1 files changed, 142 insertions, 0 deletions

diff --git a/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/ContentEqualsFuzzTest.java b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/ContentEqualsFuzzTest.java
new file mode 100644
index 00000000..5004c152
--- /dev/null
+++ b/store/src/test/java/org/eclipse/viatra/solver/data/map/tests/fuzz/ContentEqualsFuzzTest.java
@@ -0,0 +1,142 @@
+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.AbstractMap.SimpleEntry;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Random;
+import java.util.stream.Stream;
+
+import org.eclipse.viatra.solver.data.map.ContinousHashProvider;
+import org.eclipse.viatra.solver.data.map.Cursor;
+import org.eclipse.viatra.solver.data.map.VersionedMap;
+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 ContentEqualsFuzzTest {
+        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);
+
+                Random r = new Random(seed);
+
+                iterativeRandomPutsAndCommitsThenCompare(scenario, chp, steps, maxKey, values, r, commitFrequency);
+        }
+
+        private void iterativeRandomPutsAndCommitsThenCompare(String scenario, ContinousHashProvider<Integer> chp, int steps, int maxKey, String[] values, Random r, int commitFrequency) {
+                
+                VersionedMapStore<Integer, String> store1 = new VersionedMapStoreImpl<Integer, String>(chp, values[0]);
+                VersionedMap<Integer, String> sut1 = store1.createMap();
+                
+                // Fill one map
+                for (int i = 0; i < steps; i++) {
+                        int index1 = i + 1;
+                        int nextKey = r.nextInt(maxKey);
+                        String nextValue = values[r.nextInt(values.length)];
+                        try {
+                                sut1.put(nextKey, nextValue);
+                        } catch (Exception exception) {
+                                exception.printStackTrace();
+                                fail(scenario + ":" + index1 + ": exception happened: " + exception);
+                        }
+                        MapTestEnvironment.printStatus(scenario, index1, steps, "Fill");
+                        if (index1 % commitFrequency == 0) {
+                                sut1.commit();
+                        }
+                }
+                
+                // Get the content of the first map
+                List<SimpleEntry<Integer, String>> content = new LinkedList<>();
+                Cursor<Integer, String> cursor = sut1.getAll();
+                while (cursor.move()) {
+                        content.add(new SimpleEntry<>(cursor.getKey(), cursor.getValue()));
+                }
+                
+                // Randomize the order of the content
+                Collections.shuffle(content, r);
+                
+                VersionedMapStore<Integer, String> store2 = new VersionedMapStoreImpl<Integer, String>(chp, values[0]);
+                VersionedMap<Integer, String> sut2 = store2.createMap();
+                int index2 = 1;
+                for (SimpleEntry<Integer, String> entry : content) {
+                        sut2.put(entry.getKey(), entry.getValue());
+                        if(index2++%commitFrequency == 0)
+                                sut2.commit();
+                }
+                
+                // Check the integrity of the maps
+                ((VersionedMapImpl<Integer,String>) sut1).checkIntegrity();
+                ((VersionedMapImpl<Integer,String>) sut2).checkIntegrity();
+                
+//              // Compare the two maps
+                // By size
+                assertEquals(sut1.getSize(), content.size());
+                assertEquals(sut2.getSize(), content.size());
+                
+                
+                
+                // By cursors
+                Cursor<Integer, String> cursor1 = sut1.getAll();
+                Cursor<Integer, String> cursor2 = sut2.getAll();
+                int index3 = 1;
+                boolean canMove = true;
+                do{
+                        boolean canMove1 = cursor1.move();
+                        boolean canMove2 = cursor2.move();
+                        assertEquals(canMove1, canMove2, scenario + ":" + index3 +" Cursors stopped at different times!");
+                        assertEquals(cursor1.getKey(), cursor2.getKey(), scenario + ":" + index3 +" Cursors have different keys!");
+                        assertEquals(cursor1.getValue(), cursor2.getValue(), scenario + ":" + index3 +" Cursors have different values!");
+                        
+                        canMove = canMove1;
+                        MapTestEnvironment.printStatus(scenario, index3++, content.size(), "Compare");
+                } while (canMove);
+                
+                // By hashcode
+                assertEquals(sut1.hashCode(), sut2.hashCode(), "Hash codes are not equal!");
+                
+                // By equals
+                assertEquals(sut1, sut2, "Maps are not equals");
+        }
+
+        @ParameterizedTest(name = "Compare {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("CompareS" + 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 = "Compare {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("CompareS" + steps + "K" + noKeys + "V" + noValues + "s" + seed, seed, steps, noKeys, noValues,
+                                commitFrequency, evilHash);
+        }
+
+        static Stream<Arguments> parametrizedSlowFuzz() {
+                return FuzzTestUtils.changeStepCount(parametrizedFastFuzz(), 1);
+        }
+}