graph-api-test 0.2.1

Test utilities and property-based testing for the graph-api ecosystem
Documentation 
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use crate::{Edge, Vertex, assert_elements_eq, populate_graph};
use graph_api_lib::{EdgeSearch, Graph, VertexSearch};

pub fn test_head<T>(graph: &mut T)
where
    T: Graph<Vertex = Vertex, Edge = Edge>,
{
    let refs = populate_graph(graph);
    let collected = graph
        .walk()
        .vertices_by_id(vec![refs.bryn])
        .edges(EdgeSearch::scan().outgoing())
        .head()
        .collect::<Vec<_>>();
    assert_elements_eq!(graph, collected, vec![refs.graph_api, refs.julia]);
}

pub fn test_tail<T>(graph: &mut T)
where
    T: Graph<Vertex = Vertex, Edge = Edge>,
{
    let refs = populate_graph(graph);
    let collected = graph
        .walk()
        .vertices_by_id(vec![refs.bryn])
        .edges(EdgeSearch::scan().outgoing())
        .tail()
        .collect::<Vec<_>>();
    assert_elements_eq!(graph, collected, vec![refs.bryn]);
}

pub fn test_take<T>(graph: &mut T)
where
    T: Graph<Vertex = Vertex, Edge = Edge>,
{
    let refs = populate_graph(graph);
    let collected = graph
        .walk()
        .vertices(VertexSearch::scan().with_limit(1))
        .collect::<Vec<_>>();
    assert_elements_eq!(graph, collected, vec![refs.bryn]);
}