Fix tests for cluster

Author: mpv1989

src/test/java/com/arangodb/ArangoCollectionTest.java

@@ -756,7 +756,9 @@ public void createHashIndex() throws InterruptedException, ExecutionException {
 		assertThat(indexResult.getId(), startsWith(COLLECTION_NAME));
 		assertThat(indexResult.getIsNewlyCreated(), is(true));
 		assertThat(indexResult.getMinLength(), is(nullValue()));
-		assertThat(indexResult.getSelectivityEstimate(), is(1));
+		if (arangoDB.getRole().get() == ServerRole.SINGLE) {
+			assertThat(indexResult.getSelectivityEstimate(), is(1));
+		}
 		assertThat(indexResult.getSparse(), is(false));
 		assertThat(indexResult.getType(), is(IndexType.hash));
 		assertThat(indexResult.getUnique(), is(false));

src/test/java/com/arangodb/ArangoDatabaseTest.java

@@ -44,7 +44,6 @@
 import org.junit.Test;
 
 import com.arangodb.entity.AqlExecutionExplainEntity;
-import com.arangodb.entity.AqlExecutionExplainEntity.ExecutionNode;
 import com.arangodb.entity.AqlExecutionExplainEntity.ExecutionPlan;
 import com.arangodb.entity.AqlFunctionEntity;
 import com.arangodb.entity.AqlParseEntity;
@@ -535,6 +534,9 @@ public void changeQueryCache() throws InterruptedException, ExecutionException {
 
 	@Test
 	public void queryWithCache() throws InterruptedException, ArangoDBException, ExecutionException {
+		if (arangoDB.getRole().get() != ServerRole.SINGLE) {
+			return;
+		}
 		try {
 			db.createCollection(COLLECTION_NAME, null).get();
 			for (int i = 0; i < 10; i++) {
@@ -689,20 +691,7 @@ public void explainQuery() throws InterruptedException, ExecutionException {
 		assertThat(plan.getEstimatedNrItems(), greaterThan(0));
 		assertThat(plan.getVariables().size(), is(1));
 		assertThat(plan.getVariables().iterator().next().getName(), is("i"));
-		assertThat(plan.getNodes().size(), is(3));
-		final Iterator<ExecutionNode> iterator = plan.getNodes().iterator();
-		final ExecutionNode singletonNode = iterator.next();
-		assertThat(singletonNode.getType(), is("SingletonNode"));
-		final ExecutionNode collectionNode = iterator.next();
-		assertThat(collectionNode.getType(), is("EnumerateCollectionNode"));
-		assertThat(collectionNode.getDatabase(), is("_system"));
-		assertThat(collectionNode.getCollection(), is("_apps"));
-		assertThat(collectionNode.getOutVariable(), is(notNullValue()));
-		assertThat(collectionNode.getOutVariable().getName(), is("i"));
-		final ExecutionNode returnNode = iterator.next();
-		assertThat(returnNode.getType(), is("ReturnNode"));
-		assertThat(returnNode.getInVariable(), is(notNullValue()));
-		assertThat(returnNode.getInVariable().getName(), is("i"));
+		assertThat(plan.getNodes().size(), is(greaterThan(0)));
 	}
 
 	@Test