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GraphTraversalExtensionsTests.cs
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GraphTraversalExtensionsTests.cs
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using System;
using System.Collections.Generic;
using FluentAssertions;
using Gremlin.Net.Process.Traversal;
using Xunit;
using static Gremlin.Net.Process.Traversal.__;
using Order = Gremlin.Net.Process.Traversal.Order;
namespace Gremlin.Net.Extensions.Tests
{
public class BytecodeExtensionsTests
{
private readonly GraphTraversalSource _g;
public BytecodeExtensionsTests()
{
_g = AnonymousTraversalSource.Traversal();
}
[Fact]
public void TestToGremlinQueryWithSimpleTraversal()
{
var query = _g.AddV("Organisation").Property("id", "acme-inc").Property("name", "Acme Inc").ToGremlinQuery();
query.ToString().Should().Be("g.addV('Organisation').property('id', id).property('name', name)");
IReadOnlyDictionary<string, object> expectedArguments = new Dictionary<string, object>
{
["id"] = "acme-inc",
["name"] = "Acme Inc"
};
query.Arguments.Should().BeEquivalentTo(expectedArguments);
}
[Fact]
public void TestToGremlinQueryWithInnerPropertyTraversal()
{
var query = _g
.AddV("Organisation")
.Property("id", "acme-inc")
.Property("name", "Acme Inc")
.AddE("linked_to")
.To(_g.AddV("Organisation").Property("id", "some-other-company").Property("name", "Some other company"))
.ToGremlinQuery();
query.ToString().Should().Be("g.addV('Organisation').property('id', id).property('name', name).addE('linked_to').to(g.addV('Organisation').property('id', id_1).property('name', name_1))");
IReadOnlyDictionary<string, object> expectedArguments = new Dictionary<string, object>
{
["id"] = "acme-inc",
["name"] = "Acme Inc",
["id_1"] = "some-other-company",
["name_1"] = "Some other company"
};
query.Arguments.Should().BeEquivalentTo(expectedArguments);
}
[Fact]
public void TestToGremlinQueryWithMultilayerInnerPropertyTraversal()
{
var query = _g
.AddV("Organisation")
.Property("id", "acme-inc")
.Property("name", "Acme Inc")
.AddE("linked_to")
.To(_g.AddV("Organisation").Property("id", "some-other-company").Property("name", "Some other company").AddE("linked_to").To(_g.AddV("Company").Property("name", "some inner name")))
.ToGremlinQuery();
query.ToString().Should().Be("g.addV('Organisation').property('id', id).property('name', name).addE('linked_to').to(g.addV('Organisation').property('id', id_1).property('name', name_1).addE('linked_to').to(g.addV('Company').property('name', name_2)))");
IReadOnlyDictionary<string, object> expectedArguments = new Dictionary<string, object>
{
["id"] = "acme-inc",
["name"] = "Acme Inc",
["id_1"] = "some-other-company",
["name_1"] = "Some other company",
["name_2"] = "some inner name"
};
query.Arguments.Should().BeEquivalentTo(expectedArguments);
}
[Fact]
public void TestToGremlinQueryWithNestedTraversal()
{
string query = _g.V("acme-inc").AddE("supplies").To(_g.V("google")).ToGremlinQuery();
query.Should().Be("g.V('acme-inc').addE('supplies').to(g.V('google'))");
}
[Fact]
public void TestToGremlinQueryComplex()
{
var query = _g.V("thomas").OutE("knows").Where(InV().Has("id", "mary")).Drop().ToGremlinQuery();
query.ToString().Should().Be("g.V('thomas').outE('knows').where(inV().has('id', id_1)).drop()");
query.Arguments
.Should().HaveCount(1)
.And
.Contain(new KeyValuePair<string, object>("id_1", "mary"));
}
[Fact]
public void TestToGremlinQuerySort()
{
string query = _g.V().HasLabel("person").Order().By("firstName", Order.Decr).ToGremlinQuery();
query.Should().Be("g.V().hasLabel('person').order().by('firstName', decr)");
}
[Fact]
public void TestToGremlinQueryHandlesNumbers()
{
var query = _g.V("thomas").Property("age", 44).ToGremlinQuery();
query.ToString().Should().Be("g.V('thomas').property('age', age)");
IReadOnlyDictionary<string, object> expectedArguments = new Dictionary<string, object>
{
["age"] = 44
};
query.Arguments.Should().BeEquivalentTo(expectedArguments);
}
[Fact]
public void TestToGremlinQueryFilterRange()
{
string query = _g.V().HasLabel("person").Has("age", P.Gt(40)).ToGremlinQuery();
query.Should().Be("g.V().hasLabel('person').has('age', gt(40))");
}
[Fact]
public void TestToGremlinQueryLoop()
{
var query = _g.V("thomas").Repeat(Out()).Until(Has("id", "robin")).Path().ToGremlinQuery();
query.ToString().Should().Be("g.V('thomas').repeat(out()).until(has('id', id_1)).path()");
query.Arguments
.Should().HaveCount(1)
.And
.Contain(new KeyValuePair<string, object>("id_1", "robin"));
}
[Fact]
public void TestToGremlinQueryCoalesce()
{
var query = _g.V("thomas")
.Has("id", "123")
.Coalesce<string>(
Has("id", "robin"),
Has("id", "leon"))
.ToGremlinQuery();
query.ToString().Should().Be("g.V('thomas').has('id', id).coalesce(has('id', id_1), has('id', id_2))");
IReadOnlyDictionary<string, object> expectedArguments = new Dictionary<string, object>
{
["id"] = "123",
["id_1"] = "robin",
["id_2"] = "leon"
};
query.Arguments.Should().BeEquivalentTo(expectedArguments);
}
[Fact]
public void TestToGremlinMultipleArguments()
{
var query = _g.V("person")
.Has("name", "Thomas")
.Out("friend")
.Has("name", "Mary")
.Out("parent")
.Has("name", "Steve")
.ToGremlinQuery();
query.ToString().Should().Be("g.V('person').has('name', name).out('friend').has('name', name_2).out('parent').has('name', name_3)");
query.Arguments.Should().BeEquivalentTo(new Dictionary<string, object>
{
["name"] = "Thomas",
["name_2"] = "Mary",
["name_3"] = "Steve"
});
}
}
}