STAMP-project#11 Add JUnit Test to DiffMutationFilterFactory.

src/test/java/eu/stamp_project/interceptors/DiffMutationFilterFactoryTest.java

@@ -0,0 +1,33 @@
+package eu.stamp_project.interceptors;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import org.pitest.mutationtest.build.InterceptorParameters;
+import org.pitest.mutationtest.build.InterceptorType;
+import org.pitest.mutationtest.build.MutationInterceptor;
+import org.pitest.plugin.FeatureSetting;
+
+class DiffMutationFilterFactoryTest {
+
+	@Test
+	void testInterceptorType() {
+		DiffMutationFilterFactory diffMutationFilterFactory = new DiffMutationFilterFactory();
+		MutationInterceptor diffMutationFilter = diffMutationFilterFactory
+				.createInterceptor(makeFor("file", "LICENSE"));
+		assertEquals(InterceptorType.FILTER, diffMutationFilter.type());
+	}
+
+	private InterceptorParameters makeFor(String key, String... vals) {
+		final Map<String, List<String>> values = new HashMap<>();
+		values.put(key, Arrays.asList(vals));
+		final FeatureSetting fs = new FeatureSetting(null, null, values);
+		return new InterceptorParameters(fs, null, null);
+	}
+
+}