Add tests for the parse and compare hooks

core/src/test/java/de/jplag/HooksTest.java

@@ -0,0 +1,53 @@
+package de.jplag;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.junit.jupiter.api.Test;
+
+import de.jplag.exceptions.ExitException;
+
+class HooksTest extends TestBase {
+    private static final String ROOT = "NoDuplicate";
+    private static final int SUBMISSION_COUNT = 3;
+    private static final int COMPARISON_COUNT = 3;
+
+    @Test
+    void testPreParseHook() throws ExitException {
+        final AtomicInteger timesCalled = new AtomicInteger(0);
+        runJPlag(ROOT, it -> it.withPreParseHook(submissions -> {
+            timesCalled.incrementAndGet();
+            assertEquals(SUBMISSION_COUNT, submissions.size());
+        }));
+        assertEquals(1, timesCalled.get());
+    }
+
+    @Test
+    void testParseHook() throws ExitException {
+        final AtomicInteger totalSubmissions = new AtomicInteger(0);
+        runJPlag(ROOT, it -> it.withParseHook(submission -> {
+            totalSubmissions.incrementAndGet();
+        }));
+        assertEquals(SUBMISSION_COUNT, totalSubmissions.get());
+    }
+
+    @Test
+    void testPreCompareHook() throws ExitException {
+        final AtomicInteger timesCalled = new AtomicInteger(0);
+        runJPlag(ROOT, it -> it.withPreCompareHook(comparisons -> {
+            timesCalled.incrementAndGet();
+            assertEquals(COMPARISON_COUNT, comparisons.size());
+        }));
+        assertEquals(1, timesCalled.get());
+    }
+
+    @Test
+    void testCompareHook() throws ExitException {
+        final AtomicInteger totalComparisons = new AtomicInteger(0);
+        runJPlag(ROOT, it -> it.withCompareHook(comparison -> {
+            totalComparisons.incrementAndGet();
+        }));
+        assertEquals(COMPARISON_COUNT, totalComparisons.get());
+    }
+}