1 files changed, 96 insertions, 0 deletions

diff --git a/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MultiThreadFuzzTest.java b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MultiThreadFuzzTest.java
new file mode 100644
index 00000000..c3a3e8ea
--- /dev/null
+++ b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MultiThreadFuzzTest.java
@@ -0,0 +1,96 @@
+package org.eclipse.viatra.solver.data.map.tests.fuzz;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.stream.Stream;
+
+import org.eclipse.viatra.solver.data.map.ContinousHashProvider;
+import org.eclipse.viatra.solver.data.map.VersionedMapStore;
+import org.eclipse.viatra.solver.data.map.VersionedMapStoreImpl;
+import org.eclipse.viatra.solver.data.map.tests.fuzz.utils.FuzzTestUtils;
+import org.eclipse.viatra.solver.data.map.tests.utils.MapTestEnvironment;
+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;
+
+class MultiThreadFuzzTest {
+        public static final int noThreads = 32;
+        
+        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]);
+                
+                // initialize runnables
+                MultiThreadTestRunnable[] runnables = new MultiThreadTestRunnable[noThreads];
+                for(int i = 0; i<noThreads; i++) {
+                        runnables[i] = new MultiThreadTestRunnable(scenario+"-T"+(i+1), store, steps, maxKey, values, seed, commitFrequency);
+                }
+                
+                // initialize threads
+                Thread[] threads = new Thread[noThreads];
+                for(int i = 0; i<noThreads; i++) {
+                        threads[i] = new Thread(runnables[i]);
+                }
+                
+                // start threads;
+                for(int i = 0; i<noThreads; i++) {
+                        threads[i].start();
+                }
+                
+                // wait all the threads;
+                for(int i = 0; i<noThreads; i++) {
+                        try {
+                                threads[i].join();
+                        } catch (InterruptedException e) {
+                                fail("Thread "+i+" interrupted.");
+                        }
+                }
+                
+                // collect errors
+                List<Throwable> errors = new LinkedList<>();
+                for(int i = 0; i<noThreads; i++) {
+                        errors.addAll(runnables[i].getErrors());
+                }
+                
+                assertEquals(Collections.EMPTY_LIST, errors);
+        }
+
+        @ParameterizedTest(name = "Multithread {index}/{0} Steps={1} Keys={2} Values={3} commit frequency={4} seed={5} evil-hash={6}")
+        @MethodSource
+        @Timeout(value = 10)
+        @Tag("fuzz")
+        void parametrizedFastFuzz(int tests, int steps, int noKeys, int noValues, int commitFrequency, int seed,
+                        boolean evilHash) {
+                runFuzzTest("MultithreadS" + steps + "K" + noKeys + "V" + noValues + "CF" + commitFrequency + "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[] { 10, 100 }, new Object[] { 1, 2, 3 },
+                                new Object[] { false, true });
+        }
+
+        @ParameterizedTest(name = "Multithread {index}/{0} Steps={1} Keys={2} Values={3} commit frequency={4} seed={5} evil-hash={6}")
+        @MethodSource
+        @Tag("fuzz")
+        @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);
+        }
+}