1 files changed, 91 insertions, 0 deletions

diff --git a/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MutableFuzzTest.java b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MutableFuzzTest.java
new file mode 100644
index 00000000..2d589dc9
--- /dev/null
+++ b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/MutableFuzzTest.java
@@ -0,0 +1,91 @@
+package org.eclipse.viatra.solver.data.map.tests.fuzz;
+
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.util.Random;
+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.internal.VersionedMapImpl;
+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 MutableFuzzTest {
+        private void runFuzzTest(String scenario, int seed, int steps, int maxKey, int maxValue, boolean evilHash) {
+                String[] values = MapTestEnvironment.prepareValues(maxValue);
+                ContinousHashProvider<Integer> chp = MapTestEnvironment.prepareHashProvider(evilHash);
+
+                VersionedMapStore<Integer, String> store = new VersionedMapStoreImpl<Integer, String>(chp, values[0]);
+                VersionedMapImpl<Integer, String> sut = (VersionedMapImpl<Integer, String>) store.createMap();
+                MapTestEnvironment<Integer, String> e = new MapTestEnvironment<Integer, String>(sut);
+
+                Random r = new Random(seed);
+
+                iterativeRandomPuts(scenario, steps, maxKey, values, e, r);
+        }
+
+        private void iterativeRandomPuts(String scenario, int steps, int maxKey, String[] values,
+                        MapTestEnvironment<Integer, String> e, Random r) {
+                int stopAt = -1;
+                for (int i = 0; i < steps; i++) {
+                        int index = i + 1;
+                        int nextKey = r.nextInt(maxKey);
+                        String nextValue = values[r.nextInt(values.length)];
+                        if (index == stopAt) {
+                                System.out.println("issue!");
+                                System.out.println("State before:");
+                                e.printComparison();
+                                e.sut.prettyPrint();
+                                System.out.println("Next: put(" + nextKey + "," + nextValue + ")");
+                        }
+                        try {
+                                e.put(nextKey, nextValue);
+                                if (index == stopAt) {
+                                        e.sut.prettyPrint();
+                                }
+                                e.checkEquivalence(scenario + ":" + index);
+                        } catch (Exception exception) {
+                                exception.printStackTrace();
+                                fail(scenario + ":" + index + ": exception happened: " + exception);
+                        }
+                        MapTestEnvironment.printStatus(scenario, index, steps, null);
+                }
+        }
+
+        @ParameterizedTest(name = "Mutable {index}/{0} Steps={1} Keys={2} Values={3} seed={4} evil-hash={5}")
+        @MethodSource
+        @Timeout(value = 10)
+        @Tag("fuzz")
+        void parametrizedFuzz(int test, int steps, int noKeys, int noValues, int seed, boolean evilHash) {
+                runFuzzTest(
+                                "MutableS" + steps + "K" + noKeys + "V" + noValues + "s" + seed + "H" + (evilHash ? "Evil" : "Normal"),
+                                seed, steps, noKeys, noValues, evilHash);
+        }
+
+        static Stream<Arguments> parametrizedFuzz() {
+                return FuzzTestUtils.permutationWithSize(new Object[] { FuzzTestUtils.FAST_STEP_COUNT },
+                                new Object[] { 3, 32, 32 * 32, 32 * 32 * 32 * 32 }, new Object[] { 2, 3 }, new Object[] { 1, 2, 3 },
+                                new Object[] { false, true });
+        }
+        
+        @ParameterizedTest(name = "Mutable {index}/{0} Steps={1} Keys={2} Values={3} seed={4} evil-hash={5}")
+        @MethodSource
+        @Tag("fuzz")
+        @Tag("slow")
+        void parametrizedSlowFuzz(int test, int steps, int noKeys, int noValues, int seed, boolean evilHash) {
+                runFuzzTest(
+                                "MutableS" + steps + "K" + noKeys + "V" + noValues + "s" + seed + "H" + (evilHash ? "Evil" : "Normal"),
+                                seed, steps, noKeys, noValues, evilHash);
+        }
+
+        static Stream<Arguments> parametrizedSlowFuzz() {
+                return FuzzTestUtils.changeStepCount(parametrizedFuzz(), 1);
+        }
+}