@Test
public void shouldAllowCreateRelationshipWithSameStartAsEndNode() throws Exception {
long nodeId = graphdbHelper.createNode();
Map<String, Object> properties = Collections.<String, Object>emptyMap();
RelationshipRepresentation rel =
actions.createRelationship(nodeId, nodeId, "Loves", properties);
assertNotNull(rel);
}
@Test
public void shouldNotCreateRelationshipBetweenNonExistentNodes() throws Exception {
long nodeId = graphdbHelper.createNode();
Map<String, Object> properties = Collections.<String, Object>emptyMap();
try {
actions.createRelationship(nodeId, nodeId * 1000, "Loves", properties);
fail();
} catch (EndNodeNotFoundException e) {
// ok
}
try {
actions.createRelationship(nodeId * 1000, nodeId, "Loves", properties);
fail();
} catch (StartNodeNotFoundException e) {
// ok
}
}
@Test
public void shouldStoreRelationshipsBetweenTwoExistingNodes() throws Exception {
int relationshipCount = graphdbHelper.getNumberOfRelationships();
actions.createRelationship(
graphdbHelper.createNode(),
graphdbHelper.createNode(),
"LOVES",
Collections.<String, Object>emptyMap());
assertEquals(relationshipCount + 1, graphdbHelper.getNumberOfRelationships());
}
@Test
public void shouldStoreSuppliedPropertiesWhenCreatingRelationship() throws Exception {
Map<String, Object> properties = new HashMap<String, Object>();
properties.put("string", "value");
properties.put("integer", 17);
long relId =
actions
.createRelationship(
graphdbHelper.createNode(), graphdbHelper.createNode(), "LOVES", properties)
.getId();
Transaction tx = database.getGraph().beginTx();
try {
Relationship rel = database.getGraph().getRelationshipById(relId);
for (String key : rel.getPropertyKeys()) {
assertTrue("extra property stored", properties.containsKey(key));
}
for (Map.Entry<String, Object> entry : properties.entrySet()) {
assertEquals(entry.getValue(), rel.getProperty(entry.getKey()));
}
} finally {
tx.finish();
}
}