1 files changed, 109 insertions, 0 deletions

diff --git a/store/src/test/java/tools/refinery/data/map/tests/fuzz/RestoreFuzzTest.java b/store/src/test/java/tools/refinery/data/map/tests/fuzz/RestoreFuzzTest.java
new file mode 100644
index 00000000..1b8b38c4
--- /dev/null
+++ b/store/src/test/java/tools/refinery/data/map/tests/fuzz/RestoreFuzzTest.java
@@ -0,0 +1,109 @@
+package tools.refinery.data.map.tests.fuzz;
+
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Random;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Timeout;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import tools.refinery.data.map.ContinousHashProvider;
+import tools.refinery.data.map.VersionedMapStore;
+import tools.refinery.data.map.VersionedMapStoreImpl;
+import tools.refinery.data.map.internal.VersionedMapImpl;
+import tools.refinery.data.map.tests.fuzz.utils.FuzzTestUtils;
+import tools.refinery.data.map.tests.utils.MapTestEnvironment;
+
+class RestoreFuzzTest {
+        private void runFuzzTest(String scenario, int seed, int steps, int maxKey, int maxValue, int commitFrequency,
+                        boolean evilHash) {
+                String[] values = MapTestEnvironment.prepareValues(maxValue);
+                ContinousHashProvider<Integer> chp = MapTestEnvironment.prepareHashProvider(evilHash);
+
+                VersionedMapStore<Integer, String> store = new VersionedMapStoreImpl<Integer, String>(chp, values[0]);
+
+                iterativeRandomPutsAndCommitsThenRestore(scenario, store, steps, maxKey, values, seed, commitFrequency);
+        }
+
+        private void iterativeRandomPutsAndCommitsThenRestore(String scenario, VersionedMapStore<Integer, String> store,
+                        int steps, int maxKey, String[] values, int seed, int commitFrequency) {
+                // 1. build a map with versions
+                Random r = new Random(seed);
+                VersionedMapImpl<Integer, String> versioned = (VersionedMapImpl<Integer, String>) store.createMap();
+                Map<Integer, Long> index2Version = new HashMap<>();
+
+                for (int i = 0; i < steps; i++) {
+                        int index = i + 1;
+                        int nextKey = r.nextInt(maxKey);
+                        String nextValue = values[r.nextInt(values.length)];
+                        try {
+                                versioned.put(nextKey, nextValue);
+                        } catch (Exception exception) {
+                                exception.printStackTrace();
+                                fail(scenario + ":" + index + ": exception happened: " + exception);
+                        }
+                        if (index % commitFrequency == 0) {
+                                long version = versioned.commit();
+                                index2Version.put(i, version);
+                        }
+                        MapTestEnvironment.printStatus(scenario, index, steps, "building");
+                }
+                // 2. create a non-versioned and
+                VersionedMapImpl<Integer, String> reference = (VersionedMapImpl<Integer, String>) store.createMap();
+                r = new Random(seed);
+
+                for (int i = 0; i < steps; i++) {
+                        int index = i + 1;
+                        int nextKey = r.nextInt(maxKey);
+                        String nextValue = values[r.nextInt(values.length)];
+                        try {
+                                reference.put(nextKey, nextValue);
+                        } catch (Exception exception) {
+                                exception.printStackTrace();
+                                fail(scenario + ":" + index + ": exception happened: " + exception);
+                        }
+                        if (index % commitFrequency == 0) {
+                                versioned.restore(index2Version.get(i));
+                                MapTestEnvironment.compareTwoMaps(scenario + ":" + index, reference, versioned);
+                        }
+                        MapTestEnvironment.printStatus(scenario, index, steps, "comparison");
+                }
+
+        }
+
+        @ParameterizedTest(name = "Restore {index}/{0} Steps={1} Keys={2} Values={3} commit frequency={4} seed={5} evil-hash={6}")
+        @MethodSource
+        @Timeout(value = 10)
+        @Tag("smoke")
+        void parametrizedFastFuzz(int tests, int steps, int noKeys, int noValues, int commitFrequency, int seed,
+                        boolean evilHash) {
+                runFuzzTest("RestoreS" + steps + "K" + noKeys + "V" + noValues + "s" + seed, seed, steps, noKeys, noValues,
+                                commitFrequency, evilHash);
+        }
+
+        static Stream<Arguments> parametrizedFastFuzz() {
+                return FuzzTestUtils.permutationWithSize(new Object[] { FuzzTestUtils.FAST_STEP_COUNT }, new Object[] { 3, 32, 32 * 32 },
+                                new Object[] { 2, 3 }, new Object[] { 1, 10, 100 }, new Object[] { 1, 2, 3 },
+                                new Object[] { false, true });
+        }
+
+        @ParameterizedTest(name = "Restore {index}/{0} Steps={1} Keys={2} Values={3} commit frequency={4} seed={5} evil-hash={6}")
+        @MethodSource
+        @Tag("smoke")
+        @Tag("slow")
+        void parametrizedSlowFuzz(int tests, int steps, int noKeys, int noValues, int commitFrequency, int seed,
+                        boolean evilHash) {
+                runFuzzTest("RestoreS" + steps + "K" + noKeys + "V" + noValues + "s" + seed, seed, steps, noKeys, noValues,
+                                commitFrequency, evilHash);
+        }
+
+        static Stream<Arguments> parametrizedSlowFuzz() {
+                return FuzzTestUtils.changeStepCount(RestoreFuzzTest.parametrizedFastFuzz(), 1);
+        }
+}