuildRevision.read(fixture.revision()));
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Files.writeString(fixture.root().resolve("generation/Noise.java"), "class Noise { int value = 9; }");
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artifact(fixture.dependency(), "new generation code", "new version", 0L);
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GenerationBuildRevision.SourceManifest next = GenerationBuildRevision.capture(fixture.options(), fixture.dependencies());
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GenerationBuildRevision.write(fixture.revision(), next);
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GenerationBuildRevision.verifySnapshot(fixture.root(), fixture.revision(), fixture.dependencies());
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assertEquals(1, next.abi());
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assertNotEquals(original, GenerationBuildRevision.fingerprint(next));
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assertEquals(next, GenerationBuildRevision.read(fixture.revision()));
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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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GenerationBuildRevision.CaptureOptions options = new GenerationBuildRevision.CaptureOptions(
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root, 1, "example.KernelV1", List.of(new GenerationBuildRevision.AlgorithmVersion(1, 1)),
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List.of("generation"), List.of("generation/kernels"));
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Path revision = root.resolve("abi-1.revision");
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Map<String, Path> dependencies = Map.of("math", dependency);
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GenerationBuildRevision.write(revision, GenerationBuildRevision.capture(options, dependencies));
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return new Fixture(root, revision, 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 revision, Path dependency, Map<String, Path> dependencies,
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GenerationBuildRevision.CaptureOptions options) {
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}
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}
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