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package com.tinkerpop.gremlin.structure.strategy;

import com.tinkerpop.gremlin.AbstractGremlinTest;
import com.tinkerpop.gremlin.FeatureRequirement;
import com.tinkerpop.gremlin.FeatureRequirementSet;
import com.tinkerpop.gremlin.structure.Edge;
import com.tinkerpop.gremlin.structure.Graph;
import com.tinkerpop.gremlin.structure.Property;
import com.tinkerpop.gremlin.structure.Vertex;
import com.tinkerpop.gremlin.structure.VertexProperty;
import com.tinkerpop.gremlin.util.function.ThrowingConsumer;
import org.junit.Test;

import static com.tinkerpop.gremlin.structure.Graph.Features.EdgeFeatures.FEATURE_ADD_EDGES;
import static com.tinkerpop.gremlin.structure.Graph.Features.VariableFeatures.FEATURE_VARIABLES;
import static com.tinkerpop.gremlin.structure.Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

/**
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
public class ReadOnlyStrategyTest extends AbstractGremlinTest {
    public ReadOnlyStrategyTest() {
    }

    @Test
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = FEATURE_ADD_VERTICES)
    public void shouldNotAllowAddVertex() {
        assertException(g -> g.addVertex());
    }

    @Test
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = FEATURE_ADD_VERTICES)
    public void shouldNotAllowRemoveVertex() {
        g.addVertex();
        assertException(g -> g.V().next().remove());
    }

    @Test
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = FEATURE_ADD_VERTICES)
    @FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = FEATURE_ADD_EDGES)
    public void shouldNotAllowRemoveEdge() {
        final Vertex v = g.addVertex();
        v.addEdge("friend", v);
        assertException(g -> {
            final Edge e = g.E().next();
            e.remove();
        });
    }

    @Test
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = FEATURE_ADD_VERTICES)
    @FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = FEATURE_ADD_EDGES)
    public void shouldNotAllowAddEdge() {
        g.addVertex();
        assertException(g -> {
            final Vertex v = g.V().next();
            v.addEdge("friend", v);
        });
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.VERTICES_ONLY)
    public void shouldNotAllowVertexSetProperties() {
        g.addVertex();
        assertException(g -> g.V().next().property("test", "test"));
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.VERTICES_ONLY)
    public void shouldNotAllowVertexSetProperty() {
        g.addVertex();
        assertException(g -> g.V().next().property("test", "test"));
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.VERTICES_ONLY)
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_META_PROPERTIES)
    public void shouldNotAllowVertexPropertySetProperty() {
        g.addVertex();
        assertException(g -> {
            final VertexProperty p = g.V().next().property("test", "test");
            p.property("property", "on-a-property");
        });
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.SIMPLE)
    public void shouldNotAllowEdgeSetProperties() {
        final Vertex v = g.addVertex();
        v.addEdge("friend", v);
        assertException(g -> g.E().next().property("test", "test"));
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.SIMPLE)
    public void shouldNotAllowEdgeSetProperty() {
        final Vertex v = g.addVertex();
        v.addEdge("friend", v);
        assertException(g -> g.E().next().property("test", "test"));
    }

    @Test
    @FeatureRequirementSet(FeatureRequirementSet.Package.SIMPLE)
    public void shouldNotAllowVertexPropertyRemoval() {
        final Vertex v = g.addVertex();
        v.property("test", "test");
        final Property p = v.property("test");
        assertEquals("test", p.value());

        assertException(g -> {
            final VertexProperty